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该文针对天津现存的历史风貌建筑普遍存在砂浆强度低的情况,进行了墙体结构加固试验与模拟计算分析。采用原材料制作了2片墙体试件、2片钢筋网水泥砂浆抹面加固试件,对其进行了低周反复加载试验,研究了砖砌体及加固砖砌体试件的抗震性能;应用等效体积单元(RVE)法模拟砖砌体,求得了砖砌体的等效参数,用ANSYS模拟了加固砖砌体试件的低周反复加载,并与试验结果进行了对比分析,验证了钢筋网水泥抹面加固低强度砖砌体的可行性,为历史风貌建筑的加固提供技术支撑。
In this paper, the mortar strength is low for the existing historical buildings in Tianjin, and the reinforcement test and simulation calculation of the wall structure are carried out. Two wall specimens and two steel mesh cement mortar plastering reinforcement specimens were made from raw materials, and were subjected to low cycle repeated loading test, and the seismic performance of brick masonry and brick masonry specimens was studied. The effective volume element (RVE) method was used to simulate the brickwork, and the equivalent parameters of the brickwork were obtained. The low-cycle repeated load of the brickwork was simulated by ANSYS, and compared with the test results, The feasibility of reinforcing the low-strength brickwork with the mesh cement plastering surface provides the technical support for the reinforcement of the historical style building.