摘要
车辆碰撞现有的波形梁护栏端头易发生波形梁板插入车体和翻车的恶性事故,采用有限元仿真和实车足尺碰撞试验相结合的方法,开发出一种满足使用要求的新型波形梁护栏端头.通过有限元分析研究端头各构件的工作性能和原理,确定实车足尺碰撞试验条件,并进行结构优化;实车足尺碰撞试验验证开发的新型波形梁护栏端头能够有效避免波形梁插入车体和翻车事故的发生,保护乘员安全,同时能够为标准段护栏提供足够约束力,保证标准段护栏的正常防护能力,满足相关评价标准的要求.
Serious accident will happen if a car impacts on a traditional W-beam guardrail terminal. A new type of W-beam guardrail terminal was invented by conducting FEA（finite element analysis） computer simulation and full-scale impact tests. The performance and mechanics of the terminal were analyzed through FEA computer simulation, and the fidl-scale impact conditions such as impact point and approach angle were also defined by this means. Full-scale impact tests were conducted for the safety evaluation of the new type of W-beam guardmil terminal. Pas^nger safety was guaranteed by a rolling W-beam to absorb the accident car＇ s kinetic energy, which can avoid the piercing of the W-beam into a car or the car turning over. The containment level of a standard section of barrier was guaranteed by enough constrain force at the guardrail terminal. FttU-scale impact test proved that the performance of the new type guardrail terminal meets the acceptance criteria.
出处
《山东大学学报（工学版）》
CAS
2008年第4期47-52,共6页
Journal of Shandong University（Engineering Science）
关键词
交通安全
护栏端头
有限元方法
实车碰撞试验
波形梁护栏
碰撞条件
traffic safety
guardrail terminal
FEM（finite dement method）
fidl-scale impact test
W-beam guardrail
impact condition
