砌体结构受爆破地震波作用破坏特征研究

在建筑物附近进行爆破作业产生的爆破振动，会引起结构一定程度的损伤，对结构的安全性和耐久性产生影响。根据现场工程情况，采用有限元软件ANSYS建立砌体结构的计算模型，对爆破地震波作用下其受力和变形进行数值模拟分析。研究表明，爆破地震波作用时，房屋门、窗户的四角部位和墙角等是易产生应力集中和破坏的关键部位；结构对爆破振动的响应程度随着结构物高度的增加而增大；砌体结构设计施工和在砌体结构附近进行爆破作业时，应采取相应减振措施，以降低爆破振动的危害。

Research on Damage Features of Masonry Structures under Blasting Seismic Wave

Blasting vibration generated by near buildings blasting operations , can cause a certain degree damage , affect security and durability of structure .According to the engineering case , in this paper the finite element soft-ware ANSYS was used to establish calculation model for masonry structure .Its stress and deformation under the action of blasting seismic wave were analyzed based on numerical simulation .The research showed that under im-pact of blasting seismic wave , the corners of doors , windows and walls are critical parts of stress concentration and destruction . 〈br〉 The extent of blasting vibration response of structures rises with structures height increase .In masonry structure design, construction and blasting operations around masonry structure , measures should be taken to reduce the blasting vibration hazards .