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以扬州某商业广场酒店为背景,详细分析有限差分法求解大体积混凝土温度场原理。通过建立有限差分法求解大体积混凝土温度场的模型,对筏板基础大体积混凝土温度场问题进行求解。同时还从基础筏板大体积混凝土中掺入(WC)引气缓凝高效减水剂、大体积混凝土台阶式浇筑法以及“可呼吸方法”缓解底板约束等方面,对温控防裂施工技术措施进行研究,并将求解的温度场结果与实测结果对比,两者结果基本一致。
Taking the commercial square hotel in Yangzhou as the background, the principle of finite difference method to solve the temperature field of mass concrete is analyzed in detail. By solving the model of temperature field of mass concrete by establishing finite difference method, the temperature field of mass concrete in raft foundation is solved. At the same time, we also introduce temperature-controlled crack-prevention from the incorporation of (WC) air-entraining retarding superplasticizer into mass concrete of basic raft, step concrete pouring method of mass concrete, and “Respirable method” Construction techniques and measures, and the solution of the temperature field results and the measured results are compared, the two results are basically the same.