火电厂主厂房混凝土结构温变效应研究  

THE STUDY ON TEMPERATURE RESPONSE FOR CONCRETE MAIN WORKSHOP IN LARGE-SCALE HEAT-ENGINE PLANT

作　　者：代慧娟[1] 白国良[1] 孙鹏[1] 朱佳宁[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《工业建筑》2013年第1期32-37,共6页Industrial Construction

基　　金：国家自然科学基金面上项目(51178383)

摘　　要：火电厂主厂房作为超长"板式"混凝土结构,受温度作用的影响较大,已引起结构设计人员的高度重视。引入温度折减系数以考虑结构的松弛徐变,塑性发展,裂缝对构件、结构层刚度的折减,提出计算温差的取值方法。基于结构概率极限状态设计法及荷载(作用)组合原则,分析温度作用概率模型,给出超长混凝土框架结构温度作用组合系数的建议取值。最后,以某火电厂主厂房为算例,对其温度效应进行分析。As super-long ＂plate＂ concrete structure,the large-scale heat-engine plant is suffered temperature effect seriously.For this reason,it has attracted the attention of the structural designers.It was introduced temperature reduction factor to consider structure relaxation creep and plastic development,cracks of component,structure layer stiffness,and was put forward the temperature value calculation method.Base on the structure probability limit state design method and load combination principle,it was analysed the probability model of temperature effect,the recommended value of combination coefficients of temperature effect for over-long concrete frame structures was proposed.Finally,it was set a heat-engine plant concrete structure for example to analyze the temperature effects of the main workshop structure.

关 键 词：火电厂主厂房 混凝土结构 温度折减系数 计算温差 有限元分析 

分 类 号：TU375[建筑科学—结构工程]