摘要
结合我国已有作用统计参数,考虑极限状态法和容许应力法安全度设置水平的一致性,利用设计值法对铁路桥梁结构恒载和列车荷载作用分项系数进行计算和分析。研究建议：铁路工程结构恒载分项系数取1.1,当永久荷载作用为有利情况时,恒载分项系数取1.0;列车荷载作用分项系数宜取1.4~1.5。研究成果已纳入《铁路工程结构可靠性设计统一标准（试行）》,并为其他铁路工程结构荷载分项系数的制定提供方法和参考。
Considering the consistency of safety level between limit state design method and allowable stresses method, partial factors of dead load and train load for railway bridge structure were computed and studied by using design value method and original statistical parameters. It could be observed from analysis results that partial factors for dead load should be 1.1 where unfavorable and 1.0 where favorable. Partial factors for train load were derived between 1.4 and 1.5. Research results had been accepted by Unified Standard for Reliability Design of Railway Engineering Structures （trial）, which could also provide methods to the determination of partial factors for other railway engineering structures.
出处
《钢结构》
北大核心
2015年第3期21-24,17,共5页
Steel Construction
基金
中国铁路总公司科技研究开发计划项目资助(Z2012-065)
关键词
铁路桥梁结构
作用分项系数
设计值法
概率分布
灵敏度系数
railway bridge structures
partial factor for actions
design value method
probability distribution
sensitivity factor
