三峡电站厂房尾水管温度应力仿真计算分析

Analog Computations and Analysis of Temperature Stress of Powerhouse Draft Tube of Three Gorges Project

采用有限元法，对三峡水利枢纽电站厂房尾水管弯管段和扩散段两个典型断面，取不同的浇筑季节（冬、秋、夏三季）、不同骨料（人工和天然）的混凝土，进行了模拟施工过程的温度场及温度应力仿真计算分析。

In this paper ,the analog computation of concrete’s temperature fields and temperature stress of the powerhouse draft tube of TGP was made.In oder to simulate the placement processes ,the FEMwas used ,for a selected bend section and a divergent section that are typical sections , in threeplacement seasons ,i.e. , winter ,autumn and summer , and with two kinds of aggregates,1.e.,artificial and natural.The computation results and analysis of all the cases for implementing full-faceplacement of ceiling are introduced.