温度诱导缝对超长结构温度应力的影响研究

Research on the influence of temperature induced seam on the temperature stress of super-long structure

为研究设置温度诱导缝在解决超长结构温度应力问题方面的作用和效果,以某科技文化中心项目为例,采用MIDAS Gen和ABAQUS就地下室顶板进行建模分析,探讨了四种不同类型温度诱导缝的效果。结果表明:设置温度诱导缝可以较好地释放温度应力;综合考虑结构布置的便利和设置温度诱导缝的效果,选用不增设柱跨、不断开主梁的凹槽型温度诱导缝较为合理;可以通过加强温度诱导缝所在跨主梁的配筋来解决主梁不断开的问题。

In order to study the role and effect of setting temperature induced seam in solving the temperature stress problem of super-long structure, a scientific and technological cultural center project was used as an example, and MIDAS Gen and ABAQUS were used to model and analyze the basement roof, and the effects of four different types of temperature induced seams were discussed. The results show that temperature induced seam can release temperature stress well. Considering the convenience of structural layout and the effect of setting temperature induced seam, it is more reasonable to select the groove temperature induced seam without adding column span and opening main girder continuously. The problem of continuous opening of the main girder can be solved by strengthening the reinforcement of the cross main girder where the temperature induced seam is located.