基于截面条带法的高强混凝土柱的滞回性能的分析

An Analysis of Cyclic Behavior of High-Strength Reinforced Concrete Columns Based on Section Layer Method

为了研究高强混凝土柱的滞回性能,采用了一种更简便实用的分析方法———截面条带法.并根据截面条带法编制了计算高强混凝土柱的荷载-位移(P-Δ)滞回曲线的计算程序,其数值计算结果与实验结果吻合良好.利用该计算程序,笔者分析了配有高强钢筋的高强混凝土柱中,混凝土强度、轴压比、配箍率、箍筋强度等级及间距、纵向钢筋配筋率及强度等级等参数对柱的滞回曲线的影响,为进一步研究高强钢筋作柱的纵筋和高强钢筋作柱的横向约束钢筋对钢筋混凝土柱延性的影响提供了良好的条件.

A simplified calculating method - section layer method - is put forward for cyclic behavior of high strength concrete column. The procedure with this method can analyze cyclic behavior of any sections of high strength concrete column. The calculation results agree well with the experiments of literatures. This procedure can analyze the influences of parameters that include strength of concrete, axial load level, stirrup volume ratio, strength and space of stirrup, area and strength of longitudinal steel etc. on hysteretic curves for high - strength reinforced concrete columns. It is helpful for investigation of reinforced concrete columns ductility with high- strength reinforcement as longitudinal steel and stirrups.