钢-混组合护栏的力学模型及仿真分析  

Mechanical model and simulation analysis of steel-concrete composite barrier

作　　者：张效忠[1,2] 姚文娟[1] 毛安雄[2] 

机构地区：[1]上海大学土木工程系,上海200072 [2]衢州学院建筑工程系,浙江衢州324000

出　　处：《武汉大学学报（工学版）》2012年第5期608-611,618,共5页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:11072143);浙江省新苗人才计划基金资助(编号:2010R427005)

摘　　要：针对汽车与钢-混组合护栏碰撞过程中汽车和混凝土共同变形,建立汽车与钢-混组合护栏碰撞的计算模型,并用有限元通用显式程序LS-DYNA对碰撞运动进行数值仿真分析.在分析组合护栏中各组件在碰撞中的作用的基础上对组合护栏的抗撞能力进行综合评价.因钢-混组合护栏中钢结构能够在碰撞中吸收较多的能量,所以组合护栏的防撞能力得到很大的提高.仿真分析结果证明组合护栏防撞能力相对其他类型的护栏具有较大的优势.该研究为新型防撞护栏的设计提供了新的方法.According to co-deformation of both sides collided,computational mechanics model of collision between automobile and steel-concrete composite barrier is established.Numerical simulation analysis of collision course is done using the finite element common explicit program LS-DYNA.A comprehensive evaluation about the anti-collision of the composite barrier is evaluated on the basis of the roles of the various components which are analysed in this paper.Steel structure of composite barrier can absorb more energy in collisions;so the anti-collision ability of composite barrier is greatly improved.Results of simulations show that anti-collision ability of composite barrier has greater advantages than that of other types of barriers.The study provides a new way for new crash barrier design.

关 键 词：组合护栏 力学模型 仿真分析 抗撞能力 

分 类 号：U491[交通运输工程—交通运输规划与管理]