JP6942934B2 - How to form a passage hole, reinforcement structure, reinforcement method, and passage hole metal fittings - Google Patents

Description

The present invention relates to a method for forming a passage hole, a reinforcing structure, a reinforcement method, and a passage hole hardware, and particularly by placing concrete in a concrete formwork, a passage hole having a bearing capacity is formed as a rising wall portion of the foundation. The present invention relates to a method of forming a passage hole, a reinforcing structure, a reinforcing method, and a passage hole metal fitting.

Traditionally, wooden houses are prone to corrosion and deterioration from the underfloor area near the ground, and regular inspections of the inside of the underfloor have been required to reduce the damage caused by collapses caused by earthquakes and typhoons. Underfloor inspections are usually carried out by people going under the floor to inspect the underfloor.

Under the tatami mats in the Japanese-style room of the old wooden house, only a wide muku board was nailed. For this reason, the tatami mats can be easily removed simply by removing the nails, so for underfloor inspections, the structure was such that the tatami mats could be easily removed anywhere.

In recent years, the demand for Japanese-style rooms has decreased, and the demand for Western-style rooms has increased. This is due to the fact that Japanese people have less habits such as eating while sitting on the floor and going to bed with futons, and the lifestyle of Japanese people has changed significantly.

In this way, in Western-style rooms where demand is increasing, flooring materials are used on the floor and the surface of corridors. If a person tries to enter under the floor by removing the laid flooring material, the removed flooring will swell, and it is difficult to reuse the removed flooring material.

In addition, even if the flooring material is partially removed each time the underfloor inspection is performed and only the removed part is replaced, it is impossible to match the grain of the flooring. After all, the flooring material is removed every time the underfloor inspection is performed. It is not realistic to replace it with a new one.

On the other hand, in Western-style rooms, which are on the increase, the number of houses equipped with floor heating equipment is increasing. Under the floor of a Western-style room where such floor heating equipment is installed, piping required for hot water floor heating and wiring required for electric floor heating are laid. Regular maintenance is also required for such floor heating equipment, and it is necessary for people to enter under the floor where piping and wiring are laid during maintenance.
However, it is very difficult to get under the floor from a Western-style room because pipes and wiring are laid here and there under the floor.

Therefore, a structure has been proposed in which a person can easily enter under the floor, such as when inspecting the underfloor, by forming a passage hole in the rising wall of the foundation, which is the lower structure of the building, in advance so that people can pass through. However, it is structurally weakened due to a cross-sectional defect due to a passage hole provided at the rising portion of the foundation. Therefore, it is inevitable to reinforce the circumference of the passage hole such as reinforcing the reinforcing bar. (See, for example, Patent Documents 1 and 2).

FIG. 10 is a side view showing an example of a conventional reinforcing structure in which the periphery of the passage hole is reinforced with reinforcing bars.
As shown in FIG. 10, a circular passage hole 2 is formed in the rising wall portion 1 of the foundation. Further, a reinforcing structure 10 is formed around the passage hole 2 to prevent the passage hole 2 from being damaged.

In the reinforcing structure 10, the diagonal bars 11 arranged in an X shape in the left-right vertical direction of the passage hole 2 and the vertical bars 12 and the horizontal bars 13 arranged so as to surround the passage hole 2 are arranged for communication. It is tied to the main bar 14 arranged in the upper part and the lower part of the hole 2.

FIG. 11 is a side view showing an example of a conventional reinforcing structure in which the periphery of the passage hole is reinforced with a support frame.
As shown in FIG. 11, a circular passage hole 2 is formed in the rising wall portion 1 of the foundation. Further, a reinforcing structure 20 is formed around the passage hole 2 to prevent the passage hole 2 from being damaged.

The reinforcing structure 20 includes a diagonal member 21 made of flat steel arranged in an X shape in the left-right vertical direction of the passage hole 2 and a horizontal member 22 made of angle steel installed above and below the passage hole 2. I have. The reinforcing structure 20 is embedded inside the foundation rising wall portion 1 to prevent the passage hole 2 from being damaged.

In the reinforcing structure 20 of FIG. 11, the rigidity of the reinforcing structure is strengthened by arranging the reinforcing structure 10 of the passage hole by the reinforcing bar of FIG. 10 and the support frame made of angle steel or flat steel around the passage hole 2. It was done. However, in these reinforcing structures 10 and 20, since the periphery of the circular passage hole 2 is reinforced with reinforcing bars or support columns, the size of the passage hole 2 is inevitably limited.

Therefore, the passage holes 2 in FIGS. 10 and 11 become circular, and the widths of the upper and lower portions of the passage holes 2 become narrower. For this reason, aside from the large foundation wall, the circular passage hole 2 is often unsuitable for small and medium-sized foundations, and has a shape that makes it difficult for people to pass through.
Therefore, a human passage hole has been proposed in which the size of the human passage hole 2 is formed to be necessary and sufficient so that a person can easily pass through the hole (see, for example, Patent Document 3).

FIG. 12 is a side view showing a conventional reinforcing structure in which the periphery of a rectangular passage hole is reinforced.
As shown in FIG. 12, the rising wall portion 1 of the foundation is formed with a rectangular communication hole 3 in which the upper portion of the rising wall portion 1 of the foundation is open. Further, a reinforcing structure 30 is formed around the passage hole 3 to prevent the passage hole 3 from being damaged.

The reinforcing structure 30 has an upper end muscle 31 arranged in the upper part of the passage hole 3, an abdominal muscle 32 and a lower end muscle 33 arranged in the lower part of the passage hole 3, and reinforcements arranged on the left and right sides of the passage hole 3. It includes an oblique muscle 34, an upper end muscle 31, an abdominal muscle 32, a lower end muscle 33, and a rib muscle 35 connecting the oblique muscle 34.

The rectangular passage hole 3 reinforced by the reinforcing structure 30 is formed so as to open the upper portion of the foundation rising wall portion 1, so that the upper portion and the lower portion which are narrowed in the circular passage hole 2 are formed. The width is wide and the shape is easy for people to pass through.

In this way, the rectangular passage hole 3 in which the upper part of the rising wall of the foundation is opened so that people can easily pass through becomes a structural weakness from the lower part to the corner of the passage 3, so that the rising wall of the foundation A part in the length direction of the part is cut by the width of the passage hole to provide a notch for the passage hole, and a lightweight channel frame with matching shape and dimensions is set in the mark and fixed to the anchor bolt. Anchor holes have been proposed (see, for example, Patent Document 4).

FIG. 13 is a side view showing an example of a conventional reinforcing structure in which the periphery of the passage hole is reinforced.
As shown in FIG. 13, a passage hole 4 is provided in the foundation rising wall portion 1, and a reinforcing member 40 is attached around the passage hole 4.

The reinforcing member 40 is a pair of side frame members 41 attached to both sides of a passage hole 4 formed in the foundation rising wall portion 1, and an upper frame member 42 arranged between the upper portions of the pair of side frame members 41. And a lower frame member 43 arranged between the lower parts of the pair of side frame members 41, and a connecting member for connecting the upper frame member 42 and the lower frame member 43 to the pair of side frame members 41 so that their positions can be adjusted. It has.

Specifically, the connecting members include a connecting plate 44 which is vertically adjustable on the side frame member 41 and the upper frame member 42 or the lower frame member 43 via at least an elongated hole 45, and the side frame member 41 and the upper frame. It is composed of bolts 46 and nuts 47 for fixing the member 42 or the lower frame member 43 through the elongated holes 45, respectively.

Japanese Unexamined Patent Publication No. 2013-87504 Japanese Unexamined Patent Publication No. 2016-8460 Japanese Unexamined Patent Publication No. 9-24222258 Japanese Unexamined Patent Publication No. 2016-8385

However, according to the passage hole reinforcement structure by the reinforcing member 40, although the width direction of the side frame member 41 can be adjusted, a gap is generated between the side frame member 41 and the foundation rising wall portion 1 when the side frame member 41 is fixed. There is a problem that it is difficult to fix the cloth foundation tightly to the part 1 and it is structurally difficult to construct the cloth foundation continuously.

The present invention has been made in view of these points, and is a person having a necessary and sufficient size for a person to pass through the rising wall of a housing foundation, and having strength and ease of construction. It is an object of the present invention to provide a method for forming a passage hole, a reinforcing structure, a reinforcing method, and a passage hole metal fitting capable of forming the passage hole.

In the present invention, in order to solve the above problem, in a method of forming a passage hole having a bearing capacity formed on the rising wall portion of the foundation, from the lower part of the passage hole to the top end of the rising wall portion of the foundation. , The process in which the frame body forming the side wall of the passage hole is sandwiched and fixed by the concrete formwork by the thickness width of the rising wall portion of the foundation to be formed, and the beam material is horizontal to the top end of the frame body. A step of connecting and fixing the concrete formwork and a step of removing the concrete formwork while leaving the frame body and the beam material formed on the rising wall portion of the foundation after the cast concrete is hardened. A method for forming a communication hole is provided.

As a result, the frame body that forms the side wall of the passage hole with the thickness width of the rising wall portion of the foundation formed from the lower part of the passage hole to the top of the rising wall portion of the foundation becomes a concrete formwork. After being sandwiched and fixed, the beam material is fixed by horizontally connecting the top ends of the frame body, and the cast concrete is hardened, the frame body and the beam material are formed on the rising wall portion of the foundation. Remove the concrete formwork while leaving it.

Further, in the present invention, in the structure for reinforcing the passage hole formed in the rising wall portion of the foundation, the side wall of the passage hole extends from the lower part of the passage hole to the top end of the rising wall portion of the foundation. A reinforcing structure for a passage hole is provided, which comprises a frame body forming the frame and a beam material for horizontally connecting and fixing the top ends of the frame body.
As a result, the frame body forms a side wall of the communication hole from the lower part of the communication hole to the top end of the rising wall portion of the foundation, and the beam material is fixed by horizontally connecting the top ends of the frame body.

Further, in the present invention, in the method of reinforcing the passage hole for reinforcing the passage hole formed in the rising wall portion of the foundation, the frame body extends from the lower part of the passage hole to the top end of the rising wall portion of the foundation. Provided is a method for reinforcing a human passage hole, which comprises a step of forming a side wall of the through hole and a step of horizontally connecting and fixing the top end of the frame body.
As a result, the frame body forms a side wall of the communication hole from the lower part of the communication hole to the top end of the rising wall portion of the foundation, and the beam material is fixed by horizontally connecting the top ends of the frame body.

Further, in the present invention, in the passage hole metal fitting for reinforcing the passage hole formed in the rising wall portion of the foundation, a side wall of the passage hole is formed from the lower part of the passage hole to the top end of the rising wall portion of the foundation. Provided is a perforated metal fitting characterized by comprising a frame body to be formed and a beam member for which the top end of the frame body is horizontally connected and fixed.
As a result, the frame body forms a side wall of the communication hole from the lower part of the communication hole to the top end of the rising wall portion of the foundation, and the beam material is fixed by horizontally connecting the top ends of the frame body.

According to the method for forming a passage hole, the reinforcing structure, the reinforcing method, and the passage hole metal fitting of the present invention, the thickness width of the rising wall portion of the foundation to be formed is the thickness and width of the rising wall portion of the foundation to be formed. To the top of the rising wall, the frame that forms the side wall of the passage hole was sandwiched and fixed by the concrete mold, and the beam material was fixed by connecting the top of the frame horizontally and placed. After the concrete has hardened, the concrete form is removed while leaving the frame and beam material formed on the rising wall of the foundation, so it is large enough for people to pass through the rising wall of the foundation. It is possible to form a passage hole capable of forming a passage hole having a strength and ease of construction.

It is an overall perspective view which shows the state after forming the passage hole by the passage hole metal fitting which concerns on 1st Embodiment. It is a perspective view which shows the assembly detail of a human passage metal fitting. It is an exploded view which shows the joining method of the human hole metal. It is a perspective view which shows the state which the passage hole metal fitting is installed in the concrete formwork in order to form the passage hole in the foundation rising wall part. It is a figure which shows the state that the passage hole metal fitting was fixed to the auxiliary bar inside the installed concrete formwork. It is a figure which shows the state which concrete was placed in the concrete formwork. It is a figure which shows the state that the removal work of a concrete formwork progressed to a passage hole after concrete hardening. It is a perspective view which shows the detail of the passage hole metal fitting which concerns on 2nd Embodiment. It is a perspective view which shows the detail of the passage hole metal fitting which concerns on 3rd Embodiment. It is a side view which shows an example of the conventional reinforcement structure which reinforced the circumference of a passage hole with a reinforcing bar. It is a side view which shows an example of the conventional reinforcement structure which reinforced the circumference of a passage hole with a support frame. It is a side view which shows the conventional reinforcement structure which reinforced the circumference of a rectangular passage hole. It is a side view which shows an example of the conventional reinforcement structure which reinforced the circumference of a passage hole.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 is an overall perspective view showing a state after the passage hole hardware according to the first embodiment forms a passage hole.

As shown in FIG. 1, the passage hole hardware 100 is a device for forming a passage hole 300 in the foundation rising wall portion 210 of the housing foundation 200 when the housing foundation 200 is formed. Further, after the housing foundation 200 is formed, the communication hole hardware 100 is a device for reinforcing the communication hole 300 while being buried in the housing foundation 200.

The communication hole metal fitting 100 is a frame-type box body composed of a frame body 110 and a trapezoidal beam 120.
The frame 110 is a rectangular frame in which metal plates are joined in a “U” shape with an open upper side in a cross section in the short side direction. Further, the frame body 110 is embedded in the rising portion wall portion 210 along the longitudinal direction of the housing foundation 200 with the open opening of the frame body 110 as the upper surface.

The frame body 110 includes two side plate 111 and a bottom plate 112.
The side plate 111 is made of metal and has the same width as the thickness of the foundation rising wall portion 210 of the housing foundation 200 to be formed and the same height as the height of the passage hole 300 formed in the foundation rising wall portion 210. It is a plate material.

Premature deterioration can be prevented by using a metal having strong corrosion resistance such as a hot-dip galvanized steel sheet, a stainless steel sheet, or a resin-coated metal plate. The two side plate 111s constituting the frame body 110 are provided along the height direction of the foundation rising wall portion 210 so as to face each other in the length direction of the foundation rising wall portion 210.

The bottom plate 112 is made of metal and has the same width as the thickness of the foundation rising wall portion 210 of the housing foundation 200 to be formed and the same length as the width of the passage hole 300 formed in the foundation rising wall portion 210. It is a plate material. As the material, it is desirable to use a metal having strong corrosion resistance such as a hot-dip galvanized steel plate as in the side plate 111.

The bottom plate 112 is installed horizontally toward the longitudinal direction of the foundation rising wall portion 210, and two side plate 111s are vertically fixed to both ends of the bottom plate 112 in the short side direction. As a result, in the frame 110, the two side plates 111 and the bottom plate 112 are joined in a "U" shape with the upper side open in the short side cross section.

The trapezoidal beam 120 includes a top plate 121 and two trapezoidal flange plates 122 as beam materials.
The top plate 121 has the same width as the thickness of the foundation rising wall portion 210 of the housing foundation 200 formed in the same manner as the bottom plate 112, and the same length as the width of the communication hole 300 formed in the foundation rising wall portion 210. It is a constructed metal flange plate material. The upper surface plate 121 is fixed to the zenith of the frame 110 so as to close the opening of the frame 110 formed in a "U" shape with the upper side open in the cross section in the short side direction.

The trapezoidal flange plate 122 is a plate material having a "U-shaped" cross section in the short side direction. The trapezoidal flange plate 122 is vertically fixed to both side surfaces of the upper surface plate 121 in the longitudinal direction along the longitudinal direction of the housing foundation 200 in a side view. The fixed position is such that the trapezoidal haunch near both ends of the trapezoidal flange plate 122 in the longitudinal direction is applied to the joint between the top plate 121 and the side plate 111, and the bottom of the central portion of the trapezoidal flange plate 122 is on the top. The face plate 121 is attached so that the bottom surface and the height direction are at the same position, and is formed in a trapezoidal arch shape in the longitudinal side view.

As a result, the trapezoidal beam 120 has an increased moment of inertia of area as compared with a mere horizontally connected horizontal beam. In addition, it can be expected to reduce deformation due to the arch effect. Further, since the cross section in the short side direction is also formed in a groove shape, the bending strength is increased. The material of the trapezoidal beam 120 is the same as that of the frame 110.

The communication hole hardware 100 configured as described above is accurately installed or fixed at a predetermined position in the concrete formwork when the concrete formwork of the housing foundation 200 is assembled, and is bound or spot welded to the surrounding reinforcing reinforcing bars. After being connected with, it will be embedded as it is when placing concrete. A waterproof seal may be provided in advance around the opening surface of the passage hole 300.

After the demolding, the through-hole metal fitting 100 embedded and integrated in the formed foundation rising wall portion 210 is in close contact with the concrete in which the two side plate 111, the bottom plate 112, and the top plate 121 are placed. Since the inner surface of the passage hole 300 is reinforced, the passage hole 300 having a durable strength can be formed.

The passage hole 300 formed in this way bears the stress acting in the longitudinal direction of the housing foundation 200 by the metal passage hole metal fitting 100, and is fixed on the wall portion 210 of the rising portion of the foundation. Even when the base 400 is loaded, it is possible to prevent and suppress damage to the housing foundation 200 caused by the upper stress caused by the space portion due to the passage hole 300.

The housing base 400 to be installed on the foundation rising wall portion 210 in the future is installed along the upper part in the longitudinal direction of the foundation rising wall portion 210. The upper part of the communication hole hardware 100 is set by being fitted into a groove of a trapezoidal beam 120 formed by two trapezoidal flange plates 122 facing each other with a housing base 400.

Further, in the housing base 400, the anchor bolt holes 410 provided in the housing base 400 and the bolt holes 123 drilled in the upper surface plate 121 according to the positions of the anchor bolts 131 are aligned and connected by the anchor bolts 131.

As a result, the housing foundation 400 and the communication hole hardware 100 fixed to the housing foundation 200 are integrated, so that the stress caused by the superstructure applied to the housing foundation 400 is applied to the housing foundation 200 and the housing foundation 200. It can be supported by a fixed through-hole hardware 100. As a result, the passage hole 300 is not overloaded, and the passage hole 300 can be prevented from being damaged.

The communication hole 300 formed in this way makes it possible to keep the communication hole 300 in a necessary and sufficient size even if the upper part of the foundation rising wall portion 210 is opened. Furthermore, by strengthening the upper side of the opened passage hole 300 with the trapezoidal beam 120, structural deformation is suppressed by the arch effect, and the upper surface plate of the passage hole hardware 100 has while maintaining the size of the passage hole 300. It is possible to directly support the housing base 400 with respect to 121.

Further, the passage hole hardware 100 is firmly anchored to the housing foundation 200 by anchor bolts 131 inserted into a plurality of anchor holes 113 provided in the top plate 121, the side plate 111, and the bottom plate 112, and is caused by the upper load. Since the total stress to be applied can be efficiently and uniformly applied to the entire foundation, the balance of the foundation structure can be improved as a whole, which can contribute to the stability of the superstructure.

FIG. 2 is a perspective view showing the assembly details of the human passage metal fitting.
As shown in FIG. 2, the frame body 110 includes two side plate 111s having angle ribs 114 and a bottom plate 112 having angle ribs 115.

The angle ribs 114 and the angle ribs 115 are reinforcing materials for preventing buckling of the side plate 111 and the bottom plate 112, and increase the rigidity as a whole to prevent distortion during assembly, and the through-hole hardware 100. It is installed to maintain horizontal and vertical, prevent local buckling of the side plate, and improve the adhesion between the through-hole hardware 100 and the concrete to be cast.

Here, in the bottom surface portion of the through-hole hardware 100, in order to prevent buckling of both ends of the bottom surface plate 112 and to prevent deformation during consolidation, the bottom surface of the bottom surface plate 112 and the outside of the bottom surface plate 112 in the long side direction. Angle ribs 115 are welded to the ends so as to face each other.

Similarly, also on the side surface portion of the passage hole hardware 100, in order to reinforce the buckling prevention of the side plate 111, the outside of the two side plate 111s facing the long side direction of the housing foundation 200 in a side view and The angle ribs 114 are welded to the outer ends of the side plate 111 in the long side direction so as to face each other.

FIG. 3 is an exploded view showing a method of joining the human passage metal fittings.
As shown in FIG. 3, the passage hole metal fitting 100 is assembled from a trapezoidal beam 120 composed of a top plate 121 and a trapezoidal flange plate 122, and a frame body 110 composed of two side plate 111 and a bottom plate 112.

An example of a method of joining the frame body 110 and the trapezoidal beam 120 is shown below.
The joint between the side plate 111 and the bottom plate 112 constituting the frame body 110 is attached at a right angle at the lower end of the side plate 111 via the angle piece 116. Further, the joint between the frame body 110 and the trapezoidal beam 120 is attached at a right angle at the upper end of the side plate 111 via the angle piece 124.

These joints are welded or joined to the pre-provided mounting holes a by mounting nuts 117, 125 and mounting bolts 118, 126. The mounting nuts 117 and 125 may be welded according to the position of the mounting hole a.
Further, in order to shorten the construction period, it is possible to weld the joint portion of the trapezoidal beam 120 first, which is efficient in the process.

The angle piece 116 is welded in a direction facing each other from the short side end portion of the upper surface of the bottom plate 112 to a position inside the long side direction by the thickness of the side plate 111. Similarly, the angle piece 124 is welded in a direction facing each other from the short side end portion of the lower surface of the upper surface plate 121 to a position inside the long side direction by the thickness of the side plate 111.

Further, by welding corner ribs 119 made by processing a metal plate material into a vertical triangle at four corners on the side surface where the side plate 111 and the bottom plate 112 are vertically fixed, the rigidity of the through-hole hardware 100 is obtained. Can be further increased.

Further, in this embodiment, when joining the frame body 110 and the trapezoidal beam 120, an example of joining by welding or joining the mounting nut 125 and the mounting bolt 126 has been given, but depending on the situation at the construction site, the mounting bolt 126 may be used. It is preferable to use a long nut that has. It is also possible to select by welding to the outside of the through-hole hardware 100 and fixing it from the inside of the through-hole hardware 100 with a mounting bolt 126.

As a result, when it becomes necessary to remove the trapezoidal beam 120 for some reason after the housing foundation 200 having the passage hole 300 is formed, it is easy to simply remove the mounting bolt 126 tightly connected from the inside of the passage hole hardware 100. The trapezoidal beam 120 can be removed.

Anchor holes 113 are previously formed at desired positions in the two side plate 111 and the bottom plate 112. This is used for fixing the through-hole hardware 100, and the fixing method will be described later.

FIG. 4 is a perspective view showing a state in which a passage hole hardware is installed in a concrete formwork in order to form a passage hole in the foundation rising wall portion.
As shown in FIG. 4, as the groundwork for forming the foundation rising wall portion 210 having the passage hole 300, after cracking, blinding, tamping, and leveling the mortar, the concrete formwork 600 is installed and the reinforcement 500 is arranged. Assembly and installation of the communication hole hardware 100 are carried out in parallel.

During that time, the passage hole hardware 100 is installed so as to be sandwiched at a predetermined position in the concrete form 600, and when the reinforcement 500 is arranged, the side plate 141 and the bottom plate of the frame body 110 of the passage hole hardware 100 are provided. Bundling the anchor bolt 131 protruding from 142.

The passage hole hardware 100 is fixed to the end of the bar arrangement 500 by wire connection or spot welding, and is installed so that the top ends of the concrete form 600 of the top plate 121 of the passage hole hardware 100 coincide with each other. The opening of the communication space of the communication hole metal fitting 100 is closed by binding the communication hole metal fitting 100 with a stopper so as to sandwich the communication hole metal fitting 100 with the opposite formwork metal foam 610 so as to surround the reinforcing bar 500. Will be installed.

At this time, by arranging auxiliary bars 511 along the outside of the frame body 110 and tightly binding the protruding anchor bolts 131, the anchorage between the human communication hole hardware 100 and the housing foundation 200 becomes stronger. Become.

The reinforcement 500 of the wall portion 210 of the foundation rising portion is assembled at a portion other than the position where the passage hole 300 is formed, and the two side plates 111 and the top plate of the frame body 110 forming the passage hole hardware 100 are formed. After bundling or spot welding with a plurality of anchor bolts 131 protruding from 121, the concrete 211 is cast and hardened as it is, and then the die is removed while the human hole metal 100 is embedded, so that the completed human hole metal 100 can be obtained. appear.

FIG. 5 is a diagram showing a state in which the passage hole hardware is fixed to the auxiliary bar inside the installed concrete formwork.
As shown in FIG. 5, the passage hole metal fitting 100 is fixed to the reinforcing bar 500 by the anchor bolt 131.

Specifically, the anchor bolts 131 are inserted into the anchor holes 113 provided in advance in the side plate 111 and the bottom plate 112 of the human passage metal fitting 100 from the inside to the outside to the side. It is welded to the face plate 111 and the bottom plate 112.

Anchor bolts 131 protruding and fixed from the periphery of the through-hole hardware 100 are bound or spot-welded to the reinforcing bars 500 around the through-hole hardware 100.
For example, the anchor bolt 131 welded to the anchor hole 113 formed in the bottom plate 112 is fixed so that the anchor bolt 131 projects downward from the passage hole hardware 100.

Further, the anchor bolt 131 welded to the anchor hole 113 formed in the side plate 111 is fixed so that the anchor bolt 131 protrudes horizontally from the passage hole hardware 100. Then, the anchor bolt 131 protruding horizontally from the through-hole metal fitting 100 is fixed to the main bar 520 or the auxiliary bar 511 horizontally arranged on the side surface of the through-hole metal fitting 100 by a binding wire or spot welding.

As a result, the passage hole hardware 100 is fixed to the reinforcing bar 500, and the concrete formwork 600 is sandwiched and installed so as to cover the passage space of the passage hole 300. Therefore, the passage hole hardware 100 is placed in the concrete form 600. Can be fixed exactly inside the.

FIG. 6 is a diagram showing a state in which concrete is placed in a concrete formwork.
As shown in FIG. 6, since the communication hole metal fitting 100 is covered with the concrete formwork 600, only the trapezoidal beam 120 of the communication hole metal fitting 100 can be seen from the outside. ..

FIG. 7 is a diagram showing how the work of removing the concrete formwork has progressed to the passage hole after the concrete has hardened.
Of the foundation rising wall 210 in which the communication hole hardware 100 is installed in the concrete formwork 600, the communication space inside the communication hole hardware 100 from which the concrete 211 did not flow remains as it is, and the space portion thereof. The human passage hole metal 100 is formed in the foundation rising wall portion 210 as a human passage hole 300.
Further, in the passage hole 300 formed in the foundation rising wall portion 210, after demolding, the side wall of the passage hole 300 is formed as it is as the passage hole hardware 100.

The through-hole hardware 100 of the present invention has strength by itself, and since the foundation rising wall portion 210 and the through-hole hardware 100 are in close contact with each other, it is safe against the transmission stress from the foundation. .. Further, the angle ribs 114 and 115 of the through-hole hardware 100 increase the resistance to local destruction of the side plate 111 and the bottom plate 112.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The through-hole hardware of the present embodiment is substantially the same as the configuration shown in the first embodiment except that the shape of the frame body 110 is different. Therefore, the same components as those in the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted as appropriate.

FIG. 8 is a perspective view showing details of the through-hole hardware according to the second embodiment.
As shown in FIG. 8, the passage hole hardware 100 includes a frame-shaped box 140 composed of two side plate 141, a bottom plate 142, and two trapezoidal flange plates 143, and a trapezoidal beam 120.

The trapezoidal flange plate 143 is a plate material having a "U-shaped" cross section in the short side direction, and has the same shape as the trapezoidal flange plate 122. The trapezoidal flange plate 143 is provided so that the trapezoidal flange plate 122 and the trapezoidal flange plate 143 of the trapezoidal beam 120 are vertically symmetrical.

The trapezoidal flange plate 143 is vertically fixed to both side surfaces of the bottom plate 142 in the longitudinal direction along the longitudinal direction of the housing foundation 200 in a side view. The fixed position is such that the trapezoidal curved portions near both ends in the longitudinal direction of the trapezoidal flange plate 143 cover the joint between the bottom plate 142 and the side plate 141, and the bottom surface side of the central portion of the trapezoidal flange plate 143 is located. , The bottom plate 142 is attached so that the height directions are the same, and is configured in a folded plate arch shape in the longitudinal side view.
As a result, the frame-type box 140 has more cross-sectional coefficients than the horizontally connected horizontal beams. Further, since the cross section in the short side direction is also formed in a groove shape, the bending strength is increased.

In this embodiment, the upper and lower trapezoidal metal fittings 100 are configured to be symmetrical, but the upper and lower trapezoidal flange plates 122 and 143 are inversely symmetrical so that the trapezoidal peaks are in the same direction and face each other. The lower side of the two side plate 141 is shortened, and instead the angle rib 144 provided on the side plate 141 is extended to form a leg portion so as to maintain the horizontal stability of the passage hole hardware 100. It is also possible.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. The through-hole hardware of the present embodiment is substantially the same as the configuration shown in the first embodiment except that the shape of the frame body 110 is different. Therefore, the same components as those in the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted as appropriate.

FIG. 9 is a perspective view showing details of the through-hole hardware according to the third embodiment.
As shown in FIG. 9, the passage hole hardware 100 includes a trapezoidal beam 120 and a frame-shaped box 150.

The frame-shaped box 150 is a curved surface of a frame 110 in which a side plate 111 and a bottom plate 112 are joined in a "U" shape with an open upper side in a cross section in the short side direction. ..
The side plate 151 of the frame type box 150 is processed from a single metal plate having a curved surface along the positions of the side plate 111 and the bottom plate 112.

Further, on the outside of the side plate 151, two flat steel ribs 152 welded along the side plate 151 are welded so as to be parallel to the side plate 15. The flat steel rib 152 prevents distortion of the joint between the trapezoidal beam 120 and the frame body 110, keeps the perforated hardware 100 horizontal and vertical, and prevents local destruction of the side plate 151.

As a result, the passage hole 300 formed in the housing foundation 200 is completely reinforced by the passage hole hardware 100, so that the rising portion wall portion 210 formed in the housing foundation 200 also resists the reaction force from below. It is possible to form a powerful human passage hole 300.

Further, by making the surface in contact with the lower portion of the passage hole 300 formed with the passage hole hardware 100 curved, the lower corner portion of the lower side of the frame 110 is not formed, so that the lower portion of the passage hole hardware 100 is covered. Since the stress is dispersed, the passage hole metal fitting 100 is likely to be stable when it is installed on the foundation rising wall portion 210.

Further, by making the lower part of the passage hole hardware 100 curved, the stress concentrated on the lower corner of the formed passage hole 300 is dispersed along the curved surface, so that the passage hole 300 is prevented from being damaged. Can be done.

Further, by making the lower part of the through-hole hardware 100 curved, the resistance due to the through-hole hardware 100 at the time of placing the concrete 211 is reduced, so that the placed concrete 211 is also placed on the lower side of the through-hole hardware 100. It is easy to flow and it is difficult for junkers (bean plates) to come out. This makes it easier to integrate the housing foundation 200 and the human communication hole hardware 100.

In this embodiment, the passage hole hardware is installed between the concrete formwork 600 before the concrete 211 is placed, the concrete 211 is placed, and the communication hole 300 having a proof stress is formed after the concrete 211 is hardened. As shown in the example, the passage hole 300 is formed in the pre-formed foundation rising portion wall portion 210, and the passage hole metal 100 is fitted into the formed passage hole 300 to form a passage hole. The 300 may be reinforced.

1,210 Rising wall part 2, 3, 4, 300 Personnel holes 10, 20, 30 Reinforcing structure 11, 34 Oblique bar 12 Vertical bar 13 Horizontal bar 14,520 Main bar 15, 111, 141, 151 Side plate 21 Oblique member 22 Cross member 31 Upper end muscle 32 Abdominal muscle 33 Lower end muscle 35 Rib muscle 40 Reinforcing member 41 Side frame member 42 Upper frame member 43 Lower frame member 44 Connecting plate 45 Long hole 46 Bolt 47 Nut 100 Personnel hole Hardware 110 Frame body 112, 142 Bottom Face plate 113 Anchor hole 114, 115, 144 Angle rib 116, 124 Angle piece 117, 125 Mounting nut 118, 126 Mounting bolt 119 Corner rib 120 Trapezoidal beam 121 Top plate 122, 143 Trapezoidal flange plate 123 Bolt hole 131, 410 Anchor bolt 140 , 150 Frame type box 152 Flat steel rib 200 Residential foundation 211 Concrete 400 Residential base 500 Reinforcement 511 Auxiliary reinforcement 600 Concrete form 610 Form frame Metal foam a Mounting hole b Trapezoidal haunch

Claims (12)

In the method of forming a passage hole having a bearing capacity formed on the rising wall of the foundation,
From the lower part of the passage hole to the top of the rising wall of the foundation, the frame that forms the side wall of the passage is sandwiched between the concrete formwork with the thickness and width of the rising wall of the foundation. The process of being fixed and
A beam material having a trapezoidal arch-shaped flange plate provided so as to project upward along both side surfaces of the rising wall portion of the foundation in the longitudinal direction is fixed by horizontally connecting the top ends of the frame body. Process and
After the cast concrete has hardened, the step of removing the concrete formwork while leaving the frame body and the beam material on the rising wall of the foundation, and
A method for forming a human hole, which comprises. The beam material is
It should be provided so as to cover the joint with the frame.
The method for forming a passage hole according to claim 1. The frame is
The side plate that supports the side of the passage hole and
The bottom plate that supports the bottom of the passage hole and
The method for forming a passage hole according to claim 1, wherein the method is provided. The frame is
The method for forming a passage hole according to claim 3, wherein the side surface plate and the bottom surface plate are connected by a curved surface. The joint portion where the frame body and the beam member are in contact with each other, or the joint portion where the side surface plate and the bottom surface plate are in contact with each other is
Reinforcing part for reinforcing the connection of the joint part,
3. The method for forming a passage hole according to claim 3. The reinforcing portion is
An angle piece provided along the inside of the joint portion to vertically support the joint portion in which the frame body and the beam member are in contact with each other or the joint portion in which the side surface plate and the bottom plate are in contact with each other. ,
5. The method for forming a passage hole according to claim 5. The reinforcing portion for reinforcing the joint portion in which the side plate and the bottom plate are in contact is
A corner rib provided so as to connect the end side of the side plate and the end side of the bottom plate at the joint portion.
5. The method for forming a passage hole according to claim 5. The frame is
Convex portions on the surface of the frame and the surface in contact with the rising wall of the foundation.
The method for forming a passage hole according to claim 1, wherein the method is provided. The frame is
Fixing means for connecting and fixing to the reinforcing bars arranged around the human passage hole,
The method for forming a passage hole according to claim 1, wherein the method is provided. In the reinforcement structure of the passage hole that reinforces the passage hole formed in the rising wall of the foundation,
From the lower part of the passage hole to the top of the rising wall of the foundation, the frame that forms the side wall of the passage hole,
A beam material provided with a trapezoidal arch-shaped flange plate provided so as to project upward along both side surfaces of the rising wall portion of the foundation in the longitudinal direction, and the top ends of the frame are horizontally connected and fixed. ,
Reinforced structure of the passage hole, which is characterized by being provided with. In the method of reinforcing the passage hole for reinforcing the passage hole formed in the rising wall of the foundation,
The process in which the frame forms the side wall of the passage hole from the lower part of the passage hole to the top of the rising wall of the foundation.
A beam material provided with a trapezoidal arch-shaped flange plate provided so as to project upward along both side surfaces of the rising wall portion of the foundation in the longitudinal direction is fixed by horizontally connecting the top ends of the frame body. Process and
A method of reinforcing a human hole, which is characterized by providing. In the passage hole hardware that reinforces the passage hole formed in the rising wall of the foundation,
From the lower part of the passage hole to the top of the rising wall of the foundation, the frame that forms the side wall of the passage hole,
A beam material provided with a trapezoidal arch-shaped flange plate provided so as to project upward along both side surfaces of the rising wall portion of the foundation in the longitudinal direction, and the top ends of the frame are horizontally connected and fixed. ,
Personnel hole hardware characterized by being equipped with.

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