20m预应力混凝土简支空心板桥的结构校验系数统计分析  

Analysis of Structure Testing Coefficient of 20 m Prestressed Concrete Simple Hollow Slab Bridge

作　　者：夏超[1] 黄福伟[2] 张晓东[2] 杨胜 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]招商局重庆交通科研设计院有限公司,重庆400067 [3]重庆市智翔铺道技术工程有限公司,重庆400074

出　　处：《西南科技大学学报》2013年第4期1-3,70,共4页Journal of Southwest University of Science and Technology

基　　金：国家重点基础研究发展计划(973计划)(2012CB723807)

摘　　要：分别采用基于四分位法和基于平均值95％的置信区间的方法，对28座20m预应力简支空心板桥竣工静载试验实测应变校验系数和挠度校验系数进行数据分析，得到如下主要结论：应变及挠度的校验系数基本服从正态分布；基于四分位法的结果与相关规范更加吻合。基于四分位法的检验系数分析结果是：在4车正载时的挠度和应变校验系数分别为0．49—0．70，0．47－0．70；在4车偏载时的挠度和应变校验系数分别为0．45～0．69，0．46～0．70。This thesis analyzed the measured strain testing coefficient and deflection testing coefficient of 28 m prestressed simply supported hollow slab bridges of 20 m through the methods based on quartiles and average 95% confidence interval respectively. The major findings are as follows： strain testing coefficient and deflection testing coefficient roughly obey normal distribution; the result based on quartiles is consistent with relevant specification. The major analysis result based on quartiles is as follows ： when four trucks are upright loading, the deflection test coefficient and strain testing coefficient ranges are respectively 0.49 - 0.70 ; when four trucks are offset loading, they are respectively 0.45 - 0.69 and 0.46 - 0.70.

关 键 词：20m预应力简支空心板桥 荷载试验 校验系数 四分位法 

分 类 号：U446[建筑科学—桥梁与隧道工程] U448.217[交通运输工程—道路与铁道工程]