基于二阶效应的排架柱计算长度研究  

THE EFFECTIVE LENGTH OF BENT-COLUMNS BASED ON SECOND-ORDER EFFECTS

作　　者：刘毅[1] 朱占友 魏巍[1] 白绍良[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]西南电力设计院,成都610021

出　　处：《工程力学》2008年第4期146-151,共6页Engineering Mechanics

基　　金：国家自然科学基金项目(59678035)

摘　　要：传统η-l0法是钢筋混凝土排架柱考虑二阶效应的主要设计方法,排架柱计算长度l0取值的合理性是决定该方法准确程度的关键。该文通过分析指出了排架柱计算长度的理论根据——初参数法中存在的不足,并在改进初参数法的基础上提出了排架柱计算长度合理取值。The conventional η-l0 method is the major structural design method considering second-order effects of reinforced concrete bent-columns, and its accuracy mostly depends on the rationality of effective length l0. The disadvantage of the initial-parameter method deriving the effective length l0 of bent-columns in Chinese Standard is pointed out, and according to the improved initial-parameter method, a more rational effective length l0 of bent-columns is suggested in the paper.

关 键 词：钢筋混凝土 排架柱 初参数法 计算长度 η-l0法 

分 类 号：TU318[建筑科学—结构工程] TU375