Steel structure bridge damping support

Abstract

The utility model relates to the technical field of bridge support structures, in particular to a steel structure bridge damping support which comprises an upper support plate and a lower support plate, and a lining plate is arranged below the upper support plate. A first curved surface supporting part is arranged on the top surface, facing the upper support plate, of the lining plate, and a second curved surface supporting part in sliding fit with the first curved surface supporting part is arranged at the bottom of the upper support plate; buffer columns are arranged at the bottom of the lining plate, and a first groove and a second groove are formed in the lower support plate. A first end face gap is formed between the buffer column and the bottom of the second groove, a second end face gap is formed between the lining plate and the bottom of the first groove, and damping layers are arranged in the first end face gap and the second end face gap. The damping layer is formed by overlapping and combining a plurality of disc springs, and an annular damping supporting piece is arranged in a gap between the upper support plate and the lower support plate. Through the arrangement of the shock absorption layer formed by overlapping the multiple disc springs and the annular damping supporting piece, the support has the vertical and transverse self-resetting capacity, and the anti-seismic property and safety of a bridge are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge support structures, in particular to a shock-absorbing support for a steel structure bridge. Background Art

[0002] The bearing is an important structural component connecting the superstructure and substructure of the bridge. It can reliably transmit the reaction force and deformation (displacement and rotation) of the superstructure of the bridge to the substructure of the bridge, so that the actual stress condition of the structure is consistent with the calculated theoretical diagram. In order to reduce the vibration caused by the bridge, it is usually necessary to install a shock-absorbing bracket on the bridge support. However, the existing shock-absorbing bracket has poor shock-absorbing effect and does not have vertical and lateral self-reset capability. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a shock-absorbing support for a steel structure bridge, which effectively solves the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a shock-absorbing bearing of a steel structure bridge, comprising: an upper bearing plate and a lower bearing plate, a lining plate is provided below the upper bearing plate;

[0005] The top surface of the lining plate facing the upper support plate is provided with a first curved support portion, and the bottom of the upper support plate is provided with a second curved support portion that slidably cooperates with the first curved support portion; the bottom of the lining plate is provided with a buffer column, and the lower support plate is provided with a first groove for the lining plate to be embedded in and a second groove for the buffer column to be embedded in;

[0006] A first end face gap is provided between the buffer column and the bottom of the second groove, a second end face gap is provided between the lining plate and the bottom of the first groove, and a shock-absorbing layer is provided in the first end face gap and the second end face gap; the shock-absorbing layer is formed by stacking a plurality of disc springs, and an annular damping support is provided in the gap between the upper support plate and the lower support plate.

[0007] Furthermore, a spherical sliding plate is provided on the contact curved surface between the first curved surface supporting portion and the second curved surface supporting portion.

[0008] Furthermore, a rubber plate is provided at the bottom of each of the first groove and the second groove.

[0009] Furthermore, the upper support plate is located at a central position and extends downward to form a second curved support portion; the projection range of the outer contour edge of the second curved support portion is larger than the projection range of the outer contour edge of the first curved support portion.

[0010] Furthermore, the upper support plate is provided with a dustproof enclosure plate at the outer edge of the annular damping support member.

[0011] Furthermore, the annular damping support member includes a first plane, a second plane and a semicircular arc surface connected between the first plane and the second plane; the first plane is fixed to the upper surface of the lower support plate, and the second plane abuts against the lower surface of the upper support plate.

[0012] Furthermore, a fixing portion extends from an end portion of the first plane toward the lower support plate, and the fixing portion is fixed to an outer side surface of the lower support plate by bolts.

[0013] Furthermore, a protective sleeve is provided at a position of the lower support plate corresponding to the fixing portion, and the protective sleeve and the lower support plate form an annular gap for the fixing portion to be embedded.

[0014] Furthermore, the annular damping support is made of Q235 or Q345 material.

[0015] Furthermore, high damping rubber rings are provided on the side walls of the first groove and the second groove.

[0016] The beneficial effects of the utility model are as follows: the utility model effectively reduces the maximum inter-layer displacement angle and the residual inter-layer displacement angle of the structure through the arrangement of two-stage shock-absorbing layers, thereby improving the seismic resistance of the structure; and through the arrangement of a plurality of disc spring stacked shock-absorbing layers and annular damping support members, good elasticity and restoring force are provided, so that the bearing can automatically return to its original state after being subjected to force, and has vertical and lateral self-resetting capabilities, thereby improving the seismic resistance and safety of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is an exploded schematic diagram of a shock-absorbing support for a steel structure bridge in an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of a shock-absorbing support for a steel structure bridge in an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the lower support plate in the embodiment of the utility model;

[0021] Figure 4 It is a schematic structural diagram of the annular damping support member in an embodiment of the utility model.

[0022] Figure numerals: 1. upper support plate; 11. second curved surface support portion; 2. lower support plate; 21. first groove; 22. second groove; 3. lining plate; 31. first curved surface support portion; 4. buffer column; 5. shock absorbing layer; 6. annular damping support member; 61. first plane; 62. second plane; 63. semicircular arc surface; 64. fixing portion; 7. rubber plate; 8. dustproof enclosure; 9. protective cover; 10. high damping rubber ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] like Figures 1 to 4 The shock-absorbing bearing of the steel structure bridge shown in the figure comprises: an upper bearing plate 1 and a lower bearing plate 2, a lining plate 3 is provided below the upper bearing plate 1; a first curved support portion 31 is provided on the top surface of the lining plate 3 facing the upper bearing plate 1, and a second curved support portion 11 slidingly matched with the first curved support portion 31 is provided at the bottom of the upper bearing plate 1; a buffer column 4 is provided at the bottom of the lining plate 3, and a first groove 21 for the lining plate 3 to be embedded and a second groove 22 for the buffer column 4 to be embedded are provided on the lower bearing plate 2; a first end face gap is provided between the buffer column 4 and the bottom of the second groove 22, a second end face gap is provided between the lining plate 3 and the bottom of the first groove 21, and a shock-absorbing layer 5 is provided in both the first end face gap and the second end face gap; the shock-absorbing layer 5 is composed of a plurality of disc springs stacked and combined; and an annular damping support member 6 is provided in the gap between the upper bearing plate 1 and the lower bearing plate 2.

[0027] The utility model effectively reduces the maximum inter-layer displacement angle and residual inter-layer displacement angle of the structure and improves the seismic performance of the structure by setting up two-stage shock-absorbing layers 5. The shock-absorbing layer 5 is composed of a plurality of disc springs stacked together, which provides good elasticity and restoring force and has vertical and lateral self-resetting capabilities, so that the bearing can automatically return to its original state after being subjected to force, thereby improving the seismic performance and safety of the bridge.

[0028] In the present invention, a spherical slide is provided on the contact surface between the first curved support portion 31 and the second curved support portion 11. The provision of the spherical slide can provide a larger rotation range and flexibility, so that the bridge superstructure can more easily adapt to various corner requirements. The spherical slide is usually made of a material with a low friction coefficient, such as polytetrafluoroethylene (PTFE), which helps to reduce the friction resistance of the bearing and extend the service life of the bearing.

[0029] In the preferred embodiment, the bottom of the first groove 21 and the second groove 22 are both provided with a rubber plate 7. The rubber plate 7 can provide additional buffering effect to reduce the damage to the structure caused by the impact load. In addition, the rubber plate 7 can quickly return to its original state after being compressed, which helps the disc spring to quickly return to its initial state after being stressed and realize self-reset.

[0030] As a preferred mode of this solution, the upper support plate 1 is located at the center and extends downward to form a second curved support portion 11; the projection range of the outer contour edge of the second curved support portion 11 is larger than the projection range of the outer contour edge of the first curved support portion 31. The sliding curved surface of the second curved support portion 11 is larger than the sliding curved surface of the second curved support portion 11, which provides a larger rotation radius for the upper support plate 1, reduces the friction coefficient during rotation, and enables the upper support plate 1 to be more flexibly tilted and rotated at any angle.

[0031] The upper support plate 1 is provided with a dustproof enclosure 8 at the outer edge of the annular damping support 6. The dustproof enclosure 8 can prevent dust and other tiny particles from invading the interior of the support, prevent these particles from contaminating the sliding surface of the support, ensure the sliding performance and normal operation of the support, extend the service life of the support, and reduce maintenance costs.

[0032] The annular damping support member 6 in the utility model is made of Q235 or Q345 material. Q235 or Q345 material has strong post-yield hysteresis deformation ability and good stability. Preferably, the annular damping support member 6 includes a first plane 61, a second plane 62 and a semicircular arc surface 63 connected between the first plane 61 and the second plane 62; the first plane 61 is fixed on the upper surface of the lower support plate 2, and the second plane 62 is abutted against the lower surface of the upper support plate 1.

[0033] The annular damping support 6 can drive the relatively sliding upper support plate 1 and lining plate 3 to move toward the central equilibrium position of the lower support plate 2 to achieve automatic reset; it can also control the relative displacement between the upper support plate 1 and the lining plate 3 within a certain range to prevent beam falling accidents caused by excessive displacement.

[0034] As a preferred embodiment of the above embodiment, a fixing portion 64 is extended from the end of the first plane 61 toward the lower support plate 2, and the fixing portion 64 is fixed to the outer side surface of the lower support plate 2 by bolts, which can distribute the force more evenly, reduce potential damage caused by local stress concentration, and enhance the performance of the overall structure.

[0035] In another preferred embodiment, a protective sleeve 9 is provided at a position of the lower support plate 2 corresponding to the fixing portion 64 , and the protective sleeve 9 and the lower support plate 2 form an annular gap for the fixing portion 64 to be embedded.

[0036] The protective cover 9 can protect the fixing portion 64 from external environmental factors such as corrosion and wear, thereby extending its service life. In some cases, the protective cover 9 can provide additional shock absorption and buffering effects to absorb energy generated by external impact or vibration.

[0037] In the preferred embodiment of the utility model, high damping rubber rings 10 are provided on the side walls of the first groove 21 and the second groove 22. The application of the high damping rubber rings 10 can significantly improve the shock absorption performance of the bridge bearing, extend the service life, and adapt to the changing use environment.

[0038] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shock-absorbing bearing for a steel structure bridge, comprising an upper bearing plate (1) and a lower bearing plate (2), characterized in that: A lining plate (3) is provided below the upper support plate (1); The lining plate (3) is provided with a first curved support portion (31) on the top surface facing the upper support plate (1), and the bottom of the upper support plate (1) is provided with a second curved support portion (11) slidably matched with the first curved support portion (31); the bottom of the lining plate (3) is provided with a buffer column (4), and the lower support plate (2) is provided with a first groove (21) for the lining plate (3) to be embedded and a second groove (22) for the buffer column (4) to be embedded; A first end face gap is provided between the buffer column (4) and the bottom of the second groove (22), a second end face gap is provided between the lining plate (3) and the bottom of the first groove (21), and a shock absorbing layer (5) is provided in both the first end face gap and the second end face gap; the shock absorbing layer (5) is formed by stacking a plurality of disc springs, and an annular damping support member (6) is provided in the gap between the upper support plate (1) and the lower support plate (2).

2. The shock-absorbing bearing for a steel structure bridge according to claim 1, characterized in that: A spherical sliding plate is provided on the contact curved surface between the first curved surface support portion (31) and the second curved surface support portion (11).

3. The shock-absorbing bearing for a steel structure bridge according to claim 1, characterized in that: The bottoms of the first groove (21) and the second groove (22) are both provided with rubber plates (7).

4. The shock-absorbing bearing for a steel structure bridge according to claim 1, characterized in that: The upper support plate (1) is located at a central position and extends downward to form a second curved support portion (11); the projection range of the outer contour edge of the second curved support portion (11) is greater than the projection range of the outer contour edge of the first curved support portion (31).

5. The shock-absorbing bearing for a steel structure bridge according to claim 1, characterized in that: The upper support plate (1) is provided with a dustproof enclosure plate (8) at the outer edge of the annular damping support member (6).

6. The shock-absorbing bearing for a steel structure bridge according to claim 1, characterized in that: The annular damping support member (6) comprises a first plane (61), a second plane (62) and a semicircular arc surface (63) connected between the first plane (61) and the second plane (62); the first plane (61) is fixed on the upper surface of the lower support plate (2), and the second plane (62) abuts against the lower surface of the upper support plate (1).

7. The shock-absorbing bearing for a steel structure bridge according to claim 6, characterized in that: A fixing portion (64) extends from the end of the first plane (61) toward the lower support plate (2), and the fixing portion (64) is fixed to the outer side surface of the lower support plate (2) by means of bolts.

8. The shock-absorbing bearing for a steel structure bridge according to claim 7, characterized in that: The lower support plate (2) is provided with a protective sleeve (9) at a position corresponding to the fixing portion (64), and the protective sleeve (9) and the lower support plate (2) form an annular gap for the fixing portion (64) to be embedded.

9. The shock-absorbing bearing for a steel structure bridge according to claim 1, characterized in that: The annular damping support member (6) is made of Q235 or Q345 material.

10. The shock-absorbing bearing for a steel structure bridge according to claim 1, characterized in that: High damping rubber rings (10) are provided on the side walls of the first groove (21) and the second groove (22).

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