中等跨径公路钢箱梁桥结构内力分析  

ANALYSIS OF STRUCTURAL INTERNAL FORCE OF MEDIUM-SPAN HIGHWAY STEEL BOX BRIDGE

作　　者：赵剑丽[1] 

机构地区：[1]浙江交通职业技术学院路桥学院,杭州311112

出　　处：《钢结构》2016年第11期9-14,共6页Steel Construction

基　　金：交通运输部应用基础项目(2015319G01170);浙江省交通运输厅科技项目(2015-2-16)

摘　　要：钢箱梁桥已广泛应用于公路中等跨径桥梁中,对中等跨径公路钢箱梁桥的合理构造进行研究,有利于推动钢桥的标准化建造。通过对代表性桥宽和典型主梁间距进行探讨,重点分析典型主梁布置和桥宽下,单根主梁的弯矩和剪力、恒载和活载比例等参数与主梁跨径的关系。研究表明,单梁设计内力主要决定于主梁间距和跨径,而与桥宽关系不大;单向行驶的弯矩、剪力值可作为主梁的设计代表值。The steel box bridge has been widely used in medium-span highway bridges. The researches on rational structure of medium-span steel box bridge are helpful to promote the standardization production of steel bridges. The representative bridge width and typical main beam spacing were determined,then the ratio of moment and shear,designed value and influencing parameters were analyzed in detail with certain beam arrangement and bridge width. The research showed that the design force of single beam was mainly determined by spacing and span of main beams,and have little relationships to wide of bridge. And one way traffic moment and shear values could be used as design representative value of main beams.

关 键 词：中等跨径钢箱梁桥 主梁受力性能 合理构造 标准化建造 

分 类 号：U441[建筑科学—桥梁与隧道工程] U448.213[交通运输工程—道路与铁道工程]