钢管高强混凝土偏压柱性能与承载能力的研究  

Behavior and Bearing Capacity of Eccentrically Loaded Steel Tubular Columns Filled with High-Strength Concrete

作　　者：顾维平[1] 蔡绍怀[1] 冯文林[1] 

机构地区：[1]中国建筑科学研究院建筑结构研究所

出　　处：《建筑科学》1993年第3期8-12,共5页Building Science

基　　金：国家自然科学基金;城乡建设科技发展基金

摘　　要：本文介绍了两种长细比、五种偏心率共12个钢管高强混凝土偏压柱试件(f_()cu=88.5MPa)的试验研究工作。研究表明,具有较高套箍指标的钢管高强混凝土偏压柱的性能与普通钢管混凝土相似,但当偏心率大于1时钢管高强混凝土的承载能力衰减得较快。为了充分利用高强混凝土的强度,应控制钢管高强混凝土柱子的偏心率小于1,这样普通钢管混凝土承载能力偏心率影响折减系数φ_e的计算公式也适用于钢管高强混凝土偏压柱。This paper reports an experimental study on eccentrically loaded steel tubular columns filled with high-strength concrete (HSC) of 89 MPa, 12 specimens with 2 types ofslender ratio and 5 sets of eccentricity ratio were tested. The test results show that the behavior of steel tubular columns filled with HSC is similar to that with normal concrete. However, when the eccentricity ratio is larger than 1, the loading capacity of steel tubular columns filled with HSC decreases faster than that with normal concrete. It is suggested that in order to fully use the strength of HSC, the eccentricity ratio should be kept lower than 1, and the formula predicting the strength reduction factor due to eccentricity for normal concrete-filled steel tubes can be used for steel tubular columns filled with HSC.

关 键 词：高强混凝土 钢管 偏压柱 承载力 

分 类 号：TU528.31[建筑科学—建筑技术科学]