阅读说明：本技术 一种桥墩防护装置 (Pier protector ) 是由 袁松 周杰彬 黎良仆 王希宝 宋松科 权新蕊 于 2020-12-21 设计创作，主要内容包括：本发明公开了一种桥墩防护装置,解决了桥墩防护装置结构复杂、不便维护的问题。本发明包括立柱和钢丝绳网,所述立柱数量至少为3根,所有立柱轴线平行,沿立柱的径向截面,所有立柱呈正多边形排布；所述钢丝绳网分别与两个相邻的立柱转动连接,钢丝绳网绕立柱轴线转动。本发明具有结构简单、易于施工、方便维护、成本较低等优点。(The invention discloses a pier protecting device, which solves the problems of complex structure and inconvenient maintenance of the pier protecting device. The steel wire rope net comprises at least 3 upright columns and steel wire rope nets, wherein the axes of all the upright columns are parallel, and all the upright columns are arranged in a regular polygon shape along the radial section of the upright columns; the steel wire rope net is respectively connected with two adjacent stand columns in a rotating mode, and rotates around the axis of the stand columns. The invention has the advantages of simple structure, easy construction, convenient maintenance, lower cost and the like.)

1. The pier protection device is characterized by comprising upright columns (2) and a steel wire rope net (1), wherein the number of the upright columns (2) is at least 3, the axes of all the upright columns (2) are parallel, and all the upright columns (2) are arranged in a regular polygon shape along the radial section of each upright column (2);

the steel wire rope net (1) is respectively rotatably connected with two adjacent upright posts (2), and the steel wire rope net (1) rotates around the axes of the upright posts (2).

2. A pier protector as claimed in claim 1, wherein the wire rope net (1) is provided with a pressure relief device.

3. The pier protecting device according to claim 2, wherein the pressure reducing device comprises a pressure reducing spring (5) and a flexible connecting piece (7), the pressure reducing device is connected with the steel wire rope net (1) through the pressure reducing spring (5), and the free end of the pressure reducing spring (5) is connected with the flexible connecting piece (7).

4. The pier protecting device according to claim 2, wherein the flexible connecting member (7) is arc-shaped and plate-shaped, the number of the pressure reducing springs (5) is 2, the pressure reducing springs (5) are respectively connected with two ends of the flexible connecting member (7), and the pressure reducing springs (5) are positioned on one side close to the concave surface of the flexible connecting member (7).

5. The pier protector according to claim 2, wherein the columns (2) are steel pipes.

6. The pier protecting device according to claim 4, which comprises a transverse rod (6), wherein the axis of the transverse rod (6) is arc-shaped, and the transverse rod (6) is hinged with the same end part of two adjacent columns (2).

7. The pier protecting device according to claim 1, wherein the columns (2) are sleeved with steel ball retainers, two side edges of the steel wire rope net (1) are respectively connected with a plurality of movable pipes (9), the axes of the movable pipes (9) are parallel to the two side edges, and the steel wire rope net (1) is respectively sleeved with two adjacent columns (2) through the movable pipes (9) on the two side edges to form rotary connection.

Technical Field

The invention relates to the technical field of roads and bridges, in particular to a pier protection device.

Background

The intermediate support structure of a multi-span bridge is called a pier. The pier is divided into solid pier, column pier, bent pier and the like. Can be divided into rectangular piers, pointed piers, circular piers and the like according to the plane shape. The material for building the pier can be wood, stone, concrete, reinforced concrete, steel and the like.

The pier mainly comprises a top cap and a pier body. The abutment mainly comprises a top cap and an abutment body. The top cap is used for dispersing and uniformly transmitting the large and concentrated force transmitted from the bridge span support to the pier body and the platform body. Therefore, the top cap is constructed by adopting materials with higher strength, generally reinforced concrete with the thickness not less than 40 cm and not less than 200 grades. In addition, the top cap also needs to have larger plane size, so that a necessary working surface is provided for construction beam erecting and maintenance. The pier body and the platform body are main structures for supporting the bridge span, not only bear all loads transmitted by the bridge span structure, but also directly bear various loads such as soil pressure, water flow impact force, ice pressure, ship impact force and the like, so that the pier body and the platform body have enough strength, rigidity and stability.

After the bridge pier is built, the collision test is carried out on the bridge pier, and only the bridge pier meeting the strength requirement can be used. However, as time goes on, the bridge pier is exposed in the air all the time, the weathering problem of the bridge pier cannot be avoided, the strength is reduced, the bridge pier on the land occasionally faces stone impact caused by mountain collapse, although the collision accident happens rarely, the bridge pier is partially damaged, and great potential safety hazards are brought.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the invention provides a pier protection device which is simple in structure and convenient to maintain and construct, and solves the problems.

The invention is realized by the following technical scheme:

a pier protection device comprises at least 3 upright posts and a steel wire rope net, wherein the axes of all the upright posts are parallel, and all the upright posts are arranged in a regular polygon shape along the radial section of the upright posts; the steel wire rope net is respectively connected with two adjacent stand columns in a rotating mode, and rotates around the axis of the stand columns.

In the prior art, a lot of measures are taken for protecting the bridge pier, wherein the bridge pier protecting device is not lacked, but the existing bridge pier protecting device is connected with the bridge pier body by virtue of the rigid part, so that the installation process of the bridge pier protecting device is certain 'damage' to the bridge pier, and the 'damage' is particularly marked when the bridge pier protecting device is maintained, namely when the maintenance device is replaced, the installation position is required to be searched on the bridge pier again.

According to the invention, the pier protection device is not directly connected with the pier, but the upright columns around the pier are buried underground to be used as the support and fixing part of the pier protection device, and the steel wire rope net between the upright columns mainly plays a role in intercepting falling rocks; when the falling rock impact is resisted, firstly, the falling rock is contacted and intercepted through the steel wire rope net, and if the falling rock impact is smaller, the impact is counteracted directly by the elastic deformation of the steel wire rope net, so that the purpose of partner protection is achieved; if the falling rock impact is large, the elastic deformation of the steel wire rope net is used as primary buffering to offset part of impact force, when the steel wire rope net reaches the elastic limit, the steel wire rope net is used as an intermediate transmission body to transmit the impact force of the falling rock to the stand column, so that the stand column is elastically deformed, the elastic deformation of the stand column is used as secondary buffering to offset the impact force of the falling rock again, and therefore the falling rock is blocked outside the steel wire rope net, the bridge pier is protected, and the falling rock is prevented from directly or indirectly contacting the bridge pier; the steel wire rope net and the upright post are rotatably connected, under the general condition that protection is needed, the steel wire rope net and other components are fixedly connected to increase the connection strength of the steel wire rope net and the upright post, and for the use environment of the invention: at the moment when the falling rocks contact the steel wire rope net, because the falling rocks impact is too large, the deformation of the steel wire rope net is almost completed instantly, the conventional connecting part for fixing the falling rocks bears instant bending moment for the steel wire rope net, and bears instant torque for the upright post, both the moments are very large, the steel wire rope net is easy to break and/or the upright post is easy to deform seriously, the main stress point on the upright post is changed along with the state of the steel wire rope net by the rotary connection in the invention, the steel wire rope net is prevented from breaking and/or the upright post is prevented from deforming unnecessarily, the service life of the device is ensured, the resistance of the device to the falling rocks is also improved, in addition, from the construction angle, the invention has simple structure and easy assembly, the upright post or the steel wire rope net can be directly transported to the site for assembly after being prefabricated, the construction period is short, compared with the prior art, the bridge pier is greatly reduced in cost in material and manual work, and the bridge pier is more convenient to maintain in the later period without being installed on the bridge pier.

Preferably, a pressure reducing device is arranged on the steel wire rope net; the pressure reducing device is used for assisting in providing buffer force before the stand column reaches the elastic limit, so that the probability that the stand column reaches the elastic limit is reduced, the service life of the stand column is guaranteed, and the protective performance of the pier protective device is guaranteed.

Preferably, the pressure reducing device comprises a pressure reducing spring and a flexible connecting piece, the pressure reducing device is connected with the steel wire rope net through the pressure reducing spring, and the free end of the pressure reducing spring is connected with the flexible connecting piece; the flexible connecting piece is used for contacting with the bridge pier, transfers partial buffer force generated by the pressure reducing spring to the bridge pier, and in the transfer process, the flexible connecting piece deforms to offset partial buffer force, so that the load of the bridge pier is reduced.

Furthermore, the flexible connecting piece is arc-shaped plate-shaped, the number of the pressure reducing springs is 2, the pressure reducing springs are respectively connected with two ends of the flexible connecting piece, and the pressure reducing springs are positioned on one side close to the concave surface of the flexible connecting piece; the arc-shaped flexible connecting piece is matched with the pier, and is characterized in that: after two relief spring and flexible connectors both ends are connected, when receiving pressure, relief spring is to flexible connectors both ends application of force for flexible connectors carries out certain "expansion" to both ends respectively, increases flexible connectors's deformation volume, thereby offsets more energy, reduces the load of pier.

Preferably, the upright post is a steel pipe.

Preferably, the device comprises a transverse rod, the axis of the transverse rod is arc-shaped, and the transverse rod is hinged with the same end parts of two adjacent upright columns respectively; the setting of transverse bar strengthens pier protector's stability, when resisting the rockfall striking, because the curved setting of transverse bar, adjacent stand both ends carry out "extrusion" to the transverse bar, make the transverse bar axis further crooked, adjacent stand tip can take place to remove in opposite directions, reduce the load of wire rope net and stand end connection department, guarantee the life of device, the articulated setting of transverse bar and stand is then when directly striking the stand at the rockfall, prevent that the stand from receiving the rigidity impact and taking place serious deformation.

Preferably, the steel ball retainer is sleeved outside the upright posts, two side edges of the steel wire rope net are respectively connected with a plurality of movable pipes, the axes of the movable pipes are parallel to the two side edges, and the steel wire rope net is respectively sleeved with two adjacent upright posts through the movable pipes on the two side edges to form rotary connection; the steel ball holder cooperates the setting of movable tube for the junction is equivalent to the bearing and is connected, reduces the movable tube and rotates the degree of wear of in-process, and when setting up a plurality of movable tubes, the homoenergetic of wire rope net homoenergetic when receiving the impact of each height takes place to rotate for the stand in time.

The invention has the following advantages and beneficial effects:

the invention has simple structure, only the steel wire rope net is connected with the upright post in a rotating way, and the installation of the upright post is buried in the ground around the pier, so the construction is convenient, the material cost and the labor cost are greatly reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic side view of the present invention.

Fig. 2 is a schematic structural diagram of one side surface of embodiment 2 of the present invention.

Fig. 3 is a schematic top view of embodiment 2 of the present invention.

Reference numbers and corresponding part names in the drawings:

1-steel wire rope net, 2-upright post, 3-ground, 4-sleeve, 5-decompression spring, 6-transverse rod, 7-flexible connecting piece, 8-pier and 9-movable tube.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1

A pier protection device comprises upright posts 2 and a steel wire rope net 1, wherein the number of the upright posts 2 is at least 3, the axes of all the upright posts 2 are parallel, and all the upright posts 2 are arranged in a regular polygon shape along the radial section of the upright posts 2; the steel wire rope net 1 is respectively connected with two adjacent stand columns 2 in a rotating mode, and the steel wire rope net 1 rotates around the axes of the stand columns 2.

In this embodiment, the stand 2 is installed on 8 ground 3 all around the pier, stand 2 is located the region that 8 protector of pier enclose promptly, when suffering the rockfall and assaulting, mainly lean on the elastic deformation of wire rope net 1 and stand 2 to offset the impact force of rockfall, and wire rope net 1 is connected the fracture that then has protected wire rope net 1 owing to bear great instantaneous load and take place with the rotation of stand 2, also reduce the moment of torsion that stand 2 received simultaneously, prevent that stand 2 from taking place unnecessary deformation.

Example 2

The embodiment is an improvement on the basis of embodiment 1, the number of the upright columns 2 is 6, on the radial section of each upright column 2, the 6 upright columns 2 are respectively positioned on 6 angular points of a regular hexagon, the same end of the adjacent upright column 2 is hinged with an arc-shaped transverse rod 6, the transverse rod 6 can rotate around the axis of the upright column 2, and the concave surface of the transverse rod 6 is one surface close to the steel wire rope net 1; still cup jointed the steel ball holder on stand 2, steel ball holder cup joints a plurality of movable pipes 9 outward, alternate movable pipe 9 is connected with same wire rope net 1, still be connected with relief spring 5 on wire rope net 1, the plane that relief spring 5 axis and wire rope net 1 formed is perpendicular, the free end of per two relief spring 5 is connected with flexonics spare 7, flexonics spare 7 is arc platelike, flexonics spare 7 is connected with two relief spring 5 respectively through both ends, the axis that flexonics spare 7 corresponds is parallel with stand 2 axis.

When falling rocks impact on a steel wire rope net 1 of a pier 8 protection device, the buffer function can be divided into three stages, firstly, primary buffer is realized through elastic deformation of the steel wire rope net 1, meanwhile, a pressure reducing spring 5 contracts to play an auxiliary role, then, when the steel wire rope net 1 reaches the elastic limit, secondary buffer is realized through contraction of the pressure reducing spring 5, at the moment, deformation of an upright post 2 plays an auxiliary buffer role, and finally, the deformation of the upright post 2 is used as tertiary buffer, and contraction of the pressure reducing spring 5 plays an auxiliary role; in the process of the contraction of the pressure reducing spring 5, the pressure reducing spring 5 has certain acting force on the pier 8 at the same time, the flexible connecting piece 7 transversely expands under the direct action of the pressure reducing spring 5, the transverse direction of the position is the direction perpendicular to the axis of the pier 8 and parallel to the surface of the steel wire rope net 1, and the energy is offset through the deformation of the flexible connecting piece 7, so that the pier 8 is protected.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.