中文摘要：

针对老旧砌体房屋采用外套预制钢筋混凝土墙板加固，并在此基础上提出在加固后的砌体顶部加层隔震的加固增层方案，主要研究加层隔震对加固效果的影响。建立初始砌体结构、加固砌体结构、加层非隔震结构和加层隔震结构的分析模型，分析4种结构在多遇地震和罕遇地震作用下的动力响应和非线性损伤，并对抗震性能较优的加层隔震结构，进行隔震层参数优化分析；对各种加固方案进行1：4缩尺模型的振动台试验，研究各加固方案的抗震性能，并与数值分析结果进行对比。结果表明，对原老旧砌体结构进行加固后，外套预制混凝土墙片承担大部分的地震剪力，砌体所承担的剪力大幅降低，加固效果明显，而对加固后的结构进行加层隔震后又会使结构基底剪力明显下降，结构的抗震性能进一步提升；对于加层隔震结构，根据结构基底剪力最小的原则存在最佳屈重比。研究为老旧砌体房屋的加固改造和功能提升提供有益借鉴。

英文摘要：

Some methods are proposed by adding other stories on the .top of old masonry structure and reinforcing it with external prefabricated reinforced concrete structure. To study the reinforcement and seismic isolation effect, several structural models, including the original masonry model, the reinforced masonry model , the non-isolation model （by adding stories on the top of the reinforced masonry structure without LRB） and the seismic isolation model （by adding stories on the top of the reinforced masonry structure with LRB ）, are established, then the dynamic response and nonlinear damage of the four types of structures are analyzed under the frequent and rare earthquake action, respectively. Based on the seismic isolation model which possesses better seismic performance in the foregoing analysis, the parameters of seismic isolation layer were optimized. In the meanwhile, the shaking table tests of 1/4 scale models are carried out to study the seismic performance of different models. The testing and the theoretical results are compared, and the results show that the base shear force of masonry structure may be greatly reduced when it is reinforced by the external prefabricated reinforced concrete wall which bears most of the shear force due to earthquake, and adding stories on the top of the reinforced structure using seismic isolation technology can further reduce the base shear force of masonry structure and improve seismic performance. For the seismic isolation model, the flexion-weight ratio was found to reach a minimum base shear force of the structure. This study may be referred for the reinforcement, reconstruction and improvement of old masonry structure.