CN218714107U

CN218714107U - Bending-resistant damping shear wall based on tension-compression-resistant friction damper

Info

Publication number: CN218714107U
Application number: CN202222815471.0U
Authority: CN
Inventors: 孙晓岭; 薛强
Original assignee: Xian University of Architecture and Technology
Current assignee: Xian University of Architecture and Technology
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-03-24
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses a bending resistance shock attenuation shear force wall based on tensile pressure friction damper, including frame roof beam, frame post, go up shear force wall and lower shear force wall, still including connecting in the at least a pair of tensile pressure shear type attenuator of shear force wall from top to bottom, shear force wall produces the horizontal shear motion about the interference through the opposition draws pressure shear type attenuator, eliminates relative rigid body rotation between the shear force wall from top to bottom. Through the arrangement of the pair of tensile compression shear type dampers, the shear wall can not only transfer bending moment downwards, but also generate horizontal shear deformation to dissipate seismic energy. The shear wall has bending rigidity and shearing rigidity simultaneously, can provide better ability of resisting earthquake effect for the main structure to better protection overall building structure.

Description

Bending-resistant damping shear wall based on tension-compression-resistant friction damper

Technical Field

The utility model relates to a building structure field of combatting earthquake especially relates to a take bending resistance shock attenuation shear force wall of tension and compression friction damper.

Background

The shock absorbing substructure is a key substructure in the shock absorbing structure to dissipate seismic energy. A common shock absorber substructure is composed of the following parts, as shown in fig. 1: the frame beam comprises a frame column 2, a frame beam 1, a foundation 5, an upper cantilever wall 3 and a lower cantilever wall 3, wherein the upper cantilever wall and the lower cantilever wall are arranged on the frame beam 1 of the upper floor and the lower floor, and a shear type damper 4 is arranged between the upper cantilever wall and the lower cantilever wall. When an earthquake occurs, the frame beams of the upper floor and the lower floor of the shock absorption substructure generate relative horizontal displacement to drive the upper cantilever wall and the lower cantilever wall to generate horizontal motion, and the dampers arranged between the cantilever walls generate relative sliding or telescopic motion to dissipate earthquake energy.

The above-mentioned damper substructure has the following problems: the damping force generated by the damper is opposite to the motion direction of the cantilever wall, the structural rigidity formed by the cantilever wall and the frame beam is limited, the damping force can enable the cantilever wall and the frame beam to integrally rotate, the relative motion distance of the damper is smaller than the floor displacement due to the integral rotation, and the smaller the relative motion distance of the damper, the poorer the energy consumption capability is. The smaller the rigidity of the frame beam is, the larger the integral rotation is, and the smaller the relative movement distance of the damper is, the poorer the energy consumption capability is. Namely, the damper can not fully exert the energy consumption capability under the earthquake action, and the damping action is obviously reduced.

The shear wall is an efficient lateral force resistant component in a building structure, has high shear rigidity and bending rigidity, and ensures the bearing capacity and rigidity of resisting horizontal force. However, shear walls tend to absorb more of the seismic action due to excessive stiffness and are the earliest failures.

The friction damper is a control device for dissipating vibration energy by utilizing friction energy dissipation of a friction surface, has simple structure, convenient installation and good energy dissipation performance, is not influenced by temperature, and is an energy dissipation and shock absorption device commonly used in engineering. The friction damper generates friction force by relative sliding between friction plates, and converts vibration energy of a building into heat energy, thereby achieving the purpose of reducing structural vibration response. However, the existing friction damper has poor damping force stability and fatigue performance, and has the following problems: the damper is usually designed to move in a single direction, shear or extension, and under the action of an actual earthquake, the movement of the damper is multidirectional. The friction damper of the shear motion also produces an additional bending moment under the action of the shear force, which in turn results in a motion perpendicular to the direction of the shear force. The multi-directional movement may cause contact of the damper at locations other than the friction plate, particularly between the prestressed bolt and the oblong hole, which may result in extremely poor damping force stability. Especially when the damper is subjected to an external force perpendicular to the direction of motion, which is unavoidable under the action of an earthquake, the damper may fail due to the locking of the sliding means. Meanwhile, under the action of an earthquake, the damper is difficult to replace after being damaged.

Therefore, the damper has important engineering significance in combination of the energy consumption capacity of the damper and the good lateral stiffness of the shear wall.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned defect that exists among the prior art, the utility model aims to provide a take bending resistance shock attenuation shear force wall of attenuator presses shear type attenuator through setting up a pair of tensile, makes the shear force wall can the downward transmission moment of flexure, can produce horizontal shear deformation dissipation seismic energy again. The shear wall has both bending rigidity and shearing rigidity, and can provide a main structure with better capability of resisting earthquake action, so that the whole building structure is better protected.

The utility model discloses a realize through following technical scheme.

The embodiment of the utility model provides a bending resistance shock attenuation shear force wall based on tensile pressure friction damper, including frame roof beam, frame post, go up shear force wall and lower shear force wall, still including connecting in the at least a pair of tensile pressure shearing type attenuator of upper and lower shear force wall, through the interference of tensile pressure shearing type attenuator in pairs, upper and lower shear force wall produces the horizontal shear motion, eliminates the relative rigid body rotation between the upper and lower shear force wall.

The embodiment of the utility model provides an in, tensile pressure shear type attenuator includes connecting piece and lower connecting piece, and connect the last friction plate and the lower friction plate of connecting piece and lower connecting piece each other to inserting respectively, go up the friction disc that sets up between friction plate and the lower friction plate.

The embodiment of the utility model provides an in, go up the friction plate including middle friction plate and both sides on the friction plate, lower friction plate inserts in the middle of between the friction plate is gone up to friction plate and both sides, connects through the prestressing force fastener.

In the embodiment of the utility model provides an in, the prestressing force fastener connects friction plate side pad on both sides and has belleville spring.

In the embodiment of the present invention, a pair of guide chain rods is fixed to the outer side surfaces of the pair of upper friction plates on both sides, respectively.

In the embodiment of the present invention, the guide chain rod is connected to both ends of the outer side surfaces of the friction plates on both sides by the prestressed fastening member.

The embodiment of the utility model provides an in, go up connecting piece and lower connecting piece respectively with last friction plate and lower friction plate be assembled between/be connected between.

The embodiment of the utility model provides an in, go up the both ends that shear force wall and lower shear force wall are connected respectively to connecting piece and lower connecting piece.

The utility model discloses owing to take above technical scheme, it has following beneficial effect:

1. the utility model discloses in building structure shock attenuation field, improve through simplest structural style and motion mechanism, solved traditional shock attenuation substructure from the root and only sheared not bending resistance, shock attenuation efficiency receives the big defect of shock attenuation substructure influence. And the utility model discloses the bending rigidity and the shear rigidity of shear force wall are relevant with self size and attenuator parameter, and the rigidity change rather than the continuous frame roof beam can show its atress performance of influence.

2. The arrangement of the paired tensile compression shear type dampers forces the upper and lower shear walls to only produce horizontal shear motion, and eliminates the relative rigid body rotation between the upper and lower shear walls. The horizontal displacement of the floor is completely converted into the bending deformation of the shear wall and the shearing deformation of the damper. The shear wall has large bending rigidity and small bending deformation, the floor displacement is converted into the horizontal shearing displacement of the damper in a large proportion, and further the damper consumes more seismic energy. The damping device has better energy consumption capability, thereby having better damping effect.

3. The utility model discloses a simple and easy guider forces the attenuator to move according to the predetermined direction, applys even and invariable compressive stress through belleville spring and prestressing force fastener. On the premise of not increasing the structural complexity basically, the friction plate is more uniformly pressed and more uniformly abraded due to the single movement form, so that the damper can output stable damping force. Meanwhile, the damper is prevented from losing energy consumption capability due to multidirectional movement of the damper under the action of a complex earthquake, the fatigue resistance problem of the friction damper under the action of the complex earthquake is fundamentally solved, and the friction damper can better exert the damping performance.

4. The utility model discloses shear force wall forces the attenuator to produce pure one-way horizontal shear motion, has avoided the vertical relative displacement of emergence of attenuator and relative rotation, and then has avoided the attenuator to trigger relevant subassembly lock because of multidirectional motion and has died the attenuator inefficacy that leads to. Therefore, the damper is simpler in design and structure due to unidirectional simple motion, and the stress stability and fatigue resistance performance of the damper are guaranteed under the action of an earthquake.

5. The utility model provides a guider still can bear the pressure of drawing of perpendicular to direction of motion under the complex earthquake effect, provides additional bearing capacity for the attenuator, can make the attenuator have better atress performance and reliability.

6. The utility model discloses an assembly connection between friction plate and the connecting piece has realized the change and the restoration of impaired attenuator after the shake, and restoration after the shake to building structure has important meaning.

The utility model discloses in the friction damper field, improve through simplest structural style and motion mechanism, solved traditional friction damper damping force unstability from the root, the defect that fatigue life is short. Meanwhile, the advantages of simple structure, convenient material taking and economical manufacturing cost of the friction damper are continued.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:

FIG. 1 is a schematic view of a conventional shock absorber;

FIG. 2 is a schematic view of the bending-resistant and shock-absorbing shear wall structure of the present invention;

fig. 3 (a) - (c) are schematic structural views of the tension-compression-shear-type damper of the present invention; FIG. 3 (a) is a sectional view of both sides of a tension compression shear type damper; FIG. 3 (b) is a middle sectional view of the tension compression shear type damper; fig. 3 (c) is a side view of the tension/compression shear type damper.

In the figure: 1. a frame beam; 2. a frame column; 3. a cantilever wall; 4. a shear-type damper; 5. a foundation; 6. an upper shear wall; 7. a lower shear wall; 8. a tension-compression-shear-type damper;

01. a guide chain bar; 02. an upper connecting piece; 03. a first pre-stressed fastener; 04. a middle upper friction plate; 05. friction plates on both sides; 06. a friction plate; 07. a second pre-stressed fastener; 08. a disc spring; 09. a lower friction plate; 010. and a lower connecting piece.

Detailed Description

The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided to explain the invention, but not to limit the invention.

As shown in fig. 2, for the bending-resistant damping shear wall with damper provided by the embodiment of the present invention, the bending-resistant damping shear wall includes an upper shear wall 6, a lower shear wall 7, a tensile compression shear type damper 8, a frame beam 1 and a frame column 2. The upper shear wall 6 and the lower shear wall 7 are connected to the frame beam 1 at the upper and lower floors and further connected to the frame column 2, and the upper shear wall 6 and the lower shear wall 7 are connected by a pair of tensile compression shear type dampers 8. The tension-compression-shear-type damper may be a friction damper or a metal damper.

Compared with the traditional vibrator structure, the vibrator structure only has shear-resistant bearing capacity/rigidity A; the utility model discloses a shear force wall 6 is connected to a pair of tensile pressure shear type attenuator 8 and shear force wall 7 down, has good tensile pressure bearing capacity and rigidity C at its vertical needs, and its level produces damping force to can carry out shear motion, has bending resistance bearing capacity/rigidity B and consumes energy.

As shown in fig. 3 (a) - (b), the tension and compression resistant friction damper 8 includes an upper connecting member 02, a lower connecting member 010, a middle upper friction plate 04 connected to the upper connecting member 02, and a pair of lower friction plates 09 connected to the lower connecting member 010, respectively, wherein the upper connecting member 02 is connected to the middle upper friction plate 04 by a first pre-stressed fastening member 03, and the lower connecting member 010 is connected to and passes through the first pre-stressed fastening member 03. The double-side friction plate assembly further comprises two side upper friction plates 05 which are positioned on the outer sides of the pair of lower friction plates 09, the two side upper friction plates 05 are connected with the pair of lower friction plates 09 and the middle upper friction plate 04 through an upper and a lower pair of second prestress fasteners 07, and friction plates 06 are arranged between the two side upper friction plates 05 and the pair of lower friction plates 09 and the middle upper friction plate 04 in a cushioning mode.

As shown in fig. 3 (c), a pair of guide chain bars 01 are fixed to outer side surfaces of the pair of upper friction plates 05 on both sides, respectively, and the guide chain bars 01 are positioned at both ends of the upper friction plates 05 on both sides, respectively, and are connected by a first prestressed fastener 03.

In the device, an upper friction plate 04 in the middle, an upper friction plate 05 on two sides and a lower friction plate 09 on two sides are oppositely inserted and transversely penetrate through the upper friction plate and the lower friction plate through a second prestressed fastener 07 to be connected. A belleville spring 08 is provided between the second prestressed fastening member 07 and the friction plates 05 on both sides to keep the pretension applied to the friction plates constant. The high-performance friction plate 06 is arranged between the upper friction plate and the lower friction plate, so that cold bonding or condensation cannot be generated between the upper friction plate and the lower friction plate, and the friction surface is prevented from being locked. The middle upper friction plate 04, the upper friction plates 05 and the upper connecting piece 02 on two sides, and the lower friction plate 09 and the lower connecting piece 010 are assembled and connected through a first prestress fastening piece 03. The upper connecting piece and the lower connecting piece are respectively connected with the upper shear wall and the lower shear wall through the anchoring devices on the upper connecting piece and the lower connecting piece, and the upper connecting piece and the lower connecting piece are respectively connected with two end parts of the upper shear wall and the lower shear wall. The guide chain rod 01 is arranged between the upper friction plate and the lower friction plate, so that the upper connecting piece 02 and the lower connecting piece 010 can only perform horizontal shearing movement. When an earthquake occurs, the building structure forces the upper friction plate and the lower friction plate to generate pure horizontal shearing movement, and further consumes energy through stable friction force. Meanwhile, the vertical pulling pressure transmitted to the damper by the building structure is borne by the guide chain rod, so that the damper is prevented from generating vertical movement and being locked, and further the energy consumption capability is lost. After an earthquake occurs, the damaged damper can be replaced by the upper friction plate, the lower friction plate and related parts through dismounting the second prestress fastening piece, so that the damper can be replaced and repaired conveniently.

When an earthquake occurs, the frame beams on the upper floor and the lower floor of the shock absorption substructure generate relative horizontal displacement to drive the upper shear wall to generate horizontal motion. Under the action of horizontal force, the shear wall generates bending moment and horizontal shear force and transmits the bending moment and the horizontal shear force downwards. The dampers arranged at the two ends of the shear wall vertically generate a pair of tensile force and pressure to resist the bending moment transmitted by the upper shear wall and transmit the bending moment to the lower shear wall. Meanwhile, the horizontal force transmitted to the damper by the upper shear wall can force the damper to generate horizontal shear motion so as to play a role in energy consumption. The lower shear wall continues to transmit the bending moment and the horizontal force to the lower-layer frame beam or the foundation. Therefore, the utility model discloses the shear force wall can be continuous transmits moment of flexure downwards, and the horizontal shear force of while downward transmission forces the attenuator dissipation seismic energy.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides a bending-resistant shock attenuation shear force wall based on tensile pressure friction damper, includes frame roof beam, frame post, goes up shear force wall, lower shear force wall and tensile pressure shear type attenuator in pairs, its characterized in that, at least a pair of tensile pressure shear type attenuator connect in go up shear force wall and lower shear force wall, through the interference of tensile pressure shear type attenuator in pairs, upper and lower shear force wall produces the horizontal shear motion, eliminates the relative rigid body rotation between the upper and lower shear force wall.

2. The bending-resistant, shock-absorbing shear wall of claim 1, wherein the tension-resistant, shear-type damper comprises an upper connecting member and a lower connecting member, and an upper friction plate and a lower friction plate which are inserted into each other and respectively connected to the upper connecting member and the lower connecting member, the upper friction plate and the lower friction plate having friction plates interposed therebetween.

3. The bending-resistant, shock-absorbing shear wall of claim 2, wherein the upper friction plates comprise a middle upper friction plate and two side upper friction plates, and the lower friction plate is interposed between the middle upper friction plate and the two side upper friction plates and connected by a prestressed fastener.

4. The bending resistant, shock absorbing shear wall of claim 3, wherein the prestressed fasteners are padded with belleville springs on the side of the friction plates on both sides of the prestressed fastener connection.

5. The bending-resistant, shock-absorbing shear wall of claim 3, wherein a pair of guide link rods are fixed to outer side surfaces of the pair of side upper friction plates, respectively.

6. The bending-resistant, shock-absorbing shear wall of claim 5, wherein the guide link rods are connected to both ends of the outer side surfaces of the friction plates on both sides by means of pre-stressed fasteners.

7. The bending-resistant, shock-absorbing shear wall of claim 2, wherein the upper and lower connecting members are assembled with the upper and lower friction plates, respectively.

8. The bending-resistant, shock-absorbing shear wall of claim 2, wherein the upper and lower connecting members connect the two ends of the upper and lower shear walls, respectively.