方钢管-钢骨混凝土双向偏压试件试验研究与理论分析  

EXPERIMENTAL RESEARCH AND THEORETICAL ANALYSIS OF SQUARE TUBE FILLED WITH REINFORCED CONCRETE SUBJECTED TO AXIAL COMPRESSION AND BI-AXIAL BENDING MOMENT

作　　者：王连广[1] 赵同峰[2,3] 安山河 

机构地区：[1]东北大学资源与土木学院,辽宁沈阳110004 [2]大连理工大学土木水利学院,辽宁大连116024 [3]沈阳炮兵学院基础部,辽宁沈阳110162

出　　处：《工程力学》2009年第5期137-141,147,共6页Engineering Mechanics

基　　金：国家教育部博士点基金项目(20050145012);辽宁省重点实验室基金项目(JG-200601);辽宁省科技攻关项目(20060708)

摘　　要：进行了9根方钢管-钢骨混凝土双向偏压试件的试验研究,研究不同长细比、偏心率、配骨率及加载角度条件下试件的力学性能。结果表明:试件的承载力随着长细比的增加缓慢下降;偏心率的增长导致承载力迅速降低;配骨率的增加使试件的承载力逐渐增长;加载角度的变化对承载力的影响有限。在此基础上,编制了双偏压程序,计算结果与试验结果吻合很好。最后通过计算结果的回归分析,得出了实用的方钢管-钢骨混凝土构件双向偏压承载力计算公式。This paper presents an experimental research of 9 square steel tube columns filled with steelreinforced concrete subjected to axial compression and bi-axial bending moment. The primary parameters of the specimens were slenderness ratio, eccentricity ratio, steel-reinforced ratio and angles of loading. The tested results showed that 1） the bearing capacity decreased with the increase of the slenderness ratio and eccentricity ratio; 2） increasing steel-reinforced ratio help to raise the bearing capacity gradually; 3） loading angle had little influence on bearing capacity. Furthermore, an analysis program was developed, which generates results agreeing well with the test data. At last, formula to calculate the bearing capacity of two-way eccentrically loaded columns are proposed.

关 键 词：方钢管 偏压 分析 承载力 计算公式 

分 类 号：TU398[建筑科学—结构工程]