JP2010255302A - Viscous seismic response control wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To contribute to achievement of a seismic response control structure building of higher performance by stabilizing and reinforcing the damping performance of a viscous seismic response control wall used for seismic response control structurization of a superhigh-rise building or the like and enhancing the cost performance of an apparatus. <P>SOLUTION: A wall member for connecting an upper floor to a lower floor of a building or another structure is provided with holes 34 at both ends of a rising wall (an external wall steel plate) 31 of the viscous seismic response control wall, and a horizontal communicating pipeline 35 filled with a viscous fluid 5 is provided on the outside. In addition, a friction damper function utilizing a hanging wall (an internal wall steel plate) and the rising wall (the external wall steel plate) is added to stabilize a viscous resistance mechanism, to increase a resistance force and to reduce a resistance force fluctuation ratio depending on temperature. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention improves the seismic safety of the structure by increasing the vibration energy absorption capacity of the structure to provide a structure with high damping performance, as well as a structure generated by wind, traffic vibration, and other dynamic external forces. The present invention relates to a damping / vibration control structure that can effectively suppress vibration of an object and a damping device that realizes a seismic isolation structure, particularly “viscous damping wall”.

  Energy is applied to structures to improve the seismic safety of various structures such as buildings, workpieces and tower structures, and to improve living performance by suppressing vibrations of structures caused by wind and other dynamic external forces. A method of improving the damping performance of a structure by attaching an absorbing device (hereinafter also referred to as “attenuating device”) has been developed and put into practical use. Typical damping devices for building structures that have been put to practical use so far are metal hysteresis dampers that use plastic deformation of steel and lead, viscoelastic dampers that use high damping rubber and viscoelastic materials, and oil dampers. There are also viscous dampers such as a viscous damping wall “viscous damping wall” in which a viscous fluid is sealed inside a wall-shaped box.

  From the viewpoint of suppressing the response of the structure, a viscous damper that exhibits a resistance force proportional to the speed is the best. Among viscous dampers, cylinder-shaped oil dampers have the advantage of low temperature dependence, but they generate high internal pressure during operation, and there is a risk of leakage of internal fluids. ) I'm worried about performance.

  Among the viscous dampers, the wall-shaped viscous damping wall is composed of an extremely simple mechanism, and does not generate high internal pressure like oil dampers, so it is maintenance-free, has excellent long-term durability, and has high operational reliability. Since it can give high viscous damping performance to structures, the number of adoption cases has been increasing mainly in high-rise buildings since the Great Hanshin Earthquake. The viscous damping walls are also used as damping devices for seismic isolation structures.

  The viscous damping wall was invented in Japanese Patent No. 1577568 (see Patent Document 1), and after development and practical use, the following partial improvements (see Patent Documents 2 to 5) and the like have been made to date.

Japanese Patent Publication No.2-1947 Japanese Patent Laid-Open No. 11-071935 JP 2000-220318 A JP 2001-132265 A JP 2007-009452 A

  The known prior art has the following problems to be solved.

  The first issue of viscous damping walls is related to the stabilization of the mechanical properties of viscous damping walls. The viscous damping wall is based on the shear resistance of viscous fluid, and the inner wall steel plate moves horizontally within the viscous fluid storage tank composed of the outer wall steel plate. At this time, since the front surface of the inner wall steel plate pushes away the viscous fluid, the viscous fluid rises to the upper part of the reservoir and the resistance force increases. On the other hand, the viscous fluid tries to fill the gap created by the movement of the inner wall steel plate on the rear surface of the inner wall steel plate, but because the viscosity is high, the flow of the viscous fluid does not catch up and a large depression is formed, and then the inner wall steel plate returns. Since the effective area is sometimes reduced due to the lack of viscous fluid, the resistance is reduced, and sometimes air bubbles are entrained, and the inner wall steel plate may crush this, resulting in a large bursting sound. There is a problem to improve the stability of the resistance force when the vibration is repeated.

  The second problem is also a problem of mechanical characteristics, but the magnitude of the viscous resistance depends on the viscosity of the viscous fluid. Since the viscosity of any viscous fluid varies depending on the temperature, the resistance force generated by the viscous damping wall must be affected by the temperature. This is called temperature dependence, but if the temperature of the viscous damping wall is high, the viscosity of the fluid decreases and the resistance decreases, and conversely, the viscosity increases and the resistance increases in winter when the temperature is low. It has the property of In other words, in order to stabilize the resistance of the viscous damping wall against environmental conditions, “Resolve temperature dependence” or “Relieve resistance fluctuation due to temperature change”, especially “Reduction of resistance at high temperature” Realization of a “method for preventing the occurrence” is desired.

  The third issue is “economy”. One of the advantages of the viscous damping wall is that the magnitude of the resistance force can be adjusted fairly freely by the gap between the steel plates, the viscosity of the viscous fluid, and the area of the resistance plate wall plate. However, since the adjustment of the gap and the viscosity of the viscous fluid is quite precise and delicate, it is the area of the wall plate that is most easily adjusted for performance. That is, in order to obtain a large resistance, a large area is required. For that purpose, a large wall body can be manufactured or a wall plate can be made into a double and triple structure. Must be high. In order to widely disseminate this excellent damping device, it is required that a viscous damping wall having a large resistance can be supplied at low cost.

  The fourth problem is a problem caused by the combination of the first problem and the third problem. In other words, as a measure to solve the economic problem of the third problem, if the gap between the steel plates of the viscous damping wall is narrowed, the resistance can be increased, but if the gap is narrowed, the amount of viscous fluid in that part is slightly reduced. Therefore, as the inner wall steel plate moves, the range (area) affected by the viscous fluid that is pushed back and forth is increased, and the effect of performance fluctuations becomes greater. The problem becomes noticeable.

  The present invention has been made to solve the above-described problems, and further improves the performance of the viscous damping wall, which is an excellent damping device for a structure, and improves the cost to a low-cost device. The purpose of this study is to provide a viscous damping wall that can be easily adopted and contribute to the spread of building structures with high damping performance and high seismic safety.

The following configurations are means for solving the above-described problems.
<Configuration 1>
It is a wall member that connects the upper and lower floors of buildings and other structures. A plurality of wall boards fixed to the floor slabs or beams of the lower floor are raised in parallel, and the edges of the wall boards are closed. A box-shaped wall is formed, and one or more hanging wall plates fixed to the floor slab or beam on the upper floor are inserted into the box-shaped wall body, and a viscous fluid is inserted into the gap between the rising wall plate and the hanging wall plate. In the viscous damping wall filled with, a hole is formed in the vicinity of the end faces of the rising walls constituting both outer wall surfaces, and a horizontal communication pipe that connects the holes to the outside of the outer wall surface is provided, Viscous damping wall characterized in that the inside is also filled with viscous fluid.

<Configuration 2>
The viscous damping wall according to Configuration 1, wherein the horizontal communication pipe line outside the outer wall surface is provided in two or more stages in the vertical direction.

<Configuration 3>
In the viscous damping wall according to Configuration 1 or 2, a viscous fluid liquid reservoir portion of a horizontal communication pipe is provided outside the uppermost end of the rising outer wall surface, and an upper surface cover is disposed on the upper portion so as to cover the inner hanging wall. And a gap between the upper surface lid and the inner hanging wall is sealed with an elastic body such as a rubber packing so as to seal the viscous damping wall.

<Configuration 4>
4. The viscous damping wall according to any one of configurations 1 to 3, wherein an inspection hole for confirming an internal viscous fluid is provided on an upper surface of the horizontal communication pipe.

<Configuration 5>
In the viscous damping wall according to any one of the first to fourth aspects, the vertical shape of the end face of the drooping wall is set to the innermost side at the hole portions at both ends of the rising wall, and at the intermediate height position of the hole. A viscous damping wall characterized by being inclined so as to be on the outermost side, or by cutting the vicinity of the height of the hole position of the outer wall into a concave shape at the end of the hanging wall.

<Configuration 6>
A wall member that connects the upper and lower floors of buildings and other structures, and the walls of the floor slabs on the lower floor or a plurality of wall plates fixed to beams or connecting members on the beams are raised in parallel. A box-shaped wall is formed by closing the plate end, and one or more hanging wall plates fixed to the floor slab or beam or connecting member on the upper floor are inserted into the box-shaped wall, and the rising wall plate In the viscous damping wall in which a viscous fluid is filled in the gap between the wall plate and the hanging wall plate, the width of the central wall (thickness) of the box-shaped wall body is larger at both ends of the rising wall constituting both outer wall surfaces. A viscous damping wall characterized by having a vertical liquid reservoir for viscous fluid.

<Configuration 7>
In the viscous damping wall according to Configuration 6, a plurality of holes are provided in the vertical direction near both end portions of the outer wall surface, and L-shaped members are arranged on both outer sides to configure the liquid pool portion having the vertical shape. A viscous damping wall characterized by

<Configuration 8>
In the viscous damping wall according to Configuration 6, a plurality of holes or slits are provided in a vertical direction in the end face steel plate of the rising box-like wall body, and a C-shaped member is disposed outside the end face steel plate. A viscous damping wall characterized in that it constitutes the liquid pool part of the vertical shape.

<Configuration 9>
The viscous damping wall according to Configuration 6, wherein square steel pipes are vertically arranged at both ends of the rising outer wall surface to constitute the liquid pool portion having the vertical shape. .

<Configuration 10>
The viscous damping wall according to Configuration 6, wherein a circular steel pipe is vertically arranged at both ends of the rising outer wall surface to constitute the liquid pool portion having the vertical shape. .

<Configuration 11>
In the viscous damping wall according to any one of Configurations 6 to 10, the horizontal horizontal communication pipes are attached to both outer side surfaces of the rising outer wall surface, and both end portions thereof are arranged at both end portions of the rising outer wall surface. Viscous vibration control wall characterized by being connected to a vertical liquid pool.

<Configuration 12>
It is a wall member that connects the upper and lower floors of buildings and other structures. A plurality of wall boards fixed to the floor slabs or beams of the lower floor are raised in parallel, and the edges of the wall boards are closed. A box-shaped wall is formed, and one or more hanging wall plates fixed to the floor slab or beam on the upper floor are inserted into the box-shaped wall body, and a viscous fluid is inserted into the gap between the rising wall plate and the hanging wall plate. In the viscous damping wall filled with a high-strength bolt that makes a part of the rising wall plate contact the hanging wall without a gap and penetrates both wall plates of the contact portion, the high-strength bolt A viscous damping wall characterized in that an axial force is introduced and a frictional force is generated between the wall plates in contact with each other by relative displacement between the upper floor and the lower floor of the building.

<Configuration 13>
13. The viscous damping wall according to Configuration 12, wherein a frictional peristaltic member is incorporated in a part of the rising wall or the hanging wall in the contact portion.

<Configuration 14>
It is a wall member that connects the upper and lower floors of buildings and other structures. A plurality of wall boards fixed to the floor slabs or beams of the lower floor are raised in parallel, and the edges of the wall boards are closed. A box-shaped wall is formed, and one or more hanging wall plates fixed to the floor slab or beam on the upper floor are inserted into the box-shaped wall body, and a viscous fluid is inserted into the gap between the rising wall plate and the hanging wall plate. In the viscous damping wall filled with a horizontal plate, a horizontal plate is attached near the upper part of the hanging wall, and a horizontal plate that is in contact with the horizontal plate and is once fixed to the rising wall is provided. A high-strength bolt that penetrates the plate is arranged, axial force is introduced to the high-strength bolt, and friction force is applied between the horizontal plates that are in contact by relative displacement between the upper floor and the lower floor of the building. Viscous damping wall characterized by generating.

<Configuration 15>
It is a wall member that connects the upper and lower floors of buildings and other structures. A plurality of wall boards fixed to the floor slabs or beams of the lower floor are raised in parallel, and the edges of the wall boards are closed. A box-shaped wall is formed, and one or more hanging wall plates fixed to the floor slab or beam on the upper floor are inserted into the box-shaped wall body, and a viscous fluid is inserted into the gap between the rising wall plate and the hanging wall plate. In the viscous damping wall filled with, two or more friction plates facing and contacting each other are arranged outside the upper end of the rising wall, and high strength bolts are arranged inside or near the outside of the plane. Axial force is introduced, one of the friction plates is fixed to the upper floor beam or a joint member integrated with the beam, and the other friction plate is fixed near the upper part of the rising wall of the viscous damping wall. Viscous damping wall characterized by compounding friction damper.

<Configuration 16>
The viscous damping wall according to Configuration 15, wherein the friction damper includes a rotation center axis fixed to a rising wall side of the viscous damping wall and a rotating friction plate that can rotate about the center axis, One end of the rotating friction plate is connected to the upper floor beam side, the other is brought into contact with the friction flat plate fixed to the viscous damping wall, and high friction bolts are arranged near both friction surfaces to tighten both friction plates. And a friction damper that can arbitrarily set a distance L1 between the rotation center axis and the connection point on the upper floor side and a distance L2 between the rotation center axis and the center of the friction surface. Characteristic viscous damping wall.

<Configuration 17>
The viscous damping wall according to any one of Structures 1 to 16, wherein there are two or more walls hanging from the upper floor and three or more rising walls from the lower floor.

  In the present invention, the flow of the viscous fluid accompanying the movement of the inner wall steel plate of the viscous damping wall is stabilized, and it has become possible to provide a stable viscous damping resistance and energy absorption performance even when a large amplitude vibration is caused.

  In addition, the present invention greatly reduces the phenomenon that viscous fluid swells on the front side where the inner wall moves at the end of the viscous damping wall and the hollow of the viscous fluid on the rear side as the inner wall steel plate moves. To do.

  For example, in the case of a conventional viscous damping wall, the gap between the inner wall steel plate and the outer wall steel plate is 2 mm, the thickness of the inner wall steel plate in the viscous fluid is 16 mm, and the height is 2 m. When it moves, the viscous fluid that the inner wall steel plate tends to push becomes 1.6 cm × 200 cm × 5 cm = 1600 cc. Since the inner distance between the outer wall steel plates of the end liquid reservoir of the conventional viscous damping wall is 16 + 2 × 2 = 20 mm, the length of the reservoirs at both ends of the viscous damping wall is 10 cm (the remaining length after moving the inner wall steel plate) 5cm), the viscous fluid swells up to 1600 / (2 × 5) = 160cm on the front surface of the inner wall steel plate, or the liquid level decreases on the rear surface. The viscous fluid overflows, the effective area decreases, air Entrainment occurs.

  On the other hand, in the configurations 6 to 11 of the present invention, when the vertical liquid pool portions having a width of 15 cm and a length of 15 cm are provided at both ends of the viscous damping wall, the fluctuation of the liquid level of the viscous fluid is 1600 / ( 13.4 × 5 + 15 × 10) = 7.4 cm, which is suppressed to 1/20 or less of the conventional type. Such a liquid level fluctuation height can be sufficiently absorbed by the liquid pool provided at the upper end of the viscous damping wall, and can prevent the effective area from being reduced due to overflow or liquid level drop. Therefore, the phenomenon of air entrainment can be avoided.

  Furthermore, in the methods according to the first to fifth aspects of the present invention, the liquid level is stabilized to such an extent that the upper part of the liquid level hardly fluctuates because the viscous fluid pushed out by the inner wall wraps around the rear side of the inner wall through the horizontal communication pipe. Will be.

  In addition, by combining with frictional resistance as the third solution, the rate of performance fluctuation due to temperature change is reduced, and the resistance itself of the device is also powered up and evolved into a powerful device. Compared to, cost performance is dramatically improved.

  In recent years, it has been pointed out that the safety of skyscrapers against long-period ground motion due to M8 class oceanic giant earthquakes, but the viscous damping walls according to the present invention are repeated many times in the long duration characteristic of giant earthquakes. Since stable damping performance against vibration can be provided, it can be said that the reliability and safety of the damping device and the high-damping damping structure have been greatly increased.

  In recent years, viscous damping walls have been used as damping devices for base-isolated structures, but large vibration amplitudes are required for base-isolated structures. The viscous damping wall of the present invention can provide stable viscous damping performance against large-amplitude vibrations, and thus exhibits an effect as an excellent damping device that has never been seen in a seismic isolation structure.

It is a figure which shows the basic composition and arrangement | positioning point of the viscous damping wall which this invention makes object, (1) Elevated view of a viscous damping wall, (2) Side view of a viscous damping wall. BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram which shows Example 1 and Example 2 of this invention, (1) Elevated view of the viscous damping wall of this invention, (2) Longitudinal sectional view of the viscous damping wall of this invention, (3) It is a wife face elevation of the viscous damping wall of the present invention. It is the figure which compared and showed the conventional damping wall and the structure 1 of this invention, (1) Horizontal sectional drawing of the horizontal cross section of a conventional damping wall, (2) Standing wall (outer wall steel plate) of the structure 1 of this invention It is a horizontal sectional view of a hole and a horizontal communication pipe line provided in. It is a block diagram which shows Example 3 and Example 4 of this invention, (1) Elevated view of Example 3 and Example 4 of this invention, (2) Longitudinal section of Example 3 and Example 4 of this invention (3) Upper view: partially enlarged view of Embodiment 3 of the present invention, (3) Lower view: partially enlarged view of Embodiment 4 of the present invention. It is a longitudinal cross-sectional view which shows Example 5 (Structure 5 and Structure 12) of this invention, (1) The partial expanded longitudinal cross-sectional view which shows Example 5 (Structure 5) of this invention, (2) Example 5 of this invention It is a partial expanded longitudinal cross-sectional view which shows (when the structure 12 is combined with the structure 5). The whole block diagram of Example 6 thru | or Example 11 of this invention is shown, (1) Elevated view of the viscous damping wall of this invention, (2) Longitudinal sectional view of the viscous damping wall of this invention, (3) It is a wife face elevation of the viscous damping wall of the present invention. It is a figure which shows the conventional damping wall and Example 7 (configuration 7) and Example 8 (configuration 8) of the present invention. (1) Horizontal sectional view of the conventional damping wall, (2) Example 7 of the present invention ( FIG. 7 is a horizontal sectional view of Configuration 7), and (3) a horizontal sectional view of a horizontal sectional view of Embodiment 8 (Configuration 8) of the present invention. It is a block diagram which shows Example 9 (Structure 9) thru | or Example 11 (Structure 10) of this invention, (1) Horizontal sectional drawing of Example 9 (Structure 9) of this invention, (2) Example of this invention 10 (Configuration 9) is a horizontal sectional view, and (3) is a horizontal sectional view of a horizontal sectional view of Example 11 (Configuration 10) of the present invention. Example 12 (Configuration 11) of the present invention is shown: (1) Elevated view of the viscous damping wall of the present invention, (2) Vertical sectional view of the viscous damping wall of the present invention, (3) Viscosity of the present invention It is an enlarged view of the horizontal sectional view of a damping wall. It is a block diagram which shows Example 13 (Structure 12 and Structure 13) of this invention, (1) Elevated view of Example 13 (Structure 12 and Structure 13) of this invention, (2) Example 13 of this invention ( (3) Upper view: partially enlarged view of the upper cross section of Example 13 (Configuration 12) of the present invention, (3) Middle diagram: Example 13 of the present invention (Configuration 13) ) Is a partial enlarged view of the upper cross-section of FIG. 3, (3) Lower view: It is a partial enlarged cross-sectional view of the upper end of Example 13 of the present invention. It is a block diagram which shows Example 14 (Structure 14) of this invention, (1) Elevated view of Example 14 of this invention, (2) It is a longitudinal cross-sectional view of Example 14 of this invention. It is an elevation view which shows the whole structure of Example 15 (Structure 15) of this invention. It is a block diagram which shows the structure of the friction damper of Example 15 (Structure 15) of this invention, (1) The partial elevation view of the friction damper of Example 15 (Structure 15) of this invention, (2) Implementation of this invention It is a fragmentary sectional view of the friction damper of Example 15 (configuration 15). It is a figure which shows the structure of the rotary friction damper of Example 16 (Structure 16) of this invention, (1) The block diagram of the rotary friction damper of Example 16 (Structure 16) of this invention, (2) It is a block diagram (when L1 <L2) of the rotary friction damper of Example 16 (Configuration 16).

  FIG. 1 is a diagram showing the basic configuration and arrangement of a viscous damping wall targeted by the present invention. (1) is an elevation view of the viscous damping wall, and (2) is a side view of the viscous damping wall. .

  The viscous damping wall is a wall member that connects the upper and lower floors of buildings and other structures. As shown in FIG. 1, the upper and lower floors of the building frame composed of columns 1 and beams 21 and 22 are used. It is attached to the floor slab 20 or the beams 21 and 22 directly or via the joining member 23. A wall plate (outer wall steel plate) 31 is raised in parallel on the floor slab 20 or the beam 22 or the attachment member 23 on the lower floor, and a box (box-like wall body) is formed by closing the end of the wall plate. The inner wall steel plate (hanging wall plate) 4 fixed to the floor slab 20 or the beam 21 on the upper floor is suspended therein, and the gap 5 between the rising wall plate 31 and the hanging wall plate 4 is filled with the viscous fluid 5. .

  The present invention is directed to this viscous damping wall, and an embodiment of the present invention will be described below with reference to the drawings showing examples.

  FIGS. 2 and 3 (2) show configurations 1 and 2, in which FIG. 2 (1) is the overall elevation shape of the viscous damping wall of the present invention, and FIG. 2 (2) is a longitudinal sectional view. 2 (3) is a wife face elevation, and FIG. 3 (2) is a horizontal sectional view showing a hole 34 and a horizontal communication pipe 35 provided in a rising wall (outer wall steel plate) of Configuration 1 of the present invention.

  As shown in FIG. 2 (1), holes 34 are formed in the vicinity of the end faces of the both ends of the outer rising wall 31, and horizontal communication pipes 35 that connect the holes 34 at both ends are provided. 5 is filled. A horizontal cross section having a height with the hole 34 is shown in FIG.

  Since the conventional cross section of the viscous damping wall has a configuration in which the inner wall steel plate 4 is simply inserted into the box of the outer wall steel plate 31 as shown in FIG. Since there is no escape space for the viscous fluid 52 pushed on the side, it rises in the upper liquid pool part, and on the opposite side, a gap corresponding to the disappearance of the inner wall steel plate is formed. When 4 comes back, the effective area 51 of the viscous fluid decreases or an abnormal phenomenon such as entrainment of air bubbles occurs.

  In the present invention, as shown in FIG. 3 (2), holes 34 are provided at both ends of the outer wall steel plate 31, and a horizontal communication pipe 35 is disposed outside the holes 34. Accordingly, the viscous fluid 52 pushed by the movement of the inner wall steel plate 4 enters the horizontal communication pipe 35 through the hole 34, and the viscous fluid 54 inside thereof passes around the rear side of the inner wall steel plate 4 through the rear hole 34. Therefore, it is possible to stably exhibit a certain resistance force due to the shear laminar flow of the viscous fluid 51 on the side surface of the inner wall steel plate without causing the swell or depression of the viscous fluid.

  The holes 34 and the horizontal communication pipe 35 connecting the holes 34 are provided in three stages in the vertical direction as shown in FIG. According to the configuration of the present invention, the horizontal communication pipe 35 is provided in two or more stages according to the height of the viscous damping wall, and the viscous body is smoothly moved over the entire height of the viscous damping wall. 2.

  FIG. 4 is a block diagram showing an embodiment of Configuration 3 and Configuration 4. FIG. 4 (1) is an elevation view, FIG. 4 (2) is a longitudinal sectional view, and FIG. ) Is an enlarged view of the upper circled portion, and the lower part of FIG. 4 (3) is an enlarged view of the lower circled portion of FIG. 4 (2).

  Conventionally, the uppermost part of the viscous damping wall is a liquid reservoir whose upper part is released, but as shown in the upper part of FIG. 330 is attached, and a rubber packing 61 is inserted between the tip and the inner wall steel plate to seal it. As a result, even when there is a swell of liquid at the top, the liquid is prevented from overflowing, and it also has a function of preventing rainwater from entering during construction.

  The lower part of FIG. 4 (3) is an installation view of the inspection hole 62 for confirming that the viscous fluid 54 is reliably filled in the horizontal communication pipe 35. A screw is provided on the upper surface of the horizontal communication pipe 35, and an inspection hole 62 having a leakage preventing function is constituted by a bolt.

  FIG. 5A is an example of configuration 5. In order for the viscous fluid to surely and easily flow into the horizontal communication pipe 35 provided in the configuration 1 and the configuration 2, the vertical shape of the end face of the inner wall steel plate 4 is formed by the holes 34 provided at both ends of the rising wall. Inclined to the innermost side (near the center of the vertical surface) so as to be the outermost side (near the vertical surface wife) at the intermediate height position of the upper and lower holes 34. Thereby, when the inner wall steel plate 4 moves and thrusts the viscous fluid 52, the viscous fluid is naturally pushed and collected in the direction of the hole 34.

In FIG. 5B, a concave notch 44 is provided at the height of the hole 34 of the inner wall steel plate so that the viscous fluid easily flows into the holes 34 provided at both ends of the rising wall, and the inner wall steel plate 4 moves. In this case, the hole 34 is not blocked by the inner wall steel plate 4.
In the figure, 36 is a combined portion of a bolt and a spacer sheath tube for restraining the outward opening of the outer wall steel plate, and 41 is a movement allowance for the inner wall steel plate 4 not to contact the bolt 36. Loose Hall.

  FIG. 6 shows the overall shape of Configuration 6, which is the second basic configuration of the present invention. FIG. 6 (1) is the overall elevation shape of the viscous damping wall of the present invention, and FIG. 6 (2) is a longitudinal section. FIG. 6 and FIG. 6 (3) are elevations of the wife surface.

  As shown in FIG. 6 (1), vertical liquid pools 38 are provided in the vicinity of the end faces of both ends of the outer rising wall.

  Since the conventional cross section of the viscous damping wall has a configuration in which the inner wall steel plate 4 is simply inserted into the box of the outer wall steel plate 31 as shown in FIG. Since there is no escape space for the viscous fluid 52 pushed on the side, it rises in the upper liquid reservoir, and on the opposite side, a gap corresponding to the amount of movement of the inner wall steel plate is created, so that a large depression is generated in the viscous fluid, and the inner wall steel plate When the wakes up, the effective area 51 of the viscous fluid decreases or an abnormal phenomenon such as entrainment of air bubbles occurs.

  In the present invention, as shown in FIG. 6 (1), the liquid pool 38 of the viscous fluid exists at both ends of the outer wall steel plate 31, so that the rise and decrease amount of the viscous fluid generated by the movement of the inner wall steel plate 4 is dramatically increased. Therefore, it is possible to stably exert a certain resistance force due to the shear laminar flow of the viscous fluid 51 on the side surface of the inner wall steel plate.

  FIG. 7 and FIG. 8 specifically show a method of configuring the liquid pool portion 38 in FIG.

  FIG. 7 (2) is a plan sectional view of the viscous damping wall showing the seventh embodiment that realizes the configuration 7. Viscous fluid passage holes 39 are formed in the vicinity of both end portions of the outer wall steel plate 31 of the viscous damping wall, and an L-shaped member 381 is disposed on the outer side thereof, so that a fluid reservoir 38 (viscous fluid in the reservoir) is formed. 55).

  FIG. 7 (3) is a plan sectional view of the viscous damping wall showing the third embodiment that realizes the configuration 8. A viscous fluid passage hole 39 is formed in the end face steel plate 32 of the viscous damping wall, and a C-shaped member 382 is disposed on the outside thereof, so that the liquid reservoir 38 (viscous fluid 55 of the liquid reservoir) is formed. It is composed.

  FIG. 8 (1) is a plan sectional view of a viscous damping wall showing a ninth embodiment that realizes the configuration 9. Square steel pipes 383 are disposed at both ends of the viscous damping wall to constitute a liquid pool 38 (viscous fluid 55 in the liquid pool).

  In Example 9, the liquid pools at both ends and the end face steel plate at the end of the viscous damping wall are integrated by a square steel pipe 383, so that the welding amount during assembly is small and the effective area for storing the viscous fluid is secured. It is easier and more rational.

  FIG. 8B is an example of a variation of configuration 9. The square steel pipes 383 at both ends of the viscous damping wall provided in Example 9 are rotated by 45 °, thereby joining the lower beam member or connecting member at the bottom of the viscous damping wall. This has the effect of facilitating the arrangement of the high strength bolts.

  FIG. 8 (3) is a cross-sectional plan view of a viscous damping wall showing Example 11 for realizing the configuration 10. The circular steel pipes 384 are disposed at both ends of the viscous damping wall to constitute a liquid pool portion 38 (viscous portion viscous fluid 55) of the viscous fluid.

  In Example 11, as in Examples 9 and 10, the liquid pool at both ends and the end face steel plate at the end of the viscous damping wall are integrated with a circular steel pipe 384, and the welding amount during assembly is small, and the viscosity is low. It is easy to secure the effective area of the fluid reservoir, and it has a more rational configuration.

  In addition, as in the tenth embodiment, the eleventh embodiment also has an effect that the arrangement of the high-strength bolts to be joined to the lower beam member or the connecting member at the bottom of the viscous damping wall is facilitated.

  FIG. 9 is an embodiment showing the constitution 11 of the present invention, FIG. 9 (1) is the overall elevation shape of the viscous damping wall, FIG. 9 (2) is its longitudinal sectional view, and FIG. 9 (3) is the horizontal sectional view. FIG.

  As shown in FIGS. 9 (1) and 9 (3), horizontal horizontal pipe lines 351 are attached to both outer side surfaces of the rising outer wall surface 31 of the viscous damping wall, and both ends thereof are opposite ends of the viscous damping wall. This is connected to the vertical liquid pool portion 38 (viscous fluid 55) formed inside the vertical member 383.

  When the inner steel plate 4 moves horizontally, the viscous fluid is pushed out to the vertical liquid pool portion on the front side of the inner steel plate 4 and is sucked on the rear surface side. 351 (inside 54) communicates, the viscous body pushed out on the front side of the inner wall steel plate 4 moves to the vertical vertical liquid pool 38 (viscous fluid 55) via the viscous conduit 54. Thus, the viscous fluid is maintained at a constant liquid level, and a stable viscous resistance force can be exhibited.

  The configurations 12 to 16 are configurations in which a frictional resistance force is added to the viscous damping wall in order to reduce the variation rate of the resistance force due to a temperature change and increase the resistance force of the entire apparatus. That is, the viscous damping walls of the constitutions 12 to 16 realize a composite damping device of “viscous resistance force Fv + friction resistance force Fμ”, and the resistance force due to the temperature of the viscous resistance force Fv is ± 50%. Even if there is, for example, if the frictional resistance force Fμ equivalent to the viscous resistance force is added, the fluctuation range is halved to ± 25%, and the resistance force of the entire apparatus can be stabilized.

  FIG. 10 shows an example of the configuration 12 and the configuration 13. As shown in FIGS. 10 (1) and 10 (2), the vicinity of the upper end of the rising wall (= outer wall steel plate) 31 is brought into contact with the inner wall steel plate (= hanging wall) 4 without any gap, and both wall plates of the contact portion are penetrated. The high-strength bolt 90 is arranged, and axial force is introduced into the high-strength bolt 90, so that there is a displacement between the rising wall 31 and the hanging wall 4 that are in contact by the interlayer displacement between the upper floor and the lower floor. When generated, a sliding friction force is generated between both wall plates.

  FIG. 10 (3) is an enlarged cross-sectional view of the vicinity of the upper end of the viscous damping wall. The upper diagram shows the arrangement position of the high-strength bolt 90 that introduces the axial force for tightening the wall plate, and the interruption diagram is shown in configuration 13. Sectional view of the position where the frictional peristaltic material 7 is incorporated in the hanging wall (inner wall steel plate) 4, and the lower diagram is a storage that catches when the viscous fluid shown at both ends near the upper part of FIG. 10 (1) overflows FIG.

  FIG. 5 (2) shows an embodiment in which the frictional peristaltic material 7 is incorporated in addition to the vicinity of the upper part of the inner wall steel plate 4, and the bolt 36 used for preventing the side wall outer steel plate 31 from squeezing out is used as a friction force. The structure utilized for the axial force introduction is shown.

  FIG. 11 shows an example of the configuration 14. As a second method of adding frictional resistance to the viscous damping wall, a horizontal plate 43 is attached in the vicinity of the upper portion of the hanging wall (inner wall steel plate) 4 and comes into contact with the horizontal plate and once rises (outer wall steel plate) 31. The horizontal plate 37 fixed to the horizontal plate 41 is sandwiched, and the horizontal plate 41 is sandwiched between the horizontal plates 41. Generates sliding friction force.

  FIG. 12 shows a method of the configuration 15 in which one of the friction dampers 9 that generate a frictional force is fixed to the upper floor beam side, and the other is fixed near the upper part of the rising wall (= outer wall steel plate) of the viscous damping wall. . FIG. 13 is an enlarged view showing the configuration of the friction damper 9, showing an internal friction plate 81 fixed on the beam side of the upper floor, an outer friction plate 82 sandwiching the internal friction plate 81, and a high-strength bolt 90 for introducing axial force. ing. Further, the frictional peristaltic material 7 is interposed between the contact portions of the friction plates 81 and 82.

  FIG. 14 similarly shows an embodiment of the configuration 16 in which the friction damper is attached near the upper part of the viscous damping wall. The friction damper of FIG. 14 is characterized in that the friction plate 83 can rotate around its mounting pin 92 (rotation center pin). A horizontal displacement of the upper floor is transmitted to the friction plate 83 by the connecting member 81 fixed to the upper floor beam side and its pin 91 (upper pin) on the upper portion of the friction plate 83, and the friction plate 83 causes a rotational motion to A sliding frictional resistance force is generated at the portion of the friction sliding plate 7 attached below.

  It is generated in the friction peristaltic plate 7 by changing the ratio of the distance L1 between the center pin 92 and the upper pin 91 and the distance L2 between the center pin 92 and the center of the lower friction peristaltic plate 7 (L1 <L2). The friction force F to be amplified can be amplified by (L2 / L1) times, and a large frictional resistance force can be obtained even if the introduction axial force by the bolt 90 is small.

  The 2003 Tokachi-oki earthquake (Mw 8.0) ignited an oil tank and revealed the threat of long-period ground motion. Later, joint research between the Architectural Institute of Japan and the Japan Society of Civil Engineers revealed that there was a problem with the seismic performance of high-rise buildings against long-period ground motion. One way to improve the seismic safety of skyscrapers with a natural period of several seconds is to adopt a seismic control structure that enhances the damping performance of the building.

  In order to build a high-rise building into a seismic control structure, it is necessary to add a damping device (damper) that imparts energy absorption performance to the building. Among the dampers, the simplest, high-performance, and powerful damping device is viscous. It is a damping wall. However, the cost is slightly higher than that of steel history dampers, so the actual use is limited to buildings with high added value.

  In addition, the seismic isolation structure can provide the most excellent safety for medium- and low-rise structures with a short period of 15 stories or less. The viscous damping wall of the present invention can also be used as a damping device for a seismic isolation structure. Excellent performance can be provided.

  As described above, the mechanical problems of this viscous damping wall have been improved by the present invention, and since it has evolved into a more powerful device, the cost performance is relatively improved as compared with the conventional device, mainly in high-rise buildings. It is expected to contribute greatly to improving the seismic performance of long-period structures and seismic isolation structures.

DESCRIPTION OF SYMBOLS 1: Column 20: Floor slab 21: Upper floor side beam 22: Lower floor side beam 23: Attachment member of viscous damping wall 31: Side surface steel plate of rising wall (outer wall steel plate) of viscous damping wall 32: Viscosity damping Steel plate 33 of rising wall (outer wall steel plate) of seismic wall 33: Upper liquid pool part steel plate of rising wall (outer wall steel plate) of viscous damping wall 330: Upper surface of upper liquid pool part of viscous damping wall 34: Rising wall ( Hole 35 provided at the end of the side surface steel plate 31 of the outer wall steel plate 35: Horizontal communication pipe 351 connecting the end hole 34 351: Horizontal communication pipe 36: Bolt and spacer sheath pipe 37 for tightening the outer wall steel plate 37: Standing wall (outer wall steel plate) ) Fixed friction plate 38: vertical liquid reservoirs at both ends of the damping wall 381: L-shaped member for forming a vertical liquid reservoir outside the outer wall steel plate 31 382: Lead outside C-shaped member constituting the liquid reservoir 383: Square steel pipes at both ends of the damping wall for constituting the vertical liquid reservoir 384: Circular steel pipes at both ends of the damping wall for constituting the vertical liquid reservoir 39: Viscous fluid Passing hole or slit 4: Drooping wall (inner wall steel plate) of viscous damping wall
41: Loose hole for moving the bolt 36 provided on the hanging wall (inner wall steel plate) 42: Tapered shape of the front and rear end portions of the hanging wall (inner wall steel plate) 43: Friction resistance provided near the upper part of the hanging wall (inner wall steel plate) Horizontal plate 44: Concave cut portion at the front and rear end of the hanging wall (inner wall steel plate) 5: Viscous fluid 51: Viscous fluid laminar flow portion at the side of the resistance wall plate 52: Front wall of the hanging wall plate (inner wall steel plate) Viscous fluid 53: Viscous fluid reservoir above the viscous damping wall 54: Horizontal communication pipe and viscous fluid inside it 61: Rubber packing above the viscous fluid reservoir 62: Viscosity fluid inspection hole and plug in the horizontal duct Bolt 7: Friction vibration material for friction damper 81: Upper beam side mounting member of friction damper 82: Mounting member on the rising wall (outer wall steel plate) side of friction damper 83: Rotary friction damper Rotating plate 9: Friction damper 90: High-strength bolt for introducing axial force of the friction damper 91: Upper beam side pin member of the rotary friction damper 92: Rotation center pin bolt of the rotary friction damper 93: Mounting bolt

Claims (17)

A wall member that connects the upper and lower floors of buildings and other structures,
A plurality of wall plates fixed to the floor slab or beam on the lower floor are raised in parallel, and the end of the wall plate is closed to form a box-shaped wall body, which is fixed to the floor slab or beam on the upper floor In a viscous damping wall in which a plurality of suspended wall plates are inserted into the box-shaped wall body and a viscous fluid is filled in a gap between the rising wall plate and the suspended wall plate,
Holes are formed in the vicinity of the end faces of both ends of the rising walls constituting both outer wall surfaces, a horizontal communication pipe line is provided outside the outer wall surfaces to connect the holes, and the inside is filled with viscous fluid. A viscous damping wall characterized by that. In the viscous damping wall according to claim 1,
The viscous damping wall according to claim 1, wherein the horizontal communication pipe line outside the outer wall surface is provided in two or more stages in the vertical direction. In the viscous damping wall according to claim 1 or 2,
A viscous fluid liquid reservoir portion of a horizontal communication pipe line is provided outside the uppermost end of the rising outer wall surface, and an upper surface cover is disposed on the upper portion thereof to cover the inner suspension wall, and a gap between the upper surface lid and the inner suspension wall is disposed. A viscous damping wall characterized in that an elastic body such as rubber packing is adhered and sealed. The viscous damping wall according to any one of claims 1 to 3,
A viscous damping wall comprising an inspection hole for confirming an internal viscous fluid on an upper surface of the horizontal communication pipe. The viscous damping wall according to any one of claims 1 to 4,
The vertical shape of the end face of the hanging wall is inclined so that it is the innermost at the hole portion at both ends of the rising wall and the outermost at the intermediate height position of the hole, or the hanging wall A viscous vibration-damping wall characterized in that the vicinity of the height of the hole position of the outer wall is cut into a concave shape at the end of the wall. A wall member that connects the upper and lower floors of buildings and other structures,
A floor slab on the lower floor or a plurality of wall plates fixed to a beam or a connecting member on the beam are raised in parallel, and a box-shaped wall body is formed by closing the end of the wall plate. In the viscous damping wall in which one or more suspended wall plates fixed to a beam or a connecting member are inserted into the box-shaped wall body, and a viscous fluid is filled in a gap between the rising wall plate and the suspended wall plate,
It is characterized by having a vertical reservoir of viscous fluid having a width larger than the width (thickness) of the central portion of the box-like wall body at both ends of the rising walls constituting both outer wall surfaces. Viscous damping wall. The viscous damping wall according to claim 6,
A viscous damping wall, wherein a plurality of holes are provided in the vertical direction in the vicinity of both ends of the outer wall surface, and L-shaped members are disposed on both outer sides to constitute the liquid pool portion of the vertical shape. The viscous damping wall according to claim 6,
Provide a plurality of holes or slits in the vertical direction on the end face steel plate of the rising box-like wall,
A viscous damping wall, wherein a C-shaped member is disposed outside the end-face steel plate to constitute the liquid pool portion having the vertical shape. The viscous damping wall according to claim 6,
The viscous damping wall according to claim 1, wherein square steel pipes are arranged in the vertical direction at both ends of the rising outer wall surface to constitute the liquid pool portion having the vertical shape. The viscous damping wall according to claim 6,
A viscous damping wall characterized in that a circular steel pipe is arranged in the vertical direction at both ends of the rising outer wall surface to constitute the liquid pool portion of the vertical shape. In the viscous damping wall according to any one of claims 6 to 10,
A horizontal horizontal communication pipe is attached to both outer side surfaces of the rising outer wall surface,
A viscous damping wall characterized in that both ends thereof are connected to the vertical liquid pools disposed at both ends of the rising outer wall surface. A wall member that connects the upper and lower floors of buildings and other structures,
A plurality of wall plates fixed to the floor slab or beam on the lower floor are raised in parallel, and the end of the wall plate is closed to form a box-shaped wall body, which is fixed to the floor slab or beam on the upper floor In a viscous damping wall in which a plurality of suspended wall plates are inserted into the box-shaped wall body and a viscous fluid is filled in a gap between the rising wall plate and the suspended wall plate,
A part of the rising wall plate is brought into contact with the hanging wall without a gap, and a high-strength bolt penetrating both wall plates of the contact portion is arranged, and axial force is introduced to the high-strength bolt, and the building A viscous damping wall characterized in that a frictional force is generated between the wall plates in contact with each other by relative displacement between an upper floor and a lower floor. The viscous damping wall according to claim 12,
A viscous vibration control wall characterized in that a frictional peristaltic member is incorporated in a part of the rising wall or hanging wall in the contact portion. A wall member that connects the upper and lower floors of buildings and other structures,
A plurality of wall plates fixed to the floor slab or beam on the lower floor are raised in parallel, and the end of the wall plate is closed to form a box-shaped wall body, which is fixed to the floor slab or beam on the upper floor In a viscous damping wall in which a plurality of suspended wall plates are inserted into the box-shaped wall body and a viscous fluid is filled in a gap between the rising wall plate and the suspended wall plate,
A horizontal plate is attached near the upper portion of the hanging wall, a horizontal plate that is in contact with the horizontal plate and once fixed to the rising wall is provided, and a high-strength bolt that penetrates both horizontal plates that are in contact is disposed. A viscous damping wall characterized in that an axial force is introduced into the high-strength bolt and a frictional force is generated between the horizontal plates in contact with each other by a relative displacement between the upper floor and the lower floor of the building. . A wall member that connects the upper and lower floors of buildings and other structures,
A plurality of wall plates fixed to the floor slab or beam on the lower floor are raised in parallel, and the end of the wall plate is closed to form a box-shaped wall body, which is fixed to the floor slab or beam on the upper floor In a viscous damping wall in which a plurality of suspended wall plates are inserted into the box-shaped wall body and a viscous fluid is filled in a gap between the rising wall plate and the suspended wall plate,
Two or more friction plates facing and contacting each other are arranged outside the upper end portion of the rising wall, and high force bolts are arranged inside or near the outside of the plane to introduce axial force. One of the above is fixed to the upper floor beam or a joint member integrated with the beam, and the other friction plate is combined with a friction damper in the vicinity of the upper part of the rising wall of the viscous damping wall. Viscous damping wall. The viscous damping wall according to claim 15,
The friction damper has a rotation center axis fixed to the rising wall side of the viscous damping wall and a rotation friction plate that can rotate around the center axis, and one end of the rotation friction plate is on the upper floor beam side. Connected, the other is brought into contact with a friction flat plate fixed to the viscous damping wall, both high friction bolts are arranged in the vicinity of both friction surfaces, and both friction plates are tightened.
It is characterized by combining a friction damper that can arbitrarily set a distance L1 between the rotation center axis and the connection point on the upper floor side and a distance L2 between the rotation center axis and the center of the friction surface. Viscous damping wall. The viscous damping wall according to any one of claims 1 to 16,
A viscous damping wall characterized by having two or more walls hanging from the upper floor and three or more rising walls from the lower floor.

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