Porous viscous damping wall

Abstract

The present invention relates to the technical field of damping walls, and in particular to a porous viscous damping wall. It comprises: an upper connecting plate; an upper box body, the upper box body is fixedly connected to the bottom of the upper connecting plate, a closed cavity is formed in the upper box body, the cavity is filled with a viscous fluid, a first guide shaft is arranged in the transverse direction of the upper box body, the first guide shaft transversely penetrates the accommodating cavity, and the first guide shaft is sealed and connected to the upper box body, a first steel plate is also arranged in the upper box body, the first steel plate is perpendicular to the first guide shaft, the first guide shaft penetrates the first steel plate, the first steel plate is fixedly connected to the first guide shaft, a plurality of first damping holes are arranged on the first steel plate, a plurality of first damping holes are opened along the axial direction of the first guide shaft, and a plurality of first damping holes penetrate the first steel plate; a lower box body, the lower box body is sleeved on the outside of the upper box body, and the two ends of the first guide shaft are respectively fixedly connected to the two side walls of the lower box body. The porous viscous damping wall of the present invention can provide a greater damping force and improve the stability of the damping wall.

Description

Technical Field

[0001] The invention relates to the technical field of damping walls, and in particular to a porous viscous damping wall. Background Art

[0002] Energy dissipation and vibration reduction technology has been widely used and studied in earthquake-resistant engineering. As a velocity-dependent damper, viscous damping wall has the advantages of easy installation, high energy efficiency, small thickness and no impact on the beauty of the building, can be used for earthquake resistance, wind resistance, maintenance-free, etc., and has been widely used in the field of structural vibration reduction.

[0003] Traditional viscous damping walls, such as Figure 1 and Figure 2 As shown, it is composed of a steel box 2' fixed to the building floor beam and an inner steel plate 1' fixed to the upper beam. High viscosity viscous damping material is poured into the steel box 2'. When the floor undergoes relative deformation or speed, the inner steel plate 1' slides in the steel box 2' filled with viscous damping material, and the shear deformation of the viscous material generates a damping force, dissipating the energy input into the structure by earthquake or wind load, thereby reducing the dynamic response of the main structure. However, traditional viscous damping walls have some defects:

[0004] 1. The traditional viscous damping wall is installed between the upper and lower floors, and adopts a plug-in structure, that is, the inner steel plate 1' is inserted into the steel box 2' containing the viscous fluid, and the inner steel plate 1' is horizontally arranged in the steel box 2'. Therefore, the displacement of the inner steel plate 1' in the steel box 2' is limited, which limits the energy consumption of the damping wall. When there is a large earthquake or wind load input structure, the traditional inner steel plate 1' shears the viscous fluid and is not enough to dissipate the external force. The inner steel plate 1' may be sheared and deformed or even unstable, resulting in a reduction in the energy consumption capacity of the damping wall, and even damage to the damping wall, so that the damping wall loses its ability to absorb shock and consume energy, endangering the safety of the building;

[0005] 2. The relative movement speed between the steel plate 1' and the steel box 2' in the traditional damping wall is limited. In order to increase the damping force, the area of ​​the inner steel plate 1' needs to be increased, which is limited by the installation space in practical applications;

[0006] 3. The traditional viscous damping wall generally adopts a plug-in structure, that is, the inner steel plate 1' is inserted into the steel box 2' containing the viscous fluid. The steel box 2' is not sealed, and the viscous fluid works under normal pressure. Therefore, the damping force generated is small;

[0007] 4. The viscous damping material filled inside the traditional damping wall is a high molecular polymer fluid material with viscoelastic effect. When the inner steel plate 1' slides in the steel box 2', the damping material will be squeezed. After the damping material is squeezed to both ends by the inner steel plate 1', it cannot flow back in time, which will cause the damping material at the end to bulge and accumulate, destroying the bonding surface between the inner steel plate 1' and the damping material, and weakening the energy dissipation capacity of the damping wall. Summary of the invention

[0008] The technical problem to be solved by the present invention is to solve the technical problem that the damping force generated by the damping wall in the prior art is small and the energy consumption is limited. The present invention provides a porous viscous damping wall, the main plane of the upper box body of the porous viscous damping wall is arranged along the longitudinal direction of the box, and damping holes are opened on the first steel plate and the second steel plate according to the demand, and the damping material adopts methyl silicone oil with good fluidity, which can greatly improve the damping force, enhance the energy consumption capacity, and improve the stability and life of the damping wall.

[0009] The technical solution adopted by the present invention to solve the technical problem is: a porous viscous damping wall, comprising:

[0010] An upper connecting plate, the upper connecting plate being fixedly connected to the bottom of the upper floor beam;

[0011] An upper box body, the upper box body is fixedly connected to the bottom of the upper connecting plate, a closed accommodating cavity is formed in the upper box body, the accommodating cavity is filled with a viscous fluid, a first guide shaft is arranged in the transverse direction of the upper box body, the first guide shaft transversely penetrates the accommodating cavity, and the first guide shaft is sealed and connected to the upper box body, a first steel plate is also arranged in the upper box body, the first steel plate is perpendicular to the first guide shaft, the first guide shaft penetrates the first steel plate, the first steel plate is fixedly connected to the first guide shaft, a plurality of first damping holes are arranged on the first steel plate, the plurality of first damping holes are opened along the axial direction of the first guide shaft, and the plurality of first damping holes penetrate the first steel plate;

[0012] A lower box body, the bottom of which is fixedly connected to the top of the lower floor beam, an opening is provided on the top of the lower box body, the lower box body is sleeved on the outside of the upper box body through the opening, and the two ends of the first guide shaft are respectively fixedly connected to the two side walls of the lower box body.

[0013] In order to further increase the damping force, a second guide shaft is also provided on the upper box body. The second guide shaft is parallel to the first guide shaft and is arranged at intervals. The second guide shaft transversely passes through the accommodating cavity. The second guide shaft is sealed and connected to the upper box body, and the second guide shaft passes through the first steel plate. The second guide shaft is fixedly connected to the first steel plate, and the two ends of the second guide shaft are respectively fixedly connected to the two side walls of the lower box body.

[0014] In order to further increase the damping force, a second steel plate is also arranged in the upper box body, the second steel plate and the first steel plate are parallel and spaced apart, the first guide shaft and the second guide shaft both pass through the second steel plate, the first guide shaft and the second guide shaft are both fixedly connected to the second steel plate, a number of second damping holes are arranged on the second steel plate, the number of second damping holes are opened along the axial direction of the first guide shaft, and the number of second damping holes pass through the second steel plate.

[0015] In order to facilitate the positioning of the first steel plate and the second steel plate, a first positioning sleeve is arranged between the first steel plate and the second steel plate, one end of the first positioning sleeve is fixedly connected to the first steel plate, the other end of the first positioning sleeve is fixedly connected to the second steel plate, and the first positioning sleeve is sleeved on the outer periphery of the first guide shaft; a second positioning sleeve is also arranged between the first steel plate and the second steel plate, one end of the second positioning sleeve is connected to the first steel plate, the other end of the second positioning sleeve is connected to the second steel plate, and the second positioning sleeve is sleeved on the outer periphery of the second guide shaft.

[0016] The first steel plate and the second steel plate are both fixedly connected to the first guide shaft by a circular ring key, and the first steel plate and the second steel plate are both fixedly connected to the second guide shaft by a circular ring key; the circular ring key is composed of two half-ring keys, and the outer peripheral walls of the first guide shaft and the second guide shaft are both provided with a first annular groove, and the first steel plate and the second steel plate are both provided with a corresponding second annular groove, and the first annular groove and the corresponding second annular groove cooperate to form an installation space, and the circular ring key is arranged in the installation space. The circular ring key composed of two half-ring keys is clamped between the first steel plate and the first guide shaft, which can not only firmly connect the first steel plate and the first guide shaft, but also facilitate installation and disassembly. The circular ring key composed of two half-ring keys is clamped between the second steel plate and the first guide shaft, which can not only firmly connect the first steel plate and the first guide shaft, but also facilitate installation and disassembly.

[0017] Specifically, the first guide shaft and the second guide shaft are both movably connected to the upper box body through a guide sleeve, the guide sleeve includes a flange and a connecting pipe, the connecting pipe is fixed to the lower end surface of the connecting flange, the first guide shaft and the second guide shaft are both inserted into the corresponding connecting pipe, and the lower end surface of the flange is against the side wall of the upper box body.

[0018] Specifically, corresponding threaded connection holes are opened on the flange and the upper box body along the axial direction of the first guide shaft, and fixing bolts are threadedly connected in the threaded connection holes.

[0019] In order to ensure the sealing between the first guide shaft and the corresponding connecting pipe, a shaft oil seal is provided between the first guide shaft and the corresponding connecting pipe, and a shaft oil seal is provided between the second guide shaft and the corresponding connecting pipe. The shaft oil seal is provided at one end away from the corresponding flange.

[0020] In order to facilitate the movement of the first guide shaft and the second guide shaft along their axial direction, a metal sliding bearing is arranged between the first guide shaft and the corresponding connecting pipe, and a metal sliding bearing is arranged between the second guide shaft and the corresponding connecting pipe. The metal sliding bearing is arranged at one end close to the corresponding flange.

[0021] Preferably, the viscous fluid is methyl silicone oil.

[0022] In order to ensure the sealing of the upper box body, an O-ring is provided between the upper box body and the corresponding connecting pipe.

[0023] The porous viscous damping wall of the present invention has the following specific effects:

[0024] 1. The main planes of the first steel plate and the second steel plate (equivalent to the inner steel plate of the prior art) of the present invention are arranged along the longitudinal direction of the steel box body. The first steel plate and the second steel plate have a large movable area in the steel box body, which greatly improves the damping force. When responding to a large earthquake or wind load input, the first steel plate and the second steel plate can move greatly in the steel box body, generate a large damping force to dissipate the large earthquake or wind load, and effectively avoid the possibility of shear deformation or even instability of the first steel plate and the second steel plate, thereby avoiding damage to the damping wall and endangering the safety of the building; and by providing damping holes on both the first steel plate and the second steel plate, the possibility of shear deformation of the first steel plate and the second steel plate is greatly reduced, the energy dissipation capacity of the damping wall is greatly improved, and the stability of the damping wall is improved;

[0025] 2. The porous viscous damping wall of the present application has a large movable area in the steel box after the main planes of the first steel plate and the second steel plate are arranged longitudinally along the steel box, which greatly improves the damping force and can generate a large damping force with a small size, which is beneficial to reduce the occupied area and reduce the production cost. It also has a simple structure and is easy to install the workpiece;

[0026] 3. The viscous fluid of the porous viscous damping wall of the present application is arranged in the upper box body. Since the upper box body is sealed, the viscous damping liquid is squeezed by the first steel plate and the second steel plate, and the pressure in the cavity increases, so the damping force generated is also relatively large;

[0027] 4. The porous viscous damping wall of the present application adopts methyl silicone oil with good fluidity as the viscous fluid, which solves the problem that the damping material of the traditional viscous damping wall cannot flow back in time during operation, and improves the energy dissipation capacity and life of the damping wall; at the same time, the viscous fluid adopts methyl silicone oil, and a damper without stiffness, temperature correlation, and frequency correlation can be obtained;

[0028] 5. The void-type viscous damper of the present application has the advantages of high damping force design accuracy and the ability to achieve highly reliable seismic design. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Figure 1 It is a schematic diagram of a traditional damping wall;

[0031] Figure 2 is a side cross-sectional view of a conventional damping wall;

[0032] Figure 3 Schematic diagram of the three-dimensional structure of the porous viscous damping wall of the present invention;

[0033] Figure 4 1 is a schematic structural diagram of a first embodiment of a porous viscous damping wall of the present invention;

[0034] Figure 5 1 is a schematic structural diagram of a second embodiment of the porous viscous damping wall of the present invention;

[0035] Figure 6 yes Figure 5 A is an enlarged view;

[0036] Figure 7 It is a schematic diagram of the cooperation between the half ring key, the first steel plate and the first guide shaft of the porous viscous damping wall of the present invention;

[0037] Figure 8 is the hysteresis curve of the conventional damping wall of the present invention;

[0038] Fig. 9 It is the hysteresis curve of the porous viscous damping wall of the present invention.

[0039] Reference numerals:

[0040] 1', inner steel plate; 2', steel box; 10, upper connecting plate; 20, upper box; 21, accommodating cavity; 22, viscous fluid; 23, first guide shaft; 231, first annular groove; 232, half ring key; 24, first steel plate; 241, second annular groove; 25, first damping hole; 33, second guide shaft; 34, second steel plate; 35, second damping hole; 41, first positioning sleeve; 42, second positioning sleeve; 51, guide sleeve; 511, flange; 512, connecting pipe; 514, bolt; 61, shaft oil seal; 62, metal sliding bearing; 63, O-ring; 70, lower box; 71, opening. DETAILED DESCRIPTION

[0041] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0042] like Figure 3 and Figure 4 FIG. 1 is a first embodiment of the present invention, a porous viscous damping wall, comprising:

[0043] An upper connecting plate 10, the upper connecting plate 10 is fixedly connected to the bottom of the upper floor beam;

[0044] The upper box body 20 is fixedly connected to the bottom of the upper connecting plate 10 . A sealed receiving cavity 21 is formed in the upper box body 20 . The receiving cavity 21 is filled with a viscous fluid 22 , which is methyl silicone oil.

[0045] A first guide shaft 23 is provided in the transverse direction of the upper box body 20, the first guide shaft 23 transversely penetrates the accommodating cavity 21, and the first guide shaft 23 is sealed and connected to the upper box body 20, and a first steel plate 24 is also provided in the upper box body 20, the first steel plate 24 is perpendicular to the first guide shaft 23, the first guide shaft 23 penetrates the first steel plate 24, the first steel plate 24 is fixedly connected to the first guide shaft 23, and a plurality of first damping holes 25 are provided on the first steel plate 24, the plurality of first damping holes 25 are opened along the axial direction of the first guide shaft 23, and the plurality of first damping holes 25 penetrate the first steel plate 24;

[0046] The bottom of the lower box body 70 is fixedly connected to the top of the lower floor beam, and an opening 71 is provided at the top of the lower box body 70. The lower box body 70 is sleeved on the outside of the upper box body 20 through the opening 71, and the two ends of the first guide shaft 23 are fixedly connected to the two side walls of the lower box body 70 respectively.

[0047] The working principle of the first embodiment of the present invention is as follows:

[0048] When an earthquake or wind blows, the upper and lower floors of the damping wall structure will have a relative motion, that is, there is a relative speed between the upper and lower floors, and the upper connecting plate fixed to the upper floor drives the steel box to do reciprocating motion. The viscous fluid in the steel box flows from one side of the first steel plate to the other side through the damping hole, and a pressure difference will be generated in the cavities on both sides of the first steel plate. In the process of the viscous fluid repeatedly flowing through the damping hole, the viscous fluid generates internal friction to consume the mechanical energy of the external input structure and reduce the earthquake or wind-induced response of the structure.

[0049] like Figures 5 to 7 FIG. 1 is a second embodiment of the present invention, a porous viscous damping wall, which, compared with the first embodiment, further comprises:

[0050] A second guide shaft 33 is also provided on the upper box body 20. The second guide shaft 33 and the first guide shaft 23 are parallel and spaced apart. The second guide shaft 33 transversely penetrates the accommodating cavity 21. The second guide shaft 33 is sealedly connected to the upper box body 20, and the second guide shaft 33 penetrates the first steel plate 24. The second guide shaft 33 is fixedly connected to the first steel plate 24, and both ends of the second guide shaft 33 are respectively fixedly connected to the two side walls of the lower box body 70.

[0051] A second steel plate 34 is also provided in the upper box body 20. The second steel plate 34 and the first steel plate 24 are parallel and spaced apart. The first guide shaft 23 and the second guide shaft 33 both pass through the second steel plate 34. The first guide shaft 23 and the second guide shaft 33 are both fixedly connected to the second steel plate 34. A plurality of second damping holes 35 are provided on the second steel plate 34. The plurality of second damping holes 35 are opened along the axial direction of the first guide shaft 23, and the plurality of second damping holes 35 pass through the second steel plate 34.

[0052] A first positioning sleeve 41 is provided between the first steel plate 24 and the second steel plate 34, one end of the first positioning sleeve 41 is fixedly connected to the first steel plate 24, the other end of the first positioning sleeve 41 is fixedly connected to the second steel plate 34, and the first positioning sleeve 41 is sleeved on the outer periphery of the first guide shaft 23; a second positioning sleeve 42 is also provided between the first steel plate 24 and the second steel plate 34, one end of the second positioning sleeve 42 is connected to the first steel plate 24, the other end of the second positioning sleeve 42 is connected to the second steel plate 34, and the second positioning sleeve 42 is sleeved on the outer periphery of the second guide shaft 33.

[0053] like Figure 5 and Figure 7As shown, the first steel plate 24 and the second steel plate 34 are both fixedly connected to the first guide shaft 23 through a circular ring key, and the first steel plate 24 and the second steel plate 34 are both fixedly connected to the second guide shaft 33 through a circular ring key; the circular ring key is composed of two half-ring keys 232, and the outer peripheral wall of the first guide shaft 23 and the second guide shaft 33 is provided with an upper first annular groove 231, and the first steel plate 24 and the second steel plate 34 are respectively provided with a second annular groove 241, and the first annular groove 231 and the corresponding second annular groove 241 cooperate to form an installation space, and the circular ring key is arranged in the installation space. Figure 1 As shown, the inner diameter of the ring key is d0, the outer diameter of the ring key is d2, the diameter of the first guide shaft 23 is d1, wherein d2>d1>d0, the groove depth of the first guide shaft 23 is d1-d0; the groove depth of the first steel plate 24 is d2-d1.

[0054] like Figure 6 As shown, the first guide shaft 23 and the second guide shaft 33 are both movably connected to the upper box body 20 through a guide sleeve 51, the guide sleeve 51 includes a flange 511 and a connecting pipe 512, the connecting pipe 512 is fixedly connected to the lower end surface of the flange 511, the first guide shaft 23 and the second guide shaft 33 are both inserted into the corresponding connecting pipe 512, and the lower end surface of the flange 511 is against the side wall of the upper box body 20. Corresponding threaded connection holes are opened on the flange 511 and the upper box body 20 along the axial direction of the first guide shaft 23, and fixing bolts 514 are threadedly connected in the threaded connection holes.

[0055] A shaft oil seal 61 is provided between the first guide shaft 23 and the corresponding connecting pipe 512, and a shaft oil seal 61 is provided between the second guide shaft 33 and the corresponding connecting pipe 512, and the shaft oil seal 61 is provided at an end away from the corresponding flange 511; a metal sliding bearing 62 is provided between the first guide shaft 23 and the corresponding connecting pipe 512, and a metal sliding bearing 62 is provided between the second guide shaft 33 and the corresponding connecting pipe 512, and the metal sliding bearing 62 is provided at an end close to the corresponding flange 511. An O-ring 63 is provided between the upper housing 20 and the corresponding connecting pipe 512.

[0056] When the porous viscous damping wall of the present invention is in working state, under the action of earthquake or wind, the upper and lower floors of the damping wall structure generate relative movement, that is, there is a relative speed between the upper and lower floors, and the upper connecting plate fixed to the upper floor drives the steel box to reciprocate. The viscous fluid in the steel box flows from one side of the first steel plate and the second steel plate to the other side through the damping hole, and a pressure difference is generated in the cavities on both sides of the first steel plate and the second steel plate. In the process of the viscous fluid repeatedly flowing through the damping hole, the viscous fluid generates internal friction to consume the mechanical energy of the external input structure and reduce the earthquake or wind-induced response of the structure.

[0057] Comparative test of performance parameters of the porous viscous damping wall of Example 2 of the present application and the traditional damping wall:

[0058] 1. Maximum damping force

[0059] Test method: The sinusoidal excitation method is used. The input displacement u=u0sin(ωt) that changes according to the sinusoidal wave law is used to apply a sinusoidal force with a fundamental frequency of f1 and a displacement amplitude of u0 to the damper. Five cycles are performed continuously, and the maximum damping force corresponding to the third cycle is recorded as the measured value and recorded in Table 1.

[0060] Judgment basis: The actual measured value of the maximum damping force of the damper should be within ±15% of the product design value. The change in the damping force value of the fifth circle relative to the first circle should not exceed 15%.

[0061] 2. Damping coefficient and damping index

[0062] Test method: The sinusoidal excitation method is adopted, and the input displacement u=u0sin(ωt) that changes according to the sinusoidal wave law is used to control the loading system of the testing machine; the damper is applied with a fundamental frequency of f1, and the input displacement amplitudes are 0.1u0, 0.2u0, 0.5u0, 0.7u0, 1.0u0, and 1.2u0, respectively, for 5 consecutive cycles. The damping force-displacement hysteresis curve is drawn for each cycle, and the damping coefficient and damping index corresponding to the third cycle under each working condition are calculated and recorded as the measured values ​​in Table 1.

[0063] Judgment basis: Damping index α: the measured value is within ±15% of the design value;

[0064] Damping coefficient C: The measured value is within ±15% of the design value;

[0065] Hysteresis curve: smooth and full without abnormality; the measured value deviation of the hysteresis curve envelope area is ≤±15%. The hysteresis curve of the traditional damper is as follows Figure 8 As shown, the hysteresis curve of this application is as follows Fig. 9 As shown, the traditional hysteresis curve is elliptical, and the damping force generated by the traditional hysteresis curve in the lateral and longitudinal directions is smaller than the damping force generated by the porous viscous damper of the present application in the lateral and longitudinal directions. The hysteresis curve of the present application is square, the hysteresis curve is smooth and full, and the damping force generated is large.

[0066]

[0067] Table 1

[0068] As shown in Table 1, for key parameters, under the same size conditions, after experimental comparison, the porous damping wall can provide a larger damping force, damping coefficient, and a smaller damping index, as well as a more stable hysteresis curve, which can achieve better energy dissipation capacity.

[0069] In summary, the beneficial effects of the porous viscous damping wall of the present application are as follows:

[0070] 1. The main planes of the first steel plate 24 and the second steel plate 34 (equivalent to the inner steel plate 1' of the prior art) of the present invention are arranged longitudinally along the upper box body 20. The first steel plate 24 and the second steel plate 34 have a large movable area in the upper box body 20, which greatly improves the damping force. When responding to a large earthquake or wind load input, the first steel plate 24 and the second steel plate 34 can move greatly in the upper box body 20, generate a large damping force to dissipate the large earthquake or wind load, and effectively avoid the possibility of shear deformation or even instability of the first steel plate 24 and the second steel plate 34, thereby avoiding damage to the damping wall and endangering the safety of the building; and by providing damping holes on both the first steel plate 24 and the second steel plate 34, the possibility of shear deformation of the first steel plate 24 and the second steel plate 34 is greatly reduced, and the energy dissipation capacity of the damping wall is greatly improved, and the stability of the damping wall is improved;

[0071] 2. The porous viscous damping wall of the present application, after the main planes of the first steel plate 24 and the second steel plate 34 are arranged longitudinally along the upper box body 20, the first steel plate 24 and the second steel plate 34 have a large movable area in the upper box body 20, which greatly improves the damping force, and can generate a larger damping force with a smaller size, which is beneficial to reducing the occupied area and reducing the production cost, and the structure is simple, and it is easy to install the workpiece;

[0072] 3. The viscous fluid 22 of the porous viscous damping wall of the present application is arranged in the upper box body 20. Since the upper box body 20 is sealed, the viscous damping liquid is squeezed by the first steel plate 24 and the second steel plate 34, and the pressure in the cavity increases. Therefore, the damping force generated is also relatively large.

[0073] 4. The porous viscous damping wall of the present application uses methyl silicone oil with good fluidity as the viscous fluid 22, which solves the problem that the damping material of the traditional viscous damping wall cannot flow back in time during operation, and improves the energy dissipation capacity and life of the damping wall; at the same time, the viscous fluid 22 uses methyl silicone oil, which can obtain a damper without stiffness, temperature correlation, and frequency correlation;

[0074] 5. The void-type viscous damper of the present application has the advantages of high damping force design accuracy and the ability to achieve highly reliable seismic design.

[0075] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A porous viscous damping wall, characterized in that: include: An upper connecting plate (10), the upper connecting plate (10) being fixedly connected to the bottom of the upper floor beam; An upper box body (20), the upper box body (20) is fixedly connected to the bottom of the upper connecting plate (10), a sealed accommodating cavity (21) is formed in the upper box body (20), the accommodating cavity (21) is filled with a viscous fluid (22), a first guide shaft (23) is arranged in the lateral direction of the upper box body (20), the first guide shaft (23) passes through the accommodating cavity (21) in the lateral direction, and the first guide shaft (23) is sealedly connected to the upper box body (20), and the upper box body (20) A first steel plate (24) is also provided inside, the first steel plate (24) is perpendicular to the first guide shaft (23), the first guide shaft (23) passes through the first steel plate (24), the first steel plate (24) is fixedly connected to the first guide shaft (23), a plurality of first damping holes (25) are provided on the first steel plate (24), the plurality of first damping holes (25) are opened along the axial direction of the first guide shaft (23), and the plurality of first damping holes (25) pass through the first steel plate (24); A lower box body (70), the bottom of the lower box body (70) is fixedly connected to the top of the lower floor beam, the top of the lower box body (70) is provided with an opening (71), the lower box body (70) is sleeved on the outside of the upper box body (20) through the opening (71), and the two ends of the first guide shaft (23) are respectively fixedly connected to the two side walls of the lower box body (70); The upper box body (20) is also provided with a second guide shaft (33), the second guide shaft (33) and the first guide shaft (23) are parallel and spaced apart, the second guide shaft (33) transversely penetrates the accommodating cavity (21), the second guide shaft (33) is sealedly connected to the upper box body (20), and the second guide shaft (33) penetrates the first steel plate (24), the second guide shaft (33) is fixedly connected to the first steel plate (24), and the two ends of the second guide shaft (33) are respectively fixedly connected to the two side walls of the lower box body (70); A second steel plate (34) is also provided in the upper box body (20); the second steel plate (34) and the first steel plate (24) are arranged in parallel and at intervals; the first guide shaft (23) and the second guide shaft (33) both pass through the second steel plate (34); the first guide shaft (23) and the second guide shaft (33) are both fixedly connected to the second steel plate (34); a plurality of second damping holes (35) are provided on the second steel plate (34); the plurality of second damping holes (35) are opened along the axial direction of the first guide shaft (23), and the plurality of second damping holes (35) pass through the second steel plate (34); The first guide shaft (23) and the second guide shaft (33) are both movably connected to the upper box body (20) through a guide sleeve (51); the guide sleeve (51) comprises a flange (511) and a connecting pipe (512); the connecting pipe (512) is fixed to the lower end surface of the flange (511); the first guide shaft (23) and the second guide shaft (33) are both inserted into the corresponding connecting pipe (512); the lower end surface of the flange (511) is against the side wall of the upper box body (20).

2. The porous viscous damping wall according to claim 1, characterized in that: A first positioning sleeve (41) is provided between the first steel plate (24) and the second steel plate (34), one end of the first positioning sleeve (41) is fixedly connected to the first steel plate (24), the other end of the first positioning sleeve (41) is fixedly connected to the second steel plate (34), and the first positioning sleeve (41) is sleeved on the outer circumference of the first guide shaft (23); a second positioning sleeve (42) is also provided between the first steel plate (24) and the second steel plate (34), one end of the second positioning sleeve (42) is connected to the first steel plate (24), the other end of the second positioning sleeve (42) is connected to the second steel plate (34), and the second positioning sleeve (42) is sleeved on the outer circumference of the second guide shaft (33).

3. The porous viscous damping wall according to claim 1, characterized in that: The first steel plate (24) and the second steel plate (34) are both fixedly connected to the first guide shaft (23) via a circular ring key, and the first steel plate (24) and the second steel plate (34) are both fixedly connected to the second guide shaft (33) via a circular ring key; the circular ring key is composed of two half-ring keys (232); the outer peripheral walls of the first guide shaft (23) and the second guide shaft (33) are both provided with an upper first annular groove (231); the first steel plate (24) and the second steel plate (34) are both correspondingly provided with a second annular groove (241); the first annular groove (231) and the corresponding second annular groove (241) cooperate to form an installation space, and the circular ring key is arranged in the installation space.

4. The porous viscous damping wall according to claim 1, characterized in that: Corresponding threaded connection holes are provided on the flange (511) and the upper box body (20) along the axial direction of the first guide shaft (23), and fixing bolts (514) are threadedly connected in the threaded connection holes.

5. The porous viscous damping wall according to claim 1, characterized in that: A shaft oil seal (61) is provided between the first guide shaft (23) and the corresponding connecting pipe (512), and a shaft oil seal (61) is provided between the second guide shaft (33) and the corresponding connecting pipe (512). The shaft oil seal (61) is provided at an end away from the corresponding flange (511).

6. The porous viscous damping wall according to claim 4, characterized in that: A metal sliding bearing (62) is arranged between the first guide shaft (23) and the corresponding connecting pipe (512), and a metal sliding bearing (62) is arranged between the second guide shaft (33) and the corresponding connecting pipe (512), and the metal sliding bearing (62) is arranged at one end close to the corresponding flange (511).

7. The porous viscous damping wall according to claim 1, characterized in that: The viscous fluid (22) is methyl silicone oil.

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