爆炸与冲击2017，Vol.37Issue(6)：1057-1064,8.DOI:10.11883/1001-1455(2017)06-1057-08
直坑道内防护门上的爆炸冲击波荷载
Shock wave loads on the blast door in straight tunnel
摘要
Abstract
In order to improve the design and safety assessment of the reliability of blast-resistant structures,we studied the simplified calculation of the shock wave loads caused by HE explosions in straight tunnel based on the theoretical calculation and numerical simulation.Firstly,the differences among existing calculation methods of in-tunnel shock wave loads and their results were evaluated quantitatively in detail and the effects of such differences on structure responses were discussed.Then the design loads on the blast door in a tunnel was studied based on the model test and numerical analysis.The results show that it is important to take into account the coupling effects of the structure response when developing simplified calculation methods for in-tunnel explosion shock wave loads.The existing simplified methods generally disregard such effects and differ from one another significantly,which leads to much more uncertainty in both design and assessment.For close range explosion,the design loads on the door can be taken from pressure at the point on the midline and 1/4 door-width away from the door-side,or from the average pressure on the door,which is reasonably acceptable in a wide range of structure frequencies.The present work can provide a reliable method for protection design of in-tunnel structures.关键词
坑道/冲击波荷载/防护门/动态响应Key words
tunnel/shock wave loads/blast door/dynamic response分类
数理科学引用本文复制引用
张亚栋,阿帅磊,邹宾,于文华..直坑道内防护门上的爆炸冲击波荷载[J].爆炸与冲击,2017,37(6):1057-1064,8.基金项目
国家自然科学基金创新研究群体科学基金项目(51321064) （51321064）
