混凝土温度特性参数反分析及其应用  

Back Analysis of Thermal Characteristics Parameters of Concrete and Its Application

作　　者：黎军[1] 朱岳明[2] 何光宇[3] 

机构地区：[1]江苏省交通规划设计院,江苏南京210005 [2]河海大学水利水电工程学院,江苏南京210098 [3]南京水利科学研究院,江苏南京210029

出　　处：《红水河》2003年第2期33-36,41,共5页Hongshui River

摘　　要：建立混凝土温度场材料特性参数反演分析模型,并用有限单元法仿真计算和可变容差法编制了优化反演程序。数值算例表明该算法是稳定的,收敛速度较快,并给出具体的在建工程实例的应用情况。通过现场温度观测值,进行优化反演计算得到混凝土温度的有关特性参数,这将成为部分或全部替代仅靠实验室选取参数的行之有效的途径之一。A back analysis model is established for analyzing the thermal characteristics parameters of concrete, and an optimized back analysis process is programmed by using FEM simulative calculation and fixable tolerance method. Numerical examples shows the reliability of the calculation method, and it indicates a relatively rapid convergence. A project example is given in the paper for illustration. The obtaining of thermal characteristics parameter of concrete by optimized back calculation on the basis of site temperature observation values will become one of the effective way to partially or totally replace the parameters obtaining only from laboratory experiments.

关 键 词：混凝土 温度场 反演分析 有限元 可变容差法 

分 类 号：TV33[水利工程—水工结构工程] TV315