|本期目录/Table of Contents|

[1]蒋丽忠,刘海峰,李兴.工字型钢-混凝土连续组合梁腹板局部稳定性分析[J].建筑科学与工程学报,2009,26(04):35-39.
　JIANG Li-zhong,LIU Hai-feng,LI Xing.Local Stability of I-section Steel-concrete Continuous Composite Beam Web[J].Journal of Architecture and Civil Engineering,2009,26(04):35-39.
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工字型钢-混凝土连续组合梁腹板局部稳定性分析(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
26卷
期数:
2009年04期
页码:
35-39
栏目:
出版日期:
2009-12-20

文章信息/Info

Title:
Local Stability of I-section Steel-concrete Continuous Composite Beam Web
作者:
蒋丽忠，刘海峰，李兴
中南大学土木建筑学院,湖南长沙410075
Author(s):
JIANG Li-zhong, LIU Hai-feng, LI Xing
School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, China
关键词:
工字型钢-混凝土连续组合梁;  腹板;  承载力;  失稳模型;  局部稳定性
Keywords:
I-section steel-concrete continuous composite beam;  web;  bearing capacity;  instability model;  local stability
分类号:
TU398
DOI:
-
文献标志码:
A
摘要:
对工字型钢-混凝土连续组合梁负弯矩区腹板在复合应力作用下的力学性能进行了研究,提出了工字型组合梁腹板在复合应力作用下的局部稳定性计算模型,建立了相应的临界屈曲应力计算公式; 基于组合梁腹板的稳定性特点和偏心受压与剪切作用下的相关方程,计算了工字型组合梁腹板在复合应力状态下的弹性屈曲因数,采用势能驻值原理分析得出了连续组合梁负弯矩区腹板稳定的临界应力,提出了弹性受力阶段腹板不设横向加劲肋的高厚比限值。计算结果表明:该计算方法有广泛的适用性,且大部分情况下可以放宽对高厚比的限制,为工字型组合梁负弯矩区腹板的合理优化设计提供了参考。
Abstract:
The mechanical behaviors of continuous composite beam web in negative moment area under the load of complicated stress were studied, and the calculation model of local stability under the load of complicated stress was proposed, meanwhile, the corresponding calculation formulas of limited buckling stress were built. Based on the stability characteristics of composite beam web, according to the relevant equations under the action of eccentric compression and shear, the elastic buckling factors of I-section composite beam web under the complicated stress state were calculated. Furthermore, using potential energy principle, the limited stresses of continuous composite beam web in negative moment area were analyzed, and the limiting height to thickness ratio was also determined for webs without stiffing ribs in the elastic stage. The calculated results show that the method has broad applicability, and in most cases, the restrictions of height to thickness ratio can be relaxed, and it can provide reference for the reasonable optimization design of I-section composite beams web in negative moment area.

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备注/Memo

备注/Memo:
收稿日期:2009-07-05
基金项目:国家自然科学基金项目(50778177); 湖南省杰出青年基金项目(07JJ1009)
作者简介:蒋丽忠(1971-),男,湖南衡山人,教授,博士研究生导师,工学博士,E-mail:lzhjiang@mail.csu.edu.cn。
更新日期/Last Update: 2009-12-20