南京工业大学学报（自然科学版）2017，Vol.39Issue(2)：107-112,132,7.DOI:10.3969/j.issn.1671-7627.2017.02.018
充填式钢箱-砼组合梁抗弯性能试验研究
Experimental study on the flexural performance of concrete-filled steel-box composite beams
摘要
Abstract
Three different section form filling specimens of the concrete-partial-filled steel-box composite beam were tested under the action of the symmetric reverse concentrated force to study the normal section bending property.The failure form of the beam was investigated,the load deflection curve and the moment curvature curve were obtained.Based on elastic plastic theory,the calculation formulas of ultimate flexural capacity of composite beams were derived,which was in good agreement with the experimental ones.Results indicated that ultimate flexural bearing capacity of the concrete-filled steel-box composite beams, which had good local stability and large ductility, were improved with 10%-21% than non filling composite beams;the partial section filling type had slightly lower ultimate strength than the whole section filling one and had more practical value under the premise of meeting the requirements of the structure.关键词
部分充填式钢箱-砼组合梁/抗弯性能/弹塑性理论/承载力Key words
concrete-partial-filled steel-box composite beam/bending property/elastic plastic theory/bearing capacity分类
建筑与水利引用本文复制引用
莫时旭,林飞扬,胥海宁..充填式钢箱-砼组合梁抗弯性能试验研究[J].南京工业大学学报（自然科学版）,2017,39(2):107-112,132,7.基金项目
国家自然科学基金(51168011,51108109) （51168011,51108109）
广西岩土力学与工程重点实验室资助(11-CX-05) （11-CX-05）
