基于组合指数式绝热温升的泄洪洞衬砌混凝土温度场仿真分析  

An Emulation Analysis of Temperature Field for Lining Concrete of Spillway Tunnels Based on the Compound Exponential Formula

作　　者：谌东升[1] 黄耀英[1] 周宜红[1] 宫经伟[2] 唐腾飞[1] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002 [2]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《中国农村水利水电》2013年第6期124-127,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51079079);国家自然科学青年基金项目(51209124)

摘　　要：针对目前常用的双曲线式绝热温升与试验资料吻合得较好,但不便于数学运算,而组合指数式绝热温升既与试验资料吻合得较好,又便于数学运算,分别开发了双曲线式绝热温升和组合指数式绝热温升的水管冷却等效热传导法有限元仿真分析程序,结合西南某含有冷却水管的泄洪洞衬砌混凝土工程,将常用的双曲线绝热温升转化为组合指数式,然后进行温度场仿真分析对比。分析表明,两种方法仿真计算的典型时刻的代表节点温度和中间断面温度场的吻合情况均令人满意,但相对双曲线式绝热温升的水管冷却等效热传导法,组合指数式绝热温升的水管冷却等效热传导法公式简洁,便于程序实现,且计算速度快。The hyperbolic formula, which is frequently used for adiabatic temperature rise, accords well with experiment results, but it is not good for mathematical operation, whereas, the compound exponential formula accord well with experimental results and as good for mathematical operation. The finite element emulation programs based on cooling pipe equivalent models of the hyperbolic formula and the compound exponential formula are developed in this paper. The hyperbolic formula for adiabatic temperature rise of a tunnel lining concrete engineering with cooling pipe in southwest China is converted to the compound exponential formula. Then, a comparative analysis is made of the temperature field simulation proceeded between the hyperbolic formula and the compound expo- nential formula. The analysis shows that the temperature of representative nodes and the temperature field of intermediate section based on the two simulation calculation methods coincides satisfactorily, but the finite element emulation programs is based on cool- ing pipe equivalent models of the compound exponential formula, which is easy to attain and has faster computing speed, is more con- cise than the hyperbolic formula.

关 键 词：绝热温升 等效热传导 组合指数 衬砌混凝土 

分 类 号：TV431[水利工程—水工结构工程]