济南黄河三桥索塔锚固区水平受力性能模型试验研究  

Model Test Study of Horizontal Load-Bearing Behavior of Anchorage Zone in Cable Pylon of the 3rd Ji'nan Huanghe River Bridge

作　　者：苏庆田[1] 翟慧娜[1] 吴冲[1] 

机构地区：[1]同济大学桥梁工程系,上海200092

出　　处：《桥梁建设》2008年第3期12-14,26,共4页Bridge Construction

基　　金：国家自然科学基金资助项目(50708075);国家863项目(2007AA11Z105)

摘　　要：济南黄河三桥索塔锚固区采用混凝土与钢锚箱组合的结构形式,最大斜拉索索力达到6400 kN,结构构造复杂,在强大索力作用下结构的受力性能值得关注。通过该索塔锚固区水平受力性能节段模型试验,得到了锚固区构件的应力分布和塔壁混凝土的裂缝开展情况。试验结果表明该索塔锚固区在设计索力作用下水平向受力是安全的。The composite structure of concrete and steel anchor box is adopted for the anchorage zone in cable pylon of the 3rd Ji＇nan Huanghe River Bridge and the greatest stay cable force in the structure in the zone can reach 6 400 kN. The configuration of the composite structure is complicated and therefore the mechanical behavior of the structure under the action of strong stay cable force deserves proper concern. In this paper, the stress distribution of elements in the an chorage zone and the through the sectional the test conclude that development of cracks in the concrete model test of horizontal load-bearing beh the horizontal load-bearing behavior of th of the pylon walls are obtained avior of the zone. The results of e zone of the Bridge under the action of the designed stay cable force is safe.

关 键 词：斜拉桥 索塔锚固区 模型试验 

分 类 号：U443.38[建筑科学—桥梁与隧道工程] U446[交通运输工程—道路与铁道工程]