超大面积和超长结构温度应力的有限元分析

Analysis of the finite element method of temperature strain for surpass large area and extra-long structure

结构中的温度应力是造成混凝土开裂的主要因素之一,尤其是对于超大面积和超长的混凝土结构工程。因此在工程结构设计时,须要考虑温度应力对混凝土结构的影响。本文基于ANSYS有限元分析软件的特点和温度应力的基本特性,对动物研究中心大楼框架结构进行温度应力分析;在屋(楼)面板超大、框架梁超长的情况下,就室外环境温度与室内恒温产生的温度场对混凝土框架结构内力和变形的影响进行分析,并给出了框架结构梁板温度应力值及位置,为工程结构设计提供理论依据。

The temperature stress of the structure is one of the main factors caused concrete cracking,especially for the large area and ultra-long concrete structures.Therefore,when designing engineering structures,it needs to consider the adverse effect caused by temperature stress on the concrete structure.This paper based on characteristics of the finite element analysis software ANSYS and the temperature stress,analyzed temperature stress on the framework structure of Animal Research Center building;Under the condition of large roof（floor） panel and ultra-long frame beam,analyzed the impact on internal force and deformation of concrete frame structure caused by the temperature field generated from outdoor ambient temperature to indoor constant temperature,and gave out the temperature stress value and its location of the beam frame structure,provided a theoretical basis for engineering structure design.