网状配筋砖砌体在局压荷载作用下的承载力研究

Research on the local bearing of masonry with reinforced network

通过8组不同配筋率和砂浆强度的网状配筋砖砌体试件局压承载力试验,对其破坏形态及承载力进行了研究分析,并利用ANSYS有限元软件对试件受力情况进行了模拟计算,分析结果与试验结果吻合较好。同时设计了2组模拟墙片进行有限元扩大参数分析,验证了网状配筋有效地改善了砌体的局压性能,提高了砌体的局压承载力。综合试验结果与有限元分析,参考现行规范对砌体局压承载力与偏压承载力的计算,提出了网状配筋砖砌体局压承载力的计算公式。

Through local pressure bearing capacity test on 8 groups of masonry with reinforced network, which is different in ratios of reinforcement and mortar intensity. This paper analyzes the damage form and bearing capacity. A modeling analysis at the stress of test pieces is also performed with the software of ANSYS finite element and the results are consistent with the actual experimental results. Analysis at expanded parameters of finite element is performed on two groups of modeling walls. This verifies that the reinforced network can significantly improves mechanism of masonry under local compression and so increases the local beating capacity. Finally this paper proposes the calculation formula for the local beating capacity of masonry with reinforced network,combining the experimental results, finite element analysis, and current standards.