Multi-directional strong reset damping support

Abstract

The invention belongs to the technical field of anti-seismic structures, and particularly discloses a multidirectional strong-reset damping support which comprises a supporting part, an energy transfer part and a damping part, the supporting part is used for supporting a building in the vertical direction and comprises an elastic base, a top plate and a bottom plate, the top plate is arranged at the top of the elastic base and used for being connected with an upper structural part of the building, and the bottom plate is arranged at the bottom of the elastic base. The bottom plate is arranged at the bottom of the elastic base and used for being connected with a foundation of a building. The energy transmission part comprises at least one set of steering parts, and each steering part comprises an inhaul cable and a baffle. The damping parts are in one-to-one correspondence with the steering parts and arranged in the transverse damping area, each damping part is of a deformable structure, is provided with an elastic end and is fixed to the bottom plate, and the elastic ends are connected with the baffles. The supporting part, the energy transfer part and the shock absorption part are utilized to integrate supporting, energy dissipation and reset functions, the problem that connection of energy dissipation and shock absorption components needs to be specially designed in the design process is solved, and more convenient anti-seismic reinforcement is carried out on an existing shock absorption and isolation structure adopting a support.

Description

Technical Field

[0001] The invention belongs to the technical field of earthquake-resistant structures, and in particular relates to a multi-directional strong reset shock-absorbing support. Background Art

[0002] Seismic isolation technology is to set up an "isolation layer" between the foundation and superstructure of a building using rubber bearings and other seismic isolation devices. Most of the earthquake energy is consumed through the deformation and damage of the isolation layer, and only a small part of the energy is transmitted to the upper structure, which is equivalent to extending the vibration period of the structure itself, ensuring that the building will not collapse or be severely damaged when encountering a strong earthquake, effectively reducing the damage caused by the earthquake.

[0003] Structures are prone to damage under strong earthquakes. The introduction of bearing isolation technology has greatly reduced the earthquake damage to the main structure, but strong earthquakes often lead to excessive displacement of bearing isolation structures and excessive residual displacement, which seriously affects the normal function of the structure after the earthquake. Therefore, taking into account energy consumption, deformation and reset is the core of improving the seismic toughness of seismic isolation structures, and traditional seismic isolation bearings are difficult to meet these requirements.

[0004] Once the traditional seismic isolation bearing yields, the post-yield stiffness is small and the displacement is difficult to control, and the residual displacement after the earthquake is large. At present, the combination of bearings and energy-absorbing and limiting components is becoming a research hotspot in the field of structural seismic resistance. The bearing combination steel plate and iron base plate bend to dissipate seismic energy, but the vertical space of the bearing installation site is often limited, making it difficult to arrange large-volume steel components, and the steel components lack the ability to reset; the bearing combination shape memory alloy material dissipates energy and resets, but the mechanical properties of shape memory alloy materials are greatly affected by the ambient temperature. Only when the temperature is higher than a certain value will it show self-resetting characteristics, and it is expensive, so it is currently difficult to apply it to actual projects on a large scale; the bearing combination viscous damper dissipates energy, but it lacks self-resetting ability, and there are problems such as oil leakage and maintenance difficulties in actual applications. Summary of the invention

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

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

[0007] The support part is used to support the building vertically, and the support part includes: an elastic base; a top plate, which is arranged on the top of the elastic base and is used to connect with the upper structure of the building; a bottom plate, which is arranged at the bottom of the elastic base and is used to connect with the foundation of the building;

[0008] The energy transmission part includes at least one group of steering parts, and the steering parts include: two cables, which are arranged at intervals, and the middle section of the cables is provided with a convex groove, which is clamped on the top plate, and the two ends of the cables are respectively passed through the two sides of the bottom plate in a one-to-one correspondence; there are two baffles, which are distributed on both sides of the bottom plate, and the baffles are connected to the ends of the cables; the baffles on one side of the bottom plate and the cables constitute a lateral shock absorbing area;

[0009] The shock absorbing part corresponds to the steering member one by one and is arranged in the lateral 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 to the baffle.

[0010] Furthermore, the elastic base adopts a first elastic base, and the first elastic base includes:

[0011] A rubber sheet, placed on the upper surface of the base plate;

[0012] Steel pad, placed on the upper surface of the rubber sheet;

[0013] PTFE plate, fixed on the upper surface of the steel backing plate;

[0014] The stainless steel plate is placed on the upper surface of the PTFE plate, and the stainless steel plate is fixed on the lower surface of the top plate.

[0015] Furthermore, the rubber plate, steel pad and polytetrafluoroethylene plate are all columnar structures.

[0016] Furthermore, an annular groove is arranged on the upper surface of the rubber plate, and an annular clamping block corresponding to the annular groove structure is arranged on the steel pad, and the annular clamping block is clamped on the annular groove.

[0017] Furthermore, a limiting ring is provided on the bottom plate, and the height of the limiting ring is greater than the thickness of the rubber plate;

[0018] The bottoms of the rubber plate and the steel pad are both placed in the limiting ring, and the limiting ring is used to limit the rubber plate and the steel pad.

[0019] Furthermore, the elastic base 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.

[0020] Furthermore, the cables include:

[0021] A first transverse section is arranged on the upper surface of the top plate;

[0022] There are two vertical sections, one end of each of which is connected to the two ends of the first transverse section respectively, and the vertical sections are perpendicular to the first transverse section; the convex groove is formed by the first transverse section and the vertical sections;

[0023] There are two second transverse sections, one end of each of which passes through the two sides of the bottom plate and is connected to the other end of each of the two vertical sections in a one-to-one correspondence, and the other end of each second transverse section is connected to the baffle; the second transverse section is parallel to the first transverse section.

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

[0025] Furthermore, the shock absorbing part comprises:

[0026] An anti-buckling sleeve, one end of which is fixed to the base plate and is located in the lateral shock absorption area;

[0027] The energy-absorbing rod is passed through the anti-buckling sleeve, one end of which is fixed on the bottom plate, and the other end is fixed on the baffle; the ratio of the length of the energy-absorbing rod to the length of the anti-buckling sleeve is 1:0.85-0.95.

[0028] Furthermore, a third elastic member is sleeved 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 invention: in order to reduce the residual displacement of the structure as much as possible, the energy-absorbing rod can be pre-compressed during the assembly process. Under the action of a strong earthquake, the top plate undergoes a plane displacement relative to the bottom plate. During the stretching process of the "J"-shaped cable, the horizontal component of the cable gradually increases with the increase of the horizontal displacement, forcing the baffle to push the energy-absorbing rod to deform. The pre-tension of the energy-absorbing rod gradually decreases and begins to compress and deform. When the energy-absorbing rod yields after compression, the stiffness decreases and begins to play an energy-absorbing role.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention utilizes the support part, the energy transmission part and the shock absorbing part to integrate the support, energy consumption and reset functions into one, avoiding the problem of the connection of the energy consumption and shock absorbing components that need to be specially designed during the design process, and more conveniently strengthening the seismic resistance of the existing support isolation structure. Furthermore, the support part of the present invention realizes the energy consumption and reset functions through different components, and the energy consumption components can be flexibly selected, which has good economy. Therefore, the present invention integrates high energy consumption, large deformation and strong reset functions, and has low requirements for the vertical space of the support; it has strong directional adaptability and can play a role in shock absorption and energy consumption in multiple directions; the energy consumption and reset functions are provided by different components, and the energy consumption components can be flexibly selected, which has good economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 is an exploded view of a local structure of Example 1 of the present invention;

[0033] Figure 3It is a diagram of the overall structural change of the present invention under the action of a strong earthquake, wherein a is a schematic diagram of the structure before the force is applied, and b is a schematic diagram of the structure after the force is applied;

[0034] Figure 4 It is a diagram showing the structural changes of the shock absorbing part before and after the shock absorbing part is pre-stretched during assembly of the present invention, wherein c is a schematic diagram of the structure before pre-stretching, and d is a schematic diagram of the structure after pre-stretching.

[0035] Among them, 1-support part, 11-elastic base, 111-rubber plate, 1110-annular groove, 112-steel pad, 1120-annular block, 113-PTFE plate, 114-stainless steel plate, 12-top plate, 120-limiting groove, 13-bottom plate, 130-limiting ring, 2-energy transmission part, 20-steering member, 21-cable, 210-convex groove, 211-first horizontal section, 212-vertical section, 213-second horizontal section, 22-baffle, 3-shock absorbing part, 31-anti-buckling sleeve, 32-energy absorption rod, 33-third elastic member. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1 To the attached Figure 4 , the specific implementation methods of the present invention are described in detail. In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0038] Example 1

[0039] like Figure 1 , Figure 2 A multi-directional strong reset shock-absorbing support shown includes a supporting part 1, an energy transmission part 2 and a shock-absorbing part 3.

[0040] The support part 1 is used to support the building vertically. The support part 1 includes 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 to connect with the upper structure of the building. The bottom plate 13 is arranged at the bottom of the elastic base 11 and is used to connect with the foundation of the building. In this embodiment, the top plate 12 and the bottom plate 13 are respectively fixed to the upper structure of the building and the foundation of the building through anchor bolts. It should be noted that in specific engineering applications, the size and number of the anchor bolts are selected according to the shear force value to be transmitted.

[0041] The energy transmission part 2 includes at least one group of steering members 20, each of which includes a cable 21 and a baffle 22. There are two cables 21, which are spaced apart. A convex groove 210 is provided in the middle section of the cable 21, and the convex groove 210 is clamped on the top plate 12. The two ends of the cable 21 are respectively and one by 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 and the cables 21 on one side of the bottom plate 13 constitute a lateral shock absorbing area. Figure 1 As shown, the steering members 20 of this embodiment have three groups.

[0042] 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 with an elastic end fixed on the bottom plate 13 , and the elastic end is connected to the baffle 22 .

[0043] Preferably, the elastic base 11 adopts a first elastic base, which includes a rubber plate 111, a steel pad 112, a polytetrafluoroethylene plate 113 and a stainless steel plate 114. The rubber plate 111 is placed on the upper surface of the bottom plate 13, the steel pad 112 is placed on the upper surface of the rubber plate 111, the polytetrafluoroethylene plate 113 is fixed on the upper surface of the steel pad 112, the stainless steel plate 114 is placed on the upper surface of the polytetrafluoroethylene plate 113, and the stainless steel plate 114 is fixed on 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 polytetrafluoroethylene plate 113 is adhered to the upper surface of the steel backing plate 112. The stainless steel plate 114 is in contact with the polytetrafluoroethylene plate 113, which can achieve a low friction coefficient during the sliding process of the support.

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

[0046] Preferably, an annular groove 1110 is provided on the upper surface of the rubber plate 111 , and an annular clamping block 1120 corresponding to the structure of the annular groove 1110 is provided on the steel backing plate 112 , and the annular clamping block 1120 is clamped on the annular groove 1110 .

[0047] Preferably, 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;

[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 integrated 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 arranged on the upper surface of the top plate 12. There are two vertical sections 212, one end of the two vertical sections 212 is respectively connected to the two ends of the first transverse section 211, the vertical section 212 is perpendicular to the first transverse section 211, and the convex groove 210 is composed of the first transverse section 211 and the vertical section 212. There are two second transverse sections 213, one end of the two second transverse sections 213 is respectively passed through the two sides of the bottom plate 13 and connected to the other end 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.

[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 bottom plate 13, and the anchor plates are anchored on the bottom plate 13 by bolts. The anchor plates are provided with through holes corresponding to the positions and numbers of the second transverse sections 213, and the through holes penetrate the second transverse sections 213. During implementation, the cables 21 are arranged in sequence and the first transverse sections 211 are placed in the limiting grooves 120, and then the anchor plates are anchored on the bottom plate 13 by bolts so that each second transverse section 213 penetrates the through holes, and the other end of the second transverse section 213 is anchored on the baffle 22 by a nut.

[0053] Preferably, the shock absorbing part 3 includes an anti-buckling sleeve 31 and an energy absorbing rod 32. One end of the anti-buckling sleeve 31 is fixed on the bottom plate 13 and is located in the lateral shock absorbing area. The energy absorbing 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 absorbing rod 32 to the length of the anti-buckling sleeve 31 is 1:0.85-0.95. Among them, the energy absorbing rod 32 is made of any one of steel, iron-based material, and nickel-titanium shape memory alloy material. In this embodiment, the nickel-titanium shape memory alloy material is used.

[0054] Preferably, the energy dissipation rod 32 is also sleeved with a third elastic member 33, and the third elastic member 33 deforms with 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, which can be selectively assembled according to 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, Figure 3 As shown, the top plate 12 undergoes a plane displacement relative to the bottom plate 13. During the stretching process of the "J"-shaped cable 21, the horizontal component of the cable 21 gradually increases with the increase of horizontal displacement, forcing the baffle 22 to push the energy-absorbing rod 32 and the third elastic member 33 to deform together. The pre-tension of the energy-absorbing rod 32 gradually decreases and begins to be compressed and deformed. The disc spring 8 is compressed on the basis of pre-stressing. When the energy-absorbing rod 32 yields after compression, the stiffness decreases and begins to play an energy-absorbing role. At this time, the third elastic member 33 still maintains elastic stiffness to limit the displacement of the support; when the device starts to move in the reverse direction, the third elastic member 33 maintains the same stiffness and begins to gradually stretch back. The energy-absorbing rod 32 has a residual displacement after elastic unloading. Since the energy-absorbing rod 32 is connected in parallel with the third elastic member 33, the third elastic member 33 begins to stretch the energy-absorbing rod 32 to keep the same displacement of the two.

[0058] It can be found that the third elastic member 33 can be combined in series and parallel to provide large displacement and 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 used 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 specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.

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, and 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 structure 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) comprises at least one group of steering members (20), wherein the steering members (20) each comprise: two cables (21), which are arranged at intervals, a convex groove (210) being provided in the middle section of the cables (21), the convex groove (210) being clamped on the top plate (12), and two ends of the cables (21) being respectively and one-to-one passed through two sides of the bottom plate (13); two baffles (22), which are arranged on two 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 absorbing 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 as claimed in claim 1, characterized in that: The elastic base (11) adopts a first elastic base, and the first elastic base comprises: 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 polytetrafluoroethylene 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 polytetrafluoroethylene plate (113), and the stainless steel plate (114) is fixed on the lower surface of the top plate (12).

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

4. A multi-directional strong reset shock-absorbing support as claimed in claim 3, characterized in that: The upper surface of the rubber plate (111) is provided with an annular groove (1110), and the steel pad (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 as claimed in 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 pad (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 pad (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-type rubber bearing, a pot-type 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 two 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 section (212); There are two second transverse sections (213), one end of each of which passes through two 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 each of the second transverse sections (213) is connected to the baffle (22); the second transverse section (213) is parallel to the first transverse section (211).

8. A multi-directional strong reset shock-absorbing support as claimed in claim 7, characterized in that: The upper surface of the top plate (12) is provided with a limiting groove (120) for limiting the position of 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 absorbing 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 plate (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. A multi-directional strong reset shock-absorbing support as claimed in claim 9, characterized in that: The energy dissipation 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 dissipation rod (32).

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