装配式斜支撑节点钢框架施工温度效应分析  

CONSTRUCTION PROCESS THERMAL EFFECT ANALYSIS OF A PREFABRICATED STEEL FRAME STRUCTURE WITH INCLINED SUPPORT JOINTS

作　　者：舒兴平[1] 刘三玲[1] 姚尧[1] 

机构地区：[1]湖南大学土木工程学院钢结构研究所,长沙410082

出　　处：《工业建筑》2015年第10期48-52,60,共6页Industrial Construction

基　　金：国家自然科学基金项目(51278178);湖南省工程建设产学研结合创新计划项目(KY201125)资助

摘　　要：施工过程中建筑物的主体结构一般直接曝露于自然环境下,环境温度的变化会对结构的内力及变形产生影响。以装配式斜支撑节点钢框架结构为背景进行施工模拟,采用有限元软件MIDAS Gen的单元激活与钝化功能,将施工阶段结构所受的荷载按不同施工步分阶段加载于结构上,其中温度荷载采用正晒面与背晒面的极值温差来模拟。对考虑温差和不考虑温差的工况进行分析对比,结果表明:两种情况下结构构件的内力和变形均存在明显差异,说明需要按实际情况考虑温度作用对施工过程的影响。Normally buildings from start of construction to being put into use, their main structures have been under a state of sun exposure.In this process, the change in temperature will have an effect on the deformations and internal forces of the structures.Based on a prefabricated steel frame structure with inclined support joints, the unit activation and deactivation function of MIDAS Gen were used to simulate all of the actual construction processes, of which the extreme temperature difference of the sun surface and the back sun face was used to simulate the thermal effect and applied them to the model.Then it was contrasted the difference of considering temperature and without considering it, there were obvious differences in the internal force and deformation of the structural members, showing that it is necessary to consider the construction process according to actual conditions.

关 键 词：装配式钢框架 施工模拟 温度效应 极值温差 

分 类 号：TU758.11[建筑科学—建筑技术科学]