铁路混凝土桥裂缝可靠性研究  

RELIABILITY RESEARCH ON CRACK OF CONCRETE RAILWAY BRIDGES

作　　者：吴迅[1] 

机构地区：[1]上海铁道大学

出　　处：《铁道学报》1996年第5期83-90,共8页Journal of the China Railway Society

基　　金：铁道部科研项目

摘　　要：通过ＲＣ和ＰＰＣ模型梁的静载和疲劳试验，确定了系数α１和α２。用一次二阶矩验算点法计算了ＴＢＪ２－８５［１］公式和本文建议公式对铁路ＲＣ和ＰＰＣ梁的可靠性指标β。The coefficients α 1 and α 2 have been determined through the crack tests of the RC and the PPC model beams under the static and repeated loading in this paper. The reliability indexes β of the crack formula of the current Railway Bridge Code TBJ2-85 and the crack formula proposed by this paper for the RC and the PPC beams in limit state condition for normal serviceability are calculated by the first order second moment method. The formula proposed by the paper is suitable for the checking computation of the beams designed on the current RC Standard Designs for Railway.

关 键 词：混凝土桥 裂缝 可靠性指标 铁路桥 设计 验算 

分 类 号：U448.132.5[建筑科学—桥梁与隧道工程]