【摘要】 根据曹娥江大闸施工现场实测的温度值,利用遗传算法对大闸混凝土温度场进行反演计算,并将计算值和实测值进行对比,分析计算结果的合理性,得到反映混凝土热学性能的参数.通过这些参数,利用三维有限元仿真计算程序对施工现场混凝土温度场进行反馈计算,确定温控防裂措施,指导后续闸墩施工.反演结果表明,遗传算法作为一种优化算法,具有收敛速度快、效果好等特点.图7,表1,参11.更多还原

【Abstract】 According to the measured temperature of concrete of Caoejiang sluice during construction period,the genetic algorithms was carry out the back analysis of parameters of concrete thermal field,the calculation temperature was compared with the measured temperature and the reasonable of result for the parameters of concrete was analysied. Using these parameters, the feedback study of concrete temperature during construction was carried out by the 3-D FEM, and then the methods of temperature control and crack prevention were accepted to direct the following construction. As one kind of optimization methods, the genetic algorithms are simple and universal. The result shows that the genetic algorithm is high efficiency. 7figs.,1tab.,8refs.更多还原