某超长地下室混凝土结构温度效应的数值分析

摘要

A practical project of over-length concrete structure basement in Guangzhou was analyzed in this research ,un-der the consideration of the elastic restraint to the over-length basement ,numerical analysis of temperature effect is car-ried out by using finite-element software ANSYS .The temperature stress and deformation distribution of the main compo-nent such as floors and walls were obtained .The area of stress concentration of the floors and the walls were revealed ac-cording to the results of numerical analysis .The crack control rules and current crack-preventing measures were also pro-posed based on the numerical analysis .%以广州地区某超长地下室混凝土结构为研究对象，以当地季节温差及混凝土收缩效应为综合温度作用，在考虑下部地基对超长地下室结构的弹性约束情况下，应用ANSYS有限元软件对该结构进行了温度效应影响下的数值模拟，得到了该结构的楼板及侧墙等主要构件的温度应力及变形分布情况，根据数值模拟结果给出了超长地下室结构楼板及侧墙除温度拉应力较大的应力集中区域，基于此分析结果提出了裂缝控制措施，对其他超长地下室混凝土结构的裂缝控制具有一定的参考价值。