JP3783127B2 - Vertical wall and precast vertical wall - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lateral rising wall with Seismic Damper, in particular, it relates to effectively incorporating Seismic Damper with lateral rising wall of Seismic Damper towards vertical wall which is a component of a building.
[0002]
[Prior art]
The seismic safety of buildings has been highlighted due to the recognition that conventional design standards alone are not necessarily perfect for large seismic forces. As a countermeasure, there is a seismic control structure that can greatly reduce seismic forces. It has become a social concern in the spotlight. For this reason, many proposals regarding seismic control structures have been made from various directions, but an effective seismic control structure that is simple, low-cost and has not yet been developed.
[0003]
Up to now, many structures have been proposed with a damping device added to the structural frame of the building, and the damping structure that combines the damping device with a part of the structural material has the effect of interlayer deformation during an earthquake. It is widely adopted because it can be transmitted to the damping device and a building can be constructed with a basic structure as a building.
[0004]
The typical form of incorporating a vibration control device into a part of a structural material is to target walls, braces, and bending columns, but the walls and braces over the span have severe restrictions on building plans. It is difficult to adopt in the design. In addition, bending columns have the merit that it is difficult to hinder the degree of freedom in building planning, but there is a problem that the damping effect is small because only a part of the interlayer displacement becomes the displacement of the damper due to deformation of the beams and bending columns. It was.
In particular, in concrete structures (hereinafter abbreviated as RC structures), energy absorption by the damper is reduced due to the small interlayer displacement, and the cost increase for finishing corresponding to deformation around the damper is large. It was a major obstacle to the seismic control structure.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described problems, and provides a vertical wall in the frame structure composed of column beams, and by incorporating a damping damper therein, an effect of reducing response during an earthquake is provided. It is intended to provide a vertical wall with seismic dampers that can be established.
[0006]
[Means for Solving the Problems]
The vertical wall according to the first aspect of the present invention is a vertical wall provided with a joint gap between a hanging wall integral with the upper floor beam and a waist wall integral with the lower floor beam. A recess formed between the hanging wall and the waist wall by partly punching from the surface, damper mounting hardware provided at the upper and lower ends of the recess, and both sides of the damper mounting hardware are joined together. A pair of seismic dampers, and each of the damping damper and the mounting hardware of the damper is formed with slits extending in the vertical direction in the form of long holes whose individual ends open, and the high strength passed through these long holes. The damping damper and the damper mounting hardware are joined by bolts .
[0007]
The vertical wall according to the second aspect of the present invention is characterized in that, in the first aspect described above, the recess is closed with a base plate .
[0008]
The vertical wall according to a third aspect of the present invention is characterized in that, in the first or second aspect described above, an attachment plate is applied to the long hole of the vibration damping damper and is joined with a high-strength bolt .
[0009]
The vertical wall according to a fourth aspect of the present invention is characterized in that, in any one of the first to third aspects described above, the damping damper is a steel damper made of an extremely low yield point steel panel .
[0010]
The precast upright wall which is the invention according to claim 5 is a precast upright wall in which a joint gap is maintained between the precast hanging wall and the precast waist wall, and a part of the wall is cut out from the outer surface of the wall. A recess formed between the hanging wall and the waist wall, damper mounting hardware provided at the upper and lower ends of the recess, and a pair of vibration control dampers disposed on both sides of the damper mounting hardware and integrally joined to each other Prepared in advance, each of the damping damper and the damper mounting hardware is formed with slits along the vertical direction, and long holes are opened at the ends, and the damping damper and damper are formed by high-strength bolts that pass through these elongated holes. It is characterized in that the mounting hardware is joined.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
A building having a vertical wall with a vibration damper according to the present invention basically has a vertical wall with a joint gap between a hanging wall integral with the upper floor beam and a waist wall integral with the lower floor beam. This is a building equipped with a hollow formed by hollowing out part of the vertical wall, and a damper mounting hardware and damper mounting hardware provided at the upper and lower ends of the depression. Constructed from seismic dampers, there are few plan restrictions in the architectural plan, and construction can be done at low cost and in a short construction period, and at the same time, the seismic safety of the entire building is improved.
Embodiments of the present invention will be described below with reference to the drawings.
[0015]
FIG. 1 is a front view with a part cut away for explaining a state in which a damping damper is incorporated in a vertical wall.
The vertical wall 1 is composed of a hanging wall 3 integral with the upper floor beam 2 and a waist wall 5 integral with the lower floor beam 4, and a sealed joint gap 6 is provided between the two walls to be separated from each other. Therefore, relative movement in the horizontal direction is possible. In the lower end portion 7 of the drooping wall 3 and the upper end portion 8 of the waist wall 5, the respective walls are cut out to form an integrated recess 9, and the vibration damper 10 is installed in the recess 9.
[0016]
The damping damper 10 is coupled to damper mounting hardware 11 and 11 ′ provided on the upper surface of the recess 9 formed in the hanging wall 3 and the bottom surface of the recess 9 formed in the waist wall 5. The wall 3 is concealed by a base plate 13 for finishing the inner wall mounted with screws 12 or the like. The base plate 13 is cut off without being joined to the waist wall 5 and is slidable with respect to each other.
The damper fittings 11 and 11 ′ are anchor reinforcing bars as will be described later, and are firmly installed on the hanging wall 3 and the waist wall 5.
[0017]
2A and 2B are cross-sectional views (a) and (b) and (b), respectively, which are cross-sectional views (b) of FIG.
In the present embodiment, since a hysteresis steel damper made of extremely low yield point steel is adopted as the damping damper 10, the following damping damper will be described as the steel damper 15.
The damper fitting 11 for installing the steel damper 15 is manufactured in an H shape, and reinforcing rib plates 18 are welded to both sides of the web 17. The damper mounting hardware 11 is embedded in the upper surface of the recess 9 formed in the hanging wall 3 up to the surface of the rib plate 18 and fixed with anchor reinforcing bars. Similarly, the damper mounting hardware 11 ′ is also attached to the waist wall 5. It is embedded in the bottom surface of the formed depression 9.
[0018]
The steel damper 15 is integrally formed with attachment portions 16 and 16 ′ at both ends of the extremely low yield point steel 14. The attachment parts 16 and 16 'form an extended part 19 that is wider than the panel part that yields and absorbs energy, and is configured to be surely coupled to the damper attachment hardware 11 and 11'. Also, damper rib plates 20 are welded to both sides of the ultra-low yield point steel 14, and are reinforced so that the ultra-low yield point steel 14 is not deformed out of the plane or twisted.
[0019]
The steel damper 15 generally has a low yield stress and can yield and absorb energy even with a small deformation of 1 mm or less. Therefore, the steel damper 15 can be widely applied to buildings with small interlayer displacement, and is stable without temperature dependency or frequency dependency. History characteristics are obtained.
Even when the steel damper yields, most of the frame remains elastic without yielding, and the seismic response analysis shows that the residual deformation of the beam is sufficiently small compared to the maximum deformation, and it remains in the building after the earthquake. The advantage that the function can be maintained without leaving any harmful residual deformation can be exhibited. In addition, even when the plastic modulus of the steel damper is excessive, or when it is required to replace the steel damper after a fire or earthquake, it is possible to deal with it by replacing only the steel damper.
[0020]
Although the detailed description of the installation of the steel damper 15 will be described later, in the present embodiment, the two steel dampers 15 are arranged so as to be tangled to the web 17 of the damper mounting hardware 11, 11 ′ from both sides. These are connected with high-strength bolts 21. The mounting portions 16 and 16 ′ of the steel damper 15 and the web 17 of the damper mounting hardware 11 and 11 ′ are integrated by forming a two-surface friction joint with the high-strength bolt 21 from the contact plates 22 and 23 applied thereto. ing.
[0021]
The attachment plate 22 is applied to the attachment portions 16 and 16 ′, and the attachment plate 23 is applied to the extended portions 19 on both sides, whereby the attachment portion of the steel damper is firmly fixed by the attachment plate over the entire area. Therefore, it becomes irrelevant to the horizontal movement of the steel damper, and the formation of the shear yield mechanism of the ultra-low yield point steel 14 becomes clear.
[0022]
FIG. 3 is an exploded perspective view for explaining in detail a connecting portion between the steel damper and the damper mounting hardware.
As described above, the steel damper 15 and the damper mounting hardware 11 are joined to each other by attaching the mounting portions 16 and 16 of the steel damper 15 to both sides of the web 17 of the damper mounting hardware 11, and the splicing plate 22 from above. , 23 and are fastened in a two-surface friction bonded state with a high-strength bolt 21.
At this time, the hole through which the high-strength bolt 21 is passed is a slit-like long hole 24 formed in a comb-teeth shape on the web 17 of the damper attachment 11 as shown in the figure, and is also formed in the attachment portion 16 in the same comb-teeth shape. It is the slit-shaped long hole 25 which was made.
[0023]
With these long holes 24, 25, the steel material damper 15 and the damper mounting hardware 11 can be moved and adjusted in the vertical direction with the high-strength bolt 21 interposed therebetween. Therefore, when the steel damper 15 is set or replaced, the steel damper 15 is lifted upward so that the damper 17 can be easily attached and detached over the web 17 of the damper mounting hardware 11 ′ embedded in the bottom surface of the recess 9. Can do.
In addition, the two-surface frictional joint constituted by the high strength bolt 21 between the steel damper 15 and the damper mounting hardware 11 is made to function with respect to the force in the horizontal direction and integrated with the accessory plate with the high strength bolt. Therefore, the long hole formed as a bolt hole in a slit shape in the vertical direction does not cause any problems functionally.
[0024]
Next, the work of removing the steel damper will be described with reference to FIG.
The removal of the steel damper 15 is performed by first removing the base plate for finishing the inner wall that conceals the steel damper 15 and loosening the high-strength bolt 21. Next, as shown in FIG. 4A, by removing the nuts and the holding plates 22 and 23 from the high-strength bolt 21, one steel damper 15 on the front surface can be easily removed.
At this stage, the long hole 24 formed in the web 17 of the damper mounting hardware 11 leaves a predetermined gap between the high-strength bolt 21 and the upper end of the slit, and similarly, in the mounting portion 16 of the steel damper 15. The formed long hole 25 also leaves a predetermined gap between the high-strength bolt 21 and the lower end of the slit.
[0025]
The gap formed by the slits formed in the long holes 24 and 25 is, as shown in FIG. 4B, in relation to the high-strength bolt, when the steel damper 15 is lifted upward until both the gaps become zero. 15 is set so that the lower mounting portion 16 'can get over the web 17 of the damper mounting hardware 11'.
As a result, the steel damper 15 installed in the back of the recess 9 in the vertical wall can be easily removed and removed while remaining integrated with the supporting plates 22 and 23.
Therefore, when the steel damper has an excessively high plasticity rate, or when it is required to replace the steel damper after a fire or earthquake, it is possible to simply deal with the replacement of the steel damper alone, which greatly increases the maintenance of the building. Will contribute.
[0026]
Furthermore, the steel damper can be replaced easily in a small space, and at the same time, the replacement is only to remove the bolt joint that does not require welding. The workability can be improved.
[0027]
In the above embodiment, the case where a steel damper is adopted as the vibration damper is described. However, the present invention is not limited to this, and viscoelasticity is shown in a schematic sectional view in FIG. Of course, other seismic dampers such as the viscoelastic damper 30 using the material 31 can be employed.
That is, as in the case of the steel damper 15, the viscoelastic damper 30 is installed in a recess 9 formed integrally with the end of the drooping wall 3 and the waist wall 5, and the recess 9 is a drooping wall. 3 can be easily applied by being concealed by the base plate 13 for finishing the inner wall mounted with screws 12.
In this way, by combining the damping state formed in the vertical wall and the damper mounting hardware as in the present invention, the various damping dampers other than those described above can also be used for each damping damper. It is clear that it is possible to construct a building that can efficiently exhibit the characteristics of
[0028]
As described above, the building having the vertical wall with the damping damper according to the present invention is configured by the arrangement of only the vertical wall with a small width of detection, and the passage opening and equipment required for the architectural plan Since it is possible to secure a duct space and the like necessary for the plan, restrictions on the plan of the building can be greatly reduced. In addition, when a hysteretic steel damper made of extremely low yield point steel is used as the damping damper, the seismic force is reduced because the hysteresis absorbed energy due to the yield of the ultra low yield point steel is large even if the interlayer displacement is small. As a result, seismic safety is improved and acceleration during an earthquake is reduced, so that damage to fixtures, fixtures, and equipment in the building can be prevented.
[0029]
In the said embodiment, installation of the damping damper was demonstrated as what is performed with the normal construction method in a building. However, the building with the vertical wall with the vibration control damper according to the present invention is characterized in that the vibration control damper is housed and installed in the vertical wall. It has become.
Below, embodiment is described based on drawing about the construction method.
[0030]
FIG. 6 shows a method of constructing a vertical wall with a vibration control damper according to the present invention in a PC by constructing it into a PC.
FIG. 6A is a perspective view showing a PC vertical wall with a vibration damper according to the present invention.
The PC vertical wall 40 with a damping damper is manufactured in advance in a factory. First, a drooping wall 43 and a waist wall 45 having a predetermined shape are manufactured by placing concrete with appropriate reinforcement and a formwork. Yes. The hanging wall 43 and the waist wall 45 are formed with a notch for a recess 49 formed integrally while holding the joint gap 46, and a damper mounting hardware for connecting the steel damper 15 to the side of the notch is provided. Buried. At this time, whether or not the wall bars 42 are installed on the hanging wall 43 in advance can be appropriately selected according to the situation.
The PC vertical wall 40 with the damping damper is integrally formed by connecting the steel damper 15 to the damper mounting hardware on both walls while holding the joint gap 46 between the hanging wall 43 and the waist wall 45. It is assembled.
[0031]
FIG.6 (b) has shown the construction state which attaches the PC vertical wall with a damping damper to the beam of an upper-lower floor in a field.
The PC vertical wall 40 with a vibration damper provided in the construction site is arranged at a position defined between the beams 2 and 4 on the upper and lower floors. Next, the upper beam 2 and the hanging wall 43 are integrated by anchoring the wall bars 42 in the beam, and the lower beam 4 and the waist wall 45 are connected to the main body structure by the sleeve joint 47 grouted later. It is built in one piece. Thus, a state in which the damping damper 15 is installed between the upper and lower floor beams is configured.
After that, the joint clearance 46 is subjected to a predetermined sealing process, and the PC vertical wall 40 with the vibration damper is attached to the PC vertical wall with the steel damper by applying an interior / exterior finish considering movement at the joint. To complete.
[0032]
FIG. 7 shows a method for constructing a vertical wall with a damping damper according to the present invention in an existing building.
In this embodiment, first, as shown in FIG. 7 (a), chemical anchors 52 are provided at predetermined positions of the existing beams 2 and 4 on the upper and lower floors, and a newly provided vertical wall (hanging wall, waist wall) An anchor reinforcing bar 53 is arranged at a predetermined position.
Next, as shown in FIG. 7 (b), the wall bars 54 are arranged, and the steel damper 15 and the damper fittings 11 and 11 'are installed at predetermined positions. At this time, the steel damper 15 and the damper mounting hardware 11, 11 ′ are installed in a state in which they are integrally coupled with the high-strength bolt 21 in advance.
After defining the shape of the drooping wall and the waist wall with the mold, the desired vertical wall 50 is configured by placing concrete, but the subsequent joint treatment and interior / exterior finishing construction are performed as described above. It is the same as the form.
[0033]
In the above embodiment, the case where the drooping wall and the waist wall are constructed by the same construction method has been described. However, one of the drooping wall and the waist wall is made into a PC, and the other wall is cast in the field. It can also be concrete. In this case, when newly installing a vertical wall with a damping damper in the existing building shown in FIG. 7, it is effective to use a waist wall as a PC and a hanging wall as a cast-in-place concrete.
[0034]
As described above, the present invention has been described in detail on the basis of the embodiment. However, a building having a vertical wall with a vibration damper according to the present invention basically includes a hanging wall and a lower floor beam integrated with the upper floor beam. Is a building with a vertical wall with a joint gap between the wall and the dent wall, and a hollow formed by punching a part of the wall between the drooping wall and the waist wall, and above and below the dent. It is characterized by being composed of damper mounting hardware installed at the end and vibration control dampers installed on the damper mounting hardware, which makes it possible to construct at low cost and short construction period with less plan restrictions on the architectural plan Since it is intended to improve the seismic safety of the entire building, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention including specific examples. It is natural that it is possible .
[0035]
【The invention's effect】
The present invention relates to a building having a vertical wall provided with a joint gap between a hanging wall integral with the upper floor beam and a waist wall integral with the lower floor beam, and a part of the wall is dripped through the wall. It is composed of a recess formed between the wall and the waist wall, damper mounting hardware provided at the upper and lower ends of the recess, and a damping damper installed on the damper mounting hardware. is doing.
(1) Because the damping damper is installed on the vertical wall with a small width of detection, it is possible to secure the passage opening necessary for the architectural plan and the duct space necessary for the equipment plan, so there are few plan restrictions on the architectural plan. .
(2) Since the damping damper is installed on the vertical wall that does not bear the axial force, the installation and replacement of the damping damper does not place a burden on the residents, and the repair work is reduced and the construction period is reduced. It can be shortened and installed.
(3) Since it is only necessary to install a vertical wall, it can be constructed at a low cost and in a short construction period, and at the same time it can improve the seismic safety of the entire building.
[0036]
Moreover, since this invention is characterized by closing a hollow with a baseplate, in addition to the said effect, the effect which makes the interior finishing of a building easy is exhibited.
[0037]
Further, the present invention is characterized in that the damping damper is arranged on both sides of the damper mounting hardware and integrally joined thereto. In addition to the above effects, a plurality of damping dampers are found and the vertical wall having a small width is found. The effect that it can arrange efficiently in the inside is demonstrated.
[0038]
Further, the present invention is characterized in that the bolt hole provided in the damping damper and the damper mounting hardware is a slit-like long hole. In addition to the above effect, the damping damper is inserted into the recess of the wall. All installation and removal work from the dent can be done easily by operating only the bolts in a narrow space without using welding, so there is no need to consider fire and the effect of improving construction efficiency can be achieved. ing.
[0039]
In addition, the present invention is characterized in that an attachment plate is applied to the bolt hole of the damping damper and is joined with a high-strength bolt. In addition to the above effects, a shear yield mechanism of the damping damper is clearly formed. In addition, the effect of reliably restraining the out-of-plane deformation of the damping damper is demonstrated.
[0040]
In addition, the present invention is characterized in that the damping damper is a steel damper made of an extremely low yield point steel panel. In addition to the above-described effects, the following effective effects can be exhibited, and it can be manufactured at a lower cost. At the same time, it has the effect of being able to function effectively even for SRC and RC buildings with small interlayer displacement.
(1) The low-yield point steel panel yields a large amount of absorbed energy and reduces the seismic force and acceleration acting on the building, improving seismic safety and damaging fixtures and equipment in the building. Can be prevented.
(2) The cross section of the structural member becomes small, and the cost of the structural section can be reduced.
(3) There is no temperature dependency or frequency dependency, and stable history characteristics can be obtained.
(4) Since the yield stress of steel panels with extremely low yield points is small, most of the frames retain elasticity, and the function can be maintained without leaving any harmful residual deformation in the building after the earthquake.
(5) Even if it is necessary to replace the damping damper, it can be dealt with by replacing only the steel damper.
[0041]
In addition, the present invention is a PC vertical wall that holds a joint gap between the PC drooping wall and the PC waist wall, and a part of the drooping wall and the waist wall is cut out to form an integral depression. Since it is characterized by pre-installing damping dampers on the damper mounting hardware provided at the upper and lower ends, manufacturing at the factory reduces site work, shortens the work period, and improves construction efficiency and accuracy. The effect which can aim at improvement is demonstrated.
[Brief description of the drawings]
FIG. 1 is a front view in which a part of a vertical wall with a damping damper according to the present invention is cut away. FIG. 2 is a sectional view taken along arrows (a)-(a) and (b)-(b) in FIG. FIG. 3 is a perspective view in which the coupling between the steel damper and the damper mounting hardware is disassembled. FIG. 4 is a process diagram for removing the steel damper from the vertical wall. FIG. 5 is a sectional view showing another embodiment of the vibration damper. [Fig. 6] PC vertical wall with seismic damper and installation drawing using it [Fig. 7] Installation plan of vertical wall with seismic damper for existing building [Explanation of symbols]
1 Vertical wall with seismic damper, 2 Upper floor beam, 3 Hanging wall, 4 Lower floor beam,
5 waist wall, 6 joint gap, 7 lower end of drooping wall, 8 upper end of waist wall,
9 depression, 10 damping damper, 11, 11 'damper mounting hardware,
12 screws, 13 base plate, 15 steel damper, 16 mounting part,
17 web, 18 rib plate, 19 extension,
20 damper rib plate, 21 high-strength bolts, 22, 23 support plate,
24, 25 slit-like long holes,
30 viscoelastic damper, 31 viscoelastic body,
40 PC vertical wall with seismic damper, 42 wall reinforcement, 43 hanging wall,
45 waist wall, 46 joint gap, 47 sleeve joint,
49 Dimple,
50 PC vertical wall with vibration control damper, 52 chemical anchor,
53 anchor reinforcement, 54 wall reinforcement,

Claims (5)

A vertical wall with a joint gap between the hanging wall integral with the upper floor beam and the waist wall integral with the lower floor beam,
Depression and formed between the wall dripping pulled hollowed part spandrel from the outer surface of the wall,
A damper mounting hardware provided on the depressions Mino upper and lower ends,
A pair of damping dampers disposed on both sides of the damper mounting hardware and joined together;
Each of the vibration damper and the damper mounting hardware is formed in a slit shape along the vertical direction to form a long hole whose individual ends open, and the vibration damper and damper are formed by high-strength bolts that pass through these long holes. A vertical wall characterized by joining mounting hardware . The wall according to claim 1, wherein the recess is closed with a base plate. The vertical wall according to claim 1 or 2, wherein an attachment plate is applied to the long hole of the vibration control damper and is joined with a high-strength bolt . The vertical wall according to any one of claims 1 to 3, wherein the damping damper is a steel damper made of an extremely low yield point steel panel . A precast vertical wall that maintains a joint gap between the precast hanging wall and the precast waist wall,
A depression formed between the drooping wall and the waist wall by punching a part from the outer surface of the wall;
Damper mounting hardware provided at the upper and lower ends of the recess;
A pair of damping dampers disposed on both sides of the damper mounting hardware and joined together;
Are formed in a slit shape along the vertical direction in each of the vibration damping damper and the damper mounting hardware, and long holes that open individual ends are formed, and the vibration damping damper and the damper are formed by high-strength bolts that pass through these long holes. Precast standing wall characterized by joining damper mounting hardware .

Images