宽幅钢桁梁桥面系参与主桁共同作用效应研究  

Research on Interaction Effects of Deck System Involved in the Main Truss of Wide Steel Truss Bridge

作　　者：傅晨曦[1] 周青[1] 华新[1] 韩大章[1] 

机构地区：[1]江苏省交通规划设计院股份有限公司,江苏南京210005

出　　处：《现代交通技术》2015年第6期17-20,共4页Modern Transportation Technology

摘　　要：在设有纵横梁的钢桁梁桥面系结构中,混凝土板与纵、横梁形成组合截面,参与主桁整体结构受力。文章分别以主桁轴力、刚度为对象,分析钢桁梁桥面系参与主桁共同作用的程度。由于公路钢桁梁具有宽幅的显著特点,对5种不同桁宽的参数模型进行对比分析,研究桁宽变化对钢桁梁桥面系参与主桁共同作用效应的影响。In the steel truss bridge deck system with longitudinal and horizontal girders, a composite section formed by concrete slab and longitudinal and horizontal girders participates in the overall structure of the main truss. In this article, the axial force and stiffness of main truss are used to analyze the degree of participation in interaction of deck system and the main truss. Because the steel truss bridge in highway department has a notable feature of wide, the interaction effects of deck system involved in the main truss considering the wide variations are researched, comparing 5 parametric models with different truss width.

关 键 词：宽幅大跨 钢桁梁 桁宽变化 桥面系 共同作用 

分 类 号：U443.32[建筑科学—桥梁与隧道工程]