摘要
混凝土边界传热过程的确定是混凝土温度场分析的关键,是研究混凝土结构温控防裂问题的重要方面之一。以标准遗传算法为基础,对该算法的缺陷提出相应的改进方法,并编制程序。在工程条件下,进行非绝热状态下的温度试验,获得实测温度数据。然后,利用改进遗传算法,对实测数据进行温度场的反演计算,并将计算值与实测值进行比较,分析反演结果的合理性,从而获得与工程条件相符的不同物盖条件下的混凝土边界热交换系数,以供类似工程参考。
As the important aspect of concrete structure＇s temperature control for anticracking, determination of the heat transfer pro cess in boundary of concrete structure is essential for calculation and analysis.Based on standard genetic algorithm, improving method for defects of this algorithm was proposed and a FORTRAN program was coded.With data collected from concrete nonadiabatic temperature test of actual project, temperature filed was inversed.The accuracy and rationality of the method and program were verified by comparing numerical results with the test results.As results of inversion heat transfer coefficients of different slipcover on concrete＇s surface, which more consistent with the actual situation, were obtained.
出处
《混凝土》
CAS
CSCD
北大核心
2013年第1期39-43,共5页
Concrete
基金
国家自然科学基金(51109081)
关键词
热交换系数
混凝土
温度试验
遗传算法
heat transfer coefficients
concrete
temperature test
genetic algorithm
