泡沫铝桥墩防撞装置的试验研究  

Experimental Research of Pier with Foam Aluminum Protection Devices

作　　者：巫祖烈[1,2] 仝瑞金[2] 李世亚[1] 曹晓川[1] 

机构地区：[1]重庆交通大学桥梁结构工程交通行业重点实验室,重庆400074 [2]重庆交通大学土木建筑学院,重庆400074

出　　处：《结构工程师》2009年第3期125-130,共6页Structural Engineers

基　　金：重庆交通大学(桥梁)结构工程重点实验室开放基金资助项目(2006-2)

摘　　要：通过对不同厚度、不同结构形式的泡沫铝桥墩防撞装置进行的对比模型试验,得出不同防撞装置的耐撞性和对桥墩不同的防护效果,并分析了撞击规律及其原因,以寻求能够对桥墩保护作用具有更明显优势的装置厚度和结构形式;在试验基础上,利用有限元分析软件ANSYS/LS-DYNA对各工况碰撞过程进行了模拟分析,得出了与试验结果相近的结论;相对于承受相同荷载的裸墩,泡沫铝桥墩防撞装置能有效地吸收撞击能量,显著降低荷载对桥墩的作用,因而有良好的防撞效果;研究了二次防撞效果;探讨了装置厚度及结构形式与防撞效果的关系。The model tests for piers with different thickness and different structural type of foam aluminum protection devices were eontrastively analyzed to get their diverse effect on pier and also to summarize the impact disciplinarian and causation, in order to find out the clearly preponderant thickness and structural type. Based on the test, using the finite element ANSYS/LS-DYNA, the simulated process of every pier collision was analyzed. The calculation results of finite element analysis coincides with that of the experiment. The results also indicated that aluminum protection device can decrease the effect of the load on the pier. At the same time the secondary effect of protection,and the relationship between the thickness,the structral type of device and protection effect were also discussed.

关 键 词：泡沫铝 防撞装置 冲击试验 有限元 

分 类 号：U443.26[建筑科学—桥梁与隧道工程]