JP2516812B2 - Damping wall structure with shear force transmitter and energy absorber - Google Patents

Description

The present invention relates to a damping wall having an energy absorbing device in a building.

(Prior Art) Conventionally, as this type, (i) the outer periphery of the PC wall plate in the frame is attached to the peripheral frame by a perforated plate, and when the frame is largely deformed by an earthquake, the plate is plastically deformed. Vibration damping wall constructed so as to reduce the vibration of the building by the plastically absorbed energy, (ii) as shown in JP-A-57-130677, the upper or lower end of the wall is fixed to the frame. A damping wall having the other end attached to a frame through an energy absorbing member made of H-shaped steel, grooved steel, box, etc. (iii) As shown in JP-A-50-4836, A vibration damping wall has been proposed in which an energy absorbing device, which is a combination of a steel plate and a steel rod, is interposed between the wall to be attached and the wall.

(Problems to be Solved by the Invention) In the first damping wall, the mounting plate of the PC wall plate receives a horizontal force (shearing force) and a vertical force (axial force), and the building is subjected to an earthquake. When deformed by, the end portion of the plate is buckled by the axial force, it is difficult to maintain the shear strength, and the energy absorption capacity is reduced.

Similar to the first damping wall, the second damping wall causes a reduction in the capacity of the energy absorbing member due to the axial force.

The third damping wall has a complicated structure because a steel rod is projected from the PC wall plate and the steel rod and the iron plate are welded to each other.

Further, in each of the above-mentioned damping walls, when the energy absorbing member yields, the burden of shearing force on the wall does not increase, the steelness of the entire frame becomes small, and the deformation becomes large.

The present invention has been proposed in order to solve the above-mentioned problems of the prior art. The object of the present invention is to reduce building vibration, improve seismic safety, and appropriately distribute building power. , The point is to provide a damping wall structure that does not significantly deform the building.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the damping wall structure according to the present invention has a structure in which the upper side or the lower side of the outer peripheral four sides of the wall plate mounted in the frame composed of columns and beams is It is fixed to the skeleton, an energy absorbing member is attached to the other side, a hollow shearing force transmitting member whose member cross section is parallel to a column is attached to the side, and a wall plate is joined to the skeleton via each member. Has been done.

(Operation) Since the present invention is configured as described above, the vibration energy is absorbed by the deformation of the energy absorbing member due to the horizontal deformation between the wall plate and the beam.

Further, the shear force transmission member transmits the shear force between the column and the wall plate, and the force transmission between the frame and the wall plate is appropriately distributed.

(Examples) The present invention will be described below with reference to illustrated examples.

(A) and (B) are the columns and beams that make up the frame of the building,
(C) is a PC wall board.

The joint plate (1) fixed to the lower end of the wall plate (C) is joined to the joint plate (2) fixed to the lower beam (B) via bolts (3), and thus the PC wall plate (C). ) Is fixed to the lower beam (B).

A joint plate (4) fixed to both left and right side surfaces of the wall plate (C) and a hollow shear force transmission member (5) made of a grooved steel material having both side flanges fixed to the inner surface of the column (A) are provided. The member (5) is attached so that its cross section is parallel to the pillar (that is, the opening end face cannot be seen from the paper surface), and the joint piece (6) projecting from the web portion of the member (5) is connected to the bolt (7). Are joined through.

Further, both ends of a cylinder type damper (10) are connected by pins to the upper end surface of the wall plate (C) and the brackets (8) and (9) projecting from the lower flange of the upper beam (B). .

The damper (10) constitutes the energy absorbing member.

Since the illustrated embodiment is configured as described above,
The axial force N generated between the pillar (A) and the wall plate (C) during an earthquake or the like is the web portion (5a) of the shear force transmission member (5) made of grooved steel material attached to the pillar (A). ) Is controlled so that the axial force becomes excessive by deforming as shown by the dotted line in FIG. 4, and the shearing force Q is maintained so as to be transmitted between the column (A) and the wall plate (C). To do.

The shearing force generated between the wall plate (C) and the beam (B) is transmitted through the damper (10), and at this time, the vibration energy of the building is transmitted by the damper (10) to the pillar (A) and the wall plate ( The horizontal deformation between C and C and the damping force are absorbed as damping energy, and the vibration of the building is reduced.

Further, the shearing force transmitted to the wall plate (C) is also transmitted to the other column (B) via the shearing force transmitting member (5), and thus the transmission of force is appropriately concentrated without being partially concentrated. The upper end surface of the wall plate (C) may be fixed to the upper beam and the energy absorbing device may be attached to the lower end surface of the wall plate (C).

The shearing force transmitting piece is made of a hollow box-shaped steel material (15) as shown in FIGS. 6 and 7, and the joint piece (6) projecting from both ends of the steel material (15) is The box-shaped steel material (15) is joined to the joint piece (16) and the joint plate (4) fixed to the side surfaces of the pillar (A) and the wall board (C), respectively, with bolts (7) and axial force N. The joint part (6) mounting part of is the eighth
It deforms as shown by the dotted line in the figure to control the axial force from becoming excessive and maintain the transmission of shearing force.

Further, as shown in FIGS. 9 and 10, the shearing force transmitting member is composed of a steel pipe (17), and joint portions (6) projecting from both ends in the diametrical direction of the shearing force transmitting member include a pillar (A) and a wall plate ( C) are joined to the joining piece (16) and the joining plate (4) fixed to the side surfaces of the steel pipe (4) via bolts (7), and the steel pipe () is applied by the axial force N as in the case of the box-shaped steel material (15). The attachment portion of the joint piece (6) in 17) is deformed as shown by the dotted line in FIG. 11 to control the excessive axial force to maintain the transmission of shear force.

FIGS. 12 and 13 show another embodiment of the energy absorbing device, which is a joint piece (12) projecting from a web of a grooved steel material (11) having both side flanges fixed to the lower surface of the beam (B). To
The upper side of the perforated plate (13) is fixed via a bolt, and the lower side of the perforated plate (13) is joined to the joint piece (14) protruding from the wall plate (C) with a bolt, and the groove type The steel material (11), the joint piece (12), the perforated plate (13), and the joint piece (14) constitute an energy absorber.

Therefore, the shearing force Q generated between the upper surface of the wall plate (C) and the upper beam (B) is transmitted between the wall plate (C) and the upper beam (B) via the energy absorbing device.

At this time, the vibration energy of the building is
By the plastic deformation and shearing force of 3), it is consumed as damping energy and the vibration of the building is reduced. Further, the axial force N generated between the upper surface of the wall plate (C) and the upper beam (B) is the same as that described in the embodiment shown in FIG.
The deformation of the flange of the plate is controlled to be excessive, and the transmission of the shearing force by the perforated plate (13) is maintained.

The energy absorbing member may be made of a viscous material, a material using oil, a steel rod, or a material using lead.

(Effect of the invention) As described above, the present invention fixes the upper side or the lower side of the wall plate mounted in the frame composed of columns and beams to the frame,
By attaching the energy absorbing member and the shearing force transmitting member to the other side and joining the wall plate to the frame through each member, vibration of the building is reduced and seismic safety is enhanced.

Further, according to the present invention, the forces of the wall plates, columns, and beams are appropriately distributed without being concentrated on a part, and the deformation of the building is not so large.

According to a second aspect of the present invention, the energy absorbing member is composed of dampers whose both ends are respectively joined to the beam and the wall plate, so that the vibration energy absorbing ability due to the deformation between the wall plate and the frame is improved. To do.

According to a third aspect of the present invention, the shear force transmitting member is composed of a grooved steel material having both side flanges fixed to a frame, a web portion of the steel material is joined to a wall surface side plate, and the wall plate is deformed by the web portion. The axial force acting on the joint between the frame and the frame is controlled to be excessive and the transmission of the shearing force is maintained.

According to a fourth aspect of the present invention, the shearing force transmitting member is formed of a hollow steel material having a polygonal or circular cross section, and both ends of the steel material are joined to the frame and the side surface of the wall plate, respectively, and both ends of the hollow steel material are joined. Is controlled to prevent the axial force acting on the joint between the wall plate and the frame from becoming excessive, thereby maintaining the transmission of the shearing force.

According to a fifth aspect of the invention, the energy absorbing member is joined to one side of a perforated plate to a joint piece projecting from a web of a grooved steel material having both side flanges fixed to the frame, By constructing the other side by joining it to the joining piece protruding from the wall plate, the shearing force generated between the frame and the wall plate is transmitted through the energy absorbing device, and at this time the vibration of the building is generated. Energy is consumed as damping energy by the plastic deformation and shearing force of the perforated plate, the axial force generated between the wall plate and the frame, the flange of the grooved steel material is deformed,
It controls the excess and preserves the transmission of shear forces by the perforated plate.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a damping wall structure having a shearing force transmitting device and an energy absorbing device according to the present invention, and FIGS. 2 and 3 respectively show a joint between a wall plate and a column. FIG. 4 is an explanatory view showing the action of the shearing force transmitting member, FIG. 5 is a view taken along the line V-V in FIG. 1, FIG. 6 and FIG. A front view and a cross-sectional plan view showing another embodiment of the joint between the wall plate and the column, FIG. 8 is an explanatory view of the action of the shearing force transmitting member, and FIGS. 9 and 10 show the wall plate and the column, respectively. Is a front view and a transverse plan view showing another embodiment of the joint portion of Fig. 11, Fig. 11 is an explanatory view of the action of the shear force transmitting member, and Figs. 12 and 13 show joint portions of the beam and the wall plate, respectively. It is a vertical side view along with a front view. (A) …… Pillar, (B) …… Beam, (C) …… Wall plate, (5) …… Shearing force transmitting member, (10) …… Cylinder type damper, (11) …… Groove type steel material , (13) …… Perforated plate, (15) …… Box steel, (17) …… Steel pipe.

Claims (5)

(57) [Claims] 1. Outer four sides of a wall plate mounted in a frame composed of columns and beams are fixed to the frame at the upper side or the lower side, and an energy absorbing member is attached to the other side, and the side section has a cross section of the column. A vibration damping wall structure having a shearing force transmitting device and an energy absorbing device, wherein a hollow shearing force transmitting member parallel to the above is attached, and a wall plate is joined to the skeleton via the respective members. 2. The energy absorbing member is composed of dampers whose both ends are joined to the frame and the wall plate, respectively.
The damping wall structure having a shearing force transmitting device and an energy absorbing device according to claim 1, further comprising a hollow shearing force transmitting member having a member cross section parallel to the pillar. 3. The shear force transmitting device according to claim 1, wherein the shear force transmitting member is made of a grooved steel material having both side flanges fixed to a frame, and a web of the grooved steel material is joined to a side surface of the wall plate. Damping wall structure with energy absorbing device. 4. The shearing force transmitting member is made of a hollow steel material having a polygonal or circular cross-section whose member cross section is parallel to a column, and opposite ends of the steel material are joined to the side faces of the frame and the wall plate, respectively. A damping wall structure having a shear force transmitting device and an energy absorbing device according to claim 1. 5. The energy absorbing member is configured such that one side of a perforated plate is joined to a joint piece projecting from a web of a grooved steel material having both side flanges fixed to the frame, and the other side of the perforated plate is joined. The damping wall structure having a shear force transmitting device and an energy absorbing device according to claim 1, wherein one side is joined to a joining piece protruding from the wall plate.