摘要
为了研究施工期混凝土收缩徐变对结构构件的影响,采用ANSYS软件模拟分析了施工期混凝土构件的收缩值和徐变值,得到了施工阶段的结构弯矩图;结合可靠度分析方法研究收缩徐变对施工期混凝土框架结构的失效概率的影响。研究结果表明:考虑收缩徐变的施工期混凝土框架结构梁失效概率偏大;收缩徐变对柱端弯矩和梁跨中弯矩影响有利;第2层结构拆模时梁失效概率最大,此阶段梁应进行重点安全控制。
In order to study the effect of concrete shrinkage and creep on structural members,the ANSYS software was used to simulate and analyze shrinkage and creep values of concrete members during construction. The structure bending diagrams were got during construction. With reliability analysis method the effect of shrinkage and creep on concrete frame structure's failure probability during construction was researched. The result shows that failure probability of structural beam is excessive when considering shrinkage and creep. The shrinkage and creep has a beneficial effect on bending of column and beam. The beam has the most failure probability when the second layer is removed. And the beam in this stage should be on security control.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2015年第3期54-58,7,共5页
Journal of Henan University of Science And Technology:Natural Science
基金
广西自然科学基金项目(2011GXNSFA018031)
广西矿冶与环境科学实验中心项目(KH2011YB025)
关键词
施工期
钢筋混凝土结构
收缩
徐变
construction period
reinforced concrete structure
shrinkage
creep
