某商务中心地下广场超长结构温度应力分析  

Analysis of Temperature Stress of Ultra-Long Structure of Underground Plaza in A Business Center

作　　者：刘婷 刘振勇 孙天荣[3] LIU Ting;LIU Zhenyong;SUN Tianrong(School of Architecture Economics and Management,Shanghai Urban Construction Vocational College,Shanghai 200438,China;School of Railway Transportation,Shanghai Institute of Technology,Shanghai 201418,China;China Railway Shanghai Design Institute Group Co.,Ltd.,Shanghai 200070,China)

机构地区：[1]上海城建职业学院建筑经济与管理学院,上海200438 [2]上海应用技术大学轨道交通学院,上海201418 [3]中铁上海设计院集团有限公司,上海200070

出　　处：《应用技术学报》2020年第3期259-263,共5页Journal of Technology

摘　　要：温度应力是超长混凝土结构产生裂缝的主要因素,也是设计需要解决的主要问题。应用有限元计算软件SAP2000对某商务中心地下广场超长结构温度应力,分析了地下混凝土结构从施工到正常使用全过程中可能受到的温度荷载类型,并将混凝土自身收缩效应等效为温度荷载;用线性分布法计算作用在建筑物上的各类温度荷载,制定了超长结构温度作用计算工况。在此基础上,得到此商务中心地下广场在最不利温度工况下的温度应力场。分析结果表明,地下广场超长结构的温度计算模型,可以为相似工程的施工图设计起到一定的指导作用。Temperature stress,the main factor responsible for causing cracks in ultra-long concrete structures,is also the main problem to be solved in design.The finite element calculation software SAP2000 was used to analyze the temperature stress of the ultra-long structure of a commercial square in a business center.The type of temperature load that may be encountered in the entire process from construction to normal use of the underground concrete structure was analyzed.The self-shrinkage effect of the concrete was identified as that of the temperature load.The linear distribution method was used to calculate the various temperature loads acting on the building,and the working conditions for the calculation of the temperature effect of the ultra-long structure were established.Finally,the temperature stress diagram for the most unfavorable temperature conditions was obtained.The calculation results show that the calculation model of temperature effect of the ultra-long underground structure given in this paper can play a guiding role in the design of the construction drawings.

关 键 词：温度应力 超长结构 SAP2000 

分 类 号：TU375[建筑科学—结构工程]