超大跨自锚式悬索桥吊索索力变化规律分析  

Analysis of the Cable Force Variation Law of Self-anchored Suspension Bridge of Large Span

作　　者：王桢[1] 王志民[1] 吴海军[2,3] 周志祥[2,3] 

机构地区：[1]中交第一公路勘察设计研究院有限公司,西安市710075 [2]重庆交通大学土木建筑学院,重庆市400074 [3]山区桥梁与隧道工程国家重点实验室培育基地,重庆市400074

出　　处：《公路》2014年第3期68-73,共6页Highway

基　　金：交通运输部联合科技攻关项目;项目编号2010-353-341-230

摘　　要：结合桃花峪黄河大桥主桥1/30比例的全桥模型试验,建立试验桥梁有限元模型和实际桥梁有限元模型,并针对超大跨自锚式悬索桥在施工中关键吊索的索力变化规律进行了相关研究,阐明了边跨吊索和中跨吊索的索力变化特征,揭示了成桥吊索索力的主要来源,说明了结构体系转换对吊索索力变化的影响,验证了全桥模型试验的准确性和合理性,以便为今后国内外同类桥梁的设计和施工提供可借鉴的结论。Combining with the 1/30 scale full-bridge model test of the Taohuayu Yellow River Bridge, establishing the test bridge finite element model and real bridge finite element model, the relevant research of the cable forces variation of the key cables for large span suspension bridges in the construction is carried out to clarify the cable force variation of the side and middle span slings, reveals the main source of bridge cable force, explains the influence of structure system transformation on the cable force change, verify the accuracy and rationality of the model test of the whole bridge, in order to provide reference for the future design and construction of the similar domestic and foreign bridge projects.

关 键 词：超大跨径 自锚式悬索桥 吊索索力 全桥模型试验 规律分析 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]