框架柱计算长度系数法和二阶分析设计法的比较  

COMPARISON BETWEEN EFFECTIVE LENGTH APPROACH AND SECOND-ORDER ANALYS IS DESIGN APPROACH OF COLUMN IN FRAME

作　　者：童根树[1] 金阳[1] 

机构地区：[1]浙江大学土木系,杭州310027

出　　处：《钢结构》2005年第2期8-11,40,共5页Steel Construction

摘　　要：对框架柱的计算长度系数法和二阶分析设计法详细列出设计公式进行了比较,详细解释了内力采用二阶分析时计算长度系数取110的原因。通过算例分析,对两种分析设计方法进行了定量比较。对框架的比较表明,纯框架如果采用二阶分析方法设计,无需计算稳定性。A detailed comparison bet ween effective length approach and second order analysis design appro ach of column in frame is carried out by listing respective formulas ,and the reason why effective leng th factor is taken as 1 0 when sec ond order analysis is adopted is c learly explained Then two examples are presented to illuminate the qu antitative difference between the two design approaches of column in frame and indicate that the in pla ne stability of unbraced frame nee d not be evaluated if second order analysis design approach is used

关 键 词：分析设计法 系数法 框架柱 计算长度系数 二阶分析 计算稳定性 设计公式 算例分析 定量比较 设计方法 内力 

分 类 号：TU391[建筑科学—结构工程]