热膨胀系数时变性对混凝土温度应力仿真影响

卢春鹏,刘杏红,赵志方,马刚,金瑞鑫,常晓林

Effect of time-varying thermal expansion coefficient on thermal stress simulation of concrete

Chun-peng LU,Xing-hong LIU,Zhi-fang ZHAO,Gang MA,Rui-xin JIN,Xiao-lin CHANG

表 2 混凝土不同等效龄期下热膨胀系数

Tab.2 Thermal expansion coefficient of concrete at different equivalent ages μm·℃−1

te/h 计算值 拟合值 te/h 计算值 拟合值 7.5 34.7 31.6 25.5 5.6 7.1 8.5 21.9 22.0 78.5 6.4 6.1 9.5 15.4 16.2 130.5 7.2 6.1 10.5 10.8 15.6 180.5 8.3 6.1 12.5 9.7 12.3 204.5 7.0 6.1 14.5 7.6 10.4 228.5 5.3 6.1 18.5 4.6 8.4 − − −