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A modular flexible bridge pier anti-collision device

An anti-collision device and modular technology, applied in road safety devices, bridges, bridge construction and other directions, can solve problems such as damage to the anti-collision device, and achieve the effect of enhancing energy absorption capacity, high energy absorption efficiency, and easy repair and replacement.

Active Publication Date: 2022-07-22
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem that the above existing anti-collision device is partially damaged but needs to be replaced as a whole, and proposes a modularized flexible pier anti-collision device

Method used

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  • A modular flexible bridge pier anti-collision device
  • A modular flexible bridge pier anti-collision device
  • A modular flexible bridge pier anti-collision device

Examples

Experimental program
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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments

[0029] Now for the protection of a square pier with a diameter of 1000mm, the outermost fiber wrapping is not used for reinforcement in this case.

[0030] Step 1: Clean the outer surface of the pier with a height of 1600mm, and bond the bottom steel plate to the outer surface of the pier with epoxy resin. Among them, the surface of the bottom steel plate is welded with bolts, the spacing of the bolts is 50mm, and the outermost bolts are also 50mm according to the edge of the bottom plate.

[0031] Step 2, firstly fabricate the column angle fiber-constrained scattered square column. The production process is to first wrap the fiber cloth on the outer wall of the cube shell used for shaping at the lower end and fix it with epoxy resin, then fill the inside with scattered particles, and finally glue another cube shell to the upper port....

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Abstract

The invention discloses a modular flexible bridge pier anti-collision device. The invention adopts modular design to achieve the goal of partial destruction and partial replacement of the anti-collision device; at the same time, the characteristics of the fiber-constrained bulk column can achieve both the support function and the goal of full-flexible protection. The invention adopts the fiber-constrained scattered square column as the corner column, which can not only fix the overall anti-collision device, but also realize the flexible protection for the corners of the square pier column, so as to realize the overall flexible protection. Compared with the traditional bridge pier protection device, the protection device has the advantages of convenient construction, easy repair and replacement, and high energy absorption efficiency. In addition, the fiber-constrained granular bulk material can be recycled concrete particles and waste brick slag particles to realize the reuse of construction waste and be more environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of bridge pier impact protection, in particular to a modular flexible bridge pier anti-collision device. Background technique [0002] With the rapid development of my country's economy and society, my country's urban bridge construction has entered a stage of rapid development. For the protection of bridge piers in urban areas, rigid protection measures such as outsourcing cement isolation piers and outsourcing steel boxes are mostly used. Since the speed of vehicles in urban areas is slow and mainly small and medium-sized vehicles, the impact force and impact energy generated by most collisions are small, and the rigidity of the bridge pier protective structure is too large. serious damage or even casualties. Therefore, in recent years, the method of outsourcing flexible sandwich porous anti-collision sacrificial structures for urban highway bridge piers has been adopted to absorb the energy generated by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/02E01F15/14
CPCE01D19/02E01F15/141E01F15/145E01F15/146
Inventor 周宏元于鸿鑫王小娟
Owner BEIJING UNIV OF TECH
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