大跨加劲弦钢桁梁桥减小桥面系共同作用技术措施研究  

STUDY ON TECHNIQUES FOR DECREASING DECK SYSTEM INTERACTION OF LONG SPAN STEEL STIFFENING TRUSS BRIDGE

作　　者：郑凯锋[1] 吴臻旺[1] 文曙东[1] 

机构地区：[1]西南交通大学,成都610031

出　　处：《钢结构》2007年第4期44-47,共4页Steel Construction

摘　　要：对跨度为(112+208+112)m宽幅加劲弦钢桁架梁桥的桥面系参与主桁架共同作用引起的横梁水平弯曲这一突出问题进行详细地分析,按照把纵梁和平纵联施工分为:随施工顺序同步连接、桥面板放置前连接和分段滞后连接等3种不同的方案,分别计算横梁水平弯曲应力和组合应力,并对计算结果进行比较,由此得出结论:纵梁和平纵联分段滞后连接方案为相对可行的施工方案。For a wide-deck steel stiffening truss bridge with spans of(112+208+112) m,horizontal bend of transverse beam produced by the deck system and main truss interaction is a special question that must be analyzed in detail.The paper analyzes this special subject according to three different construction methods that include connecting longitudinal beams and longitudinal bracings at the same time of main truss construction,connecting before the deck slabs construction and connecting at different stages after dec...

关 键 词：钢桁架梁桥 桥面系 共同作用 

分 类 号：U443.31[建筑科学—桥梁与隧道工程]