摘要
基于《公路工程结构可靠度设计统一标准》(GB/T 50283-1999)(以下简称《公路统一标准》),以试验数据为基础,采用一次二阶矩法(JC法),对《钢结构设计规范》(GB 50017-2003)中栓钉连接件抗剪承载力计算公式进行了可靠度分析.结果表明,规范公式能满足《公路统一标准》的可靠指标要求,但明显偏于保守.继而对栓钉连接件抗剪承载力计算公式进行可靠度校准,得到了混凝土破坏和栓钉破坏2种破坏形态的抗力分项系数,提出了栓钉连接件抗剪承载力的修正公式.可靠度分析表明:修正公式的可靠指标得到了有效减小,并能满足《公路统一标准》的可靠指标要求;相比较规范公式,混凝土破坏和栓钉破坏时承载力分别提高了4.7%和10.0%.
According to the Unified Standard for Reliability Design of Highway Engineering Structures( GB/T50283-1999),The reliability analysis of design formula( GB 50017-2003) for shear capacity of stud connectors was carried out with first-order second-moment method( JC method) based on test results. The analytical results indicate that the current design formula can meet the requirement of reliability index specified in GB/T 50283,but it’s obviously too conservative. The reliability calibration analysis of design formula for shear capacity of stud connectors is then performed,the partial safety factors for resistance for two failure modes are obtained and a modified formula is put forward. The reliability analysis shows that the reliability index of the modified formula is effectively reduced and satisfy the standard requirements given in GB/T 50283. The shear strength of stud connectors corresponding to concrete failure and stud failure increase 4. 7% and 10. 0%respectively in comparison with the results calculated by formula in design code.
作者
石卫华
陈礼科
陈堤
Shi Weihua;Chen Like;Chen Di(School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2019年第1期28-35,共8页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
国家自然科学基金资助项目(51678234)
湖南省自然科学基金资助项目(2015JJ2069)
湖南省高校创新平台开放基金资助项目(14K036)
关键词
栓钉连接件
抗剪承载力
可靠度
抗力分项系数
stud connectors
shear capacity
reliability
resistance partial coefficients
