JP5138825B1 - Viscous damping wall - Google Patents

Abstract

[PROBLEMS] To stabilize the damping performance of viscous damping walls used for damping structures of high-rise buildings, etc., to generate large-amplitude excitations due to strong ground motions near the source area, and long periods due to long-period ground motions or very large earthquakes Provided is a viscous damping device that does not deteriorate in performance against repeated repeated vibrations caused by time-continuous ground motion.
SOLUTION: A wall member that connects an upper floor and a lower floor of a building and other structures, and a liquid reservoir portion 38 is provided at both ends of a plane of a rising wall plate (outer wall steel plate) 31 of a viscous damping wall, The hanging wall plate (inner wall steel plate) 41 is made longer than the outer wall steel plate 31 so that the end moving position of the hanging wall plate (inner wall steel plate) 41 is always located in the liquid pools at both ends.
[Selection] Figure 4

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.

  Among these damping (damping) dampers, steel history dampers, which are easy to handle in design and are considered practical from the viewpoint of usability and economy, have been used in many cases. From the experience of the 2011 off the Pacific coast of Tohoku Earthquake (Mw9.0), there is almost no effect as a vibration control structure, and for long-period ground motion that lasts for more than 10 minutes, It has been pointed out that there is anxiety about its fatigue characteristics. This problem is a problem that has been pointed out in the past because it is considered to be in a storm zone for several hours or more when not only an earthquake but also a direct hit of a large typhoon, especially when the speed is slow.

  It is considered that a viscous damper that exhibits a resistance proportional to the speed is superior to the metal hysteresis damper from the viewpoint of fatigue characteristics and the effect of suppressing the response of the structure. Among viscous dampers, cylinder-shaped oil dampers have the advantage of low temperature dependence and easy handling in design and analysis, and in recent years their use cases have increased rapidly. There is a risk of leakage of internal fluid due to the generation of pressure, and there is concern about sealing (leakage prevention) performance over a long period of time. In addition, according to a dynamic shaking table experiment of a real device carried out in recent years, the oil vaporizes due to the rapid negative pressure side movement, and when the displacement reverses, the resistance force on the compression side does not occur over a considerably large amplitude, and the damper function It has been reported that the phenomenon of drastically lowering the oil damper has occurred, and it has been revealed that the oil damper has a serious problem.

  On the other hand, the wall-shaped viscous damping wall is a viscous damper with a very simple configuration and does not have a precise mechanical device part like an oil damper, so it is maintenance-free and has excellent long-term durability. It has the feature that operation reliability is high and high viscous damping performance can be given to the structure. Since the Great Hanshin Earthquake, the number of applications has been gradually increasing mainly in high-rise buildings, and it is also used as a damping device 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 6) and the like have been made to date.

Japanese Patent Publication No. 02-001947 Japanese Patent Laid-Open No. 11-071935 JP 2000-220318 A JP 2001-132265 A JP 2007-009452 A JP 2010-255302 A

  However, the following problems to be solved remain in the known prior art.

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, on the rear surface of the inner wall steel plate, a negative pressure is generated by the movement of the inner wall steel plate and a gap is generated. The viscous fluid tries to fill this gap, but because the viscosity is high, the flow of the viscous fluid does not catch up, a large depression occurs, the effective area decreases, and when the inner wall steel plate returns, the viscous fluid is insufficient There is a problem that should be improved to stabilize the resistance force especially when large amplitude vibration is repeated, such as when the resistance force decreases or sometimes air bubbles are entrained and the inner wall steel plate crushes this and a big plosive sound may be generated. is there.

  Moreover, since a high pressure is generated on the front surface of the inner wall steel plate, the distance between the inner wall steel plate and the outer wall steel plate (layer thickness of the viscous fluid) is widened, causing a decrease in resistance.

  In particular, a large-scale earthquake with a magnitude of 8 to 9 has a long duration and is repeatedly subjected to repeated force for a long time and a large number of times, so that the problem of a decrease in resistance due to the repeated many times is likely to be remarkable.

  The present invention has been made to solve the above problems, and provides a highly reliable viscous damping device that further stabilizes the performance of a viscous damping wall that is an excellent damping device for a structure. With the goal.

The following configurations are means for solving the above-described problems.
<Configuration 1>
A wall member that connects the upper and lower floors of buildings and other structures,
A plurality of rising wall plates fixed to the floor slab of the lower floor or a beam or a connecting member on the beam are raised in parallel, and each end of the plurality of rising wall plates is closed to form a box-shaped wall body And inserting one or more hanging wall plates fixed to the upper floor slab or beam or the connecting member between the rising wall plates in the box-shaped wall, and the rising wall plate and the hanging wall In the viscous vibration control wall where the gap between the plates is filled with viscous fluid,
A vertical liquid pool portion having a width larger than the width (length in the thickness direction) of the central portion of the box-shaped wall body is provided at both planar ends of the plurality of rising wall plates constituting both outer wall surfaces. And
The viscous damping wall according to claim 1, wherein a length of the hanging wall plate fixed to the upper floor side is longer than a length of the rising wall plate fixed to the lower floor side.

<Configuration 2>
A wall member that connects the upper and lower floors of buildings and other structures,
A plurality of rising wall plates fixed to the floor slab of the lower floor or a beam or a connecting member on the beam are raised in parallel, and each end of the plurality of rising wall plates is closed to form a box-shaped wall body And inserting one or more hanging wall plates fixed to the upper floor slab or beam or the connecting member between the rising wall plates in the box-shaped wall, and the rising wall plate and the hanging wall In the viscous vibration control wall where the gap between the plates is filled with viscous fluid,
A vertical liquid pool portion having a width larger than the width (length in the thickness direction) of the central portion of the box-shaped wall body is provided at both planar ends of the plurality of rising wall plates constituting both outer wall surfaces. And
The viscous damping wall according to claim 1, wherein a length of the hanging wall plate fixed to the upper floor side is substantially the same as a length of the rising wall plate fixed to the lower floor side.

<Configuration 3>
In the viscous damping wall according to Configuration 1 and Configuration 2,
The vertical liquid reservoirs provided at both ends of the outer wall surface have a rectangular planar shape and are provided in parallel to the axial direction of the plane of the rising wall plate. Earthquake wall.

<Configuration 4>
In the viscous damping wall according to Configuration 1 and Configuration 2,
The vertical liquid reservoirs provided at both ends of the outer wall surface have a rectangular planar shape, and the top of the planar surface is provided at the outermost end of the central axis of the plane of the rising wall plate. Viscous damping wall characterized by

<Configuration 5>
In the viscous damping wall according to Configuration 1 and Configuration 2,
The viscous damping wall according to claim 1, wherein the vertical liquid reservoirs provided at both ends of the outer wall surface have a circular or elliptical planar shape.

<Configuration 6>
In the viscous damping wall according to any one of Configurations 1 to 5,
A viscous damping wall having three rising walls and two hanging walls,
A central rising wall body among the three rising wall bodies is connected to and integrated with the box-shaped wall body in the vertical liquid reservoir,
A viscous vibration control wall having a plurality of holes in the vertical direction in the liquid reservoir portion in the vertical direction.

<Configuration 7>
In the viscous damping wall according to any one of Configurations 1 to 6,
Viscosity lower in viscosity than the viscous fluid sealed in the overlapping portion facing the rising wall plate and the hanging wall plate in the vertical liquid pool portion and the horizontal liquid pool portion above the rising wall plate. Viscous damping wall characterized by enclosing fluid.

  In the present invention, the flow of the viscous fluid accompanying the movement of the drooping wall plate (inner wall steel plate) of the viscous damping wall is stabilized, and it is possible to provide a stable viscous damping resistance and energy absorption performance even during large amplitude vibrations. Became.

  In particular, in the present invention, with the movement of the inner wall steel plate of the viscous damping wall, an increase in pressure on the front side where the inner wall moves and a swell of the viscous fluid are eliminated at the end of the viscous damping wall, and at the rear side, The generation of negative pressure and the phenomenon of viscous fluid dents can be greatly relieved, thereby avoiding the phenomenon of air entrainment and avoiding deterioration of damping performance due to large amplitude vibrations and repeated repeated vibrations. Is done.

  For example, in a conventional viscous damping wall, the gap between the hanging wall plate (inner wall steel plate) and the rising wall plate (outer wall steel plate) is 2 mm, the thickness of the inner wall wall plate in the viscous fluid is 16 mm, and the height is 2 m. In the case of a seismic wall, if the inner wall steel plate moves 5 cm during an earthquake, the viscous fluid that the inner wall steel plate tries to push away 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 present invention, assuming that a liquid pool portion having a width of 15 cm and a length of 15 cm is provided at both ends of the viscous damping wall, the fluctuation of the liquid surface height of the viscous fluid is 1600 / (15 × 15) = 7.1 cm. And it will be 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 air entrainment phenomenon can be greatly improved. This effect has been solved in Patent Document 6.

  However, in Patent Document 6, since the inner wall steel plate is arranged between the narrow outer wall steel plates as in the conventional seismic wall, the end face of the inner wall steel plate pushes the viscous fluid between the outer wall steel plates, The phenomenon of entrainment is the same as before, and in order to force the movement of viscous fluid in a narrow space, there still remains a part where pressure rise, negative pressure generation, air entrainment phenomenon can not be completely avoided .

  With respect to this problem, in the configuration 1 of the present invention, the inner wall steel plate is extended to the liquid pools at both ends of the wall body, and the outer wall with a narrow gap is provided even when the inner wall steel plate moves relative to the outer wall steel plate during operation. The phenomenon that the inner wall steel plate does not exist between the steel plates does not occur. Thereby, generation | occurrence | production of a negative pressure is relieve | moderated and the entrainment phenomenon of air can be avoided. At least the air entrainment in the effective area portion of the wall (the facing area of the outer wall steel plate) cannot be generated, the effective area associated with the air entrainment is not reduced, and the performance is stabilized.

  FIG. 7 shows a result obtained by actually measuring and confirming this effect. The left side (1) of FIG. 7 is the pressure rise in the conventional type damping wall and the resulting squeeze deformation in the out-of-plane direction at the end of the outer wall steel plate, and the right side (2) is the damping wall of the present invention. Pressure rise and out-of-plane squeeze deformation. As a result, the pressure rise is greatly improved, and the outer wall steel plate hardly squeezes out in the out-of-plane direction.

  In particular, this effect is great for severe excitation conditions such as when the displacement amplitude is large or the number of times of application is repeated many times, the performance is stabilized, and the reliability of the damping device is improved.

  The configuration 2 of the present invention is intended to reduce the effective area according to the amount of movement of the inner wall steel plate by making the length of the inner wall steel plate the same as the length of the outer wall steel plate. This is intended to reduce the burden stress of the structure by suppressing an increase in resistance force due to an increase in deformation.

  The safety of high-rise buildings against long-period ground motions caused by M8 to M9 class oceanic earthquakes, including the Tohoku Pacific Ocean Earthquake, has been pointed out, and the viscous damping wall according to the present invention is a long characteristic of giant earthquakes. Since stable damping performance can be provided for a large number of repeated vibrations in the duration, the reliability and safety of the damping device and the highly damped damping structure can be 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 conventional viscous damping wall which this invention makes object, (1) The front view of a viscous damping wall, (2) The longitudinal cross-sectional view of a viscous damping wall. It is the whole shape figure of the damping wall of this invention, (1) The front view of the viscous damping wall of this invention, (2) The longitudinal cross-sectional view of the AA line arrow of FIG. 2 (1), (3) It is a side view of the viscous damping wall of invention. It is a cross-sectional view showing the difference between the conventional damping wall and the damping wall of the present invention. (1) Planar shape of the end of the conventional shaking wall, (2) Conventional damping wall having a liquid reservoir at the end (3) When the inner steel plate (hanging wall) protrudes into the liquid pool part, and (4) The end planar shape of the present damping wall In each case, the length of the inner steel plate (hanging wall) is equal to that of the outer wall steel plate (rising wall). It is a cross-sectional view showing the relationship between the shape of the end liquid pool portion of the present invention damping wall and the hanging wall plate (inner wall steel plate). (1) When the planar shape of the liquid pool portion at the end is rectangular, (2) When the planar shape of the liquid reservoir at the end is rectangular and rotated by 45 °, (3) when the planar shape of the liquid reservoir at the end is circular, respectively. It is a cross-sectional view of the double type of the damping wall of the present invention (when there are two hanging walls), (1) When the planar shape of the liquid reservoir at the end is rectangular, (2) The liquid reservoir at the end When the planar shape is rectangular and rotated by 45 °, each is shown. It is explanatory drawing which shows arrangement | positioning of the viscous fluid from which the viscosity differs in the viscous damping wall of this invention, (1) Distribution map of the viscous fluid seen from the front elevation of the viscous damping wall, (2) Longitudinal section of the viscous damping wall Fig. (3) Cross section of viscous damping wall. It is a diagram showing the result of actually measuring and confirming the effect, (1) showing the pressure rise in the conventional vibration control wall and the squeeze deformation state in the out-of-plane direction at the end of the outer wall steel plate that occurs as a result (2) It is a figure which shows the pressure rise and the out-of-plane squeeze deformation state in this invention damping wall.

  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 from the front of the viscous damping wall, and (2) is the center of the viscous damping wall plane. FIG.

  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 a connecting member 23. A rising wall plate (outer wall steel plate) 31 is raised in parallel on the floor slab 20 or the beam 22 or the connecting member 23 on the lower floor, and the end of the wall plate is closed to constitute a box (box-like wall). . A suspended wall plate (inner wall steel plate) 41 fixed to the floor slab 20 or the beam 21 on the upper floor is suspended therein, and a gap between the rising wall plate (outer wall steel plate) 31 and the suspended wall plate (inner wall steel plate) 41 is suspended. The viscous fluid 5 is filled.

  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.

FIG. 2 shows the overall shape of the damping wall of the present invention.
The viscous damping wall according to the present invention is a wall member that connects the upper floor and the lower floor of buildings and other structures, and is configured as follows. As shown in FIG. 2, a plurality of rising wall plates (outer wall steel plates) 31 fixed to a floor slab on the lower floor or a beam 22 or a connecting member 23 on the beam are arranged in parallel to form a plurality of rising walls. A box-like wall is formed by closing both planar ends of the plate 31. One or more hanging wall plates (inner wall steel plates) 41 fixed to the floor slab or beam 21 or connecting member 23 of the upper floor are inserted and arranged in a box-shaped wall body, and the rising wall plate 31 and the hanging wall plate 41 are The gap is filled with viscous fluid. Between the opposing surfaces of the planar both ends of the plurality of rising wall plates 31, there is provided a vertical liquid reservoir portion 38 having a larger interval than the interval between the opposing surfaces at the central portion of the rising wall plate 31. . The vertical liquid reservoir means a liquid reservoir extending in the vertical direction. By extending both ends of the hanging wall plate 41 fixed to the upper floor side into the vertical liquid pool portion, the length of the hanging wall plate 41 is longer than the length of the rising wall plate 31 fixed to the lower floor side. It is also long.
Since the viscous damping wall of the present invention has the vertical liquid reservoir 38 at the end of the rising wall plate, FIGS. 2 (1) and 2 (3) also show the cylindrical wall material 39 surrounding the periphery thereof. Is visible. In addition, an upper liquid reservoir 33 having a shape extending in the horizontal direction for absorbing the overflow of the viscous fluid accompanying the movement of the inner wall steel plate 41 is formed at the upper end of the rising wall plate. Fig. 2 (2) shows a longitudinal sectional view along the AA arrow in the vicinity of the plane center of the rising wall plate, and Fig. 2 (3) is an elevation view (side view) of the end surface of the rising wall plate. It is. In the side view, the end face of the cylindrical wall member 39 in the vertical liquid reservoir is visible.

  FIG. 3 is an enlarged view of the differences between the present invention damping wall and the conventional damping wall. FIG. 3 (1) is a basic type of conventional viscous damping wall, and a face plate 32 is connected to both ends of parallel rising wall plates (outer wall steel plates) 31 to form a box-shaped container. A drooping wall plate (inner wall steel plate) 41 is suspended in the inside, and the gap is filled with a viscous fluid. This is the basic shape (prototype) of the conventional viscous damping wall.

  FIG. 3 (2) is an improved viscous damping wall according to Patent Document 6, which has a vertical liquid reservoir 38 that stores viscous fluid at the end of a parallel rising wall plate (outer wall steel plate) 31. The cylindrical wall material 39 surrounds the periphery. However, the hanging wall plate (inner wall steel plate) 41 is shorter than the rising wall plate (outer wall steel plate) 31, and the effective area for generating the viscous resistance force of the viscous fluid is that of the hanging wall plate (inner wall steel plate) 41 and the rising wall plate (outer wall). The effective area is determined by the length of the hanging wall plate (inner wall steel plate) 41.

  FIG. 3 (3) shows the viscous damping wall according to the first aspect of the present invention. The liquid reservoir 38 stores the viscous fluid at the end of the parallel rising wall plate (outer wall steel plate) 31, and the cylindrical wall constituting the same. The configuration including the material 39 is the same as that of Patent Document 6, but in the present invention, the hanging wall plate (inner wall steel plate) 41 is longer than the rising wall plate (outer wall steel plate) 31 and is effective in generating the viscous resistance force of the viscous fluid. The area is determined by the length of the rising wall plate (outer wall steel plate) 31.

  When the hanging wall plate (inner wall steel plate) 41, which is a hanging wall, moves relative to the rising wall plate (outer wall steel plate) 31, the end portion of the hanging wall plate (inner wall steel plate) 41 has a liquid reservoir portion 38 of viscous fluid. Since it moves within the range, escape of the viscous fluid accompanying the movement of the hanging wall plate (inner wall steel plate) 41, or replenishment (hole filling) of the gap portion to be generated is easily performed. As a result, the pressure rise of the viscous fluid accompanying the movement of the hanging wall plate (inner wall steel plate) 41 is greatly relieved, and the resulting rising wall plate (outer wall steel plate) 31 squeezes out in the out-of-plane direction almost completely. To be resolved. This effect confirmed by the experiment is as shown in FIG. 7 and as described in paragraph [0026].

  An embodiment of Configuration 2 of the present invention is shown in FIG. In the configuration 2, the length of the hanging wall plate (inner wall steel plate) 41 is substantially the same as the length of the rising wall plate (outer wall steel plate) 31. By adopting this configuration, the effect of suppressing the pressure rise when the hanging wall plate (inner wall steel plate) 41 moves to the liquid pool portion 38 side is the same as the configuration 1 of the present invention. When moving to the opposite side, the overlapping area facing the rising wall plate (outer wall steel plate) 31 decreases, so that the effective area of the viscous damping wall decreases, and as a result, the viscous drag force slightly decreases. It is intended. In other words, when the restoring force characteristic (displacement-resistance force relationship) of the viscous damping wall is expressed on the graph, the effect of suppressing the increase of the resistive force in the first quadrant and the fourth quadrant is born. It is intended to reduce the burden stress on the attached structure side, especially the mounting beam.

  FIG. 4 shows an example of configurations 3 to 5 according to the present invention. The shape of the liquid pool part 38 provided in the damping wall edge part and the cylindrical wall material 39 surrounding the circumference | surroundings is shown. FIG. 4 (1) shows the configuration 3 of the present invention, that is, the case where the liquid reservoir planar shape is rectangular and parallel to the wall axis. FIG. 4 (2) shows Configuration 4 of the present invention, that is, a case where the liquid reservoir planar shape is rectangular and the angle is rotated 45 degrees. FIG. 4 (3) shows a case where the planar shape of the liquid reservoir is circular or elliptical.

  The configuration 3 of the present invention has the advantage that the liquid reservoir is relatively easy to assemble and manufacture, and the configuration 4 efficiently and efficiently arranges the lower mounting bolt 9 for fixing the viscous damping wall. There is a merit that it can be arranged at an effective position, and the configuration 5 has a merit that it is possible to configure the cylindrical member 39 without welding by using a circular cross-section material, and it is easy to ensure vertical axial rigidity. .

  An embodiment of Configuration 6 of the present invention is shown in FIG. Configuration 6 is a so-called double-type viscous vibration control wall configuration with two rising wall plates 31 as outer wall steel plates, one rising wall plate 34 as a central inner steel plate, and two hanging wall plates 41. is there. FIG. 5 (1) shows an embodiment in which the planar shape of the liquid reservoir portion 38 at the end is rectangular and parallel to the wall axis, and FIG. 5 (2) shows the rectangular shape of the planar shape of the liquid reservoir portion 38 at an angle. Each of the examples in the case of rotating 45 degrees is shown. The central rising wall 34 of the three rising wall bodies extends and is integrated with the box 39 of the liquid reservoir, and a plurality of holes 348 are formed in the liquid reservoir 38 in the vertical direction. It is characterized by having. The presence of the hole 348 not only facilitates and improves the efficiency of injecting and filling the viscous fluid during production, but also increases the pressure increase of the viscous fluid during operation and the effect of filling the gap. In addition, if any abnormality occurs in one of the liquid reservoirs, the abnormality can be alleviated and uniformed.

  An embodiment of Configuration 7 of the present invention is shown in FIG. 6 (1) is an elevational view seen from the front of the viscous damping wall, showing the distribution of viscous fluid, FIG. 6 (2) is a longitudinal sectional view near the center of the plane, and FIG. It is a cross-sectional view near the central portion. As shown in FIG. 6 (1), the overlapping portion 50 (the double of FIG. 6 (1)) where the rising wall plate (outer wall steel plate) 31 and the hanging wall plate (inner wall steel plate) 41 that generate the viscous resistance force face each other. The hatch portion is filled with a viscous fluid 51 having a high viscosity. The liquid reservoirs 38 at both ends of the plane of the viscous damping wall and the upper horizontal liquid reservoir 33 are filled with viscous fluids 52V and 52H having low viscosity. Since the viscous fluids 52V and 52H having a low viscosity move immediately to fill the gaps that are to be generated as the drooping wall plate (inner wall steel plate) 41 moves, air entrainment does not occur and many times. It becomes a more stable and reliable viscous damping device against repeated vibration and severe vibration with large amplitude. The viscous fluids with different viscosities are basically the same material (polymer material), and the difference in viscosity is the difference in the molecular weight of the polymer. Does not occur.

  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.

1: pillar 20: floor slab 21: beam on the upper floor 22: beam on the lower floor 23: connecting member 31: rising wall plate (outer wall steel plate)
32: Wife face steel plate 33: Upper liquid reservoir 34: Rising wall plate (internal steel plate)
348: Hole provided in the rising wall plate (inner steel plate) 35: Reinforcing member for preventing out-of-plane deformation 36: Bolt for restraining out-of-plane deformation 38: Vertical liquid reservoirs at both ends of the damping wall 39: Liquid in the vertical direction Cylindrical member constituting the pool part 4: Effective area part of resistance generation 41: Hanging wall plate (inner wall steel plate)
5: Viscous fluid 50: Effective area portion facing outer wall steel plate and inner wall steel plate 51: High viscosity viscous fluid generating resistance force 52H: Low viscosity fluid filled in upper liquid reservoir 33 V: Vertical Low-viscosity viscous fluid filled in the directional liquid reservoir 38: Mounting bolt for fixing the wall

Claims (6)

A wall member that connects the upper and lower floors of buildings and other structures,
A plurality of rising wall plates fixed to the floor slab of the lower floor or a beam or a connecting member on the beam are raised in parallel, and each end of the plurality of rising wall plates is closed to form a box-shaped wall body And inserting one or more hanging wall plates fixed to the upper floor slab or beam or the connecting member between the rising wall plates in the box-shaped wall, and the rising wall plate and the hanging wall In the viscous vibration control wall where the gap between the plates is filled with viscous fluid,
The plane ends of the plurality of rising wall plate constituting the Ryogaiheki surface, the box-shaped wall have a greater width than the central part the width (length in the thickness direction) of, and the rising wall plate It has a vertical liquid reservoir that extends in the vertical direction along both ends ,
The length of the hanging wall plate fixed to the upper floor side is made longer than the length of the rising wall plate fixed to the lower floor side so that both ends of the hanging wall plate are placed in the vertical direction. A viscous damping wall characterized by extending into the pool . In the viscous damping wall according to claim 1,
The vertical liquid reservoirs provided at both ends of the outer wall surface have a rectangular planar shape and are provided in parallel to the axial direction of the plane of the rising wall plate. Earthquake wall. In the viscous damping wall according to claim 1,
The vertical liquid reservoirs provided at both ends of the outer wall surface have a rectangular planar shape, and the top of the planar surface is provided at the outermost end of the central axis of the plane of the rising wall plate. Viscous damping wall characterized by In the viscous damping wall according to claim 1,
The viscous damping wall according to claim 1, wherein the vertical liquid reservoirs provided at both ends of the outer wall surface have a circular or elliptical planar shape . In the viscous damping wall according to any one of claims 1 to 4,
A viscous damping wall having three rising walls and two hanging walls,
A central rising wall body among the three rising wall bodies is connected to and integrated with the box-shaped wall body in the vertical liquid reservoir,
A viscous vibration control wall having a plurality of holes in the vertical direction in the liquid reservoir portion in the vertical direction . In the viscous damping wall according to any one of claims 1 to 5,
Viscosity lower in viscosity than the viscous fluid sealed in the overlapping portion facing the rising wall plate and the hanging wall plate in the vertical liquid pool portion and the horizontal liquid pool portion above the rising wall plate. Viscous damping wall characterized by enclosing fluid .