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文章结合周口东来尚城二期桩筏基础大体积混凝土浇筑实例,利用有限元分析软件对其进行热力学和结构分析,模拟出混凝土浇筑过程的温度场和应力场瞬态变化情况以及混凝土浇筑完毕后的开裂和裂缝分布情况。研究表明,大体积混凝土浇筑过程中筏板的温度应力,呈现以桩为中心逐渐递减的趋势;节点温度也是呈中间高,四周低的变化趋势;位移变化呈现出以桩为中心逐渐递增的趋势,最大位移发生在两排桩约束力最小的中间部位或者筏板中间区域。
Based on the examples of piled raft foundation in Zhoukou Donglai Shangcheng Phase II, the thermodynamics and structure analysis of piled raft foundation are carried out by finite element analysis software to simulate the transient changes of temperature field and stress field of concrete pouring and the concrete pouring completed After the crack and crack distribution. The results show that the temperature stress of the raft in the process of pouring large-volume concrete is gradually decreasing with the pile as the center, and the temperature of the node is also middle high and low around. The displacement change shows a gradual increase with the pile as the center , The maximum displacement occurred in the middle part of the two piles with minimum binding force or in the middle area of the raft.