A self-resetting shear wall structure with adaptive floor

Abstract

The application discloses a self-resetting shear wall structure with an adaptive floor, which comprises a self-resetting shear wall, a damping component and an adaptive floor, wherein the damping component is located at the foot of the self-resetting shear wall, and the adaptive floor is located at the top of two adjacent self-resetting shear walls to connect the self-resetting shear walls in the transverse direction into a whole. Vertical prestressed tendons are arranged in the self-resetting shear wall, and the self-resetting shear wall is self-resetting after an earthquake through prestress. The damping component dissipates the energy input into the structure by metal friction, thereby protecting the main structure. The adaptive floor solves the deformation incoordination problem caused by the vertical displacement or horizontal movement of the two adjacent shear walls through special structure, and a shear fork expansion structure and a limiting rod are further arranged to ensure that the adaptive floor does not fall due to deviation from the preset position when shaking, thereby eliminating the safety hazard.

Description

Technical Field

[0001] This invention relates to an engineering vibration reduction structure, specifically to a self-resetting shear wall structure that can achieve coordinated floor slab deformation. Background Technology

[0002] Traditional shear wall structures often use a fixed connection between the wall and the foundation or floor slab. When subjected to a strong earthquake, the wall will develop a large number of cracks and permanent deformation, which not only threatens people's lives and property, but is also difficult to restore after the earthquake, resulting in huge repair costs.

[0003] Self-resetting shear wall structures are a new type of earthquake-resistant structural system with recoverable function. The walls are disconnected from the foundation or floor slab, and the connection is achieved through prestressed tendons. During an earthquake, the walls are allowed to "sway" to a certain extent around their base, utilizing this swaying effect to mitigate wall damage. After an earthquake, the restoring force provided by the prestress helps them return to their initial position. These structures typically do not suffer significant permanent damage and do not require large-scale repairs or replacements after an earthquake, resulting in relatively low maintenance costs. They represent an important future development direction for seismic mitigation structures.

[0004] When a self-centering shear wall structure sways under seismic loading, the wall will rotate from a vertical to an inclined state, causing the floor slabs between adjacent walls to simultaneously shift in both the vertical and horizontal directions. This means the floor slabs will simultaneously experience shear deformation (vertical) and axial deformation (horizontal). Since this deformation far exceeds the elastic deformation range of the steel reinforcement and concrete, the floor slabs will inevitably fail due to this uncoordinated deformation. Summary of the Invention

[0005] Purpose of the invention: To address the aforementioned existing technologies, this invention proposes a self-resetting shear wall structure with adaptive floor slabs, overcoming the problem of inconsistent deformation of floor slabs between adjacent shear walls in existing self-resetting shear wall structures.

[0006] Technical solution: A self-resetting shear wall structure with an adaptive floor slab, comprising a self-resetting shear wall, energy dissipation components, and an adaptive floor slab;

[0007] The self-resetting shear wall is connected to the beam or floor slab at its bottom through its prestressed tendons and anchors, and the energy dissipation component is connected between the self-resetting shear wall and the beam or floor slab. The energy dissipation component is used to plastically dissipate the energy input by the earthquake. The top side or both sides of the self-resetting shear wall are provided with L-shaped chamfers for connecting the adaptive floor slab.

[0008] The adaptive floor slab includes a floor slab body, a comb-tooth structure, and rubber-lead core seismic isolation bearings. The two ends of the floor slab body are respectively connected to the vertical surface of the L-shaped chamfer of the self-resetting shear wall through the comb-tooth structure, and the rubber-lead core seismic isolation bearings are set between the bottom surfaces of the two ends of the floor slab body and the horizontal surface of the L-shaped chamfer of the self-resetting shear wall. Among them, one side of the comb-tooth structure is fixedly connected to the vertical surface of the L-shaped chamfer of the self-resetting shear wall, and the other side is fixedly connected to the end side of the floor slab body.

[0009] Furthermore, the adaptive floor slab also includes a scissor telescopic structure, the two ends of which are fixedly connected to the sides of the opposite self-resetting shear wall; the scissor telescopic structure also includes a horizontal bar and a limiting bar, the two ends of which are fixed to the midpoints of a set of opposite sides of the intermediate frame, and a positioning plate is fixed in the center of the horizontal bar; the limiting bar is vertically arranged, one end of which is fixedly connected to the positioning plate, and the other end is inserted into a blind hole in the center of the bottom surface of the floor slab body.

[0010] Furthermore, the self-resetting shear wall includes a wall body, the wall body having a through-hole in the middle, the prestressing tendons passing through the through-hole and then connected to the beam or floor slab at its bottom by the anchor, the energy dissipation components being symmetrically arranged at the tension and compression corners at the bottom of the wall body; at the bottom of the wall body, steel sleeves are also symmetrically arranged on both sides of the prestressing tendons.

[0011] Furthermore, a T-shaped slot is provided on the side of the self-resetting shear wall near the top, and a T-shaped fastener is provided at the end of the scissor telescopic structure. The T-shaped fastener extends into the T-shaped slot and rotates 90 degrees to form a tight connection with the T-shaped slot.

[0012] Furthermore, the energy-consuming component includes a U-shaped energy-consuming plate, with through holes on its top and bottom surfaces; embedded steel plates and nut sleeves are respectively provided in the tension-compression corner of the bottom of the wall body and in the beam or floor slab directly opposite it, with one end of the nut sleeve welded to the embedded steel plate; the top surface of the U-shaped energy-consuming plate is connected to the nut sleeve embedded in the tension-compression corner of the bottom of the wall body by bolts, and an upper pad is provided between the two; the bottom surface of the U-shaped energy-consuming plate is connected to the nut sleeve embedded in the beam or floor slab by bolts, and a lower pad is provided between the two.

[0013] Beneficial Effects: In the structure of this invention, vertical prestressed tendons are installed inside the self-resetting shear wall, achieving self-resetting of the shear wall after an earthquake through prestressing. Energy-dissipating components are used to plastically dissipate the energy input to the structure during earthquakes, protecting the main structure. The adaptive floor slab, through its special construction, solves the problem of deformation incoordination caused by vertical misalignment or horizontal movement between adjacent shear walls. Specifically, for shear deformation: the adaptive floor slab is connected to the shear wall via rubber-lead core seismic isolation bearings. When the floor slab moves vertically, its ends, not fixed to the wall but resting on the rubber-lead core seismic isolation bearings, can freely rise and fall with the wall's movement without generating shear force. For axial deformation: regardless of whether the two walls are moving closer or further apart axially, the adaptive floor slab can be flexibly adjusted through the pre-reserved gaps between the comb-shaped teeth. Simultaneously, a scissor-type telescopic structure and limiting rods are also provided to ensure that the adaptive floor slab does not fall due to deviation from the preset position during shaking, eliminating safety hazards. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the overall structure of the present invention;

[0015] Figure 2 This is a structural schematic diagram of a self-resetting shear wall;

[0016] Figure 3 This is a structural schematic diagram of the steel sheath;

[0017] Figure 4 This is a schematic diagram of the T-shaped card slot.

[0018] Figure 5 This is a schematic diagram of the U-shaped energy-dissipating panel.

[0019] Figure 6 Schematic diagram of the connection structure between steel plate and nut sleeve;

[0020] Figure 7 This is a structural schematic diagram of an adaptive floor slab;

[0021] Figure 8 This is a schematic diagram of the structure of a T-type fastener;

[0022] Figure 9 A schematic diagram of a scissor lift telescopic structure;

[0023] Figure 10 This is a schematic diagram of the limit rod structure;

[0024] Figure 11 This is a schematic diagram of the comb tooth structure;

[0025] Figure 12 A schematic diagram of a rubber-lead-core seismic isolation bearing;

[0026] Figure 13This is a structural schematic diagram of the main floor slab. Detailed Implementation

[0027] The invention will now be further explained with reference to the accompanying drawings.

[0028] like Figure 1 As shown, a self-resetting shear wall structure with an adaptive floor slab includes a self-resetting shear wall, energy-dissipating components, and an adaptive floor slab.

[0029] like Figure 1 , Figure 2 As shown, the self-centering shear wall consists of a main wall body 1, prestressed tendons 2, anchorages 3, and a steel sheath 4. Several vertically penetrating ducts are formed near the vertical centerline of the main wall body 1. Each prestressed tendon 2 passes through these ducts and is then connected to the main wall body 1 by the anchorages 3 to the beam or floor slab 18 at its base. Figure 3 The steel sheath 4 shown is set between the main wall 1 and the bottom beam or floor slab 18, and is symmetrically distributed on both sides of the prestressing tendon 2.

[0030] like Figure 1 , Figure 2 As shown, energy-dissipating components are symmetrically arranged at the tension / compression corners at the bottom of the main body 1 of the self-resetting shear wall. Figure 5 As shown, the main body of the energy-consuming component is a U-shaped energy-consuming plate 9, with bolt through holes on the top and bottom surfaces of the U-shaped energy-consuming plate 9. At the bottom of the main body 1 of the self-resetting shear wall, on both the left and right sides, two tension-compression corners are respectively provided with embedded steel plates 5 and nut sleeves 6 in the beams or floor slabs 18 opposite to them. One end of the nut sleeve 6 is welded to the embedded steel plate 5, such as... Figure 6 As shown. The top surface of the U-shaped energy-consuming panel 9 is connected to the nut sleeve 6 pre-embedded at the bottom of the wall body 1 by bolts 8, and an upper pad 10 is provided between the two; the bottom surface of the U-shaped energy-consuming panel 9 is connected to the nut sleeve 6 pre-embedded at the beam or floor slab 18 by bolts 8, and a lower pad 7 is provided between the two.

[0031] In this embodiment, each self-resetting shear wall is provided with four energy-consuming components. The top and bottom surfaces of each energy-consuming component are provided with four bolt through holes arranged in a square. The upper pad 10 and the lower pad 7 are provided with through holes at corresponding positions. The upper and lower surfaces of the U-shaped energy-consuming plate 9 are bolted to the pad and the pre-embedded nut sleeve 6 by bolts 8.

[0032] like Figure 1 , Figure 2 As shown, the top one or both sides of the self-resetting shear wall body 1 are provided with L-shaped chamfers for connecting to the adaptive floor slab, and the side of the self-resetting shear wall near the top chamfer is provided with... Figure 4 The T-shaped slot 11 is shown. (As shown) Figure 7As shown, the adaptive floor slab includes a floor slab body 16, a comb-like structure 15, rubber-lead core seismic isolation bearings 17, and a scissor-extension structure 13. The two ends of the floor slab body 16 are respectively connected via... Figure 11 The comb-like structure 15 shown is connected to the vertical surface of the L-shaped chamfer of the self-resetting shear wall, and is provided between the bottom surfaces of both ends of the floor slab body 16 and the horizontal surface of the L-shaped chamfer of the self-resetting shear wall. Figure 12 The rubber-lead core seismic isolation bearing 17 is shown. One side of the comb-shaped structure 15 is fixedly connected to the vertical surface of the L-shaped chamfer of the self-resetting shear wall, and the other side is fixedly connected to the end side of the floor slab body 16. In this embodiment, several rubber-lead core seismic isolation bearings 17 are respectively provided on the bottom surfaces of both ends of the floor slab body 16, and flexible material is filled in the gap between the bottom surfaces of both ends of the floor slab body 16 and the horizontal surface of the L-shaped chamfer of the self-resetting shear wall.

[0033] like Figure 9 As shown, the scissor lift telescopic structure 13, in addition to the main body structure, also includes a crossbar 131 and a [missing information - likely a crossbar or crossbar]. Figure 10 The limiting rod 14 shown is fixed at both ends of the crossbar 131 to the midpoints of a pair of opposite sides of the intermediate frame, and a positioning plate 132 is fixed at the center of the crossbar 131. The two ends of the scissor telescopic structure 13 are respectively provided with... Figure 8 The T-shaped fastener 12 shown extends into the T-shaped slot 11 on the side of the self-resetting shear wall and rotates 90 degrees to form a fastening connection with the T-shaped slot 11, thus fixing one end of the scissor telescopic structure 13 to the opposite side of the self-resetting shear wall. The limiting rod 14 is vertically set, with one end fixedly connected to the positioning plate 132, and the other end inserted into... Figure 13 The floor slab body 16 shown is connected to the center of the bottom surface of the floor slab body 16 via a blind hole. The length and dimensions of the scissor telescopic structure 13 vary depending on the distance between the shear walls.

[0034] When the self-resetting shear wall structure of the present invention sways under earthquake action, the main body 1 of the wall will rotate from a vertical state to an inclined state, causing the main body 16 of the floor slab between adjacent walls to simultaneously shift in both the vertical and horizontal directions. That is, the floor slab simultaneously undergoes shear deformation (vertical direction) and axial deformation (horizontal direction). Since this deformation amount far exceeds the elastic deformation range of steel bars and concrete, the floor slab will inevitably fail due to the incoordination of deformation.

[0035] To overcome the problem of inconsistent deformation of floor slabs between adjacent shear walls during earthquakes, this invention proposes a self-resetting shear wall structure with adaptive floor slabs.

[0036] (1) Self-resetting and energy dissipation principle

[0037] During an earthquake, the self-resetting shear wall rotates around the midpoint of the bottom of the main wall structure 1. Taking the counterclockwise rotation of the main wall structure 1 as an example, that is, when the main wall structure 1 collapses to the left, Figure 1 The two main wall sections 1 shown tilt to the left, causing the U-shaped energy dissipation plates 9 at the lower left corner of each shear wall to compress and deform, while the main wall section 1 at the lower right corner undergoes tensile deformation. The energy input from the earthquake is dissipated through the material of the energy dissipation plates, thus protecting the main wall sections 1 from damage. The steel sleeves 4 on the left and right sides of the bottom of the main wall sections 1 are used to reinforce the swaying parts of the wall. The shape of the steel sleeves 4 conforms to the bottom of the main wall sections 1 and the connection points with beams or floor slabs 18. After an earthquake, the self-resetting shear walls, under the action of prestress and their own weight, will rotate clockwise and return to their original position, achieving self-resetting.

[0038] (2) Working principle of adaptive floor system

[0039] Taking the counterclockwise rotation of the wall body 1 as an example, when each wall body 1 tilts to the left, the left end of the adaptive floor slab body 16 simultaneously moves to the left and upward, and the right end of the floor slab body 16 simultaneously moves to the left and downward. The combined effect of the two is that the floor slab body 16 will be destroyed due to the simultaneous shear deformation (vertical direction) and axial deformation (horizontal direction).

[0040] Regarding shear deformation: The horizontal plane of the L-shaped chamfer of the floor slab body 16 and the wall body 1 of the self-resetting shear wall is connected by rubber lead core seismic isolation bearings 17. When the wall body 1 moves up and down, since the two ends of the floor slab body 16 are not fixed to the wall body 1, but rest on the rubber lead core seismic isolation bearings 17, it can move up and down freely with the wall body 1 without generating shear force.

[0041] Regarding axial deformation: Regardless of whether the two wall bodies 1 are close together or far apart in the axial direction, the adaptive floor slab can be flexibly adjusted through the gap reserved between the comb teeth on both sides of the comb structure 15.

[0042] Simultaneously, a scissor-type telescopic structure 13 and a limiting rod 14 are installed. The positioning plate at the middle of the scissor-type telescopic structure 13 is welded to the limiting rod 14, and the upper part of the limiting rod 14 is inserted into the blind hole in the center of the bottom surface of the floor slab body 16. Regardless of how the scissor-type telescopic structure 13 deforms (axial tension / compression or vertical displacement), the positioning plate 132 and the limiting rod 14 are always located at the midpoint of the length of the scissor-type telescopic structure 13. Therefore, no matter how the adjacent shear walls move, the floor slab body 16 will remain in the central position of the shear walls without shifting, thus preventing in-plane displacement of the floor slab during an earthquake. That is, this structure ensures that the floor slab body 16 does not deviate from the preset position when swaying in the horizontal plane, and remains in the exact center of the two wall bodies 1, especially ensuring that the floor slab body 16 does not fall when the two wall bodies 1 are pulled apart.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A self-centering shear wall structure with adaptive floor, characterized by, The self-resetting shear wall, energy dissipation component and self-adaptive floor are included. The self-resetting shear wall is connected with the beam or floor (18) at the bottom thereof through prestressed tendons (2) and anchorage devices (3), and the energy dissipation component is connected between the self-resetting shear wall and the beam or floor (18), and the energy dissipation component is used for plastic dissipation of energy of earthquake input; one side or both sides of the top of the self-resetting shear wall are provided with L-shaped cut corners for connecting the self-adaptive floor. The self-adaptive floor includes a floor body (16), a comb structure (15) and a rubber lead core isolation support (17); two ends of the floor body (16) are connected with vertical faces of the L-shaped cut corners of the self-resetting shear wall through the comb structure (15), and the rubber lead core isolation support (17) is arranged between the bottom faces of the two ends of the floor body (16) and horizontal faces of the L-shaped cut corners of the self-resetting shear wall; wherein one side tooth of the comb structure (15) is fixedly connected with the vertical face of the L-shaped cut corner of the self-resetting shear wall, and the other side tooth is fixedly connected with the side face of the end of the floor body (16). The self-adaptive floor further includes a scissor structure (13), two ends of the scissor structure (13) are fixedly connected with opposite side faces of the self-resetting shear wall; the scissor structure (13) further includes a horizontal rod (131) and a limiting rod (14), two ends of the horizontal rod (131) are fixed with the midpoints of a pair of opposite sides of a middle frame, and a positioning plate (132) is fixed in the center of the horizontal rod (131); the limiting rod (14) is vertically arranged, one end of the limiting rod (14) is fixedly connected with the positioning plate (132), and the other end of the limiting rod (14) is inserted into a blind hole in the center of the bottom face of the floor body (16).

2. The self-centering shear wall structure with adaptive floor according to claim 1, wherein, The self-resetting shear wall includes a wall body (1), a hole passing through the wall body (1) is arranged in the middle of the wall body (1), the prestressed tendons (2) pass through the hole and connect the wall body (1) with the beam or floor (18) at the bottom thereof through the anchorage devices (3), and the energy dissipation component is symmetrically arranged at the pull and pressure corners at the bottom of the wall body (1); steel sheaths (4) are symmetrically arranged at the bottom of the wall body (1) and on both sides of the prestressed tendons (2).

3. The self-centering shear wall structure with adaptive floor according to claim 1, wherein, A T-shaped clamping groove (11) is arranged at a position close to the top of the side face of the self-resetting shear wall, a T-shaped fastener (12) is arranged at the end of the scissor structure (13), the T-shaped fastener (12) is inserted into the T-shaped clamping groove (11) and is fastened and connected with the T-shaped clamping groove (11) after being rotated by 90 degrees.

4. The self-centering shear wall structure with adaptive floor according to claim 2, wherein, The energy dissipation component comprises a U-shaped energy dissipation plate (9), the top surface and the bottom surface of the U-shaped energy dissipation plate (9) are respectively provided with through holes; the pull-pressure corner portion of the bottom of the wall body (1) and the beam or the floor (18) opposite to the pull-pressure corner portion are respectively provided with a pre-embedded steel plate (5) and a nut sleeve (6), one end of the nut sleeve (6) is welded with the pre-embedded steel plate (5); the top surface of the U-shaped energy dissipation plate (9) is connected with the nut sleeve (6) pre-embedded at the pull-pressure corner portion of the bottom of the wall body (1) through bolts (8), and an upper gasket (10) is arranged between the U-shaped energy dissipation plate (9) and the nut sleeve (6); the bottom surface of the U-shaped energy dissipation plate (9) is connected with the nut sleeve (6) pre-embedded at the beam or the floor (18) through bolts (8), and a lower gasket (7) is arranged between the U-shaped energy dissipation plate (9) and the nut sleeve (6).

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