空军工程大学学报（自然科学版）2013，Vol.14Issue(2)：90-94,5.DOI:10.3969/j.issn.1009-3516.2013.02.020
爆炸作用下跨度对地下结构破坏形态的影响
The Influence of Span for Deep Underground Arch Structure on Failure Modes under Blast Loading
摘要
Abstract
The blast load is very important to the construction of underground rock engineering and the defense engineering project. The study on underground structural failure modes under blast loading is always a hot problem. The underground structure is developing to big span direction. But so far, the study of big -span deep underground structure's dynamic response is seldom. The structural mechanics under blast loading is still not known well. So, the nonlinear dynamic finite element procedure of ANSYS/LS-DYNA is used and the fluid-solid coupling algorithm is selected to study the dynamic response of underground structure with different spans. The explosion is closed and the detonating distances are changed. The analysis shows that the mechanics status of big-span is complete changed compared to the small-span one. And also the maximum stress curves of structures with different spans are obtained.关键词
爆炸荷载/地下拱形结构/破坏形态/数值模拟Key words
blast load/underground arch structure/failure mode/numerical simulation分类
建筑与水利引用本文复制引用
孙惠香,许金余,朱国富,祝捷,康婷..爆炸作用下跨度对地下结构破坏形态的影响[J].空军工程大学学报（自然科学版）,2013,14(2):90-94,5.基金项目
国家自然科学基金资助项目(51208506 （）
51208507) （）
