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以校舍建筑及多层办公建筑等采用大开间带洞口的砌体结构为研究对象,研究了基于装配式技术的砌体结构加固方法。为了降低现场的施工量,加快加固工程进度,采用预制钢筋混凝土墙片对原有砌体墙片进行双面外贴加固,并用销键、灌浆、后浇带等连接方式保证砌体墙片与预制钢筋混凝土墙板的协同工作。为了研究加固后砌体结构的抗震性能,进行了纵墙、加固纵墙、带构造柱纵墙和加固带构造柱纵墙模型的对比试验,分析了各试件的破坏特征、滞回曲线、骨架曲线、刚度退化和耗能能力等抗震性能指标。结果表明:3种连接方式可有效保证预制钢筋混凝土墙板与砖墙的连接,使其具有良好的共同工作性能,采用预制钢筋混凝土贴墙墙板的加固方案可以显著提高砌体结构的抗震性能,强度提高3~5倍,刚度提高4~5倍。
Taking masonry building and multi-storey office building as the research object, the masonry structure with large opening is taken as the research object, and the masonry structure reinforcement method based on the assembly technology is studied. In order to reduce the amount of construction on site and speed up the progress of the reinforcement project, the prefabricated reinforced concrete walls are used to reinforce the existing masonry wall panels on both sides and the connection between the masonry walls and the masonry walls Precast reinforced concrete wall panels work together. In order to study the seismic performance of reinforced masonry structures, the contrast tests of longitudinal walls, reinforced longitudinal walls, longitudinal columns with structural columns and reinforced longitudinal columns are carried out. The failure characteristics, hysteresis curves, Skeleton curve, stiffness degradation and energy dissipation capacity and other seismic performance indicators. The results show that the three kinds of connection ways can effectively ensure the connection between prefabricated reinforced concrete wall and brick wall and make it have good common working performance. The reinforcement scheme of precast reinforced concrete wallboard can significantly improve the seismic performance of masonry structures , 3 to 5 times the strength, 4 to 5 times the rigidity.