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超长混凝土框架结构,往往由于建筑、设备要求,对超长结构要求不设缝,其温度变化、混凝土收缩产生的应力不容忽视,通过PMSAP、ANSYS两种有限元分析程序计算,结果基本相近,变化趋势完全相同。这就必须通过减小收缩量,降低当量温差;设置保温隔热层,降低温差;墙体柔性连接等措施来减小温度应力的影响,同时也可通过增加普通钢筋或设置预应力钢筋来抵抗附加应力的作用。
Due to the requirements of construction and equipment, the long-span concrete frame structure often has no requirement for the long-length structure. The stress caused by the temperature change and shrinkage of concrete can not be neglected. The results are basically similar by the two finite element analysis programs PMSAP and ANSYS, The trend is exactly the same. This must be reduced shrinkage, reduce the equivalent temperature difference; set the insulation layer, reduce the temperature difference; wall flexible connections and other measures to reduce the impact of temperature stress, but also by adding ordinary steel or set the prestressed steel to resist The role of additional stress.