不同钢桥面板体系的受力性能分析  

Force Performance Analysis of Different Steel Bridge Deck Systems

作　　者：曲宛桐 Qu Wantong(Guangdong Communication Planning&Design Institute Co.,Ltd.,Guangzhou 510440,China)

机构地区：[1]广东省交通规划设计研究院集团股份有限公司,广东广州510440

出　　处：《市政技术》2025年第3期46-51,296,共7页Journal of Municipal Technology

基　　金：广东省住房和城乡建设厅2021年科技创新计划项目(2021-K4-343532)。

摘　　要：以某斜拉桥工程为依托,对几种不同构造的正交异性钢桥面板进行了局部静力性能分析。研究结果表明:使用UHPC刚性铺装层后,钢桥面板的挠度和应力均大幅降低;与常规U肋的钢-UHPC组合桥面板相比,UHPC层在大U肋的钢-UHPC组合桥面板中能发挥更大的组合作用。基于热点应力法,对4种桥面板方案的6个典型疲劳细节进行了疲劳验算。验算结果表明:2种UHPC组合桥面板的6个疲劳细节的应力幅值均处于较低水平,具有良好的抗疲劳性能;从减少焊缝总长的角度考虑,使用大U肋的钢-UHPC组合桥面板具有明显优势。Based on a cable-stayed bridge project,local static performance of several orthotropic steel bridge deck systems with different structures were analyzed.The research results show that rigid pavement layer with UHPC can significantly reduce the deflection and stress of the bridge deck;Compared with conventional U-ribbed steel-UHPC composite bridge decks,UHPC layer can exert a greater combination effect on the steel-UHPC composite bridge decks with large U-ribbed.The fatigue calculations were conducted on six typical fatigue details of four bridge deck schemes by the hot spot stress method.The calculation results show that the steel-UHPC composite bridge decks’stress amplitudes of the six fatigue details were all at a low level with good fatigue resistance performance;From the perspective of reducing the total length of welds,steel-UHPC composite bridge decks with large longitudinal ribs has significant advantages.

关 键 词：钢桥面板 受力性能 UHPC 静力和疲劳性能 有限元计算 

分 类 号：U443.33[建筑科学—桥梁与隧道工程]