反复荷载作用下高强约束混凝土柱的弯曲延性  

FLEXURAL DUCTILITY OF CONFINED HIGH STRENGTH CONCRETE COLUMNS UNDER CYCLIC LOADS

作　　者：袁万城[1] G.Simsch G.Knig 

机构地区：[1]同济大学 [2]德国达姆斯达特理工大学

出　　处：《土木工程学报》1995年第5期55-61,共7页China Civil Engineering Journal

基　　金：德国科学联合会(DFG)的资助

摘　　要：本文通过对多根混凝土柱的试验与分析,研究在常轴向荷载作用下混凝土柱遭受反复荷载的延性性能.一方面研究箍筋的体积含筋率和纵向钢筋的截面含筋率以及轴向荷载对弯曲延性的影响,另一方面比较高强混凝土柱与普通强度混凝土柱延性的差异.研究结果表明,箍筋的约束作用可以大大提高高强混凝土柱的弯曲延性.In this paper, the quasi-static tests and analyses of reinforced concrete columns with lateral confinement have been carried out under axial load and cycli-loads so as to investigate the effect of volumetric ratio of lateral confining reinforcement for core concrete section and longitudinal reinforcement ratio for gross concrete sectional area on the flexural ductility, and to compare the difference of ductility between high-strength concrete columns and normal-strength concrete columns under the same ratio of axial load.Test results indicate that for high strength concrete columns, flexural ductility could be significantly increased by using lateral confining reinforcement.The analytical results show a good agreement with test results.

关 键 词：钢筋混凝土 柱 反复载荷 弯曲延性 

分 类 号：TU375.301[建筑科学—结构工程]