某高烈度区底部框架-抗震墙砌体房屋加固设计

对8度（0.2g）区一栋建于1960年的4层底部框架-抗震墙砌体房屋进行抗震加固设计。原结构未经抗震设计，构造柱及圈梁设置偏少，抗震能力明显不足，且底部框架-抗震墙为薄弱层。经二次鉴定，1~2层楼层综合能力指数均不满足现行规范要求。选择合理的加固方案进行加固设计：底部增加嵌砌于框架之间的填充墙，以增加其侧向刚度；采用双面钢筋网水泥砂浆面层法和高延性混凝土单面加固法进行墙体抗震性能加固。加固后，结构抗震性能满足现行规范的要求。

Seismic reinforced design of masonry building with frame shear wall at bottom in high intensity area

The seismic reinforced design of a 4-story masonry building with frame and seismic wall at the bottom layer, which was built in 1960 in zone 8 degree (0.2g), is carried out. The original structure has not been subject to seismic design, the number of structural columns and ring beams are small, the seismic capacity is obviously insufficient, and the bottom frame is a weak layer. Based on the results of second appraisal, the comprehensive seismic capacity index of the first and second floors does not meet the requirements of current codes. A reasonable reinforcement scheme is selected for reinforced design. The filling wall embedded between the frames is added at the bottom to increase its lateral stiffness, and the steel mesh cement mortar surface layer method and the single HDC layer are used for seismic strengthening. After reinforcement, the seismic performance of the structure meets the requirements of current codes.