矩形截面框架柱双向受剪承载力公式可靠性指标  

Reliability index of formula for bilateral shear strength of rectangular frame column

作　　者：董春敏[1] 连瑾 

机构地区：[1]河南理工大学土木工程学院,河南焦作454000 [2]焦作工贸职业学院建筑艺术系,河南焦作454550

出　　处：《陕西理工学院学报（自然科学版）》2012年第3期37-41,共5页Journal of Shananxi University of Technology:Natural Science Edition

基　　金：河南理工大学博士基金项目(B2008-7)

摘　　要：利用JC法对66根矩形截面钢筋混凝土框架柱双向受剪承载力进行统计分析,确定《混凝土结构设计规范》(GB50010-2010)(规范)计算矩形截面框架柱双向受剪承载力公式的可靠性指标β。然后,将规范公式计算的可靠性指标与三折线法和最小体积用钢量法计算的可靠性指标进行比较。结果表明,规范公式计算的可靠性指标β值大于3.7,满足要求。而且,与其他两种方法相比,规范公式所对应的β值更大,说明采用规范公式计算矩形截面框架柱双向受剪承载力时,具有更好的可靠性。To determine the reliability index/~ of formula in the Code for Design of Concrete Struc- ture （GB50010-2010）（CODE）, JC was used to calculate bilateral shear strength of reinforced concrete frame column with rectangular section in design, the bilateral shear strengths of 66 rectangular frame col- umns were statistically analyzed by JC method. Then, the reliability index got from CODE formula was compared with those acquired by the method of three polygonal line and minimum stirrups, respectively. The comparison results showed that the reliability index obtained form CODE formula was greater than 3.7, which agreed with the requirement of target reliability index. Moreover, the results also suggested that the reliability index gained from CODE formula was greater than those obtained by the other two methods, and the formula for bilateral shear strength of rectangular frame column in CODE had a better reliability.

关 键 词：矩形截面框架柱 双向受剪承载力 JC法 可靠指标 

分 类 号：TU312.1[建筑科学—结构工程]