摘要
为了研究战时条件下爆炸荷载作用对土埋式钢油罐的强度问题,具体针对目前加油站使用较为广泛的30m3钢油罐,运用壳体动力有限元方法对其动力响应进行计算;并根据钢油罐的结构特性及其所受荷载形式,对危险截面和区域的动应力做了相应的数值分析;计算表明,在核爆冲击波作用过程中,油罐结构最大法向变形产生于跨中截面;对于地面超压常值为0.05MPa的核爆动荷载作用下埋深1.2m的钢油罐,最大动应力产生在钢油罐的中间截面且最大动应力均远小于材料的屈服应力。
In order to investigate the intension of the soil-embedded steel tank influenced by the action of blast load in war, in this paper the dynamic response of 30m3 steel tank which is widely used in filling station at present was calculated with the shell dynamic FEM method. Then, the numerical analysis of dynamic stress in dangerous sections and zones was made according to the structure peculiarity and the load form of the steel tank. The result shows that the tank＇ s largest normal deformation exists in the section of middle span under the nuclear explosion impact ; for the steel tank with embedded depth 1.2m, subjected to 0.05MPa ground excessive pressure, the largest dynamic stress is in the middle section of the tank and is much smaller than the material＇ s yield stress.
出处
《地下空间与工程学报》
CSCD
北大核心
2009年第3期450-454,共5页
Chinese Journal of Underground Space and Engineering
关键词
爆炸荷载
钢油罐
动力响应
数值分析
blast loads
steel tank
dynamic response
numerical analysis
作者简介
马林建（1984-），男，江苏盐城人，博士研究生，主要从事结构工程与防护工程研究。E-mail：npl．007007@yahoo．com．cn
