高强型钢混凝土柱承载力计算的研究现状

Analysis of study status on calculation of bearing capacity of high-strength steel reinforced concrete columns

目前型钢混凝土柱中的型钢与混凝土越来越多地采用高强材料,形成了三类高强型钢混凝土柱:采用高强型钢的类型、采用高强混凝土的类型、同时采用高强型钢与高强混凝土的类型。目前有关高强型钢混凝土柱承载力的研究可分为两大类:国内外主要规范(规程)中的计算方法,规范(规程)以外的研究及方法。基于对这两大类研究的介绍与对比分析,从正截面偏压承载力、正截面轴压承载力和斜截面受剪承载力三方面分别给出了相应的推荐计算方法或者指明了待完善的研究方向。

At present,the section steel and concrete in the steel reinforced concrete columns are increasingly using high-strength mate⁃rials.Three types of high-strength steel reinforced concrete columns have been used:type using high-strength section steel,type using high-strength concrete,and type using both high-strength section steel and high-strength concrete.The existing study on the bearing capacity of high-strength steel reinforced concrete columns can be divided into two categories:calculation methods in major domestic and foreign codes(specifications);study and methods outside the codes(specifications).Based on the introduction and comparative analysis of these two categories of study,the corresponding recommended calculation methods were proposed or the research direction needed to be perfected were pointed out from three aspects:eccentric load bearing capacity of the normal section,axial load bearing ca⁃pacity of the normal section and shear bearing capacity of the oblique section.