外包钢板对钢筋混凝土桥墩撞击性能影响的试验研究

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Abstract Dynamic performance model tests were conducted on an ordinary RC pier and a steel encased concrete pier under vehicle collisions, respectively. Through measuring and comparatively analyzing impact force time history curves, pier acceleration and reinforcement strain time history curves, the effect of the encased steel plate on improving the pier’s anti-collision ability was studied. The results showed that vehicle impact force and pier acceleration at the impact position of the steel encased concrete pier are less than those of the ordinary RC pier, and the reinforcement peak compressive strain at the pier root also greatly reduced; so, the encased steel plate can effectively reduce vehicle impact actions exerted on bridge piers, therefore it is an effective method to protect pier structures from vehicle impacts.

Key words： impact performance vehicle bridge pier encased steel plate reinforced concrete (RC)

Received: 25 July 2016 Published: 28 November 2017

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2017/V36/I23/175

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