组合式桥梁护栏防撞性能仿真与试验

为了提高特大型桥梁的道路行车安全性,通过理论计算与形式调查,确定了一种组合式护栏的基本结构形式,采用基于有限元理论的计算机仿真方法对护栏结构进行了多次优化设计,并通过实车足尺护栏碰撞试验验证了最终优化结构的防护性能。研究结果表明:该组合式护栏的结构能有效防护失控车辆的碰撞,防护能量可达到420 kJ以上,达到中国规范要求的SA级;试验证明采用计算机仿真方法获取的数据可靠有效。

Simulation and experiment of crashworthiness for combined bridge guardrail

To improve large bridge traffic safety quality,the basic structure of a combined bridge guardrail was identified by theoretical calculations and type investigation.A number of guardrail structure optimization designs were conducted by using computer simulation based on finite element theory,and the crashworthiness of optimized guardrail was validated by full-scale vehicle crash test.Analysis result shows that the guardrail structure can effectively protect errant vehicle,and its crashworthiness can reach mo...