Abstract
In recent years, out-of-control motor vehicles often climb the sidewalk steps, break the fence, and fall off the bridge, which has brought a series of heavy losses to people’s lives and property safety. Therefore, it is urgent to take feasible measures to improve the protective performance of bridge collision guardrails, so as to effectively control the risk of such accidents and reduce their consequences. On the basis of summarizing the application characteristics and shortcomings of existing anti-collision measures for bridges, this paper proposed a new type of prefabricated anti-collision guardrail for bridges to achieve separation of pedestrians and vehicles. The guardrail is mainly composed of the main body and the anchor seat. The vertical resistance steel plate and the horizontal resistance steel plate were respectively set up before the anchor seat and the bottom plate and connected with bolts. According to the characteristics and force of the guardrails, the concept analysis of the force transmission path was carried out first. Then, the standard collision load was selected according to the relevant design specifications, and the refined finite element method was used to compare the new type of guardrail with the traditional guardrail, and the detailed mechanical behavior of the whole and each component was considered comprehensively. On this basis, according to the standard collision load, the failure load and failure mode of the above two types of guardrails in the limit state were further analyzed. The results show that the new guardrail proposed in this paper meets the requirements of the code, and compared with the traditional guardrail, its anti-collision performance is obviously improved.
Publication Date
6-18-2022
DOI
10.14048/j.issn.1671-2579.2022.03.046
First Page
254
Last Page
258
Submission Date
May 2025
Recommended Citation
Jingyu, Zhou; Junyi, Tang; and Jingyun, Huang
(2022)
"Research on a New Type of Prefabricated Bridge Human-Vehicle Isolation Anti-Collision Guardrail,"
Journal of China & Foreign Highway: Vol. 42:
Iss.
3, Article 46.
DOI: 10.14048/j.issn.1671-2579.2022.03.046
Available at:
https://zwgl1980.csust.edu.cn/journal/vol42/iss3/46
Reference
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