A reusable decoupling type wind resistance device

Abstract

The present invention discloses a reusable decoupled wind-resistant device, which includes a slider, a rotating hook and a moving hook; when there is no deformation, the moving hook and the rotating hook are engaged together through a semi-circular structure and are closely attached to the slider. The rotating hook is connected to the upper part of the isolation layer through a support, and the moving hook is connected to the lower part of the isolation layer through a pier; when there is a deformation difference up and down and the deformation is small, due to the tight engagement of the hooks, stiffness is provided for the structure to inhibit structural deformation; when the deformation is large, the rotating hook is disengaged from the slider, and due to the action of its own weight, the rotating hook is disengaged from the sliding hook. At this time, only the isolation bearing provides stiffness for the structure, and the separation of wind resistance and seismic resistance can be effectively achieved.

Description

Technical Field

[0001] The invention relates to the field of building shock absorption, in particular to a reusable decoupling type wind-resistant device. Background Art

[0002] Seismic isolation technology provides a way to extend the period of the structure to reduce the effect of earthquakes. From the response spectrum principle, it can be seen that as the period of the structure is extended, the seismic effect is reduced. Therefore, in theory, the smaller the stiffness of the seismic isolation layer, the smaller the period of the structure, the smaller the seismic effect, and the better the seismic isolation effect. The seismic isolation structure is to set seismic isolation bearings on the seismic isolation layer. From the perspective of seismic resistance, the horizontal stiffness of the seismic isolation bearing should be as low as possible under the conditions of meeting the deformation limit, compression and tension of the bearing. The commonly used bearings in engineering are rubber bearings and lead-zinc rubber bearings. Under the stiffness of the rubber bearing, the structural period is significantly extended and the seismic effect is greatly reduced; the lead-zinc rubber bearing is stiff and has good energy consumption, but the period is less extended and the seismic effect is limited.

[0003] Earthquakes are accidental loads. The forces on the structure in the horizontal direction include not only earthquakes but also wind loads. Moreover, wind loads are common loads and occur all the time during the life cycle of the structure. When the structural stiffness is small, it will cause a large deformation of the structure under the action of wind loads, thus affecting the use of the structure. In order to meet the requirements of normal use of the structure, the structure should not be deformed too much under the action of wind loads. Therefore, the isolation layer is required to have the necessary stiffness. To a certain extent, the isolation bearing itself is difficult to take into account the needs of wind resistance and earthquake resistance at the same time. For this reason, rubber bearings and lead-zinc rubber bearings are often used in combination in projects, which solves the problem of wind loads to a certain extent, but may lead to limited reduction in earthquake effects.

[0004] In order to effectively ensure the shock absorption effect of seismic isolation, some scholars have proposed a method of separating earthquake resistance and wind resistance. The wind-resistant device is separated from the seismic isolation support, that is, a wind-resistant device is added to the seismic isolation layer. When resisting wind, the wind-resistant device and the seismic isolation support work together. When resisting earthquakes, the wind-resistant support fails and exits the work, and then only the seismic isolation support works, thereby achieving the effect of taking into account both wind resistance and earthquake resistance. The existing wind-resistant device generally weakens a part of the steel component, and the predetermined weakened part is fractured under the action of wind load, so that it exits the work. This method is feasible in theory, but there are still major deficiencies in actual engineering. On the one hand, due to the certain ductility of steel, on the other hand, the earthquake is complex, and the force of the steel component is also complex, and the predetermined fracture is difficult to achieve, which makes the stiffness of the seismic isolation layer larger during earthquakes, and it is difficult to achieve a good seismic isolation effect. At the same time, the above-mentioned wind-resistant device is at the cost of device failure, and cannot be reused, resulting in a large waste. In addition, the size of the wind load is actually variable, and it is possible that the wind-resistant device has failed under the action of the wind load, making it difficult to achieve the purpose of wind resistance. Summary of the invention

[0005] Objective of the Invention: To solve the problems existing in the prior art, the present invention provides a reusable decoupling anti-wind device.

[0006] Technical Solution: To achieve the above objective, the present invention can adopt the following technical solutions: A reusable decoupling anti-wind device includes the upper part of the isolation layer, the lower part of the isolation layer, isolation bearings arranged between the two, sliders, rotating hooks and moving hooks; there are two isolation bearings, respectively arranged at two ends, and the isolation bearings are supported and connected between the upper and lower isolation layers through upper piers and lower piers; the moving hook is arranged on the lower pier of the isolation bearing.

[0007] The slider is connected to the lower part of the isolation layer, a connecting support is fixedly arranged below the upper part of the isolation layer, and the rotating hook is movably connected to the lower end of the connecting support through a pin shaft; the free end of the rotating hook is placed on the slider, and the whole is in a horizontal state.

[0008] The free end of the moving hook is provided with a downward convex structure, which is engaged with the free end of the rotating hook and then placed on the slider together. Horizontally, the contact length between the rotating hook and the slider is determined according to the set detachment value.

[0009] When there is no deformation or the deformation is small, the rotating hook and the moving hook are tightly engaged, and the free end of the rotating hook does not undergo horizontal displacement in the direction of the moving hook.

[0010] When the deformation of the anti-wind device reaches a certain degree, the rotating hook undergoes horizontal displacement in the direction opposite to the moving hook under the action of its own weight and disengages from the slider. At this time, only the isolation bearing provides stiffness for the structure.

[0011] Furthermore, the pin shaft is a detachable pin shaft, and when the device is reused, the rotating support is fixed again after the pin shaft is disassembled.

[0012] Furthermore, the free ends of the moving hook and the rotating hook are both set as semi-circular arcs and are tightly engaged with each other.

[0013] Furthermore, the angle of the moving hook is set to form an angle of 3-10° with the horizontal direction.

[0014] Furthermore, the material of the slider is steel or concrete.

[0015] Furthermore, there is one or more connecting supports, all of which are connected to the upper part of the isolation layer, and the connection is a rigid connection.

[0016] In some embodiments, there is one sliding table, one moving hook, and one rotating hook. A stop block is provided between the free end of the rotating hook and the sliding table and the moving hook. The contact surface between the stop block and the rotating hook is semi-circular, and they are closely engaged with each other. When there is no deformation or the deformation is small, the stop block restricts the free end of the rotating hook so that it does not have a horizontal displacement in the direction of the moving hook.

[0017] In some embodiments, there are two sliding tables, two moving hooks, and two rotating hooks. Beneficial effects: The present invention has the following advantages:

[0018] 1) When there is no deformation, the moving hook and the rotating hook are engaged together through a semi-circular structure and are closely attached to the slider. The rotating hook is connected to the upper part of the isolation layer through a support, and the moving hook is connected to the lower part of the isolation layer through a pier. When there is a deformation difference up and down and the deformation is small, due to the close engagement of the hooks, it provides stiffness for the structure and restricts the structural deformation. When the deformation is large, the rotating hook is separated from the slider. Due to the action of its own weight, the rotating hook is separated from the sliding hook. At this time, only the isolation bearing provides stiffness for the structure, and the separation of wind resistance and earthquake resistance can be effectively realized.

[0019] 2) The wind resistance device of the present invention has a simple structure, and is separated by displacement control, with a clear mechanism, easy to implement and produce. It achieves the purpose of variable stiffness at a fixed point, can be reused, and is convenient for maintenance. When the isolation structure resists wind, it is necessary to restrict the structural deformation, so there is a large stiffness requirement for the isolation layer. When resisting earthquake, it is necessary for the bearing to have good deformation and energy dissipation capabilities, so there is a small stiffness requirement for the isolation layer. There is a certain contradiction between the stiffness requirements of wind resistance and earthquake resistance for the isolation layer. The present invention effectively solves the contradiction between the two through the design concept of variable stiffness at a fixed point, making the design of the isolation structure more convenient and the application range wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the reusable unidirectional decoupling wind resistance device of Embodiment 1 of the present invention;

[0021] Figure 2 is a schematic structural diagram of the reusable bidirectional decoupling wind resistance device of Embodiment 2 of the present invention; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Embodiment 1:

[0023] Please refer to Figure 1As shown in the figure, the present invention discloses a reusable decoupling type wind-resistant device, which includes an upper isolation layer 1, a lower isolation layer 2, an isolation bearing 3 disposed between the two, a slider 4, a rotating hook 5 and a moving hook 6; there are two isolation bearings 3, which are respectively arranged at two ends, and the isolation bearing 3 is supported and connected between the upper and lower isolation layers through an upper pier 7 and a lower pier 8; the moving hook 6 is disposed on the lower pier 8 of the isolation bearing 3; the angle of the moving hook 6 is set to form an angle of 3-10° with the horizontal direction. The material of the slider 4 is steel.

[0024] The slider 4 is connected to the lower isolation layer 2, and a connecting support 9 is fixedly arranged below the upper isolation layer 1. The rotating hook 5 is movably connected to the lower end of the connecting support 9 through a pin shaft 10; the free end of the rotating hook 5 is placed on the slider 4, and the whole is in a horizontal state; the pin shaft 10 is a detachable pin shaft, and when the device is reused, the rotating support is fixed again after the pin shaft is removed. The free end of the moving hook 6 is provided with a downward convex structure, and the free ends are all semi-circular arcs and are closely engaged with each other. After the free ends of the moving hook 6 and the rotating hook 5 are engaged, they are placed on the slider 4 together. In the horizontal direction, the contact length between the rotating hook 5 and the slider 4 is determined according to the set separation value;

[0025] Please refer to Figure 1 As shown in the figure, in this embodiment, there is one sliding table 3, one moving hook 6, and one rotating hook 5. A stop block 11 is provided between the free end of the rotating hook 5 and the sliding table 3 and the moving hook 6. The contact surface between the stop block 11 and the rotating hook 5 is a semi-circular arc and is closely engaged with each other. When there is no deformation or the deformation is small, the stop block 11 restricts the free end of the rotating hook 5 from moving horizontally in the direction of the moving hook 6. At this time, there are two connecting supports 9, one is set vertically, and the other is connected to the upper isolation layer at a certain angle with the vertical direction, and the connection is a rigid connection.

[0026] When there is no deformation, the rotating hook 5 is stuck between the moving hook 6, the stop block 11 and the slider 4. The rotating hook 5 is closely engaged with the moving hook 6, and the free end of the rotating hook 5 does not move horizontally in the direction of the moving hook 6;

[0027] When the relative deformation of the isolation layer is caused by the action of wind load, in the initial stage, since the moving hook 6 and the rotating hook 5 are connected together, a lateral stiffness is provided for the structure. When the deformation is too large and exceeds the contact surface between the slider 4 and the rotating hook 5, the rotating hook 5 rotates around the center of the pin shaft 10 under its own weight, so that the moving hook 6 and the rotating hook 5 are disengaged, releasing the lateral stiffness. At this time, only the isolation bearing 3 provides stiffness for the structure. The separation of wind resistance and seismic resistance can be effectively realized.

[0028] The installation steps of the device are as follows:

[0029] First, calculate the deformation under the action of wind load according to the structural model, so as to determine the contact length between the slider 4 and the rotating hook 5 along the length direction of the rotating hook 5, and calculate the area and length of the connecting support, hook and stop block according to the stiffness requirements.

[0030] Secondly, determine the positions of the connecting support 9, the slider 4 and the moving hook 6 according to the size of the isolation layer, and fix them to the structure; then place the rotating hook 5 between the slider 4, the moving hook 6 and the stop block 11; again, fix the rotating hook 5 and the connecting support 9 through the pin shaft 10; finally, after strong wind or earthquake, regularly check the wind-resistant support. When the moving hook 6 is disengaged from the rotating hook 5, remove the pin shaft 10, re-place the rotating hook 5, and then re-place the pin shaft 10. Thus, repeated use is realized.

[0031] Embodiment 2:

[0032] Other implementation manners are the same as those of Embodiment 1, the difference is that, as shown in Figure 2 , in this embodiment, the sliding table 3, the moving hook 6, and the rotating hook 5 are all two. At this time, there are three connecting supports 9, one is set vertically, and the other two are symmetrically set, and are respectively connected to the upper part of the isolation layer at a certain angle with the vertical direction, and the connection is a rigid connection. One end of each of the two rotating hooks 5 is movably connected to the lower ends of a plurality of connecting supports 9 through the pin shaft 10, and extends in two opposite horizontal directions respectively. The two sliding tables 4 and the two moving hooks 6 are symmetrically arranged left and right. When there is no deformation or the deformation is small, the two rotating hooks 5 extending in opposite directions form a balance, and there is no horizontal displacement in the direction of the moving hook 6 on each side.

[0033] When there is no deformation, the rotating hook 5 is stuck between the moving hook 6 and the slider 4. The rotating hook 5 is tightly engaged with the moving hook 6, and the free end of the rotating hook 5 does not have horizontal displacement in the direction of the moving hook 6.

[0034] Due to the bilateral symmetric arrangement, when the wind load moves left and right, one side forms a tensile stiffness, and the other side does not provide stiffness. When the deformation of one side is too large and exceeds the contact surface between the slider 4 and the rotating hook 5, the rotating hook 5 rotates around the center of the pin shaft 10 under its own weight, so that the moving hook 6 is disengaged from the rotating hook 5, and the anti-lateral stiffness of one side is released. Then when the deformation of the other side is too large, the rotating hook on the other side will also be disengaged from the moving hook, so that the stiffness is completely released, and the left and right will be disengaged in batches according to the actual situation. At this time, only the isolation bearing provides stiffness for the structure, and the separation of wind resistance and earthquake resistance can be effectively realized. The purpose of fixed-point variable stiffness is achieved, and it can be reused and is convenient for maintenance.

[0035] The installation steps of the device are as follows:

[0036] First, calculate the deformation under the action of wind load according to the structural model, so as to determine the contact length between the slider 4 and the rotating hook 5 along the length direction of the rotating hook 5, and calculate the area and length of the connecting support and the hook according to the stiffness requirement.

[0037] Secondly, determine the positions of the connecting support 9, the slider 4 and the moving hook 6 according to the size of the isolation layer, and fix them to the structure; then place the rotating hook 5 between the slider 4, the moving hook 6 and the stop block 11; again, fix the rotating hook 5 and the connecting support 9 through the pin shaft 10; finally, after strong wind or earthquake, regularly check the wind resistance support. When the moving hook 6 is disengaged from the rotating hook 5, remove the pin shaft 10, re-place the rotating hook 5, and then re-place the pin shaft 10. Thus, the reuse is realized.

Claims

1. A reusable decoupling type wind resistance device, characterized in that: It includes the upper part of the seismic isolation layer, the lower part of the seismic isolation layer, seismic isolation bearings provided between the two, sliders, rotating hooks and moving hooks; there are two seismic isolation bearings, which are respectively arranged at two ends, and the seismic isolation bearings are supported and connected between the upper and lower seismic isolation layers through upper piers and lower piers; the moving hook is arranged on the lower pier of the seismic isolation bearing; The slider is connected to the lower part of the seismic isolation layer, a connection support is fixedly arranged below the upper part of the seismic isolation layer, and the rotating hook is movably connected to the lower end of the connection support through a pin shaft; the free end of the rotating hook is placed on the slider, and the whole is in a horizontal state; The free end of the moving hook is provided with a downward convex structure, which is engaged with the free end of the rotating hook and then placed on the slider together. In the horizontal direction, the contact length between the rotating hook and the slider is determined according to the set detachment value; When there is no deformation or the deformation is small, the rotating hook and the moving hook are tightly engaged, and the free end of the rotating hook does not have a horizontal displacement in the direction of the moving hook; When the deformation of the wind resistance device reaches a certain degree, the rotating hook has a horizontal displacement in the direction opposite to the moving hook under the action of its own weight and disengages from the slider. At this time, only the seismic isolation bearing provides stiffness for the structure; There is one slider, one moving hook and one rotating hook. A stop block is arranged between the slider and the moving hook at the end of the free end of the rotating hook. The contact surface between the stop block and the rotating hook is semi-circular and they are tightly engaged with each other. When there is no deformation or the deformation is small, the stop block restricts the free end of the rotating hook so that it does not have a horizontal displacement in the direction of the moving hook.

2. The reusable decoupling type wind resistance device according to claim 1, wherein: The pin shaft is a detachable pin shaft. When the device is reused, the rotating support is fixed again after the pin shaft is disassembled.

3. The reusable decoupling type wind resistance device according to claim 1, characterized in that: The free ends of the moving hook and the rotating hook are both set to be semi-circular and are tightly engaged with each other.

4. The reusable decoupling wind-resistant device according to claim 1, wherein: The angle of the moving hook is set to form an angle of 3-10° with the horizontal direction.

5. The reusable decoupling wind-resistant device according to claim 1, characterized in that: The material of the slider is steel or concrete.

6. The reusable decoupling type wind-resistant device according to claim 1, wherein: There is one or more connection supports, all of which are connected to the upper part of the seismic isolation layer, and the connection is a rigid connection.

Images