JP2014234601A - Fall prevention device of ceiling material - Google Patents

Abstract

An object of the present invention is to prevent a ceiling material supported by a suspended material suspended from an upper frame from falling and scattering on a floor due to an earthquake or the like, and to prevent damage to a person below the ceiling material. A surrounding casing located around the upper casing 1 is disposed in a state where it can be in direct or indirect contact with a lower surface of a ceiling member 3 supported by a suspension member 2 suspended from the upper casing 1. 4, a stretchable reinforcing material 6 laid between at least one side surface 5, 5 facing in one direction, and a fixing member 7 for fixing both ends in the lengthwise direction of the reinforcing material 6 to the surrounding housing 4. The apparatus 8 is configured. [Selection] Figure 1

Description

  The present invention prevents the ceiling material supported by the suspension suspended from the upper frame from falling and scattering on the floor due to earthquakes, etc., and the ceiling material falling to prevent damage to the person below the ceiling material The present invention relates to a prevention device.

  In suspended ceilings where suspension materials are suspended from the upper slabs and beams and the ceiling material (ceiling finishing material) is supported at the lower end of the suspension material, the suspension material breaks when the enclosure vibrates during an earthquake, etc. The entire ceiling may fall or the ceiling material may fall off the suspension material. A ceiling guard is connected to the lower edge of the suspension material, and the ceiling material is supported in a suspended state from the frame by being connected to the field edge supported by the field edge receiver. A case where the receiver is detached from the suspension material, a case where the field edge is separated from the field edge receiver, a case where the ceiling material is separated from the field edge, and the like are considered. In addition, it is conceivable that the connection part (seam) of the ceiling material itself is damaged or dropped in units of separated pieces due to breakage or the like.

  If the ceiling material falls, it directly damages the people below the ceiling material, and in the living room or sales (production) in order to clean up the ceiling material that has been dropped and damaged or scattered. It will be in a situation where the activity must be interrupted.

  Conventionally, there is no effective method for preventing the fall of the ceiling material suspended from the frame as described above, and in a lump unit that is peeled when peeling occurs on the concrete surface layer side in a bridge such as a concrete bridge. There are a method of attaching a net for preventing the fall of the concrete to the surface of the concrete (see Patent Document 1) and a method of installing a fall prevention net at a position spaced downward from the ceiling surface (Patent Document 2). reference).

Japanese Patent No. 4942033 (paragraph 0027, FIGS. 1 to 3) Japanese Patent No. 2967920 (Claim 1, paragraphs 0010 and 0012, FIG. 1)

  The method of Patent Document 1 is a method for preventing a fall due to peeling of concrete specific to a structure in which the concrete is exposed to the outside (touching the outside air), and is a method suitable for dropping the ceiling material suspended and supported from the above-described frame. is not.

  In Patent Document 2, a fall prevention net having an area covering the entire surface of the ceiling surface is horizontally installed on the plane, but this fall prevention net is for reducing the influence of external electromagnetic waves on the building (broadcast studio). In relation to also serving as an electromagnetic shield (paragraph 0007), they are arranged at a level intermediate between the ceiling surface and the floor surface at a distance from the ceiling surface (claim 1, paragraph 0009). As a result, when the object falls on the fall prevention net, the impact received by the fall prevention net due to the kinetic energy of the object increases, so that there is a high possibility that the fall prevention net is damaged and the ability to receive the object cannot be exhibited.

  In view of the above background, the present invention proposes a ceiling material fall prevention device that is suitable for a ceiling material that is suspended and supported from a housing, is less susceptible to impact when the ceiling material falls, and is not easily damaged.

  The ceiling material fall prevention device according to the first aspect of the present invention is disposed in a state in which the ceiling material can be directly or indirectly contacted with a lower surface of a ceiling material supported by a suspension material suspended from an upper housing. An expandable / contractible reinforcing material provided between side surfaces facing in at least one direction among the surrounding housings positioned around the housing, and a fixing member for fixing both ends in the length direction of the reinforcing material to the surrounding housing. It is a constituent requirement to have

  “Arranged so that it can be in direct or indirect contact with the lower surface of the ceiling material” means that the reinforcing material is in direct contact with the lower surface of the ceiling material, and a pedestal described later or, for example, covering the reinforcing material In addition to the case where it is indirectly contacted via some wire or face material for protection, the extent to which the ceiling material falls or comes into contact immediately after dropping as shown in FIGS. In addition, it means that the reinforcing material may be arranged directly under the ceiling material. Even if the reinforcing material is not in contact with the ceiling material, the clearance between the reinforcing material and the ceiling material remains so large that it can be directly or indirectly contacted when the ceiling material is dropped. In any case, if the ceiling material is slightly dropped or lowered from the normal state, the reinforcing material is ready to receive the ceiling material immediately. The ceiling material is supported by the suspension material by being connected to a field edge connected to a field edge support supported by the lower end portion of the suspension material.

  The “upper frame” is a slab on the upper floor side in the case of a reinforced concrete structure, and is a structural member such as a beam, a girder, or a truss in the case of a steel structure. “Ambient enclosure” refers to a structural member such as a wall, beam, or girder that surrounds the lower surface of the upper enclosure from the periphery, and includes columns. Regardless of whether the “surrounding frame” on which the reinforcing material is installed is an existing structure or a new structure, it does not matter whether it is a reinforced concrete structure or a steel structure. The “side surfaces of the surrounding housings” refer to surfaces on which the surrounding housings face each other.

  By placing the reinforcing material in a state where it can be in direct or indirect contact with the lower surface of the ceiling material, the ceiling material falls from the suspension material and the ceiling material has kinetic energy when received by the reinforcing material. Therefore, the impact received by the reinforcing material is small, and the possibility that the reinforcing material is damaged is low. Because the possibility of damage to the reinforcement is low, it becomes possible for the reinforcement to reliably receive the ceiling material, causing damage to humans due to the ceiling material falling downward from the reinforcement material, and to the floor surface. Damage and scattering due to falling are prevented. Even when the ceiling material falls together with the field edge, field edge holder, or suspension material, the end of the reinforcement material is fixed to the surrounding casing and the reinforcement material itself can be expanded and contracted. Therefore, it is possible to prevent the ceiling material from falling onto the floor surface.

  Reinforcing materials include lightweight, high-strength fiber materials, and steel materials with excellent fire resistance and heat resistance. Fiber materials are, for example, carbon fiber, aramid fiber, polyester fiber, vinylon fiber, etc. The fiber material is not limited, and includes a continuous fiber reinforcing material in which a reinforcing fiber sheet or the like is impregnated with an epoxy resin or the like. The fiber material is used in the form of a sheet or a mesh in the case of a planar shape, and is used in the form of a strand or a cable in the case of a linear shape. The fiber material is mainly formed in a shape such as a planar shape (band shape) or a linear shape (bar shape), but the form is not limited. Steel materials mainly include high-tensile steel plates and steel wires, but the form is not limited as in the case of fiber materials.

  If the fiber material is classified according to the direction in which the tensile strength can be exhibited, there are uniaxial reinforcing fiber, biaxial reinforcing fiber, and multiaxial reinforcing fiber. Regardless of whether the fiber material is planar or linear, it is constructed in the direction in which the side surfaces of the surrounding casings face each other. Regardless of whether the fiber material is uniaxial reinforcing fiber, biaxial reinforcing fiber or multiaxial reinforcing fiber, the direction of the tensile strength as the reinforcing material is basically between the opposing side surfaces of the surrounding casing. It is installed in the direction of The length direction of the reinforcing material is mainly the direction in which the tensile strength is exhibited. However, in the case of biaxial reinforcing fibers and multiaxial reinforcing fibers, the length direction must always match the tensile strength exhibiting direction. There is no.

  The phrase “the reinforcing member is installed between the side surfaces facing at least one direction” in claim 1 means that the reinforcing member 6 is flat on the lower side of the ceiling member 3 as shown in FIGS. It means that it is constructed only in one direction, and there are cases where it is constructed in two or more directions (plural directions) as shown in FIG. 1- (b), FIG. 2- (c), (d). .

  When the planar shape of the ceiling surface is a rectangle other than a square, it is advantageous that the reinforcing material is installed in the short side direction in order to obtain the effect of reducing the amount of bending in the installed state of the reinforcing material. This is because the amount of bending at the central portion in the length direction of the reinforcing material is smaller as the span in the erection direction (erection section length) is smaller. However, if the amount of flexure is to be reduced, the tension of the reinforcing material needs to be increased, and the pulling force acting on the shaft portion of the fixing material that fixes the end of the reinforcing material to the surrounding housing increases. The applied tension is adjusted according to the installation direction so that the pulling-out force of the fixing material does not become excessive while suppressing the bending amount of the reinforcing material within a certain level.

  The reinforcing material can be expanded and contracted, and can be directly or indirectly in contact with the lower surface of the ceiling material, so that the ceiling material can be supported, held, supported, or held from normal. Even when the ceiling material is dropped, the amount of bending of the reinforcing material is not significantly increased because the tension generated in the reinforcing material can be changed only slightly. When the reinforcing material directly contacts the lower surface of the ceiling material, the reinforcing material may be adhered to the lower surface of the ceiling material.

  The fixing member 7 for fixing the end of the reinforcing member 6 in the length direction to the surrounding casing 4 is, for example, an anchor (anchor bolt), a bolt or the like fixed to the surrounding casing 4 while penetrating the end of the reinforcing member 6. The fixing member 71 is a single member, and the receiving member 72 and the connecting member 9 include the fixing member 71 as shown in FIGS. There is a case. When the fixing member 7 is a single member (fixing material 71) and the surrounding casing 4 is reinforced concrete, the fixing member 7 (fixing material 71) is an anchor (anchor bolt) embedded in the concrete. However, in the case of a steel structure, a bolt or the like that penetrates a steel member (steel material) or is welded to the steel member. When the fixing material 71 is an anchor, the fixing material 71 has a shaft portion 71a embedded in the concrete and a head portion 71b protruding from the surface of the concrete. Also in the case of a bolt (eye bolt), the fixing material 71 includes a shaft portion 71a and a head portion 71b.

  The “fixing member for fixing the reinforcing material to the housing” in claim 1 is a case where the reinforcing material 6 is fixed to the housing 4 by the fixing member 7 as a single member, as shown in FIGS. 3 to 13. This means that the fixing member 7 may be composed of a plurality of members including the fixing material 71 that directly fixes the reinforcing material 6 to the housing 4 (claims 2 to 6). When the fixing member 7 is a single member, or when the fixing member 71 is a main component (Claim 2), the fixing member 7 (fixing member 71) is directly reinforced as shown in FIG. The material 6 is fixed to the surrounding casing 4.

  When the fixing member 7 is composed of a plurality of members including the fixing material 71 (Claims 3 to 6), as shown in FIGS. 4 to 6, the fixing material 71 is reinforced as in the example of FIG. In addition to fixing the material 6 to the surrounding casing 4 (Claims 3 and 4), as shown in FIGS. 7 to 13, there is a connecting material 91 which is a part of the connecting member 9 constituting the fixing member 7. In some cases, the reinforcing member 6 is connected to a connecting member 92 that is a part of the connecting member 9, and the fixing member 71 fixes the connecting member 92 to the surrounding casing 4 (claims 5 and 6).

  When the surrounding casing 4 is reinforced concrete, the surrounding casing 4 may be an existing case or a new case as described above. In the existing case, the fixing member 71 (fixing member 7) is used as a post-installation anchor at the shaft portion 71a. In the new installation, the fixing material 71 is embedded in the shaft portion 71a when the concrete is placed and fixed as it is. In any case, when the axial direction of the shaft portion 71a of the fixing material 71 and the length direction of the reinforcing material 6 are parallel to each other, the fixing material 71 is mainly caused by frictional force and adhesive force generated on the surface of the shaft portion 71a. Although it resists the tension of the reinforcing member 6, if the shaft portion 71 a is uneven, a supporting pressure is added to the resistance force.

  When the fixing member 7 is composed only of the fixing material 71, when the shaft portion 71 a of the fixing material 71 is embedded in the housing 4 (concrete), for example, the head 71 b of the fixing material 71 has the planar reinforcing material 6. When the reinforcing material 6 is fixed to the housing 4 by being brought into close contact with the surface of the housing 4 and restrained, the tension applied to the reinforcing material 6 by the head 71b is dispersed when the reinforcing material 6 is fixed by the fixing material 71. Therefore, an area capable of dispersing the tension of the reinforcing material 6 is given to the head 71 a of the fixing material 71. When the reinforcing member 6 is linear, the end of the reinforcing member 6 can be connected to the head portion 71b of the fixing member 71. Therefore, the head portion 71b does not need to have an area enough to disperse the tension. .

  When the fixing member 7 is composed only of the fixing material 71 and the reinforcing material 6 is planar, the shaft portion 71a of the fixing material 71 passes through the end portion of the reinforcing material 6 and the shaft portion 71a side of the head portion 71b. This makes the reinforcing member 6 adhere to the surface of the housing 4. In this case, since the shaft portion 71a penetrates the reinforcing member 6, the portion around the penetrating portion is easily broken due to the concentration of tension, so that the portion around the penetrating portion is reinforced to avoid breakage, An area capable of dispersing the tension is given to the head 71 b of the fixing material 71.

  As shown in FIG. 3, a receiving material 72 such as a plate that disperses the tension of the reinforcing material 6 is attached to the fixing material 71, and the receiving material 72 is disposed on the shaft portion 71 a side of the head 71 b of the fixing material 71. In this case, since the receiving material 72 functions to disperse and bear the tension of the reinforcing material 6 and prevent the reinforcing material 6 from being broken, it is not always necessary to give the above-mentioned area to the head 71b of the fixing material 71. Absent. In this case, the fixing member 7 is fixed to the surrounding casing 4 through the receiving member 72 that holds the end of the reinforcing member 6, and presses the receiving member 72 toward the surrounding casing 4. The fixing member 71 is used to attach the member 72 to the surrounding casing 4 (claim 2). In FIG. 3, the shaft portion 71 a of the fixing material 71 passes through the reinforcing material 6, but the shaft portion 71 a may not pass through the reinforcing material 6.

  When the receiving material 72 is attached to the fixing material 71, as shown in FIGS. 3A and 3B, when the length direction of the reinforcing material 6 (construction direction) and the axial direction of the fixing material 71 are parallel to each other. The reinforcing material 6 is divided into a section parallel to the ceiling material 3 and a section perpendicular to the ceiling material 3 and overlapping the receiving material 72, so that the corner between the section parallel to the ceiling material 3 and the section perpendicular to the corner Part is formed. Since the corner portion is likely to break due to the concentration of stress due to the tension always borne by the receiving member 72, the direction of the reinforcing member 6 is changed so that the corner portion is not formed in the reinforcing member 6 in order to improve safety against breakage. The contact surface of the receiving material 72 at the boundary with the reinforcing material 6 is formed in a curved shape. FIGS. 3C and 3D show a state in which the receiving material 72 itself is formed (processed) into a shape having a curved surface from a thin plate.

  As shown in FIGS. 4 and 5, the fixing member 7 includes a connecting member 9 to which ends of the reinforcing members 6 are connected, and a fixing material 71 fixed to the surrounding casing 4 while being connected to the connecting member 9. In some cases (Claim 3). When the reinforcing member 6 is linear, the end of the reinforcing member 6 can be directly connected to the fixing member 71 in a state of being connected to the fixing member 71 except when the end portion of the reinforcing member 6 can be directly connected to the head 71b of the fixing member 71. As shown in FIGS. 4- (a) and (b), an insertion hole (linkage) suitable for connection (linkage) with the fixing material 71 is provided at the end of the reinforcing member 6 so that tension can be transmitted between them. A fixing part 72 having a part 62a) is formed or connected.

  FIG. 4 shows a state where the fixing portion 62 having the insertion hole is connected to the end portion of the reinforcing material 6 when the reinforcing material 6 is linear, but the fixing portion 62 having the insertion hole is connected to the reinforcing material 6. It can be formed or connected even when is in the form of a plane (band). For example, it is possible to divide the end portion of the planar reinforcing material 6 into a plurality of bundles in the width direction, and to form or connect the fixing unit 62 for each of the divided bundles.

  When the fixing portion 62 having an insertion hole is formed at the end of the reinforcing member 6, one end of the connecting member 9 is inserted into the insertion hole of the fixing portion 62 as shown in FIG. The end is connected to the shaft portion 71a or the head portion 71b of the fixing material 71 by screwing or the like. FIG. 4 shows an example in which the connecting member 9 is a bolt (eye bolt) having a ring inserted through the insertion hole of the fixing portion 62. The connecting member 9 (eye bolt) shown in FIG. 4 is connected to the shaft portion 71a and the head portion 71b of the fixing material 71 by a nut or the like at the shaft portion 9b. The eyebolts in FIG. 4 correspond to the connecting member 91 in the example of FIG. 5 (Claim 4). When the shaft portion 9b of the eyebolt is connected to the shaft portion 71a of the fixing material 71, the head portion 71b may also serve as a nut.

  In the example shown in FIG. 4, when the reinforcing material 6 is linear or strip-like, the axial direction of the reinforcing material 6 and the axial direction of the shaft portion 71 a of the fixing material 71 coincide, and the reinforcing material 6 and the fixing portion 62, and Since the shaft portion 71a of the fixing material 71 is positioned on the same straight line, there is no stress concentration at the end of the reinforcing material 6, and no bending moment or shear force is generated at any part of the connecting member 9. There are advantages. In this case, the tension of the reinforcing member 6 is borne on the surrounding casing 4 mainly by the adhesion force and the frictional force with the concrete generated in the shaft portion 71a of the fixing member 71. Depending on the shape of the shaft portion 71a, a supporting pressure is applied to the adhesive force generated in the shaft portion 71a.

  As shown in FIGS. 5 and 6, the connecting member 9 may include a connecting member 91 to which the end of the reinforcing member 6 is directly connected, and a connecting member 92 that is connected to both the connecting member 91 and the fixing member 71. (Claim 4). FIG. 5 shows an example in which the connecting member 9 is made of metal such as the eyebolt in FIG. 4 as the connecting material 91 and the steel material (section steel) as the connecting material 92. The type (form) of the steel material as the connecting material 92 is not limited. FIG. 6 shows an example in which the connecting member 9 is made of a covering material as the connecting material 91 that covers a part of the reinforcing material 6 and a steel material (section steel) as the connecting material 92.

  In the example of FIGS. 4 and 5, one end of the reinforcing member 6 is connected to the connecting member 9 or the connecting member 91 (eyebolt), so that one linear reinforcing member 6 faces in a single state. In the example shown in FIG. 6, the grooved steel flange as the connecting member 92 is connected in a state where the flange is opposed to the horizontal direction perpendicular to the length direction of the reinforcing member 6. By inserting a covering material as the material 91 into both flanges, one reinforcing material 6 is installed in a state of being parallel in the horizontal direction. In the example of FIG. 6, when one reinforcing material 6 is arranged in parallel in the horizontal direction, the receiving of the ceiling material 3 is equivalent to the case of a planar shape (band shape) having a width corresponding to the width of the reinforcing material 6 arranged in parallel. Therefore, the ceiling material 3 can be received while the amount of the reinforcing material 6 used is small, and the usage efficiency of the reinforcing material 6 is improved.

  In the case of the reinforced concrete structure, the surrounding casing 4 to which the end portion (fixing portion 62) of the reinforcing material 6 is fixed is a wall, a beam, a column, or the like as described above. For example, it is orthogonal to the installation direction of the reinforcing material 6 When there is no continuous wall between the horizontally adjacent columns 41, 41 and the end of the reinforcing member 6 cannot be directly fixed to the surrounding casing 4, as shown in FIGS. The connecting member 92 connected to the end of the reinforcing member 6 is in close contact with the column 41 in a section overlapping the column 41 as the surrounding case 4, whereby the reinforcing member 6 is indirectly fixed to the surrounding case 4. (Claim 5). In this case, the connecting material 92 has a length extending at least between the adjacent columns 41, 41, and the fixing material 71 is arranged in a section of the connecting material 92 that overlaps the columns 41, and penetrates the connecting material 92 to the columns 41. The binder 92 is joined to the column 41 by being fixed.

  In this case, as shown in FIGS. 7 to 13, the reinforcing member 6 is basically connected (connected) to a section of the connecting member 92 other than the section overlapping the column 41, and the connecting member 92 is connected to the column 41 as described above. Are joined to the pillars 41 by the fixing material 71 in the sections overlapping with each other. Since there is no column 41 on the back side (surrounding housing 4 side) of the section of the connecting material 92 to which the reinforcing material 6 is connected, and there is no housing 4 to be fixed, the end of the reinforcing material 6 (the fixing portion 62). ) Is not connected, and a connecting member 91 such as a bolt (eye bolt) for connecting the reinforcing member 6 to the connecting member 92 is connected (connected) to the end of the reinforcing member 6.

  The connecting material 92 may be joined to the surface of the column 41 on the side where the reinforcing material 6 is installed, or may be joined to the surface intersecting with the surface (Claim 6). The “surface on the side on which the reinforcing material 6 is constructed” is the “opposing side surface 5” referred to in claim 1, but in this item, the column 41 as the surrounding casing 4 particularly opposes the construction direction of the reinforcing material 6. The opposing surface 51 is referred to as a surface. A surface that intersects the facing surface 51 of the column 41 is hereinafter referred to as an intersecting surface 52.

  When the joining material 92 is joined to the facing surface 51 of the column 41, the joining material 92 is joined by the fixing material 71 on the surface overlapping the facing surface 51 as shown in FIGS. When the joining material 92 is joined to the intersecting surface 52 of the column 41, a joining plate 92 b that forms a surface parallel to the intersecting surface 52 and overlaps the intersecting surface 52 as shown in FIGS. It protrudes on the column 41 side which is the back side, and this joining plate 92 b is joined to the column 41 by the fixing material 71. The joining plates 92b and 92b are provided on the back side of the connecting material 92 in parallel so as to sandwich the column 41 in a direction orthogonal to the length direction of the reinforcing material 6.

  As shown in FIGS. 7 and 8, when the connecting material 92 is joined to the opposing surface 51 of the column 41, the shaft portion 71a of the fixing material 71 is parallel to the length direction of the reinforcing material 6. Although it resists the tension of the reinforcing member 6 due to the adhesive force and frictional force generated in the shaft portion 71a, as shown in FIGS. 11 to 13, when the joint plate 92b is joined to the intersecting surface 52, the shaft portion 71a The tensile force of the reinforcing material 6 is resisted by the shearing force.

  When the fixing material 71 resists the tension of the reinforcing member 6 by a resistance force such as an adhesive force generated on the shaft portion 71a, the direction of the pulling force generated on the shaft portion 71a by the tension matches the direction of the shaft portion 71a. If the pull-out force exceeds the resistance force, it is assumed that the shaft portion 71a is likely to come out of the frame (concrete) 4. On the other hand, in the case where the fixing material 71 resists by the shearing force of the shaft portion 71a, if the adhesion force on the shaft portion 71a is reduced and the pulling-out force exceeds the resistance force, the shaft portion 71a can be pulled out. Therefore, there is an advantage of high safety against slipping out. In the sixth aspect of the present invention (FIGS. 11 to 13), the connecting member 92 is joined to the column 41 at the joining plate 92b projecting from the back side thereof, so that the fixing member 71 exposed in the case of FIG. Since it is not exposed to the surface side of the connecting material 92, there is also an advantage that the appearance of the connecting material 92 in the joined state to the column 41 is improved.

  Even if the reinforcing material 6 is placed in a state where it is in tension and in contact with the lower surface of the ceiling material 3, if the reinforcing material 6 is installed horizontally or nearly horizontally, Since the tension of the reinforcing material 6 is unlikely to press the ceiling material 3 against the upper housing 1 in the normal state, the ceiling material 3 is detached from the suspension material 2 or the suspension material 2 is detached from the upper housing 1. Then, the reinforcing material 6 that has received the ceiling material 3 or the like hangs down and may be dropped during further vibration. In such a case, when the ceiling material 3 from which the reinforcing material 6 is detached is received, in order to prevent the reinforcing material 6 from hanging down, as shown in FIGS. In the meantime, there may be interposed a pedestal 10 that contacts both the ceiling material 3 and the reinforcing material 6 and applies the tension of the reinforcing material 6 to the ceiling material 3 (Claim 7).

  In this case, since the pedestal 10 is interposed between the ceiling material 3 and the reinforcing material 6, the reinforcing material 6 is laid in a downward convex curve shape or a polygonal shape, and therefore the tension of the reinforcing material 6 is applied to the ceiling. It acts on the material 3 in the vertical direction upward, and it becomes possible to keep the ceiling material 3 pushed up. As a result, since the ceiling material 4 is in a state in which the ceiling material 4 is prevented from falling from the normal time, the safety against the falling of the ceiling material 3 itself is improved even when the ceiling material 3 is detached from the suspension material 2.

  Even if the ceiling material 3 falls from the suspension material 2, since the ceiling material 3 is in close contact with the reinforcing material 6, the impact due to the drop does not act on the reinforcing material 6. The reinforcing material 6 that has received the material 3 or the like hangs down, and the possibility of dropping during further vibration is reduced. According to the seventh aspect, since the pedestal 10 is interposed between the lower surface of the ceiling material 3 and the reinforcing material 6, there is substantially no clearance between the reinforcing material 6 and the lower surface of the ceiling material 3.

  The pedestal 10 receives an upward force from the reinforcing material 6, and is sandwiched between the ceiling material 3 and the reinforcing material 6, receives a compressive force from both, and is sandwiched between the ceiling material 3 and the reinforcing material 6. In order to stabilize, it is not ask | required whether the reinforcing material 6 is planar or linear when using the base 10. FIG.

  The reinforcing member 6 is installed between the surrounding surrounding casings 4 and 4 in a tensioned state, but the distance between the installation sections, that is, the distance between the opposing side surfaces 5 and 5 of the surrounding casings 4 and 4 is large. If it becomes, it will become easy to produce the bending amount of the center part of a length direction, and the compressive force which acts on the base 10 arrange | positioned in the area with a large bending amount will become small. Therefore, by making the height of each pedestal 10 different according to the position in the length direction of the reinforcing material 6 in advance so that the construction curve of the reinforcing material 6 becomes a suspension curve as shown in FIG. It is possible to keep the compressive force acting on all the pedestals 10 within a certain range without causing the reinforcing member 6 to bend.

  As a result, the forces received by the respective parts of the ceiling material 3 upward from the reinforcing material 6 are equalized, so that the safety against dropping of the respective parts of the ceiling material 3 is equalized regardless of the position in the length direction of the reinforcing material 6. Therefore, the possibility of dropping any part of the ceiling material 3 is not higher than the possibility of other parts. Further, since the compressive force acting on all the pedestals 10 becomes substantially uniform, the tension of the reinforcing material 6 generated between the adjacent pedestals 10 and 10 becomes almost uniform, and the tension in a part of the reinforcing material 6 is reduced. It will not be excessive.

  By placing the reinforcing material in a state where it can directly or indirectly contact the lower surface of the ceiling material, the impact received by the reinforcing material when the ceiling material falls from the suspension material and is received by the reinforcing material is reduced. Therefore, the possibility that the reinforcing material is damaged is reduced, and the dropped ceiling material can be reliably received. As a result, it is possible to prevent damage to people due to the ceiling material falling from the reinforcing material, and damage and scattering due to the fall on the floor surface.

In addition, because the end of the reinforcing material is fixed to the surrounding casing and the reinforcing material itself can be expanded and contracted, it is reinforced even when the ceiling material falls together with the field edge, field edge receiver, or suspension material. Since the material can be completed only by extending from the normal time, the certainty of preventing the ceiling material from falling onto the floor surface is high.

(A) is an elevation view showing a state in which a reinforcing material is disposed on the lower surface of a ceiling material supported by a suspension member suspended from an upper housing, and the reinforcing material is installed between surrounding housings facing each other, (b) ) Is a top view of (a) when the reinforcing material is installed in two horizontal directions. (A) is a plan view showing a state in which a reinforcing material is installed in the short side direction of the ceiling surface without forming a gap between the reinforcing materials adjacent in the width direction, and (b) is adjacent in the width direction. The top view which showed a mode that the clearance gap was formed between the reinforcement materials to perform, and the reinforcement material was constructed in the short side direction of the ceiling surface, (c) formed the clearance gap between the reinforcement materials adjacent in the width direction, and The top view which showed a mode that reinforcement material was constructed in two directions of a short side direction and a long side direction, (d) is a plane which showed a mode that reinforcement material was constructed without gap in two directions of a short side direction and a long side direction FIG. (A) is a longitudinal sectional view showing a state in which the end of the planar reinforcing material is held by a receiving material constituting the fixing member and fixed to the surrounding casing by the fixing material, and (b) is (a) (C) is a longitudinal sectional view showing a state in which the stopper is formed at the end of the reinforcing material in (b), (c) is a longitudinal sectional view showing a state in which the upper part of the receiving material in (b) is formed in a curved shape, (d). FIG. 4 is a longitudinal sectional view showing a state in which the upper part of the receiving material in (c) is formed long in the horizontal direction. (A) is a longitudinal section showing a state in which the end of the linear reinforcing material is connected to the fixing material in a state where the end of the linear reinforcing material is connected to the eyebolt as the connecting member when the fixing member is composed of the connecting member and the fixing material. FIG. 4B is a top view of FIG. (A) When the fixing member is made of a connecting member and a fixing material, the connecting material and the connecting material, and the connecting material and the fixing material are connected when the connecting member is made of an eyebolt as the connecting material and a shape steel as the connecting material. The longitudinal cross-sectional view which showed the mode of (b) is a look-up figure of (a). (A) shows the state of connection between the connecting material and the connecting material, and the connecting material and the fixing material when the connecting member is made of the covering material as the connecting material for covering the reinforcing material and the steel material (shaped steel) as the connecting material. The longitudinal cross-sectional view shown, (b) is a look-up view of (a). (A) is a perspective view showing the relationship between the connecting material and the column when the connecting material of the channel steel straddles between the adjacent columns and is in close contact with the opposite surface of the column, and (b) is (a). FIG. 6C is a cross-sectional view taken along line yy of FIG. (A) is a perspective view showing the relationship between the connecting material and the column when the connecting material of the angle iron straddles between the adjacent columns and is in close contact with the opposite surface of the column, and (b) is a diagram of (a). An arrow view of the xx line, (c) is a sectional view of the y-y line of (b). (A) is an arrow view seen in the axial direction of the reinforcing material showing the relationship between the connecting material and the column when one of the flanges of the channel steel in FIG. b) is a sectional view taken along line yy of FIG. (A) is an arrow view seen in the axial direction of the reinforcing material showing the relationship between the connecting material and the column when the channel steel in FIG. 7 is replaced with a T-shaped steel, and (b) is the y in (a). It is sectional drawing of a -y line. (A) is a perspective view showing the relationship between the connecting material and the column when the connecting material of the channel steel straddles between the adjacent columns and is joined in close contact with the crossing surface of the column in the joining plate, (b) FIG. 4 is a sectional view taken along line xx in FIG. (A) shows the crossing of the columns in the joint plate in the state where the connecting material shown in FIG. 11 changes its direction and one flange is in close contact with the opposite surface of the column when the channel steel connecting material straddles between adjacent columns. The perspective view which showed the relationship between a binder and a pillar at the time of closely_contact | adhering to a surface, (b) is sectional drawing of the xx line of (a), (c) is the binder in (a). It is sectional drawing of the xx line | wire of (a) in the case of being angle steel. (A) is a perspective view showing the relationship between the connecting material and the column when the connecting material of the T-shaped steel straddles between the adjacent columns and is joined in close contact with the crossing surface of the columns in the joining plate, (b). FIG. 4 is a sectional view taken along line xx in FIG. (A) is an elevation view showing the relationship between the ceiling material, the reinforcing material and the pedestal when a pedestal is interposed between the lower surface of the ceiling material and the upper surface of the reinforcing material, and (b) is a look up of (a). FIG. (A) is an elevation view showing the relationship between the ceiling material, the reinforcing material, and the pedestal when the reinforcing material is installed in the form of a suspended line, and the pedestal is interposed between the ceiling material and the reinforcing material, b) is a top view of (a). (A) is a side view showing an example of forming a pedestal in the simplest form, (b) is a bottom view of (a), and (c) is a pedestal having a shape in which the pedestal shown in (a) is connected in one direction. The side view shown, (d) is a bottom view of (c). (A) is a side view showing a formation example of a pedestal formed in the shape of a truncated pyramid as a shape that enhances stability against falling, (b) is a bottom view of (a), and (c) is a pedestal shown in (a). The side view which showed the example of formation of the base formed in the truncated cone shape as a modification, (d) is a bottom view of (c). (A) is the bottom view which showed the example of formation of the base formed in the form reduced in weight, (b) is sectional drawing of the xx line | wire of (a).

  FIG. 1 shows a surrounding casing (hereinafter referred to as a surrounding casing) 4 disposed on the lower surface of a ceiling material 3 supported by a suspension member 2 suspended from an upper casing (hereinafter referred to as an upper casing) 1 and located around the upper casing 1. Among them, a ceiling member provided with a reinforcing member 6 laid between at least side surfaces 5 and 5 facing each other in one direction, and a fixing member 7 for fixing both ends of the reinforcing member 6 in the length direction to the surrounding casing 4 is prevented. An outline of the device 8 is shown. Although not shown, a field edge receiver is basically supported at the lower end of the suspension member 2, the field edge is connected to the field edge receiver, and the ceiling material 3 is supported by the field edge.

  The reinforcing material 6 can be expanded and contracted, and is mainly planar (strip-shaped) or linear (bar-shaped), and faces the lower surface of the ceiling material 3 in a state where it can be in direct contact or indirect contact (contact). It is installed (stretched) between the side surfaces 5 and 5. The indirect contact of the reinforcing material 6 with the ceiling material 3 means that a pedestal 10 or the like is interposed between the ceiling material 3 and the reinforcing material 6 as shown in FIGS. 14 and 15. The state in which the reinforcing material 6 can come into contact with the lower surface of the ceiling material 3 is such that the reinforcing material 6 comes into contact with the reinforcing material 6 immediately after the ceiling material 3 drops, as shown in FIGS. “Indirectly” means that there is some member that covers the reinforcing material 6 between the lower surface of the ceiling material 3 and the reinforcing material 6. Say to do.

  FIG. 1- (b) shows a state where the ceiling surface of FIG. 1- (a) is looked up. The right side of FIG. 1- (b) shows a state in which the reinforcing material 6 is installed only in the long side direction of the ceiling surface, and the left side shows a state in which the reinforcing material 6 is installed in two directions of the short side direction and the long side direction. The fixing member 7 for fixing the end portion of the reinforcing member 6 to the surrounding casing 4 may be used to fix the reinforcing member 6 to the surrounding casing 4 while being directly or indirectly connected to the reinforcing member 6. Is not questioned. The fixing member 7 is connected to the fixing material 71 while holding the reinforcing material 6 and the fixing material 71 directly fixed to the surrounding housing 4 as shown in FIG. In some cases, the receiving member 72 is used, and in other words, the connecting member 9 is connected (connected) to both the fixing member 71 and the reinforcing member 6 as shown in FIG.

  Although the surrounding casing 4 may be mainly a steel frame structure or a reinforced concrete structure, the form of the fixing member 7 is determined according to the structural type of the surrounding casing 4. When the surrounding frame 4 is a steel frame, bolts that are joined to the surrounding frame 4 by screwing or welding are mainly used as the fixing member 7 or the fixing material 71. When the surrounding frame 4 is a reinforced concrete structure, it is mainly embedded in concrete. Anchors (anchor bolts) are used. In the case of a reinforced concrete structure, the form of the anchor as the fixing member 7 or the fixing material 71 is determined depending on whether the surrounding frame 4 is existing or newly provided, and in the existing case, a drilling hole drilled in the concrete A shaft portion 71a of an anchor (fixing material 71) is inserted therein, and before or after insertion, a filling material such as mortar, concrete, adhesive or the like is filled in the drilling hole. When the surrounding frame 4 is a newly-constructed concrete structure, an anchor (fixing material 71) is arranged at the time of placing the concrete, and the shaft portion 71a is embedded in the concrete as it is.

  2- (a)-(d) shows the example of the arrangement | positioning procedure of the planar (strip | belt-shaped) reinforcement material 6 under the ceiling surface which has a square-shaped plane. (A), (b) is a case where the belt-shaped reinforcing material 6 is installed in the short side direction below the ceiling surface, (a) without forming a gap between the reinforcing materials 6, 6 adjacent in the width direction, For example, when the adjacent reinforcing members 6 and 6 are arranged while overlapping each other in the width direction, (b) is a case where a gap is formed between the adjacent reinforcing members 6 and 6. (C) forms a gap between the adjacent reinforcing members 6 and 6 and arranges the reinforcing members 6 and 6 in the short side direction and the long side direction at the intersecting portions while arranging the reinforcing members 6 and 6 in the short side direction and the long side direction. When overlapping each other, (d) is arranged so as to overlap each other in the short side direction and the long side direction without forming a gap between the adjacent reinforcing members 6 and 6, while overlapping each other in the short side direction. And the reinforcing members 6 and 6 in the long side direction are overlapped with each other. In the example of (c), the reinforcing members 6 and 6 in the short side direction and the long side direction may be alternately overlapped in a mesh pattern.

  FIG. 3 shows the fixing member 7 in the case where the fixing member 7 includes a fixing material 71 and a receiving material 72 that holds the end portion of the sheet-like reinforcing material 6 while closely attaching the reinforcing material 6 to the side surface of the surrounding casing 4. A configuration example is shown. The fixing material 71 includes a shaft portion 71 a embedded in the surrounding housing 4, and a head portion 71 b that is connected to the shaft portion 71 a so as to be separated from the shaft portion 71, and is exposed to the surface of the surrounding housing 4. When the portion 71 a penetrates the receiving material 72 and is fixed to the surrounding housing 4, the head 71 b presses the receiving material 72 toward the surrounding housing 4, and tries to adhere to the side surface 5 of the surrounding housing 4. The receiving material 72 is pressed to the side surface 5 side of the surrounding casing 4, thereby keeping the reinforcing material 6 in close contact with the side surface 5 of the surrounding casing 4 while maintaining the tension applied to the reinforcing material 6. If the head 71b is a nut that is screwed into the shaft 71a, the force applied to the receiving member 72 toward the peripheral housing 4 is adjusted as the head 71b rotates.

  FIG. 3A shows an example in which the receiving member 72 is formed in a plate shape that contacts the end of the reinforcing member 6 on the surface. In this example, the shaft portion 71a of the fixing material 71 passes through the receiving material 72 and is fixed in the surrounding casing 4, and the head 71b is in close contact with the surface of the receiving material 72 and exerts pressure on the surrounding casing 4 side. The reinforcing material 6 is sandwiched and restrained between the side surface 5 which is the surface of the surrounding casing 4 and the back surface of the receiving material 72. The shaft portion 71 a of the fixing material 71 may or may not penetrate the reinforcing material 6. Since the portion of the reinforcing member 6 that overlaps the receiving member 72 and the portion that is located on the lower surface side of the ceiling member 3 (contacts the lower surface of the ceiling member 3) are at right angles to each other. Since the portion is easy to concentrate the tension applied to the reinforcing material 6 and easily breaks, in FIG. 3A, the upper end of the receiving material 72 is connected to the ceiling material 4 from the peripheral housing 4 side for the purpose of avoiding the breaking of the reinforcing material 6. A convex curved surface or a polygonal shape is formed on the side 3.

  In FIG. 3B, a retaining member 61 is formed by embedding a core material having a cross-sectional area larger than that of the reinforcing material 6 in a portion of the end of the reinforcing material 6 in FIG. An example is shown in which the retaining member 61 is locked to the receiving member 72 upward to make it difficult for the reinforcing member 6 to come out of the receiving member 72. (C) is a case where the upper end portion itself of the receiving material 72 in (a) is formed into a curved shape, the curvature of the curved surface of the upper end portion of the receiving material 72 in (a) is reduced, and the breakage of the reinforcing material 6 is less likely to occur. An example is shown. (D) extends the upper end portion of the receiving material 72 in (c) to the side surface 5 side of the opposing surrounding casing 4, and the receiving material serves to maintain the state where the reinforcing material 6 is in close contact with the lower surface of the ceiling material 3. 72 shows an example in which the upper end of 72 is held. In the case of (d), the upper surface of the upper end portion of the receiving material 72 is always provided by giving the upper end portion a shape such that the upper end portion is elastically deformed when the reinforcing material 6 is in close contact with the ceiling material 3. Since the reinforcing material 6 is to be brought into close contact with the lower surface of the ceiling material 3, the upper end portion of the receiving material 72 functions to push the reinforcing material 6 upward.

  FIG. 4 shows an example in which the fixing member 7 includes a connecting member 9 to which the end of the reinforcing member 6 is connected, and a fixing material 71 fixed to the surrounding casing 4 while being connected to the connecting member 9. Here, an example in which the reinforcing member 6 is linear is shown. However, in the case where the reinforcing member 6 is linear, an end portion of the reinforcing member 6 is formed with a fixing portion 62 to be connected to the connecting member 9 or integrally. Connected. For example, when the connecting member 9 is an eyebolt having a ring 9a as shown in the figure, the fixing unit 62 has a connecting part 62a that is inserted and closed by the ring 9a, and the reinforcing part 62a is connected to the ring 9a. 6 is formed or connected to the end. The connecting portion 62a has an insertion hole through which the ring 9a is inserted. When the ring 9a is a hook type, the connecting portion 62a can be connected to the ring 9a even after being formed in a closed state. 4A shows a state in which the connecting member 9 (eye bolt) is viewed in the horizontal direction, and FIG. 4B shows a cross section through the ring 9a when the connecting member 9 is viewed from the bottom surface side.

  FIG. 4 shows an example in which the connecting member 9 is a single eyebolt. However, the connecting member 9 has a shape suitable for each form on the reinforcing material 6 side and the fixing material 71 side. Any form is acceptable. In the case of an eyebolt, the connecting member 9 is connected to the shaft portion 71a of the fixing material 71 at the shaft portion 9b by screwing or the like, and is fastened by a nut that is the head portion 71b of the fixing material 71. Alternatively, the shaft 9b of the connecting member 9 is abutted against the shaft 71a of the fixing material 71, and the nut of the head 71b is screwed over the shafts 71a and 9b so that the connecting member 9 is fixed to the fixing material 71. Connected (linked).

  FIG. 5 shows an example in which the connecting member 9 in FIG. 4 is composed of a connecting member 91 to which ends of the reinforcing member 6 are directly connected, and a connecting member 92 connected to both the connecting member 91 and the fixing member 71. ing. FIG. 5 shows an example in which the connecting material 91 is an eyebolt. In this example as well, the connecting material 91 has portions of shapes suitable for the respective forms on the reinforcing material 6 side and the fixing material 71 side. If it does, a form will not be ask | required. The example of FIG. 5 corresponds to a form in which the connecting member 9 (eye bolt) in the example of FIG. 4 is replaced with the connecting member 91 and the connecting member 92 is interposed between the connecting member 9 and the fixing member 71. 5A shows a state where the connecting member 9 (the connecting material 92) is viewed in the horizontal direction, and FIG. 5B shows a cross section passing through the ring 9a when the connecting material 92 is viewed from the bottom surface side.

  FIG. 5 shows an example in which the connecting material 92 is a shape steel such as channel steel. However, the connecting material 92 has a shape suitable for each form on the connecting material 91 (eye bolt) side and the fixing material 71 side. If it has a site | part, regardless of a form, as shown in FIG. 8 etc., as a connection material 92, angle steel and other steel materials are also used. In the example of FIG. 5, the shaft portion 9 b of the connecting member 91 is inserted into one flange of the connecting member 92 and connected (connected) with an attached nut, and the shaft portion 71 a of the fixing member 71 is inserted into the other flange. Are connected (linked) by a head 71b.

  FIG. 6 shows an example in which the connecting member 9 includes a connecting member 91 to which the ends of the reinforcing member 6 are connected and a connecting member 92 connected to both the connecting member 91 and the fixing member 71. An example in the case of a covering material (cladding tube) covering a part of the section of the reinforcing member 6 is shown. In this example, the shaft portion 71 a of the fixing material 71 passes through the web of the connecting material 92 and is fixed to the surrounding casing 4. The reinforcing material 6 passes through the opposing flange of the grooved steel as the connecting material 92 in the section of the covering material as the connecting material 91, so that the horizontal direction orthogonal to the length direction of the reinforcing material 6 is shown in FIG. It is erected in parallel with the direction. 6A shows a cross-section passing through the web when the connecting material 92 is viewed in the horizontal direction, and FIG. 6B shows a state where the connecting material 92 is viewed from the bottom surface side.

  In FIG. 6, the opposing flanges of the channel steel as the connecting material 92 are juxtaposed in the horizontal direction perpendicular to the length direction of the reinforcing material 6, and the reinforcing material 6 (connecting material 91) is inserted through both flanges to The two reinforcing members 6 are juxtaposed in the horizontal direction and can be installed in two states. The ceiling material 3 equivalent to the strip-shaped reinforcing material 6 having a width equivalent to the width of the parallel reinforcing material 6 is constructed by laying the reinforcing material 6 in a state parallel to the horizontal direction perpendicular to the installation direction. It is possible to have a holding ability.

  In FIG. 6, the reinforcing material 6 penetrates the flange of the connecting material 92 (grooved steel) in the section of the connecting material 91 (coating material), so that the tension applied to the reinforcing material 6 is applied to the connecting material 91. It acts in a direction perpendicular to the axial direction and acts as a shearing force to break the reinforcing material 6. For this reason, the connecting material 91 (covering material) protects the reinforcing material 6 against breakage due to the shearing force acting on the portion of the connecting material 92 (grooved steel) penetrating the flange in accordance with the tension applied to the reinforcing material 6. It also has a role to play.

  7 to 13, the connecting member 92 constituting the connecting member 9 has a length extending between adjacent columns 41 and 41 as the surrounding casing 4, and the fixing member 71 is arranged in a section where the connecting member 92 overlaps the column 41 of the connecting member 92. Then, an example in which the connecting material 92 is in close contact with and joined to the pillar 41 in the section overlapping the pillar 41 is shown. The connecting material 92 may straddle three or more pillars 41. There is a case where the connecting material 92 has a single length extending between the plurality of columns 41 and a case where the connecting material 92 does not have a length extending between the adjacent columns 41, 41. In the latter case, the connecting material 92 is the column 41. Are connected to each other in a section that overlaps with each other or in an intermediate section between the columns 41 and 41.

  As shown in FIGS. 7 to 10, the joining material 92 is joined to the facing surface 51 of the column 41 on the side (side surface 5) on which the reinforcing material 6 is laid, and FIGS. 11 to 13. As described above, there is a case where the crossing surface 52 that is a crossing surface such as a surface orthogonal to the facing surface 51 is joined. Although the opposing surface 51 of the column 41 is the side surface 5 of the surrounding casing 4, the column 41 is not continuous in the horizontal direction orthogonal to the installation direction of the reinforcing member 6, so in the examples of FIGS. 5 is particularly referred to as a facing surface 51. The end portion (fixing portion 62) of the reinforcing member 6 is connected to the connecting member 92 via a connecting member 91.

  When the surrounding housing 4 does not have a horizontal continuous surface (side surface 5) orthogonal to the installation direction of the reinforcing material 6 at the fixing position (fixing level) at the end of the reinforcing material 6, for example, at the fixing position of the reinforcing material 6. In the case where there are no walls and beams, and there are only columns 41 and 41 arranged at intervals, the end of the reinforcing member 6 is fixed to the column 41 as the surrounding casing 4. In such a case, the connecting material 92 constituting the connecting member 9 is connected to the pillar 41 in a direction (horizontal direction) adjacent to the pillars 41 and 41 so that the connecting member 9 is connected to the connecting material 92. The reinforcing material 6 is indirectly fixed to the surrounding casing 4. The connecting member 92 is installed between the adjacent columns 41 and 41 and serves as a beam that also serves as the surrounding casing 4.

  Since the joining material 92 is joined to the pillar 41 by the fixing material 71 penetrating a part of the joining material 92 in the section overlapping with the pillar 41, the reinforcing material 6 is basically joined as shown in FIG. The connecting member 91 constituting the connecting member 9 is connected to a section other than the section overlapping the column 41 of the material 92. However, when the connecting material 91 is connected (connected) to the fixing material 71 as in the example shown in FIG. 4 or when the connecting material 91 and the fixing material 71 are different from each other in the connecting material 92 (as shown in the example shown in FIG. In the case where the reinforcing material 6 is connected to the position), the reinforcing material 6 may be connected to a section overlapping the column 41 of the connecting material 92.

  FIG. 7 shows a state in which the rear surface (outer peripheral surface) of the web is in close contact with the opposing surface 51 of the column 41 in a state where the flange of the grooved steel as the connecting material 92 is opposed in the vertical direction. An example in which the web is bonded to the facing surface 51 using the fixing material 71 penetrating the web and the linear reinforcing material 6 is connected to the section other than the section in close contact with the facing surface 51 using the connecting material 91 is shown. ing. FIG. 7- (b) shows a state when (a) is viewed in the xx line direction, and (c) shows a cross section of the yy line of (b). Simplified and shown. The same applies to FIGS. 8 to 12 below. 7- (b) and 7 (c), reference numeral 42 denotes a part of the surrounding casing 4 that exists at a position near the opposite surface of the opposing surface 51 of the column 41 as shown in FIG. 7- (c). Indicates a beam or wall (hanging wall).

  In the example of FIG. 7, as shown in FIG. 7C, similarly to the example shown in FIG. 5, a connecting member 91 such as an eyebolt constituting the connecting member 9 connects (connects) the reinforcing member 6 to the connecting member 92. . Since the joining material 92 is basically joined to the pillar 41 (the surrounding casing 4) in a section in close contact with the facing surface 51 of the pillar 41, the joining member 92 is intensively joined to the pillar 41 using a plurality of fixing materials 71. The The joining material 92 is fixed to the pillar 41 by being joined to the pillar 41. The reinforcing members 6 are arranged at an appropriate interval in the length direction (axial direction) of the connecting material 92, and are connected to a connecting material 91 such as a bolt connected to the web of the connecting material 92 at the end fixing portion 62. Connected. The reinforcing member 6 is connected to the connecting member 92 through the connecting member 91, and the connecting member 92 is bonded to the column 41 by the fixing member 71, so that the reinforcing member 6 is indirectly fixed to the column 41.

  In FIG. 7, the section closely contacting the facing surface 51 of the connecting material 92 is intensively joined to the column 41 by a plurality of fixing materials 71, and the reinforcing material 6 is connected to the other sections, whereby the facing surface 51 is connected. Since the direction of the load acting on the connecting material 92 is reversed in the close section and the other sections, in order to reinforce or stiffen the portion that transitions from the section close to the facing surface 51 to the other sections, A rib 92a is formed at the boundary of the transition portion so as to form a surface perpendicular to the web and the flange. 7- (a), the fixing portion 62 at the end of the reinforcing member 6 connected to the connecting member 91 (eye bolt) for connecting the reinforcing member 6 to the connecting member 92 shown in FIG. 7C is omitted.

  FIG. 8 shows an example in which the grooved steel binder 92 in FIG. 7 is replaced with angle steel. Also in this example, as in FIG. 7, the web of the connecting material 92 is joined by the fixing material 71 in the section in close contact with the opposing surface of the column 41, and the linear reinforcing material 6 is provided in the sections other than the section in close contact with the opposing surface 51. A rib 92a is projected from the boundary of the portion that is connected by the connecting member 91 and moves from the section in close contact with the facing surface 51 to the other section. FIG. 8- (b) shows a state when (a) is viewed in the xx line direction, and (c) shows a cross-section along the yy line of (b).

  9B, as shown in FIG. 9B, one flange of the grooved steel, which is the connecting member 92 in FIG. 7, is brought into close contact with the opposing surface 51 of the column 41 and joined to the other flange. An example in which the fixing unit 62) is connected using the connecting member 9 shown in FIG. 4 or the connecting member 91 (eye bolt) shown in FIG. (A) shows a state when the reinforcing member 6 is viewed in the axial direction, and (b) shows a cross section taken along the line yy of (a).

  10 (b), the grooved steel which is the connecting material 92 in FIG. 7 is replaced with a T-shaped steel, the flange is brought into close contact with the opposing surface 51 of the column 41, and the end of the reinforcing material 6 is joined to the web. An example in which the part (fixing part 62) is connected using a connecting member 91 is shown. The connecting member 91 shown here is a band-shaped plate formed in a U-shaped cross-section having a bent portion corresponding to the ring of the connecting member 91 (eye bolt) shown in FIG. 91 is connected to the web of the connecting material 92 (T-shaped steel) by a bolt at a flat portion other than the bent portion. (A) shows a state when the reinforcing member 6 is viewed in the axial direction, and (b) shows a cross section taken along the line yy of (a).

  FIGS. 11-13 has shown the example in case the joining material 92 is joined to the surface (intersection surface 52) which cross | intersects the surface (opposing surface 51) of the pillar 41 and the reinforcement material 6 side. 11 is similar to FIG. 7, when the web of the grooved steel binder 92 is brought into close contact with the opposing surface 51 of the column 41 and FIG. 12 is one of the grooved steel binders 92 similar to FIG. FIG. 13 shows a case where the flange of the T-shaped steel is brought into close contact with the opposing surface 51 of the column 41 and joined, as in FIG.

  In any case, the joining plates 92b and 92b that overlap the intersecting surfaces 52 and 52 of the column 41 facing each other are welded to the column 41 side, which is the back side of the portion closely contacting the facing surface 51 of the column 41, facing each other. The joining material 92 is joined to the pillar 41 by the fixing material 71 in a state where the pillar 41 is sandwiched in the horizontal direction perpendicular to the installation direction of the reinforcing material 6 in the joining plates 92b and 92b. As shown in FIG. 11 and the like, when the column 41 has a square cross section, the joining plate 92b that overlaps the intersecting surface 52 is a plate having a plane orthogonal to the opposing surface 51. The plate 92b is formed in a curved shape along the surface shape of the column 41. In this case, if a gap appears on the back surface (column 41) side of the section of the connecting material 92 that is in close contact with the facing surface 51, a filler (filler) or the like is interposed in the gap.

  FIG. 11- (b) shows the cross section of the xx line which passes along the pillar 41 of FIG. 11- (a), and the cross section of the yy line of (b) is similar to the example shown in FIG. 7- (c). Become. 12- (b) shows a cross section taken along line xx of FIG. 12- (a), and a cross section taken along line yy of (b) is the same as the example shown in FIG. 9- (b). FIG. 13B shows a cross section taken along line xx in FIG. 13A, and a cross section taken along line yy in FIG. 13B is the same as the example shown in FIG.

  In the example of FIGS. 11 to 13, the joining plates 92 b and 92 b facing each other with the column 41 sandwiched in the horizontal direction orthogonal to the installation direction of the reinforcing member 6 are joined to the column 41 and the fixing material 71 penetrating the joining plate 92 b is formed. Since the shaft portion 71a is directed in a direction that intersects, for example, perpendicular to the direction of the tension applied to the reinforcing material 6, the tension of the reinforcing material 6 is resisted by the shearing force of the shaft portion 71a. There is an advantage of high stability against slipping out.

  Also in the examples shown in FIGS. 7 to 10, as shown in FIG. 11-(a), the joining plates 92 b and 92 b that are juxtaposed on the back side (the column 41 side) of the connecting material 92 are projected so that the connecting material 92 can be 41 may be bonded to the opposing surface 51 and the intersecting surface 52. In that case, since the connecting material 92 is joined to the column 41 in two directions, the stability of the joining material 92 in the joined state to the column 41 can be enhanced. Alternatively, the number of fixing materials 71 used for the facing surface 51 and the intersecting surface 52 can be reduced. In the example shown in FIG. 11, the alternate long and two short dashes line in FIG. 11 means that the connecting material 92 may be joined to the opposing surface 51 of the column 41 using the fixing material 71.

  14 and 15 show a case in which a pedestal 10 is provided between the ceiling material 3 and the reinforcing material 6 so as to contact both the ceiling material 3 and the reinforcing material 6 and to apply tension of the reinforcing material 6 to the ceiling material 3. An example of The pedestal 10 is interposed between the lower surface of the ceiling material 3 and the reinforcing material 6, thereby functioning to increase the tension applied to the reinforcing material 6. The pedestal 10 receives the tension of the reinforcing material 6 upward to push the ceiling material 3 upward and keep it in a state where it is difficult to fall, and also keeps the ceiling material 3 held by the reinforcing material 6 when dropped. Play a role. The state where there is a clearance between the lower surface of the ceiling material 3 and the reinforcing material 6 as shown in FIGS. 4 to 6 is that the base 10 is interposed between the ceiling material 3 and the reinforcing material 6 afterwards, Or, it indicates that it is interposed.

  FIG. 14A shows an example of the arrangement of the pedestal 10 when the reinforcing member 6 is laid (stretched) between the opposing side surfaces 5 and 5 of the surrounding casing 4 in a substantially horizontal state. Here, the state in which the reinforcing member 6 is installed while being crossed in the short side direction and the long side direction of the ceiling surface is shown in particular. However, if the stability of the base 10 is secured in the installed state of the reinforcing member 6, the reinforcing member is shown. 6 may be installed only in either the short side direction or the long side direction. The right side of FIG. 14- (b) shows the arrangement state of the reinforcing material 6 in the short side direction, and the left side shows the arrangement state of the reinforcing material 6 in both directions. When the reinforcing material 6 is installed in two directions, the pedestal 10 is disposed at the intersection of the two-direction reinforcing materials 6 and 6 on the plane. Regardless of whether the reinforcing member 6 is installed in one direction or two directions, the pedestal 10 receives an upward force from the reinforcing member 6 and receives a reaction force downward from the ceiling member 3 to thereby apply a compressive force in the height direction. Received state.

  FIG. 15- (a) shows the large distance between the reinforcing material 6 and the ceiling material 3 at each part in the length direction of the reinforcing material 6 by suspending the reinforcing material 6 between the opposing side surfaces 5 and 5 of the surrounding casing 4 in a suspended curve shape. The example at the time of arrange | positioning the base 10 which has the height according to thickness to the intersection of the bi-directional reinforcement materials 6 and 6 is shown. The right side of FIG. 15- (b) shows the arrangement state of the reinforcing material 6 in the short side direction, and the left side shows the arrangement state of the reinforcing material 6 in both directions.

  In the example of FIG. 15, the pedestal 10 disposed at each portion in the length direction of the reinforcing material 6 (intersection position of the reinforcing materials 6 and 6 in the two directions) has a height corresponding to the distance between the ceiling material 3 and the reinforcing material 6. Since all the pedestals 10 can receive upward force from the reinforcing member 6 almost uniformly, the compressive force received by any particular pedestal 10 at normal times does not become excessive. Therefore, the tension of the reinforcing material 6 in contact with any specific pedestal 10 does not become excessive, and there is an advantage that the safety against breakage of the reinforcing material 6 is improved.

  16 to 18 show specific examples of manufacturing the base 10. 16- (a) and (b) are examples of manufacturing the pedestal 10 in which the groove 10a into which the two-way linear reinforcing members 6 and 6 enter is formed on the bottom side of the box-shaped or block-shaped main body. (C), (d) shows an example of manufacturing the pedestal 10 formed by connecting the pedestals 10 shown in (a), (b) in one direction. It does not matter whether the pedestal 10 has a solid cross section or a hollow cross section. The pedestal 10 is made of, for example, synthetic resin, metal, wood, or the like.

  When the grooves 10a are formed in two directions, the reinforcing members 6 and 6 in the two directions intersect with each other in a stepped state in the grooves 10a, as shown in FIGS. 16- (a) and (c). The depths of the bottoms of the grooves 10a and 10a are made different. When the base 10 is held by the reinforcing member 6 in one direction, it is sufficient that the groove 10a is inserted only in one direction.

  17 (a) and 17 (b), the flat area on the upper surface side of the pedestal 10 having the shape shown in FIGS. Thus, an example of manufacturing the pedestal 10 in the case where stability against falling when a load that is biased to the pedestal 10 is applied will be described. (C), (d) shows the manufacture example of the base 10 when the upper surface and lower surface of the base 10 of the shape shown to FIG. 17- (a), (b) are made circular shape, and it forms in a truncated cone shape.

  FIG. 18- (a) shows a case where the pedestal 10 is formed in a hollow shape in order to reduce the weight of the pedestal 10, and ribs 10b for reinforcement and stiffening are protruded from portions other than the groove 10a on the bottom surface side. A production example is shown. In this example, the ribs 10b are formed in a lattice pattern on the back side of the pedestal 10, so that the grooves 10a are formed on a part of the ribs 10b through which the reinforcing material 6 passes from the bottom side.

  Although FIGS. 14 to 18 show examples in which the pedestal 10 is suitable for the linear reinforcing material 6, the pedestal 10 is also used when the reinforcing material 6 has a planar shape (band shape). For example, if the width of the pedestal 10 falls within the range of the width of the planar reinforcing material 6, the planar reinforcing material 6 can hold the entire width of the pedestal 10, so that the pedestal 10 is stabilized in the ceiling material 3. It is possible to hold in a close contact state. In this case, it is not necessary to form the groove 10 a on the bottom surface side of the base 10.

1 …… Upper housing,
2 ... Suspension material, 3 ... Ceiling material,
4 ... Surrounding frame, 41 ... Pillar, 42 ... Hanging wall,
5: Side, 51 ... Opposing surface, 52 ... Intersection,
6: Reinforcing material, 61: Retaining, 62: Fixing part, 62a: Connection part,
7. Fixing member,
71: Fixing material, 71a: Shaft, 71b: Head,
72 …… Receiver,
8 ... Fall prevention device,
9: Connecting member, 9a: Ring, 9b ... Shaft, 91 ... Connecting material,
92 .. Connecting material, 92 a... Rib, 92 b .. joining plate,
10: pedestal, 10a: groove, 10b: rib.

Claims (7)

  Arranged in such a way that it can directly or indirectly contact the lower surface of the ceiling material supported by the suspension suspended from the upper housing, and at least in one of the surrounding housings located around the upper housing An apparatus for preventing fall of a ceiling material, comprising: a stretchable reinforcement member laid between opposing side surfaces; and a fixing member for fixing both ends of the reinforcement member in the longitudinal direction to the surrounding casing.   The fixing member includes a receiving material that holds an end portion of the reinforcing material, and a fixing material that passes through the receiving material and is fixed to the surrounding housing, and causes the receiving material to adhere to the surrounding housing. The fall prevention device for a ceiling material according to claim 1.   2. The fixing member according to claim 1, wherein the fixing member includes a connecting member to which an end portion of the reinforcing material is connected, and a fixing material fixed to the surrounding casing while being connected to the connecting member. Ceiling material fall prevention device.   The ceiling member according to claim 3, wherein the connecting member includes a connecting member to which ends of the reinforcing member are directly connected, and a connecting member connected to both the connecting member and the fixing member. Fall prevention device.   The connecting material has a length straddling between adjacent columns as the surrounding casing, the fixing material is disposed in a section overlapping the pillar of the connecting material, and the connecting material is disposed in the section overlapping the column. The ceiling material fall prevention device according to claim 4, wherein the ceiling material fall prevention device according to claim 4.   6. The apparatus according to claim 5, wherein the connecting member is joined to a surface of the column that intersects a surface on the side where the reinforcing member is installed. The pedestal that contacts both the ceiling material and the reinforcing material and imparts the tension of the reinforcing material to the ceiling material is interposed between the ceiling material and the reinforcing material. The fall prevention device for a ceiling material according to any one of claims 1 to 6.

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