摘要
根据铁道部有关单位调查统计参数,本文按分位值法对既有铁路混凝土桥梁标准设计进行可靠指标的检算,普通钢筋混凝土梁β=5.47～6.10,预应力混凝土梁β=8.10～9.41。并根据试算法求得荷载分项系数、综合抗力分项系数及材料设计强度,供《铁路桥规》改革参考。
Based on the statistical parameters obtained by the investigation of the units concerned in Railway Ministry,the reliability indexes of standard railway brigde beams are examined in fractile method in this paper,with the result that reliability indexes of RC beams β=8.48～6.10 and those of PC beams β=8.10～9.41.Moreover, the load sub-coefficients,the synthetical resistant sub-cofficients and the design strength of materials are acquired by trial and error method for reference in revising“Railway Bridge Design Code”
出处
《长沙铁道学院学报》
CSCD
1991年第3期111-120,共10页
Journal of Changsha Railway University
关键词
混凝土桥
强度
可靠性
铁路桥
reliability index
characteristic parameter
fractile method
