施工期框架结构竖向变形差异及其影响  

Difference on the Vertical Deformation of Frame Structure Under Construction and Its Effects

作　　者：潘林[1,2] 宋灿[3] 

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]新乡学院建筑工程系,新乡453000 [3]华北水利水电学院土木与交通学院,郑州450011

出　　处：《武汉理工大学学报》2011年第8期94-98,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51008284)

摘　　要：在施工期间,框架柱之间轴压比的不同以及混凝土收缩和徐变的存在,会导致构件之间存在竖向变形差异,从而导致梁柱的实际内力与不考虑竖向变形的结构计算结果不符。为了研究竖向变形差异对框架结构的影响,以某混凝土框架结构建筑为对象,分析了施工过程及收缩徐变对框架结构竖向变形及内力的影响,并将有限元法和简化计算方法得到的结果进行了对比,结果表明在结构分析和设计时应考虑竖向变形差异对框架结构内力的影响。During the period of construction,shrinkage and creep of concrete and different axial compression ratio result in the difference on vertical deformation between columns of frame structure.And then result in the difference between the actual internal force of beams and columns and that of design result without considering vertical deformation in frame structure.In the paper,in order to obtain the effect of vertical deformation deference on frame structure,analysis were carried out on the effect of construction procedure and shrinkage and creep of concrete on the vertical deformation and internal force of a high building of frame structure and comparison was made between vertical deformation results obtained from FEM method and simplified calculation method.Results show that the difference on vertical deformation caused by creep and shrinkage of concrete should be considered during structure analysis and design of frame structure.

关 键 词：框架结构 施工过程 收缩 徐变 竖向变形 内力 

分 类 号：TU973[建筑科学—结构工程]