大偏心受压围套加固钢筋混凝土柱正截面承载力的理论分析

Theoretical Analysis of Load Capacity of EccentricalReinforced Concrete Columns with Concerete Cover

利用组合截面平截面应变假定， 对初始荷载为轴向压力的围套加固钢筋混凝土构件的截面应变进行了推导， 分析了极限状态时组合截面的相对界限受压区高度及混凝土与钢筋的应力大小，并提出实用计算公式。

Based on the plane_section hypothesis of combination section,this paper describes the section strains of reinforced concrete columns with concrete cover under initial axial pressure and analyses the height of relative limit compression area and the stress of concrete and reinforcing bar of combination section in ultimate state.Meanwhile,the paper proposes practical calculation method of load capacity.