并筋混凝土梁裂缝可靠度研究  

Reliability analysis for bundled bars in R.C. Beams based on crack width

作　　者：何敏[1] 刘庆文[1] 

机构地区：[1]南昌航空大学土木建筑学院,江西南昌330063

出　　处：《山西建筑》2017年第10期42-44,共3页Shanxi Architecture

基　　金：国家自然科学基金(50968013);江西省自然科学基金(20114BAB206013);南昌航空大学研究生创新专项资金项目(YC2015049)资助

摘　　要：将计算模式不确定性、荷载效应比、材料参数视为随机变量,采用验算点法,计算了并筋梁裂缝宽度可靠度,分析了并筋对钢筋混凝土梁裂缝可靠度的影响,分析结果表明:并筋梁的可靠度指标均大于普通钢筋混凝土梁的可靠度指标,并筋梁裂缝宽度的计算公式是合理的。The indetermination coefficient of calculation mode, load effect ratio and the material property will be treated as random variables in these paper, and the paper will give the reliability of bundled Bars in R. C. Beams based on crack width by AFOSM, analyzed the influence of the bundled bars on the reliability of crack width of reinforced concrete beams. The result show that the reliability index of bundled Bars in R. C. Beams is greater than the reliability index of the ordinary R. C. Beams, the formula for calculating the crack width of R. C. Beams with bundled Bars is reasonable.

关 键 词：并筋 裂缝宽度 可靠度 验算点法 

分 类 号：TU375[建筑科学—结构工程]