规则变轴力下钢筋砼框架柱的抗震性能研究

Research on Mechanical Behaviors of Reinforced concrete frame columns subjected to Lateral Cyclic losds and Regular Variable axialloads simultaneously

本文研究了钢筋砼框架柱在变轴力下受反复水平荷载作用时滞回特性 ,分析了轴压比变化幅度、轴压水平等因素对构件滞回特性的影响 ,比较了变轴力和定轴力下压弯构件滞回特性的异同 ,共完成共六根柱在轴力与水平位移成比例情况下变化的低周交变加载试验。

The purpose of this thesis is to investigate the tysteretic characteristics of R/C frame Columns subjected to lateral cyclic loads and regular Variable axial loads simultaneously,to discuss its ductility,hysteretic damping and equivalent viscous damping coefficient,energy dissipation ability and to analyse the effect of the ratio of axial force to compressive strength,the magnitude of axial force on the hysteretic Characteristics,and the behaviors of theR/Ccolumn subjected to changing axialload are compared with these of the R/Ccolumn subjected to constant axial load.The cyclic test of six column specimens which is under the variety of the test ratio of axial load to displacement were carried out.In the final of this paper,the next research were proposed.