公路桥梁车辆荷载与效应的统计分析  

Statistical Analysis of Vehicular Load and Loading Effect on Highway Bridge

作　　者：陈庆华[1] 张凌[2] CHEN Qinghua;ZHANG Ling(Fuzhou University of International Studies and Trade,Fuzhou,Fujian 350202,China;Longyan University,Longyan,Fujian 364000,China)

机构地区：[1]福州外语外贸学院,福建福州350202 [2]龙岩学院,福建龙岩364000

出　　处：《龙岩学院学报》2019年第2期19-24,共6页Journal of Longyan University

基　　金：福建省自然科学基金资助项目(2019J01671);中交路桥技术有限公司委托的横向课题"公路桥梁汽车荷载可靠性研究"(HAH01349)

摘　　要：研究公路桥梁汽车荷载与效应的统计性质。应用K-S检验法,拟合车辆荷载的载口分布;根据极值分布理论,计算设计使用寿命期的车辆荷载最大值分布;根据结构力学原理,计算简支梁的跨中弯矩效应分布与等效均布荷载分布;计算这些分布的期望、标准差、变异系数和分位值,它们都是桥梁结构可靠度设计的重要统计参数。The statistic characteristics of vehicular loads and loading effects on the highway bridge are investigated in the paper. The probability distributions of vehicular loads are fitted by K-S test. The probability distribution of the maximal value of vehicular loads in the useful life period is deduced by the theory of extreme value distributions. The loading effect and equivalent uniform load of mid-span moment in simple beam are calculated in the light of the principle of structural mechanics. The mathematical expectations, standard deviations, coefficients of variation and tantiles of these distributions are calculated and the statistical parameters are significant in the reliability design of bridge construction.

关 键 词：工程结构可靠性 载口分布 跨中弯矩效应 等效均布荷载 

分 类 号：TU311.2[建筑科学—结构工程]