Tensile-resistant hyperboloidal seismic mitigation energy dissipation bearing

Abstract

The application provides a tension-resistant hyperbolic shock-absorbing energy-dissipating support, which comprises a hyperbolic shock-absorbing support, and a corrugated pipe for vertical tension resistance is additionally arranged between an upper seat plate and a lower seat plate in the hyperbolic shock-absorbing support; the corrugated pipe is in an axial symmetry structure, and an upper end of the corrugated pipe is fixedly sleeved on the upper seat plate and a lower end of the corrugated pipe is fixedly sleeved on the lower seat plate. The tension-resistant hyperbolic shock-absorbing energy-dissipating support improves the horizontal energy-dissipating capacity of the support and simultaneously provides vertical tension resistance on the basis of the existing hyperbolic shock-absorbing support.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of structural seismic resistance, in particular to a tension-resistant hyperboloidal seismic mitigation and energy dissipation support. BACKGROUND

[0002] China is a country with frequent earthquake disasters. In recent decades, under the background of the development of infrastructure in China, the problem of seismic resistance of engineering structures has been paid more and more attention. The most commonly used method of seismic resistance is to use seismic mitigation technology. Seismic mitigation technology mainly reduces the natural frequency of the structure, increases the damping of the structure, and disperses the seismic force by setting seismic mitigation supports in the structure, thereby improving the overall seismic performance of the engineering structure. Commonly used seismic mitigation supports mainly include lead rubber bearings, high-damping rubber bearings, and hyperboloidal seismic mitigation supports. Among them, the hyperboloidal seismic mitigation support has good seismic mitigation function, stable post-earthquake sliding stiffness, and good self-resetting performance, and is currently the most widely used in engineering structures using seismic mitigation technology. However, its damping performance is mainly realized by Coulomb friction damping, and due to the limited friction coefficient, its energy dissipation capacity is relatively small.

[0003] The seismic mitigation supports with tension resistance function currently applied to engineering structures mainly include natural rubber bearings, lead rubber bearings, and cast steel spherical bearings. These supports can provide some protection to the structure under the influence of earthquakes or other external forces, but still have many shortcomings. For example, the natural rubber bearing has small bearing capacity, poor durability, and high maintenance and maintenance costs. Although the lead rubber bearing has a certain damping effect, in addition to the above-mentioned shortcomings of the natural rubber bearing, lead as a heavy metal also causes serious environmental pollution and does not meet environmental protection requirements. The cast steel spherical bearing has large bearing capacity, but generally does not have seismic mitigation function, and ordinary cast steel spherical bearings are difficult to achieve free rotation and sliding under tension. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide a tension-resistant hyperboloidal seismic mitigation and energy dissipation support, which improves the horizontal energy dissipation capacity of the existing hyperboloidal seismic mitigation support and provides vertical tension resistance at the same time.

[0005] To solve the above technical problems, the present application provides a tension-resistant hyperboloidal seismic mitigation and energy dissipation support, which comprises a hyperboloidal seismic mitigation support, and a corrugated pipe for vertical tension resistance is additionally arranged between the upper seat plate and the lower seat plate of the hyperboloidal seismic mitigation support. The corrugated pipe has an axisymmetric structure, and its upper end is fixedly sleeved on the upper seat plate and its lower end is fixedly sleeved on the lower seat plate.

[0006] Preferably, between the upper seat plate and the lower seat plate, the double-curved surface seismic mitigation and isolation support further comprises, from top to bottom, an upper spherical surface stainless steel plate, an upper spherical surface non-metal sliding plate, a middle seat plate, a lower spherical surface non-metal sliding plate, and a lower spherical surface stainless steel plate, the middle seat plate also has an axis of symmetry, and the axis of symmetry is coaxial with the axis of symmetry of the bellows.

[0007] Preferably, at the fixed sleeve joint of the bellows, the lower cylindrical diameter of the upper seat plate is equal to the upper cylindrical diameter of the lower seat plate, and is also equal to the inner diameter of the bellows.

[0008] Preferably, the inner diameter of the bellows is greater than the vertical projection diameter of the middle seat plate.

[0009] Preferably, the internal gap between the bellows and the middle seat plate is greater than the space required for the sliding of the middle seat plate to the designed displacement and vertical rotation.

[0010] Preferably, the seismic mitigation and energy dissipation support is a horizontal isotropic structure, so that the seismic mitigation and isolation performance is consistent at any azimuth in the horizontal direction.

[0011] Preferably, the lower surface of the upper seat plate is a concave spherical surface and is welded with the upper spherical surface stainless steel plate, and the upper surface of the lower seat plate is a concave spherical surface and is welded with the lower spherical surface stainless steel plate.

[0012] Preferably, the upper surface of the middle seat plate is a convex spherical surface and is inlaid with the upper spherical surface non-metal sliding plate, and the lower surface of the middle seat plate is a convex spherical surface and is inlaid with the lower spherical surface non-metal sliding plate.

[0013] Preferably, the vertical projection diameter of the upper spherical surface stainless steel plate is greater than the vertical projection diameter of the upper spherical surface non-metal sliding plate, and the vertical projection diameter of the lower spherical surface stainless steel plate is greater than the vertical projection diameter of the lower spherical surface non-metal sliding plate.

[0014] Preferably, the vertical projection of any one of the upper spherical surface stainless steel plate and the lower spherical surface stainless steel plate completely covers the space required for the sliding of the upper spherical surface non-metal sliding plate or the lower spherical surface non-metal sliding plate to the designed displacement and vertical rotation.

[0015] Compared with the prior art, the anti-tension double-curved surface seismic mitigation and energy dissipation support has the following beneficial effects:

[0016] 1) By adding a bellows structure to the existing double-curved surface seismic mitigation and isolation support, the horizontal energy dissipation capacity of the support is improved, and vertical tensile capacity is also provided;

[0017] 2) The pendulum principle and the horizontal stiffness of the corrugated pipe are used to prolong the natural vibration period of the superstructure of the support, which plays a horizontal isolation role. At the same time, the sliding friction of the spherical surface of the support and the oblique tensile deformation of the corrugated pipe generate damping force to realize energy dissipation, which plays a horizontal shock absorption role. The two realize the horizontal shock isolation function of the support.

[0018] 3) The support is an isotropic structure in the horizontal direction, and the shock isolation performance is consistent in any direction in the horizontal direction.

[0019] 4) The support has vertical tensile function at zero displacement and in any sliding process in the horizontal direction.

[0020] 5) The corrugated pipe structure connects the upper and lower seat plates of the support, which not only transmits force but also has dustproof and waterproof effects, reduces damage to the support structure caused by external environment, and also has a certain fireproof effect.

[0021] 6) The support structure is simple, and compared with the existing tensile shock isolation energy dissipation support, the weight is light, and the economic efficiency of the support is obviously improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which form a part of this application, are intended to provide further understanding of the application and are incorporated herein in their entirety. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 is a half-sectional structure schematic diagram of a tensile hyperboloidal shock isolation energy dissipation support described in embodiment 1 of the present application;

[0024] Figure 2 is Figure 1 is a sectional structure schematic diagram along its A-A section.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1-upper seat plate, 2-upper spherical non-metal sliding plate, 3-upper spherical stainless steel plate, 4-corrugated pipe, 5-middle seat plate, 6-lower spherical non-metal sliding plate, 7-lower spherical stainless steel plate, 8-lower seat plate. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, technical solutions and advantages of the present application more clear and easy to understand, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments of the present application described herein are only part of the embodiments of the present application, which are only used to explain the present application and do not constitute a limitation on the present application. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0028] Embodiment 1

[0029] Referring to Figures 1-2 As shown in the drawings, the present application provides a tension-resistant hyperbolic seismic mitigation energy dissipation support, comprising a hyperbolic seismic mitigation support, and a corrugated pipe 4 for vertical tension resistance is additionally arranged between an upper seat plate 1 and a lower seat plate 8 in the hyperbolic seismic mitigation support, wherein the corrugated pipe 4 is of an axisymmetric structure, and the upper end of the corrugated pipe 4 is fixedly sleeved on the upper seat plate 1, and the lower end of the corrugated pipe 4 is fixedly sleeved on the lower seat plate 8.

[0030] Specifically, the hyperbolic seismic mitigation support can realize the functions of vertical bearing, horizontal sliding and vertical rotation, and in the present application, the corrugated pipe structure is additionally arranged on the basis of the existing hyperbolic seismic mitigation support, and the corrugated pipe structure will also participate in and jointly realize the functions of vertical bearing, horizontal sliding and vertical rotation of the hyperbolic seismic mitigation support. Since the corrugated pipe structure also has good tension and compression self-resetting capability and good energy dissipation and seismic mitigation performance, in the tension-resistant hyperbolic seismic mitigation energy dissipation support described in the present application, not only the horizontal stiffness of the pendulum principle and the corrugated pipe 4 can be used to jointly act to prolong the natural vibration period of the upper structure of the support, thereby playing a horizontal seismic mitigation role, but also the sliding friction of the spherical surface of the support and the damping force generated by the oblique tensile deformation of the corrugated pipe 4 can be used to jointly realize energy dissipation, thereby playing a horizontal seismic mitigation role. Thus, in the present application, the two are combined to realize the horizontal seismic mitigation function of the support. That is, through the tension-resistant hyperbolic seismic mitigation energy dissipation support described in the present application, the horizontal energy dissipation capability of the support can be improved while providing vertical tension resistance.

[0031] Of course, in the present application, since the corrugated pipe 4 has dustproof and waterproof effects while transmitting force, it can further reduce the damage to the support body structure caused by the erosion of the external environment, and the corrugated pipe 4 itself also has a certain fireproof effect. In addition, the tension-resistant hyperbolic seismic mitigation energy dissipation support (hereinafter referred to as "seismic mitigation energy dissipation support") described in the present application has a simple structure, and compared with the existing tension-resistant seismic mitigation energy dissipation support, it is light in weight and has obvious improvement in economic efficiency.

[0032] Preferably, between the upper seat plate 1 and the lower seat plate 8, the hyperbolic seismic mitigation support further comprises, from top to bottom, an upper spherical stainless steel plate 3, an upper spherical non-metal sliding plate 2, a middle seat plate 5, a lower spherical non-metal sliding plate 6, and a lower spherical stainless steel plate 7, and the middle seat plate 5 is also of an axisymmetric structure, and the axis of symmetry of the middle seat plate 5 is arranged in coincidence with the axis of symmetry of the corrugated pipe 4.

[0033] Specifically, in the prior art, the middle seat plate 5 is usually of an axisymmetric structure, and in the present application, the structure of the hyperbolic seismic mitigation support is arranged such that the axis of symmetry of the corrugated pipe 4 is arranged in coincidence with the axis of symmetry of the middle seat plate 5 on the basis of the known connection according to the prior art.

[0034] Preferably, at the fixed sleeve joint of the bellows 4, the lower cylindrical diameter of the upper seat plate 1 is equal to the upper cylindrical diameter of the lower seat plate 8, and also equal to the inner diameter of the bellows 4.

[0035] Specifically, in the field of engineering structure anti-seismic, the upper seat plate 1 of the present application can be used to connect with the beam body, and the lower seat plate 8 can be used to connect with the pier. In order to meet the fixed sleeve joint requirement of the bellows 4, the inner diameter of the bellows 4 can be equal to the lower cylindrical diameter of the upper seat plate 1 and the upper cylindrical diameter of the lower seat plate 8. Further, the inner diameter of the bellows 4 is greater than the vertical projection diameter of the middle seat plate 5. Further, the internal gap between the bellows 4 and the middle seat plate 5 is slightly greater than the space required for the sliding of the middle seat plate 5 to the designed displacement and vertical rotation.

[0036] Preferably, the seismic mitigation energy dissipation support is a horizontal isotropic structure, so that the seismic mitigation performance is consistent at any horizontal direction.

[0037] Specifically, in the multi-directional movable support, when the hyperbolic seismic mitigation support is a horizontal isotropic structure, the seismic mitigation energy dissipation support of the present application will also be a horizontal isotropic structure, so that the seismic mitigation performance of the seismic mitigation energy dissipation support is consistent at any horizontal direction; at the same time, the seismic mitigation energy dissipation support also has vertical tensile function at zero displacement and during any horizontal sliding process.

[0038] Preferably, the lower surface of the upper seat plate 1 is a concave spherical surface and welded with the upper spherical stainless steel plate 3, and the upper surface of the lower seat plate 8 is a concave spherical surface and welded with the lower spherical stainless steel plate 7.

[0039] Preferably, the upper surface of the middle seat plate 5 is a convex spherical surface and inlaid with the upper spherical non-metallic sliding plate 2, and the lower surface of the middle seat plate 5 is a convex spherical surface and inlaid with the lower spherical non-metallic sliding plate 6.

[0040] Specifically, in the hyperbolic seismic mitigation support, the upper spherical stainless steel plate 3 and the upper spherical non-metallic sliding plate 2 will form an upper spherical friction pair; the lower spherical stainless steel plate 7 and the lower spherical non-metallic sliding plate 6 will form a lower spherical friction pair. Among them, the non-metallic sliding plate with large dry friction coefficient is used as the soft friction pair structure, which can improve the energy dissipation effect of the support.

[0041] Preferably, the vertical projection diameter of the upper spherical stainless steel plate 3 is greater than the vertical projection diameter of the upper spherical non-metallic sliding plate 2, and the vertical projection diameter of the lower spherical stainless steel plate 7 is greater than the vertical projection diameter of the lower spherical non-metallic sliding plate 6.

[0042] Preferably, the vertical projection of any one of the upper spherical stainless steel plate 3 and the lower spherical stainless steel plate 7 completely covers the space required for the upper spherical non-metallic sliding plate 2 or the lower spherical non-metallic sliding plate 6 to slide to the designed displacement and vertical rotation.

[0043] Specifically, in the energy dissipation bearing of the present application, the bearing upper seat plate 1, the upper spherical non-metallic sliding plate 2, the upper spherical stainless steel plate 3, the corrugated pipe 4, the middle seat plate 5, the lower spherical non-metallic sliding plate 6, the lower spherical stainless steel plate 7 and the lower seat plate 8 jointly realize the vertical bearing, horizontal sliding and vertical rotation functions of the bearing. Further referring to Figure 2 As shown in the middle seat plate 5, the inner diameter of the corrugated pipe 4 > the vertical projection diameter of the middle seat plate 5 to satisfy the middle seat plate 5 with sufficient horizontal sliding and vertical rotation space, and at the same time, the vertical projection diameter of the lower spherical stainless steel plate 7 > the vertical projection diameter of the lower spherical non-metallic sliding plate 6.

[0044] Although the present application is disclosed as above, the present application is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the present application, can make various changes and modifications, therefore the protection scope of the present application should be limited by the scope defined by the claims.

Claims

1. A tensile hyperboloid seismic isolation and energy dissipation bearing, characterized in that, It includes a hyperboloid seismic isolation bearing. In the hyperboloid seismic isolation bearing, a corrugated pipe (4) for vertical tensile resistance is added between the upper bearing plate (1) and the lower bearing plate (8). The corrugated pipe (4) has an axisymmetric structure and its upper end is fixedly sleeved on the upper bearing plate (1) and its lower end is fixedly sleeved on the lower bearing plate (8). Between the upper seat plate (1) and the lower seat plate (8), the hyperboloid vibration damping and isolation bearing also includes an upper spherical stainless steel plate (3), an upper spherical non-metallic sliding plate (2), a middle seat plate (5), a lower spherical non-metallic sliding plate (6), and a lower spherical stainless steel plate (7) arranged sequentially from top to bottom. The middle seat plate (5) is also an axisymmetric structure, and its axis of symmetry coincides with the axis of symmetry of the corrugated pipe (4). At the fixed sleeve of the bellows (4), the lower cylindrical diameter of the upper seat plate (1) is equal to the upper cylindrical diameter of the lower seat plate (8), and is also equal to the inner diameter of the bellows (4); the inner diameter of the bellows (4) is greater than the vertical projection diameter of the middle seat plate (5); the internal gap between the bellows (4) and the middle seat plate (5) is greater than the space required for the middle seat plate (5) to slide to the designed displacement and rotate vertically. The vibration damping and energy dissipation bearing is a horizontally isotropic structure.

2. The tensile hyperboloid seismic isolation and energy dissipation bearing according to claim 1, characterized in that, The lower surface of the upper seat plate (1) is a concave spherical surface and is welded with the upper spherical stainless steel plate (3), and the upper surface of the lower seat plate (8) is a concave spherical surface and is welded with the lower spherical stainless steel plate (7).

3. The tensile hyperboloid seismic isolation and energy dissipation bearing according to claim 1, characterized in that, The upper surface of the middle seat plate (5) is a convex spherical surface and is inlaid with the upper spherical non-metallic sliding plate (2), and the lower surface of the middle seat plate (5) is a convex spherical surface and is inlaid with the lower spherical non-metallic sliding plate (6).

4. The tensile hyperboloid seismic isolation and energy dissipation bearing according to claim 1, characterized in that, The vertical projection diameter of the upper spherical stainless steel plate (3) is greater than that of the upper spherical non-metallic sliding plate (2), and the vertical projection diameter of the lower spherical stainless steel plate (7) is greater than that of the lower spherical non-metallic sliding plate (6).

5. A tensile hyperboloid seismic isolation and energy dissipation bearing according to claim 4, characterized in that, The vertical projection of either the upper spherical stainless steel plate (3) or the lower spherical stainless steel plate (7) completely covers the space required for the upper spherical non-metallic sliding plate (2) or the lower spherical non-metallic sliding plate (6) to slide to the designed displacement and vertical rotation.

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