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为研究钢丝网水泥砂浆加固土坯墙体抗震性能,考虑了墙体厚度、竖向荷载和开孔尺寸等多种因素复合作用下对加固墙体抗侧承载力与变形能力的影响程度。采用数理统计理论中的正交分析法并结合砌体二次均质化理论,对加固墙体进行弹塑性数值计算并分析其结果。研究表明:对于未开孔的加固墙体,竖向荷载和墙体厚度对墙体抗侧承载力和变形能力的贡献主次顺序为:竖向荷载>墙体厚度;对于开孔的加固墙体,各因素对墙体抗侧承载力和变形能力的贡献主次顺序为:竖向荷载>开孔尺寸>墙体厚度。由此表明竖向荷载是影响未开孔与开孔加固墙体的主导因素,在对土坯房屋进行加固改造设计时应合理设计屋(楼)面荷载。
In order to study the seismic performance of the adobe wall reinforced by wire mesh cement mortar, considering the effect of multiple factors such as wall thickness, vertical load and hole size on the anti-side bearing capacity and deformation capacity of the reinforced wall, Based on the orthogonal analysis method of mathematical statistics and the secondary homogenization theory of masonry, the elasto-plastic numerical calculation of the reinforced wall is carried out and the result is analyzed. The results show that the order of contribution of vertical load and wall thickness to the anti-side bearing capacity and deformation capacity of the un-perforated reinforced wall is as follows: vertical load> thickness of the wall; for reinforced walls with openings Body, the contribution of each factor to the lateral bearing capacity and deformation capacity of the wall is: vertical load> hole size> wall thickness. It is shown that vertical load is the dominant factor that affects the walls without openings and openings. In the design of reinforcement and modification of adobe houses, the roof (floor) surface load should be reasonably designed.