新型波形钢腹板组合箱梁桥横隔板间距研究  

Research on Diaphragm Spacing for New Type of Composite Box Girder Bridge with Corrugated Steel Webs

作　　者：喻文杰 高子健 邓文琴 刘朵 张建东 YU Wenjie;GAO Zijian;DENG Wenqin;LIU Duo;ZHANG Jiandong(Zhejiang Tunnel and Bridge with Corrugated Steel Webs Co.,Ltd.,Hangzhou 311200,China;JSTI Group Co.,Ltd.,Nanjing 211112,China;College of Civil Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]浙江中隧桥波形钢腹板有限公司,杭州311200 [2]苏交科集团股份有限公司,南京211112 [3]南京工业大学土木工程学院,南京211816

出　　处：《现代交通技术》2021年第4期37-41,共5页Modern Transportation Technology

基　　金：江苏省自然科学基金青年基金项目(BK20190681、BK20180151);江苏省高等学校自然科学研究面上项目(19KJB580002);江苏省交通运输厅科技与成果转化项目(2019Y19)。

摘　　要：为有效控制新型波形钢腹板钢底板混凝土顶板组合箱梁畸变和翘曲效应,利用有限元模型分析横隔板形式和数量对偏心荷载作用下新型组合梁截面畸变性能的影响,并基于参数研究腹板厚高比和截面厚宽比与横隔板间距的关系。结果表明:横隔板可有效增强新型波形钢腹板组合箱梁抗畸变性能,但对控制截面扭转变形作用较差;腹板厚高比和截面厚宽比对组合梁截面畸变效应影响较大,综合考虑腹板厚高比和截面厚宽比的影响,拟合出新型波形钢腹板组合箱梁桥横隔板合理间距经验公式,所提出的经验公式计算结果与有限元结果吻合较好,可为该类组合桥梁横隔板设计提供理论支撑。In order to effectively control the distortion and warping effects of the new type of composite box girder bridge with corrugated steel webs,steel bottom slab and concrete top slab,the influence of the form and number of diaphragms on the cross-sectional distortion performance of the new type composite girder under eccentric load is analyzed using a finite element model.Based on parameter analysis,the relationship between thickness-to-height ratio of the corrugated steel webs,thickness-to-width ratio of the cross-section and diaphragm spacing is studied.The results show that the transverse diaphragm can effec-tively enhance the anti-distortion performance of the new type of composite box girder bridge with corrugated steel webs,but has a poor effect on controlling the torsional deformation of the section.The thickness-to-height ratio of the corrugated steel webs and the thickness-to-width ratio of the cross-section have a greater influence on the distortion effect of the composite cross-section.Considering the influence of thickness-to-height ratio of the corrugated steel webs and the thickness-to-width ra-tio of the cross-section,an empirical formula for the reasonable diaphragm spacing of the new type of composite box girder bridge with corrugated steel webs is fitted.The calculation results of the empirical formula proposed in this paper are in good agreement with the finite element results and can provide theoretical support for the design of the diaphragm of this type of composite bridge.

关 键 词：新型组合箱梁 波形钢腹板 横隔板间距 有限元模型 经验公式 

分 类 号：U441[建筑科学—桥梁与隧道工程]