CN218989874U

CN218989874U - Elastic limit sliding support

Info

Publication number: CN218989874U
Application number: CN202223355056.8U
Authority: CN
Inventors: 白自恒; 李高升; 李永鼎
Original assignee: Wuhan Qiaozhiheng Bridge Engineering Technology Co ltd
Current assignee: Wuhan Qiaozhiheng Bridge Engineering Technology Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-05-09
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses an elastic limit sliding support, which comprises an upper support plate assembly, a spherical cap assembly, a middle support plate assembly and a lower support plate assembly, wherein the upper support plate assembly is connected with the spherical cap assembly; the spherical crown assembly is arranged between the upper support assembly and the middle support assembly, the middle support assembly is arranged on the lower support assembly, the upper support plate assembly is arranged on a bridge, and the lower support plate assembly is arranged on a bridge pier; simple structure, construction convenience, through the mode of tooth's socket meshing on the guide rail of support, realize the spacing function of elasticity of support, can effectively avoid the bridge to suffer destruction because of bearing too big horizontal force, reduce the structural damage of bridge under the major shock effect, but wide application in all kinds of earthquake resistant structure fields.

Description

Elastic limit sliding support

Technical Field

The utility model relates to the technical field of bridge engineering, in particular to an elastic limit sliding support.

Background

The support is a connecting device between the bridge body and the bridge pier, and simultaneously, the reaction force and deformation (displacement and rotation angle) of the upper structure of the bridge are reliably transmitted to the lower structure of the bridge through the support.

Most of the existing bridge steel supports do not have a limiting function, and when the upper and lower positions of a bridge exceed the maximum designed displacement, the bridge body is dislocated, and even a beam falling accident occurs.

The limit stop is added on the part of the support in the sliding direction to increase the limit function, but the mode has single action condition, and can only act after the support exceeds the design displacement and contacts with the limit stop, so that the bridge is cut off instantly even when the seismic force of the bridge is seriously overloaded, and the bridge does not act at all.

In view of the foregoing, it is desirable to provide a novel elastic limit sliding support to overcome the above-mentioned drawbacks.

Disclosure of Invention

The utility model aims to provide an elastic limit sliding support, which can effectively prevent a bridge from being damaged due to the fact that the bridge bears excessive horizontal force and reduce structural damage of the bridge under the action of large earthquake.

In order to achieve the above purpose, the utility model provides an elastic limit sliding support, which comprises an upper support plate assembly, a spherical cap assembly, a middle support plate assembly and a lower support plate assembly; the spherical crown assembly is arranged between the upper support assembly and the middle support assembly, the middle support assembly is arranged on the lower support assembly, the upper support plate assembly is arranged on a bridge, and the lower support plate assembly is arranged on a bridge pier.

In a preferred embodiment, the upper seat plate assembly comprises an upper seat plate and an upper wear plate, the upper wear plate being embedded in a recess in the bottom of the upper seat plate.

In a preferred embodiment, the spherical crown assembly comprises a spherical crown liner plate, a first stainless steel plate and a first wear-resistant plate, wherein a first groove is formed in the bottom of the spherical crown liner plate, the first stainless steel plate is fixed to the top surface of the spherical crown liner plate and forms a sliding friction pair with the upper wear-resistant plate, and the first wear-resistant plate is embedded in the first groove of the spherical crown liner plate.

In a preferred embodiment, the middle support plate assembly comprises a middle support plate, a second stainless steel plate, a second planar wear-resisting plate, an elastic piece and a limiting block, wherein a second groove is formed in the bottom of the middle support plate, the second stainless steel plate is fixed on the top surface of the middle support plate and forms a sliding friction pair with the first wear-resisting plate, the second wear-resisting plate is embedded in the second groove of the middle support plate, an elastic piece groove is further formed in the middle support plate, and the elastic piece is installed in the elastic piece groove and connected with the limiting block.

In a preferred embodiment, the lower support plate assembly comprises a lower support plate and a third stainless steel plate, wherein the third stainless steel plate is fixed on the top surface of the lower support plate and forms a sliding friction pair with the second wear plate.

In a preferred embodiment, the outer side surface of the limiting block is provided with tooth grooves, two sides of the lower support plate are also provided with guide rails, the inner side surface of each guide rail is provided with tooth grooves corresponding to the outer side surface of the limiting block, and the tooth grooves of the guide rails are meshed with the tooth grooves of the limiting block.

Compared with the prior art, the beneficial effects are that: simple structure, construction convenience, through the mode of tooth's socket meshing on the guide rail of support, realize the spacing function of elasticity of support, can effectively avoid the bridge to suffer destruction because of bearing too big horizontal force, reduce the structural damage of bridge under the major shock effect, but wide application in all kinds of earthquake resistant structure fields.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of an elastic limit sliding support provided by the utility model.

Fig. 2 is a side cross-sectional view of the resilient restraining slide mount shown in fig. 1.

Fig. 3 is a top view of the elastic limit sliding support shown in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantageous technical effects of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is intended to illustrate the utility model, and not to limit the utility model.

It is to be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. It will be apparent to those skilled in the art that the terms described above have the particular meaning in the present utility model, as the case may be.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Furthermore, the meaning of "a plurality of", "a number" means two or more, unless specifically defined otherwise.

Referring to fig. 1 to 3, the present utility model provides an elastic limit sliding support, which includes an upper support plate assembly 1, a spherical cap assembly 2, a middle support plate assembly 3 and a lower support plate assembly 4; the spherical crown assembly 2 is arranged between the upper support assembly 1 and the middle support assembly 3, the middle support assembly 3 is arranged on the lower support assembly 4, the upper support plate assembly 1 is arranged on an upper structure (such as a bridge), and the lower support plate assembly 4 is arranged on a lower structure (such as a bridge pier).

The upper support plate assembly 1 comprises an upper support plate 11 and an upper wear plate 12, and the upper wear plate 12 is embedded in an arc-shaped groove at the bottom of the upper support plate 11.

The spherical crown assembly 2 comprises a spherical crown lining plate 21, an arc-shaped stainless steel plate I22 and a planar wear-resistant plate I23, a first groove is formed in the bottom of the spherical crown lining plate 21, the stainless steel plate I22 is fixed to the top surface of the spherical crown lining plate 21 and forms a sliding friction pair with the upper wear-resistant plate 12, and the wear-resistant plate I23 is embedded in the first groove of the spherical crown lining plate 21.

The middle support plate assembly 3 comprises a middle support plate 31, a second planar stainless steel plate 32, a second planar wear plate 33, an elastic piece (spring) 34 and a limiting block 35; the bottom of well bedplate 31 has seted up the second recess, corrosion resistant plate two 32 fix in the top surface of well bedplate 31 and with wear-resisting plate one 23 constitutes sliding friction pair, wear-resisting plate two 33 inlay and establish in the second recess of well bedplate 31, still be provided with elastic component groove 311 on the well bedplate 31, elastic component 34 install in elastic component groove 311 and be connected with stopper 35. Specifically, the outer side surface of the limiting block 35 is provided with a tooth slot.

The lower support plate assembly 4 comprises a lower support plate 41 and a planar stainless steel plate III 42, wherein the stainless steel plate III 42 is fixed on the top surface of the lower support plate 41 and forms a sliding friction pair with the planar wear-resisting plate II 33.

The two sides of the lower support plate 41 are also provided with guide rails 411, tooth grooves corresponding to the outer side surfaces of the limiting blocks 35 are formed on the inner side surfaces of the guide rails 411, and the tooth grooves of the guide rails 411 are meshed with the tooth grooves of the limiting blocks 35.

Under the normal working condition of the bridge, the elastic limiting sliding support is limited due to the fact that the limiting block 35 is meshed with the tooth grooves of the sliding guide rail 411, and cannot horizontally slide to generate displacement, and at the moment, the elastic limiting sliding support is equivalent to the fixed support.

When an earthquake happens, the elastic limiting sliding support receives excessive horizontal force, as the tooth grooves of the limiting block 35 and the sliding guide rail 411 are meshed with each other by an inclined angle, the elastic piece 34 is compressed by a component force, at the moment, the limiting block 35 and the guide rail 411 can slide relatively along the meshing inclined plane, and if the stress does not exceed the designed force, the tooth grooves of the limiting block 35 and the guide rail 411 can slide back to the initial state, and are meshed again and reset automatically; if the stress does not exceed the design force, the tooth grooves of the two tooth grooves are gradually separated along the inclined plane, after the tooth grooves are separated, the upper part and the lower part of the support can slide along the tooth tops for a certain distance, and after the tooth grooves enter the next tooth groove, the elastic piece 34 is compressed and released, and the tooth grooves are meshed again, so that the tooth grooves are circularly reciprocated, and the limit for a plurality of times can be realized.

In summary, the elastic limit sliding support provided by the utility model realizes the elastic limit function of the support by adopting tooth surface engagement on the contact surface of the sliding guide rail of the support, can better and effectively protect the bridge structure, and can be widely applied to the field of various anti-seismic structures.

The present utility model is not limited to the details and embodiments described herein, and thus additional advantages and modifications may readily be made by those skilled in the art, without departing from the spirit and scope of the general concepts defined in the claims and the equivalents thereof, and the utility model is not limited to the specific details, representative apparatus and examples shown and described herein.

Claims

1. The elastic limit sliding support is characterized by comprising an upper support plate assembly (1), a spherical cap assembly (2), a middle support plate assembly (3) and a lower support plate assembly (4); the ball crown assembly (2) is arranged between the upper support plate assembly (1) and the middle support plate assembly (3), the middle support plate assembly (3) is arranged on the lower support plate assembly (4), the upper support plate assembly (1) is arranged on a bridge, and the lower support plate assembly (4) is arranged on a bridge pier.

2. The elastic limit sliding support according to claim 1, wherein the upper support plate assembly (1) comprises an upper support plate (11) and an upper wear plate (12), and the upper wear plate (12) is embedded in a groove at the bottom of the upper support plate (11).

3. The elastic limit sliding support according to claim 2, wherein the spherical cap assembly (2) comprises a spherical cap lining plate (21), a first stainless steel plate (22) and a first wear-resistant plate (23), a first groove is formed in the bottom of the spherical cap lining plate (21), the first stainless steel plate (22) is fixed to the top surface of the spherical cap lining plate (21) and forms a sliding friction pair with the upper wear-resistant plate (12), and the first wear-resistant plate (23) is embedded in the first groove of the spherical cap lining plate (21).

4. A spacing sliding support according to claim 3, wherein the middle support plate assembly (3) comprises a middle support plate (31), a second stainless steel plate (32), a second planar wear-resisting plate (33), an elastic piece (34) and a limiting block (35), a second groove is formed in the bottom of the middle support plate (31), the second stainless steel plate (32) is fixed on the top surface of the middle support plate (31) and forms a sliding friction pair with the first wear-resisting plate (23), the second wear-resisting plate (33) is embedded in the second groove of the middle support plate (31), an elastic piece groove (311) is further formed in the middle support plate (31), and the elastic piece (34) is arranged in the elastic piece groove (311) and is connected with the limiting block (35).

5. The elastic limit sliding support as claimed in claim 4, wherein the lower support plate assembly (4) comprises a lower support plate (41) and a third stainless steel plate (42), and the third stainless steel plate (42) is fixed on the top surface of the lower support plate (41) and forms a sliding friction pair with the second wear plate (33).

6. The elastic limit sliding support according to claim 5, wherein tooth grooves are formed in the outer side face of the limit block (35), guide rails (411) are further arranged on two sides of the lower support plate (41), tooth grooves corresponding to the outer side face of the limit block (35) are formed in the inner side face of the guide rails (411), and the tooth grooves of the guide rails (411) are meshed with the tooth grooves of the limit block (35).