采用正交试验法的波纹钢箱形结构截面尺寸敏感性分析  

Sensitivity Analysis of Section Size of Corrugated Steel Box Structure by Orthogonal Test Method

作　　者：孙海波 孙伟明 刘保东[2] 武亦彬 张广荣 SUN Hai-bo;SUN Wei-ming;LIU Bao-dong;WU Yi-bin;ZHANG Guang-rong(Shandong Transportation Planning and Design Institute Group Co.Ltd.,Jinan 250031,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;China Railway Bridge and Tunnel Technology Co.Ltd.,Nanjing 210061,China;Hengshui Yitong Pipe Co.Ltd.,Hengshui 053000,China)

机构地区：[1]山东省交通规划设计院集团有限公司,济南市250031 [2]北京交通大学土木与建筑工程学院,北京市100044 [3]中铁桥隧技术有限公司,南京市210061 [4]衡水益通管业股份有限公司,衡水市053000

出　　处：《公路》2023年第5期86-93,共8页Highway

基　　金：山东省交通规划设计院集团有限公司项目,项目编号KJ-2020-07。

摘　　要：波纹钢箱形结构在荷载作用下的内力以弯矩为主,不符合传统管拱形波纹钢桥涵所依据的环向压力理论,需要考虑弯矩影响。目前该类截面尺寸参数对结构的响应影响水平研究不够深入,截面尺寸参数拟定往往依据经验确定。依据跨径为6.74 m的波纹钢箱形模型试验的结构尺寸参数建立数值模型,采用正交试验法,以结构的弯矩和变形为试验指标,进行跨度、矢高、拱肩半径、起拱高度和截面刚度关于试验指标的敏感性分析。研究表明,跨度和起拱高度对结构的弯矩和变形影响最为明显,截面刚度次之,矢高和拱肩半径对结构影响最小。The internal force of corrugated steel box structure under load is mainly bending moment,which does not accord with the circumferential pressure theory based on the traditional pipe arch corrugated steel bridge culvert,so the influence of bending moment should be considered.At present,the research on the influence level of such section size parameters on structure response is not thorough enough,and the formulation of section size parameters is often determined by experience.In this paper,a numerical model is established based on the structural dimension parameters of the box model test of corrugated steel with the span of 6.74 m.The sensitivity of span,vector height,arch shoulder radius,arch height and section stiffness to the test indexes is analyzed by using orthogonal test method and taking the bending moment and deformation of the structure as the test indexes.The results show that the span and arch height have the most obvious influence on the bending moment and deformation of the structure,followed by the section stiffness,and the height of the arch and the radius of the arch shoulder have the least influence on the structure.

关 键 词：波纹钢箱涵 截面尺寸 正交试验 敏感性分析 

分 类 号：U441.5[建筑科学—桥梁与隧道工程] U449.831[交通运输工程—道路与铁道工程]