Test and application of movable steel barrier with grade SB light composite corrugated beam

IF 0.6 Q4 ENGINEERING, MECHANICAL Journal of Measurements in Engineering Pub Date : 2023-12-23 DOI:10.21595/jme.2023.23386

Aling Zhang, Qianmiao Bu, Wen Zhang, Guomeng He, Yong Deng

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Abstract

In this study, movable steel barrier with grade SB light composite corrugated beam is designed, which addresses the problems of the prior central partition belt portable guardrail in terms of easy mobility, local safety, easy construction, and other indications. This guardrail employs explicit algorithms to conduct a dynamic finite element simulation analysis and a real vehicle crash test, and verifies the guardrails' blocking, guiding, and buffering functions in accordance with the SB level collision conditions listed in the Standard for Safety Performance Evaluation of Highway Barriers (JTG B05-01-2013). According to the results, the safety performance of SB grade lightweight composite corrugated beam movable steel guardrail meets the requirements of the Standard for Safety Performance Evaluation of Highway Barriers (JTG B05-01-2013). In addition, the guardrail can be opened for 12 meters in 1 minute and returned to close in 2 minutes. The opening and restoration of the movable guardrail is superior to the previous central divider movable guardrail. This guardrail has been tried for some high-speed and its safety performance has been verified again in actual high-speed vehicle collisions.

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采用 SB 级轻型复合波形梁的活动钢护栏的试验和应用

本研究设计了采用 SB 级轻型复合波形梁的可移动钢护栏，解决了以往中央分隔带移动式护栏在移动方便、局部安全、施工简便等方面的问题。该护栏采用显式算法进行动态有限元仿真分析和实车碰撞试验，按照《公路护栏安全性能评价标准》（JTG B05-01-2013）中列出的 SB 级碰撞条件，验证了护栏的阻挡、导向和缓冲功能。结果表明，SB 级轻质复合波形梁活动钢护栏的安全性能满足《公路护栏安全性能评定标准》（JTG B05-01-2013）的要求。此外，该护栏可在 1 分钟内打开 12 米，并在 2 分钟内恢复闭合。活动护栏的开启和恢复性能优于之前的中央分隔带活动护栏。该护栏已在部分高速路段试用，其安全性能在实际高速车辆碰撞中再次得到验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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