水电站厂房坝段温度场和热应力仿真研究  

Simulative study on temperature field and thermal stress of powerhouse dam section of hydropower station

作　　者：丁陆军[1,2] 张晓飞[3] 李守义[3] 张栋[3] 

机构地区：[1]四川大学水电学院,四川成都610065 [2]四川建筑职业技术学院,四川德阳618000 [3]西安理工大学水利水电学院,陕西西安710048

出　　处：《水利水电技术》2016年第10期6-9,共4页Water Resources and Hydropower Engineering

基　　金：国家自然科学基金项目(51479168);四川省科技计划项目(2015 JY0035)

摘　　要：本文模拟了水电站厂房混凝土施工过程,即考虑混凝土热力学参数随龄期的变化,采用三维有限单元法进行了温度场和热应力仿真计算研究。结果表明:若对低温季节浇筑的部位,采取自然入仓浇筑方式,高温季节浇筑的部位,采取控制浇筑温度和采用天然河水冷却的措施,最高温度和最大热应力均可满足规范要求。研究成果可为有关厂房坝段的设计、施工和温度控制提供参考。The construction process of the powerhouse dam section of a hydropower station is simulated herein, i.e. the simula- tative calculation on the temperature field and thermal stress is studied with 3 - D finite element method under the consideration of the change of the concrete thermal parameters along with its age. The result shows that if the natrural placement of concrete is a- dopted for the placing location in the cold season and the measures of controlling plaeeing temperature or cooling with the natural river water are appllied to the placing location in the hot season, both the maximum temerature and the maximum thermal stress can meet the requirements of the relevent specification. The study result can provide some references for the design, construction and temperature control of the powerhouse dam section concerned.

关 键 词：厂房坝段 温度场 热应力 三维有限元法 施工过程 

分 类 号：TV315[水利工程—水工结构工程]