A wall frame based on V-shaped damping bracing and its construction method

Abstract

This invention provides a wall frame based on V-shaped damping supports and its construction method. The wall frame includes a bottom beam, a left column, a top beam, and a right column connected end to end. A V-shaped damping support device is installed inside the frame. The bottom of the V-shaped damping support device is fixed to the bottom beam, and the upper end of the V-shaped damping support device is connected to the node between the top beam (24) and the left column, and the node between the top beam and the right column, respectively. The V-shaped damping support device of this invention has a small self-weight and can eliminate the connection gap between the damper and the support system. It can be installed in frame structures or inside reinforced concrete shear walls.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy dissipation and seismic mitigation of building structures, in particular to a wall frame based on V-shaped damping support and a construction method thereof. BACKGROUND

[0002] In the field of energy dissipation and seismic mitigation of building engineering, it is not a new technology to increase the structural damping, absorb and consume the vibration energy of the incoming structure by installing dampers in the engineering structure, and reduce the dynamic response of the structure. Due to the simple structure, economical material and good damping effect of the damper, it has been widely used in actual structure control. The dampers for building engineering can be generally summarized as follows: metal yielding damper, lead damper, friction damper, viscoelastic damper, viscous fluid damper, electric induction type energy dissipation device, electromagnetic fluid damper, composite damper, etc.

[0003] At present, the installation methods of dampers in building structures mainly include diagonal support, herringbone support, scissor type support and the like. These installation methods have the following disadvantages: (1) in order to reduce the elastic deformation and increase the relative displacement of the two ends of the damper, the damper support system needs to have large stiffness, so the volume and self weight are large, which is a serious waste; (2) the various dampers and support systems are usually connected by pin shafts and bearings, and this connection method inevitably has a gap, which further reduces the relative displacement of the two ends of the damper, thereby reducing the energy dissipation and seismic mitigation effect of the damper; (3) the existing damper support device can only be used in frame structures, and cannot be installed in reinforced concrete shear wall walls. SUMMARY

[0004] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a wall frame based on V-shaped damping support and a construction method thereof, which does not need a large support system, saves materials and has small self weight, and can eliminate the connection gap between the damper and the support system. The device can not only be set in frame structures, but also can be set in reinforced concrete shear wall walls. At the same time, a simple and reliable construction method is provided for the realization of the damper support device for building engineering.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] The application provides a wall frame based on V-shaped damping support, which comprises straight anchor bars, a bottom beam, a left column, a right column, a top beam and a rectangular anchor plate, the upper end of the left column is fixed with the left end of the top beam, the lower end of the left column is fixed with the left end of the bottom beam, the upper end of the right column is fixed with the right end of the top beam, and the lower end of the right column is fixed with the right end of the bottom beam; the rectangular anchor plate is anchored together through the straight anchor bars and the bottom beam; two V-shaped support steel plates arranged in parallel in front and back are arranged on the rectangular anchor plate, the top of the V-shaped support steel plate is provided with dampers on both sides, the V-shaped support steel plate is connected with the dampers through connecting flanges, a circular hole is arranged on the symmetry axis of the two V-shaped support steel plates arranged in parallel in front and back, the circular hole of the V-shaped support steel plate in front is arranged in correspondence with the circular hole of the V-shaped support steel plate behind, a cylindrical fixed pulley shaft is arranged between the circular hole of the V-shaped support steel plate in front and the circular hole of the V-shaped support steel plate behind, a fixed pulley is arranged on the fixed pulley shaft, the fixed pulley can rotate around the fixed pulley shaft, a high-strength steel wire rope is arranged in the sliding groove of the fixed pulley, one end of the high-strength steel wire rope is connected with the piston rod at the lower end of the left damper, the other end of the high-strength steel wire rope is connected with the piston rod at the lower end of the right damper, the piston rod at the upper end of the left damper and the piston rod at the upper end of the right damper are both provided with steel strands, the steel strands are anchored on the joint of the beam and the column through the anchor plate; a cylindrical piston is arranged between the piston rod at the upper end of the left damper and the piston rod at the lower end of the left damper and between the piston rod at the upper end of the right damper and the piston rod at the lower end of the right damper, a cylindrical cylinder is arranged outside the cylindrical piston, an annular gap is left between the cylindrical piston and the cylindrical cylinder, the lower end of the cylindrical cylinder is fixed with the connecting flange, the upper end of the cylindrical cylinder is provided with a circular cover plate, a sealed cavity is formed between the inner surface of the cylindrical cylinder, the piston rod and the outer surface of the cylindrical piston, the connecting flange and the circular cover plate, and the sealed cavity is filled with energy dissipation material.

[0007] According to the damper support device for building engineering, the junction of the upper end of the left column and the left end of the top beam is node A, the junction of the right column and the left end of the top beam is node B, the upper end of the left steel strand is anchored on node A through the anchor plate, and the upper end of the right steel strand is anchored on node B through the anchor plate.

[0008] According to the damper support device for building engineering, two V-shaped support steel plates arranged in parallel in front and back are welded on the rectangular anchor plate.

[0009] According to the damper support device for building engineering, the energy dissipation material can be viscoelastic material, magnetorheological fluid, electrorheological fluid, lead metal or high-viscosity hydraulic oil.

[0010] According to the damper support device for building engineering, the steel strands need to be symmetrically applied with equal pre-stress.

[0011] According to the damper support device for construction engineering, the bottom beam is a bottom concrete beam in the form of a shear wall, the top beam is a top concrete beam in the form of a shear wall, the left side column is a right side concrete column in the form of a shear wall, the right side column is a right side concrete column in the form of a shear wall, and the periphery of the upper end of the steel strand and the piston rod of the damper is provided with a metal bellows.

[0012] According to the damper support device for construction engineering, the bottom beam is a bottom frame concrete beam, the top beam is a top frame concrete beam, the left side column is a left side frame concrete column, and the right side column is a right side frame concrete column.

[0013] According to the damper support device for construction engineering, the bottom beam is a bottom steel frame beam, the top beam is a top steel frame beam, the left side column is a left side steel frame column, and the right side column is a right side steel frame column.

[0014] The steel strand needs to be symmetrically prestressed at the A point and the B point, so as to eliminate most of the elastic deformation of the steel strand and the steel wire rope, and eliminate the connection gap between the fixed pulley and the fixed pulley shaft.

[0015] The damper can be a viscous damper, a viscoelastic damper, a magneto-rheological damper, a lead extrusion damper, etc., and includes a cylindrical piston rod, a cylindrical piston, a connecting flange, a cylindrical cylinder, a circular cover plate and energy dissipation material.

[0016] If the damper support device is used in a frame structure, the metal bellows is not needed, and if the damper support device is used in a reinforced concrete shear wall, the metal bellows is needed.

[0017] The application also provides a construction method of a wall frame based on the V-shaped damper support, which comprises the following steps:

[0018] Step one: the straight anchor bar (1) is welded on the rectangular anchor plate (2), and the straight anchor bar and the rectangular anchor plate are pre-buried in the bottom beam (21); then, the V-shaped support steel plate (3) provided with a circular hole is welded on the mounting position of the rectangular anchor plate (2);

[0019] Step two: the damper is assembled, the connecting flange (33) below the cylindrical cylinder (34) of the damper is first installed; then, the cylindrical piston (32) and the piston rod (31) of the damper are connected together and are stuffed into the cylindrical cylinder from above the cylindrical cylinder (34), so that the piston rod (31) penetrates out of the middle hole of the connecting flange (33); finally, the energy dissipation material (36) is filled in the cylindrical cylinder, and the circular cover plate (35) above the cylindrical cylinder is installed;

[0020] Step three: install the damper, first cut the high-strength steel wire rope (6) according to the design length, connect the two damper lower end piston rod (31) with high-strength steel wire rope (6); Then, place the two dampers on the top of the V-shaped support steel plate (3) on both sides, and fix the connecting flange (33) of the damper with the top of the V-shaped support steel plate (3);

[0021] Step four: install the fixed pulley, first place the high-strength steel wire rope (6) in the groove below the fixed pulley (5); Then, align the center hole of the fixed pulley (5) with the circular hole of the front and rear V-shaped support steel plate (3); Finally, pass the fixed pulley shaft (4) through the circular hole of the front V-shaped support steel plate (3) and the center hole of the fixed pulley (5), and pass out from the circular hole of the rear V-shaped support steel plate (3);

[0022] Step five: cut the steel strand (7) according to the design length, connect the lower end of the steel strand (7) with the damper piston rod (31), and anchor the upper ends of the left and right steel strands (7) at the beam and column joints by applying equal pre-stress.

[0023] The beneficial effects of the present application are: (1) the damper support device mainly uses high-strength steel wire rope and steel strand connection, the support system belongs to flexible structure, light in weight, saves steel and cost; (2) the high-strength steel wire rope and steel strand can be symmetrically pre-stressed, so as to eliminate the installation gap at the fixed pulley, ensure that the relative displacement of the two ends of the damper does not decrease, in addition, the pre-stress can also reduce the elastic deformation of the whole support device, increase the energy dissipation capacity of the damper; (3) the damper support device can also be set inside the reinforced concrete shear wall, increase the energy dissipation and shock absorption capacity of the shear wall, and the use range is more widely. (4) a simple and reliable construction method is provided for the realization of the damper support device for building engineering. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the present application;

[0025] Figure 2 is Figure 1 vertical sectional view of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0027] As Figures 1-2As shown, the damper support device for construction engineering provided by the present application comprises reinforced concrete columns 22 and 23 arranged on the left and right sides, a bottom beam 21 and a top beam 24 arranged on the bottom and top, the reinforced concrete columns are fixed with the end portions of the bottom beam 21 and the top beam 24, a rectangular anchor plate 2 is anchored together with the straight anchor reinforcement 1 and the bottom beam 21, two V-shaped support steel plates 3 arranged in parallel in front and back are fixed with the anchor plate 2 at the bottom, the top of the V-shaped support steel plates 3 is fixed with the connecting flange 33 of the damper, a circular hole is dug on the symmetry axis of the front and back V-shaped support steel plates 3, a cylindrical fixed pulley shaft 4 passes through the circular hole of the V-shaped support steel plate 3 and is fixedly connected with the steel plate 3, a fixed pulley 5 is clamped in parallel in the middle of the front and back V-shaped support steel plates 3 and is sleeved on the outside of the fixed pulley shaft 4, the fixed pulley 5 can rotate around the fixed pulley shaft 4, a high-strength steel wire rope 6 is located in the sliding groove of the fixed pulley 5, and the two ends of the high-strength steel wire rope 6 are fixedly connected with the piston rods 31 at the lower ends of the left and right dampers, respectively, the piston rods 31 at the upper and lower ends of the damper are fixedly connected with a cylindrical piston 32, a cylindrical cylinder 34 is arranged outside the cylindrical piston 32, and an annular gap is left between the cylindrical piston 32 and the cylindrical cylinder 34, the lower end of the cylindrical cylinder 34 is fixed with the connecting flange 33, and the upper portion is fixed with a circular cover plate 35, a sealed cavity is surrounded between the inner surface of the cylindrical cylinder 34, the piston rod 31 and the outer surface of the cylindrical piston 32, the connecting flange 33 and the cover plate 35, and the sealed cavity is filled with a damping material 36, the piston rod 31 at the upper end of the damper is connected with the lower end of a steel strand 7, the upper end of the steel strand 7 is anchored at the nodes A and B of the beam and column through an anchor plate 8, and the periphery of the steel strand 7 and the piston rod 31 at the upper end of the damper is provided with a metal bellow 9.

[0028] Working principle of the present application:

[0029] Under the action of the seismic load, the building structure will produce interlayer relative displacement, the points A and B at the two ends of the top reinforced concrete beam 24 will change the relative position with respect to the point C in the middle of the bottom beam 21, the distance between the points A and C is lengthened (at this time, the distance between the points B and C is shortened) or shortened (at this time, the distance between the points B and C is lengthened), since the flexible system composed of the steel strand 7, the piston rod 31 of the damper, the cylindrical piston 32, the high-strength steel wire rope 6 and the fixed pulley 5 is connected between the points A and C and the points B and C, therefore, the relative displacement between the points A and C and the points B and C is converted into the relative displacement between the cylindrical piston 32 and the point C, and the cylindrical cylinder 34 is fixed with the point C in the middle of the bottom beam 21 through the V-shaped support steel plate 3 and the anchor plate 2, finally, the relative displacement between the points A and C and the points B and C is respectively converted into the relative displacement between the cylindrical pistons 32 on the left and right sides and the cylindrical cylinder 34. When there is relative displacement between the cylindrical piston and the cylindrical cylinder, the energy dissipation and shock absorption effect is generated, thereby effectively dissipating the seismic energy transmitted to the building structure, reducing the dynamic response of the structure under the action of the seismic load, and improving the seismic performance of the building structure.

[0030] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present application, and these should also be considered as the protection scope of the present application.

Claims

1. A wall frame based on V-shaped damping support, characterized by: The wall frame comprises a bottom beam (21), a left column (22), a top beam (24) and a right column (23) connected end to end, and a V-shaped damping support device is arranged in the frame, the bottom of the V-shaped damping support device is fixed on the bottom beam (21), and the upper end of the V-shaped damping support device is connected to the joint of the top beam (24) and the left column (22) and the joint of the top beam (24) and the right column (23) respectively; The V-shaped damping support device comprises a rectangular anchor plate (2) anchored on the bottom beam (21) by straight anchor bars (1), two V-shaped support steel plates (3) arranged on the rectangular anchor plate (2), two dampers arranged on the top of the V-shaped support steel plate (3) by connecting flanges (33), a fixed pulley shaft (4) arranged perpendicularly to the V-shaped support steel plate (3), a fixed pulley (5) rotatably mounted on the fixed pulley shaft (4), a high-strength steel wire rope (6) connected between the lower ends of the two dampers and wound around the sliding groove of the fixed pulley (5), and a steel strand (7) connected to the upper end of the damper, and the upper end of the steel strand (7) is anchored on the joint of the top beam (24) and the adjacent column by the anchor plate. The damper comprises a cylindrical cylinder (34) mounted on the connecting flange (33), a cylindrical piston (32) in the cylindrical cylinder (34), a circular cover plate (35) at the upper end of the cylindrical cylinder (34), and a piston rod (31) connected to both ends of the cylindrical piston (32), the lower end of the piston rod (31) penetrates through the connecting flange (33) and is connected with the high-strength steel wire rope (6), and the upper end of the piston rod (31) penetrates through the circular cover plate (35) and is connected with the steel strand (7); an annular gap is left between the cylindrical piston (32) and the cylindrical cylinder (34), a sealed cavity is formed between the inner surface of the cylindrical cylinder (34), the outer surface of the piston rod (31) and the cylindrical piston (32), and the connecting flange (33) and the circular cover plate (35), and the sealed cavity is filled with energy dissipation material (36); the damping directions generated by the two dampers are coordinated, the angles between the axes of the two dampers and the vertical line are the same, and the steel strands (7), the piston rods (31), the cylindrical pistons (32) and the high-strength steel wire ropes (6) on the same side are arranged along the same axis; the rectangular anchor plate (2) is located at the midpoint of the bottom beam (21), and the V-shaped support steel plates (3) are arranged parallel to each other.

2. The V-damp-based wall frame according to claim 1, wherein: The steel strands (7) symmetrically exert equal prestress.

3. The V-damping support based wall frame according to claim 1, wherein: The energy dissipation material (36) is a viscoelastic material or a magneto-rheological fluid or an electro-rheological fluid or a lead metal or a high-viscosity hydraulic oil.

4. A V-damp based wall frame according to any one of claims 1-3, characterized in that: The bottom beam (21) is a bottom frame concrete beam, the top beam (24) is a top frame concrete beam, the left column (22) is a left frame concrete column, and the right column (23) is a right frame concrete column.

5. A V-damp based wall frame according to any one of claims 1-3, characterized in that: The bottom beam (21) is a bottom concrete beam in the form of a shear wall, the top beam (24) is a top concrete beam in the form of a shear wall, the left column (22) is a right concrete column in the form of a shear wall, the right column (23) is a right concrete column in the form of a shear wall, and the periphery of the steel strand (7) and the upper end of the piston rod (31) of the damper is provided with a metal bellows (9).

6. A V-damp based wall frame according to any one of claims 1-3, characterized in that: The bottom beam (21) is a bottom steel frame beam, the top beam (24) is a top steel frame beam, the left side column (22) is a left side steel frame column, and the right side column (23) is a right side steel frame column.

7. A method of constructing a wall frame according to any one of claims 1 to 3, wherein The construction steps include the following: Step one: weld the straight anchor bar (1) on the rectangular anchor plate (2), and pre-bury the straight anchor bar and the rectangular anchor plate in the bottom beam (21); then, weld the V-shaped support steel plate (3) provided with a circular hole on the rectangular anchor plate (2) at the installation position; Step two: assemble the damper, first install the connecting flange (33) below the cylindrical cylinder (34) of the damper; then, connect the cylindrical piston (32) and the piston rod (31) of the damper together and insert the cylindrical cylinder from above the cylindrical cylinder (34), to ensure that the piston rod (31) penetrates from the middle hole of the connecting flange (33); finally, fill the energy dissipation material (36) in the cylindrical cylinder, and install the circular cover plate (35) above the cylindrical cylinder; Step three: install the damper, first cut the high-strength steel wire rope (6) to the designed length, and connect the piston rods (31) at the lower ends of the two dampers together by using the high-strength steel wire rope (6); then, place the two dampers on the top of the V-shaped support steel plate (3) on both sides, and fix the connecting flanges (33) of the dampers to the top of the V-shaped support steel plate (3); Step four: install the fixed pulley, first place the high-strength steel wire rope (6) in the groove below the fixed pulley (5); then, align the center hole of the fixed pulley (5) with the circular holes of the front and rear V-shaped support steel plates (3); finally, pass the fixed pulley shaft (4) through the circular hole of the front V-shaped support steel plate (3) and the center hole of the fixed pulley (5), and make the fixed pulley shaft (4) penetrate out of the circular hole of the rear V-shaped support steel plate (3); Step five: cut the steel strand (7) to the designed length, connect the lower end of the steel strand (7) to the piston rod (31) of the damper, and anchor the upper ends of the left and right steel strands (7) at the nodes of the beam and column by applying equal pre-stress. Step five: cut the steel strand (7) to the designed length, connect the lower end of the steel strand (7) to the piston rod (31) of the damper, and anchor the upper ends of the left and right steel strands (7) at the nodes of the beam and column by applying equal pre-stress.

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