基础刚度对超长混凝土结构温度应力的影响研究

摘要

The influence of foundation stiffness on temperature stress of super-long concrete structure is studied, combined with practical engineering project, the analysis of a super-long concrete structure in Suzhou on temperature stress is carried out by ABAQUS software. The results show that, analysis results is comprised with assumed model of block structure, temperature stress in floor plant after considering foundation stiffness is obviously decreased, the moment for the bottom of column base is also clearly decreased, which is close to reality and beneficial to control the temperature effect. At the same time, the measures which can effectively reduce the impact of temperature stress are provided.%为研究基础刚度对超长混凝土结构温度应力的影响，结合实际工程，运用ABAQUS有限元软件，对苏州某超长混凝土结构的温度效应进行了分析。分析表明，与柱底嵌固假定模型的分析结果相比，考虑基础刚度后，楼层板中温度应力明显降低，底层柱底弯矩明显降低，分析结果更加接近实际，且有利于温度效应的控制；同时提出了有效减小温度应力影响的措施。