东南大学学报（英文版）2009，Vol.25Issue(1)：89-93,5.
外包钢-混凝土连续组合梁的负弯矩极限承载力
Ultimate negative bending-moment capacity of outer-plated steel-concrete continuous composite beams
陈丽华 1李爱群 2娄宇 1李培彬3
作者信息
- 1. 东南大学土木工程学院,南京,210096
- 2. 合肥工业大学土木建筑工程学院,合肥,230009
- 3. 中国电子工程设计院,北京,100840
- 折叠
摘要
Abstract
Static load tests and bearing capacity analyses are cardeA out for two outer-plated steel-concrete continuous composite beams.The load-deflection curve and the loat-strain culve of specimens are obtained and analyzed.The test results indicate that effective cooperation can be achieved by the shear-resistant connection between the reinforcement in the negative moment area and the outer-plated steel beam,and the overall working performance of the composite beams is favorable.At the load-bearing limiting state,the plastic strain on the maximum negative and positive moment section becomes fully developed so as to form relatively ideal plastic hinges.With the increase in the reinforcement ratio,the moment-carrying capacity of the composite beams improves significantly,but the ductility of the beams and the rotation ability of the plastic hinges decrease.The formulae for calculating the limit bending capacity in the negative moment area of outer-plated steel-concrete composite beams are proposed based on the test data.The calculated results agree well with the test results.关键词
外包钢-混凝土组合梁/连续梁/负弯矩/受弯承载力Key words
outer-plated steel-concrete composite beam/continuous beam/negative moment/bending-moment bearing ca-pacity分类
建筑与水利引用本文复制引用
陈丽华,李爱群,娄宇,李培彬..外包钢-混凝土连续组合梁的负弯矩极限承载力[J].东南大学学报（英文版）,2009,25(1):89-93,5.
