Multi-directional strong reset shock-absorbing support

Abstract

The application belongs to the technical field of anti-seismic structure, and specifically discloses a multi-directional strong reset shock-absorbing support, which comprises a supporting part, an energy transmission part and a shock-absorbing part. The supporting part is used for supporting a building in the vertical direction. The supporting part comprises an elastic base, a top plate and a bottom plate. The top plate is arranged on the top of the elastic base and is used for being connected with the upper structural member of the building. The bottom plate is arranged on the bottom of the elastic base and is used for being connected with the foundation of the building. The energy transmission part comprises at least one group of turning members. Each of the turning members comprises a cable and a baffle. The shock-absorbing part is in one-to-one correspondence with the turning members and is arranged in a transverse shock-absorbing area. The shock-absorbing part is a deformable structure and has an elastic end which is fixed on the bottom plate and connected with the baffle. The supporting part, the energy transmission part and the shock-absorbing part are integrated to realize the functions of supporting, energy dissipation and resetting, so that the problems, such as the connection of the energy dissipation and shock-absorbing components, in the design process are avoided, and the anti-seismic reinforcement of the existing support shock-absorbing structure is more convenient.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of anti-seismic structures, and particularly relates to a multi-directional strong reset shock-absorbing support. BACKGROUND

[0002] The shock isolation technology is to set a "shock isolation layer" between the foundation and the upper structure of a building by using rubber supports and other shock isolation devices, to consume most of the seismic energy through the deformation and damage of the shock isolation layer, and to only transmit a small amount of energy to the upper structure, which is equivalent to extending the vibration period of the structure itself, so as to ensure that the building does not collapse and is not severely damaged when encountering strong earthquakes, and to effectively reduce the damage caused by earthquakes.

[0003] Under the action of strong earthquakes, the structure is prone to damage and destruction, and the introduction of the support shock isolation technology greatly reduces the seismic damage of the structure body, but strong earthquakes often lead to displacement overrun and excessive residual displacement of the support shock isolation structure, which seriously affects the normal function of the structure after the earthquake. Therefore, taking into account energy dissipation, deformation and reset is the core of improving the seismic toughness of the shock-absorbing structure, and the traditional shock-absorbing support is difficult to meet these requirements.

[0004] Once the traditional shock-absorbing support yields, the post-yield stiffness is small and it is difficult to control the displacement, and the post-earthquake residual displacement is large. At present, the combination of supports and energy-dissipating and limiting components is becoming a research hotspot in the field of structural seismic resistance. The support combination of steel plates and iron plates bends and dissipates seismic energy, but the vertical space of the support installation position is often limited, it is difficult to arrange large-volume steel components, and the steel components lack reset ability; the support combination of shape memory alloy materials dissipates energy and resets, but the mechanical properties of the shape memory alloy materials are greatly affected by the environment temperature, and only when the temperature is higher than a certain value, the shape memory alloy materials exhibit self-resetting characteristics, and the shape memory alloy materials are expensive, and at present, it is difficult to be widely applied in practical engineering; the support combination of viscous dampers dissipates energy, but it lacks self-resetting ability, and there are problems such as oil leakage and maintenance difficulty in practical application. SUMMARY

[0005] In view of the above problems, the purpose of the present application is to provide a multi-directional strong reset shock-absorbing support.

[0006] The technical scheme of the present application is: a multi-directional strong reset shock-absorbing support, comprising:

[0007] a support part for supporting the building in the vertical direction, the support part comprising: an elastic base; a top plate arranged on the top of the elastic base and used for connecting with the upper structural member of the building; and a bottom plate arranged on the bottom of the elastic base and used for connecting with the foundation of the building;

[0008] The energy transmission part comprises at least one set of turning pieces, each of the turning pieces comprises: a cable, two of which are spaced apart, a middle section of the cable is provided with a convex groove, the convex groove is clamped on the top plate, and two ends of the cable are respectively and correspondingly clamped on both sides of the bottom plate; a baffle, two of which are distributed on both sides of the bottom plate, and the baffle is connected with the end of the cable; and the baffle and the cable on one side of the bottom plate form a horizontal damping area.

[0009] The damping part is correspondingly arranged in the horizontal damping area and is in a deformable structure, has an elastic end, is fixed on the bottom plate, and is connected with the baffle.

[0010] Further, the elastic base is a first elastic base, which comprises:

[0011] A rubber plate is placed on the upper surface of the bottom plate.

[0012] A steel backing plate is placed on the upper surface of the rubber plate.

[0013] A Teflon plate is fixed on the upper surface of the steel backing plate.

[0014] A stainless steel plate is placed on the upper surface of the Teflon plate and is fixed on the lower surface of the top plate.

[0015] Further, the rubber plate, the steel backing plate and the Teflon plate are all in a columnar structure.

[0016] Further, the upper surface of the rubber plate is provided with a ring groove, the steel backing plate is provided with a ring-shaped clamping block corresponding to the structure of the ring groove, and the ring-shaped clamping block is clamped on the ring groove.

[0017] Further, the bottom plate is provided with a limiting ring, and the height of the limiting ring is greater than the thickness of the rubber plate.

[0018] The bottom of the rubber plate and the steel backing plate are both placed in the limiting ring, and the limiting ring is used for limiting the rubber plate and the steel backing plate.

[0019] Further, the elastic base is a second elastic base, which is any one of a plate-type rubber support, a pot-type rubber support, a ball-steel support, a high-damping rubber support, a lead-core rubber support and a friction pendulum support.

[0020] Further, the cable comprises:

[0021] A first horizontal section is arranged on the upper surface of the top plate.

[0022] Vertical sections, two of which are connected with the two ends of the first horizontal section, and the vertical sections are perpendicular to the first horizontal section.

[0023] Second transverse section, two, one end of two second transverse sections is connected with the other end of two vertical sections respectively through the two sides of the bottom plate, and the other end of the second transverse section is connected with the baffle; the second transverse section is parallel to the first transverse section.

[0024] Further, the upper surface of the top plate is provided with a limiting groove for limiting the first transverse section.

[0025] Further, the damping part comprises:

[0026] Buckling-restrained tube, one end of which is fixed on the bottom plate and located in the transverse damping area;

[0027] Energy dissipation rod, which is arranged in the buckling-restrained tube, one end of which is fixed on the bottom plate and the other end of which is fixed on the baffle; the length ratio of the energy dissipation rod to the buckling-restrained tube is 1:0.85-0.95.

[0028] Further, a third elastic member is further arranged on the energy dissipation rod, and the third elastic member deforms along with the deformation of the energy dissipation rod.

[0029] The working method of the present application: in order to reduce the structural residual displacement as much as possible, the energy dissipation rod can be pre-compressed during assembly. Under the action of strong earthquake, the top plate has a planar displacement relative to the bottom plate, and the cable of the "Z" shaped structure is stretched, and the horizontal component of the cable gradually increases with the increase of the horizontal displacement, so that the baffle pushes the energy dissipation rod to deform, and the pre-tension of the energy dissipation rod gradually decreases and starts to compress and deform, and when the energy dissipation rod is compressed and yields, the stiffness decreases and starts to play a role of energy dissipation.

[0030] Compared with the prior art, the present application has the advantages that: the present application integrates the support, energy dissipation and reset functions by using the support part, energy transmission part and damping part, avoids the problem that the connection of the energy dissipation damping component needs to be specially designed in the design process, and is more convenient for seismic reinforcement of the existing support isolation structure. Furthermore, the support part of the present application realizes the energy dissipation and reset functions by different components, and the energy dissipation component can be flexibly selected, which has good economy. Therefore, the present application integrates high energy dissipation, large deformation and strong reset function, and has low requirement on the vertical space of the support; the direction adaptability is strong, and can play the role of damping and energy dissipation in multiple directions; the energy dissipation and reset functions are provided by different components, the energy dissipation component can be flexibly selected, and has good economy. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is the overall structure schematic diagram of the present application;

[0032] Figure 2 is the partial structure explosion diagram of embodiment 1 of the present application;

[0033] Figure 3Is the overall structure change figure under strong earthquake of the application, wherein a is the structure schematic diagram before stress, b is the structure schematic diagram after stress;

[0034] Figure 4 Is the structure change figure of the shock absorption part before and after pre-stretching of the shock absorption part during assembly of the application, wherein c is the structure schematic diagram before pre-stretching, d is the structure schematic diagram after pre-stretching.

[0035] Wherein, 1-supporting part, 11-elastic base, 111-rubber plate, 1110-ring groove, 112-steel backing plate, 1120-ring-shaped clamping block, 113-tetrafluoro plate, 114-stainless steel plate, 12-top plate, 120-limiting groove, 13-bottom plate, 130-limiting ring, 2-energy transmission part, 20-turning part, 21-cable, 210-convex groove, 211-first horizontal section, 212-vertical section, 213-second horizontal section, 22-baffle, 3-shock absorption part, 31-buckling-restrained tube, 32-energy dissipation rod, 33-third elastic member. DETAILED DESCRIPTION

[0036] The specific embodiments of the application will be described in detail below with reference to the accompanying drawings. Figure 1 to the accompanying drawings Figure 4 , the specific embodiments of the application will be described in detail. In the description of the application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0037] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; in the description of the application, unless otherwise specified, the meaning of "multiple" is two or more.

[0038] Example 1

[0039] As Figure 1 , Figure 2 indicated, a multi-directional strong reset shock absorption support includes a supporting part 1, an energy transmission part 2 and a shock absorption part 3.

[0040] The support part 1 is used for supporting the building in the vertical direction, and comprises an elastic base 11, a top plate 12 and a bottom plate 13. The top plate 12 is arranged on the top of the elastic base 11 and is used for connecting with the upper structural member of the building. The bottom plate 13 is arranged on the bottom of the elastic base 11 and is used for connecting with the foundation of the building. In the embodiment, the top plate 12 and the bottom plate 13 are respectively fixed to the upper structural member of the building and the foundation of the building through anchor bolts. It should be noted that in the specific engineering application, the size and number of the anchor bolts are selected according to the shear force value.

[0041] The energy transmission part 2 comprises at least one set of turning parts 20. Each of the turning parts 20 comprises a cable 21 and a baffle 22. The two cables 21 are arranged at intervals, and the middle section of each cable 21 is provided with a convex groove 210 which is clamped on the top plate 12. The two ends of each cable 21 are respectively and correspondingly arranged through the two sides of the bottom plate 13. The two baffles 22 are arranged on the two sides of the bottom plate 13, and the baffle 22 is connected with the end of the cable 21. The baffle 22 and the cable 21 on one side of the bottom plate 13 form a transverse damping area. Figure 1 As shown in the figure, the turning part 20 in the embodiment has three sets.

[0042] The damping part 3 is arranged in the transverse damping area and corresponds to the turning part 20. The damping part 3 is a deformable structure and has an elastic end which is fixed to the bottom plate 13 and connected with the baffle 22.

[0043] Preferably, the elastic base 11 is a first elastic base which comprises a rubber plate 111, a steel cushion plate 112, a Teflon plate 113 and a stainless steel plate 114. The rubber plate 111 is arranged on the upper surface of the bottom plate 13. The steel cushion plate 112 is arranged on the upper surface of the rubber plate 111. The Teflon plate 113 is fixed to the upper surface of the steel cushion plate 112. The stainless steel plate 114 is arranged on the upper surface of the Teflon plate 113 and is fixed to the lower surface of the top plate 12.

[0044] The stainless steel plate 114 is adhered to the lower surface of the top plate 12, and the Teflon plate 113 is adhered to the upper surface of the steel cushion plate 112. The stainless steel plate 114 is in contact with the Teflon plate 113, and the low friction coefficient can be achieved during the sliding process of the support.

[0045] Preferably, the rubber plate 111, the steel cushion plate 112 and the Teflon plate 113 are all columnar structures.

[0046] Preferably, the upper surface of the rubber plate 111 is provided with a ring groove 1110, and the steel cushion plate 112 is provided with a ring-shaped clamping block 1120 corresponding to the structure of the ring groove 1110. The ring-shaped clamping block 1120 is clamped on the ring groove 1110.

[0047] Preferably, the bottom plate 13 is provided with a limiting ring 130, and the height of the limiting ring 130 is greater than the thickness of the rubber plate 111.

[0048] The bottoms of the rubber plate 111 and the steel backing plate 112 are both placed in the limiting ring 130 , and the limiting ring 130 is used to limit the rubber plate 111 and the steel backing plate 112 .

[0049] Preferably, the cables 21 include a first transverse section 211, a vertical section 212, and a second transverse section 213. The cables 21 are an integral structure and are made of any one of steel cables, shape memory alloy cables, and carbon fiber cables. This embodiment uses shape memory alloy cables.

[0050] The first transverse section 211 is disposed on the upper surface of the top plate 12. There are two vertical sections 212, one end of each of which is connected to the two ends of the first transverse section 211. The vertical sections 212 are perpendicular to the first transverse section 211, and the protruding groove 210 is formed by the first transverse section 211 and the vertical sections 212. There are two second transverse sections 213, one end of each of which passes through both sides of the bottom plate 13 and connects to the other end of the two vertical sections 212 in a one-to-one correspondence. The other end of each second transverse section 213 is connected to the baffle 22. The second transverse sections 213 are parallel to the first transverse section 211.

[0051] Preferably, a limiting groove 120 for limiting the first transverse section 211 is provided on the upper surface of the top plate 12 .

[0052] like Figure 1 As shown, anchor plates are provided on both sides of the base plate 13 and are anchored to the base plate 13 via bolts. The anchor plates are provided with through-holes corresponding in position and number to the second transverse segments 213, with the through-holes passing through the second transverse segments 213. During implementation, the cables 21 are arranged sequentially and the first transverse segments 211 are placed in the retaining grooves 120. The anchor plates are then anchored to the base plate 13 via bolts, ensuring that each second transverse segment 213 passes through the through-holes. The other ends of the second transverse segments 213 are anchored to the baffle 22 via nuts.

[0053] Preferably, the shock absorber 3 includes an anti-buckling sleeve 31 and an energy-absorbing rod 32. One end of the anti-buckling sleeve 31 is fixed to the base plate 13 and located within the lateral shock-absorbing area. The energy-absorbing rod 32 extends through the anti-buckling sleeve 31, with one end fixed to the base plate 13 and the other end fixed to the baffle 22. The ratio of the length of the energy-absorbing rod 32 to the length of the anti-buckling sleeve 31 is 1:0.85-0.95. The energy-absorbing rod 32 is made of any one of steel, iron-based materials, and nickel-titanium shape memory alloy. In this embodiment, nickel-titanium shape memory alloy is used.

[0054] Preferably, a third elastic member 33 is sleeved on the energy dissipation rod 32. The third elastic member 33 deforms in response to the deformation of the energy dissipation rod 32. In this embodiment, the third elastic member 33 is a disc spring. It should be noted that the third elastic member 33 can also be a tension or compression spring, and the optional assembly is based on actual needs.

[0055] The working principle of the above embodiment is:

[0056] like Figure 4 As shown, in order to reduce the residual displacement of the structure as much as possible, the energy-absorbing rod 32 and the third elastic member 33 may be pre-compressed during the assembly process.

[0057] Under strong earthquakes, such as Figure 3 As shown, the top plate 12 undergoes planar displacement relative to the bottom plate 13. As the "J"-shaped cable 21 is stretched, the horizontal component of the cable 21 gradually increases as the horizontal displacement increases, forcing the baffle 22 to push the energy-absorbing rod 32 and the third elastic member 33 to deform. The pretension of the energy-absorbing rod 32 gradually decreases and begins to compress and deform. The disc spring 8 compresses on the basis of the preload. When the energy-absorbing rod 32 yields after compression, its stiffness decreases and it begins to dissipate energy. At this time, the third elastic member 33 still maintains its elastic stiffness to limit the displacement of the support. When the device begins to reverse, the third elastic member 33 maintains its stiffness and begins to gradually extend. The energy-absorbing rod 32 has a residual displacement after elastic unloading. Since the energy-absorbing rod 32 and the third elastic member 33 are connected in parallel, the third elastic member 33 begins to stretch the energy-absorbing rod 32, thereby maintaining the same displacement for both.

[0058] It can be found that the third elastic members 33 can be combined in series and parallel to provide large displacement, strong constraint and restoring force, and the energy dissipation rod 32 has a full hysteresis loop after strong compression and appropriate stretching, thereby achieving high energy dissipation.

[0059] It should be noted that the multi-directional strong reset shock-absorbing support proposed in this embodiment is for use alone, and can also be used in combination with energy-consuming and reset components in actual use.

[0060] Example 2

[0061] The difference from Example 2 is that:

[0062] Preferably, the elastic base 11 adopts a second elastic base, and the second elastic base adopts any one of a plate rubber bearing, a pot rubber bearing, a ball steel bearing, a high damping rubber bearing, a lead core rubber bearing and a friction pendulum bearing.

[0063] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application, and it should be understood that the above-described specific embodiments are merely examples of the present application and do not limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A multi-directional strong reset shock-absorbing support, characterized in that: include: The support part (1) is used to support the building in the vertical direction. The support part (1) comprises: an elastic base (11); a top plate (12) arranged on the top of the elastic base (11) and used to be connected to the upper structural member of the building; and a bottom plate (13) arranged on the bottom of the elastic base (11) and used to be connected to the foundation of the building. The energy transmission part (2) includes at least one group of steering members (20), wherein the steering members (20) include: two cables (21), which are spaced apart, and a convex groove (210) is provided in the middle section of the cables (21), which is clamped on the top plate (12), and the two ends of the cables (21) are respectively and one-to-one passed through the two sides of the bottom plate (13); there are two baffles (22), which are distributed on both sides of the bottom plate (13), and the baffles (22) are connected to the ends of the cables (21); the baffles (22) on one side of the bottom plate (13) and the cables (21) constitute a lateral shock absorption area; The shock absorbing part (3) corresponds to the steering member (20) one by one and is arranged in the lateral shock absorbing area. The shock absorbing part (3) is a deformable structure and has an elastic end which is fixed on the bottom plate (13). The elastic end is connected to the baffle (22).

2. A multi-directional strong reset shock-absorbing support according to claim 1, characterized in that: The elastic base (11) adopts a first elastic base, and the first elastic base includes: A rubber plate (111) is placed on the upper surface of the bottom plate (13); A steel backing plate (112) is placed on the upper surface of the rubber plate (111); A PTFE plate (113) is fixed on the upper surface of the steel backing plate (112); The stainless steel plate (114) is placed on the upper surface of the tetrafluoroethylene plate (113), and the stainless steel plate (114) is fixed on the lower surface of the top plate (12).

3. The multi-directional strong reset shock-absorbing support according to claim 2, characterized in that: The rubber plate (111), the steel backing plate (112), and the polytetrafluoroethylene plate (113) are all columnar structures.

4. The multi-directional strong reset shock-absorbing support according to claim 3, characterized in that: The upper surface of the rubber plate (111) is provided with an annular groove (1110), and the steel backing plate (112) is provided with an annular clamping block (1120) corresponding to the structure of the annular groove (1110), and the annular clamping block (1120) is clamped on the annular groove (1110).

5. The multi-directional strong reset shock-absorbing support according to claim 3, characterized in that: A limiting ring (130) is provided on the bottom plate (13), and the height of the limiting ring (130) is greater than the thickness of the rubber plate (111); the bottoms of the rubber plate (111) and the steel backing plate (112) are both placed in the limiting ring (130), and the limiting ring (130) is used to limit the rubber plate (111) and the steel backing plate (112).

6. The multi-directional strong reset shock-absorbing support according to claim 1, characterized in that: The elastic base (11) adopts a second elastic base, and the second elastic base adopts any one of a plate rubber bearing, a pot rubber bearing, a ball steel bearing, a high damping rubber bearing, a lead core rubber bearing and a friction pendulum bearing.

7. The multi-directional strong reset shock-absorbing support according to claim 1, characterized in that: The cables (21) all include: A first transverse section (211) is arranged on the upper surface of the top plate (12); There are two vertical sections (212), one end of each of the two vertical sections (212) is connected to both ends of the first transverse section (211), and the vertical sections (212) are perpendicular to the first transverse section (211); the convex groove (210) is composed of the first transverse section (211) and the vertical sections (212); There are two second transverse sections (213), one end of each of the two second transverse sections (213) passes through both sides of the bottom plate (13) and is connected to the other ends of the two vertical sections (212) in a one-to-one correspondence, and the other end of the second transverse section (213) is connected to the baffle (22); the second transverse section (213) is parallel to the first transverse section (211).

8. The multi-directional strong reset shock-absorbing support according to claim 7, characterized in that: The upper surface of the top plate (12) is provided with a limiting groove (120) for limiting the first transverse section (211).

9. The multi-directional strong reset shock-absorbing support according to claim 1, characterized in that: The shock absorbing part (3) comprises: An anti-buckling sleeve (31), one end of which is fixed to the bottom plate (13) and is located in the lateral shock absorption area; The energy dissipation rod (32) is inserted into the anti-buckling sleeve (31), one end of which is fixed on the bottom plate (13) and the other end of which is fixed on the baffle (22); the ratio of the length of the energy dissipation rod (32) to the length of the anti-buckling sleeve (31) is 1:0.85-0.

95.

10. The multi-directional strong reset shock-absorbing support according to claim 9, characterized in that: The energy-dissipating rod (32) is also sleeved with a third elastic member (33), and the third elastic member (33) deforms along with the deformation of the energy-dissipating rod (32).

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