砌体与钢筋混凝土框架混合结构抗震性能试验研究

摘要

Seismic behaviors of mixed structure by masonry and reinforced concrete frame were researched by low cyclic loading test.3 specimens were designed which respectively were brick wall,pure frame and mixed structure.Test results indicate that the deformation capacity and energy dissipation capacity of mixed structure are poor,and sharp reduction of resistance will appear when ultimate resistance reaching.Failure of mixed structure mainly shows brittle shear failure of brick wall,whereas damage of the frame appears to be slight which mainly shows flexural cracks distributed among beam ends and column ends.Finally,appraisal and strengthening method of mixed structure were proposed.%对砌体与钢筋混凝土框架混合结构的抗震性能进行了低周反复试验研究,共设计3个试件,分别为砖墙、纯框架及混合结构.试验结果表明,混合结构的变形能力和耗能能力较差,承载力达到极限后迅速降低.混合结构的破坏主要表现为砖墙的脆性剪切破坏,框架部分损伤较轻,主要表现为梁端、柱端弯曲裂缝.最后,提出了混合结构的鉴定与加固方法.