落锤冲击加固砌体填充墙的试验研究

Experimental research on reinforced masonry infill walls subjected to impacts of drop hammers

对砌体填充墙进行加固以提高其在爆炸冲击作用下的安全可靠度是墙体抗爆设计的一个重要问题。结合目前墙体抗爆试验方法的优缺点和研究需求,利用落锤试验机进行了4片墙体的分级加载冲击试验。通过对冲击后墙体和加固材料损坏状态的定性分析,得知CFRP布和聚亚胺酯防护膜对墙体的承载能力有一定程度的提高效应,但在防护能力上,聚亚胺酯防护膜要优于CFRP布。

In order to improve the safety reliability of masonry infill walls under blast loads,it is important to strengthen the wall with reinforcement material in protective design. Considering the advantages and disadvantages of existing testing methods on wall anti-detonation and the requirements of studies,four wall specimens were tested under multi-stage impact loading with drop hammer machine. The qualitative analysis of damage situation of the walls and reinforcement materials shows tha,t both CFRP and polyurethane protection membrance could enhance the capability of masonry walls in resisting impact load in a certain extent,while polyurethane protection membrane are superior to CFRP in protective capability.