螺栓连接承弯承载能力可靠度分析  

Reliability Analysis of Bending and Bearing Capacity of Bolted Connections

作　　者：张新培[1] 杨毅[1] 田志鹏[1] 

机构地区：[1]四川大学建筑与环境学院,四川成都610065

出　　处：《四川大学学报（工程科学版）》2009年第5期70-74,102,共6页Journal of Sichuan University (Engineering Science Edition)

摘　　要：木结构螺栓连接可靠度水平的已有研究主要针对单根螺栓连接,而实际工程中螺栓连接均为多根螺栓构成,其可靠度水平的研究目前尚为空白。针对此问题,以中国木结构设计规范为基础建立了其承弯承载能力可靠度分析模型,采用可考虑随机变量相关影响的改进的JC法编写了相应分析程序。在大量的数值计算基础上,给出了螺栓连接承弯承载能力可靠度水平:ρrirj=1时,多根螺栓连接的可靠指标与单根螺栓连接的可靠指标相等,β总平均值为4.0023,变异系数为0.0968;rρirj=0时,多根螺栓连接的β总平均值为5.8681,变异系数为0.1230;rρirj在本文范围内线性改变时,多根螺栓连接的β总平均值为4.1594,变异系数为0.0893。可供修订中国木结构设计规范参考。So far,the reliability analysis of bolted connections fortimber structures was mainly aiming at the connection with a single bolt.However,all of the bolted connections in actual projects are composed with more than one bolt,which reliability analysis was few or none.For this issue,a new model of reliability analysis of bending and bearing capacity of bolted connections was proposed which was based on the code for design of timber structures in China.The corresponding analysis program was compiled,with apply...

关 键 词：木结构 螺栓连接 承弯承载能力 可靠度 改进的JC法 

分 类 号：TH131[机械工程—机械制造及自动化]