灰色系统理论在大跨斜拉桥合龙中的应用  

Application of Grey System Theory in Large Span Cable-stayed Bridge's Beam Closure

作　　者：王进军 张凯[2] 

机构地区：[1]中交二航局六公司,湖北武汉430014 [2]天津市市政工程设计研究院,天津300000

出　　处：《港工技术》2016年第1期56-58,共3页Port Engineering Technology

摘　　要：河口黄河大桥属于兰州(新城)至永靖沿黄河快速通道的重难点控制工程,主桥采用主跨360 m的结合梁斜拉桥。以河口黄河大桥为例,在-5℃的低温状态下,采用灰色系统理论对合龙时状态进行了分析,采用索力适当调整保证无应力长度不变的自然低温合龙方案,代替了传统顶推合强制合龙方案,节省了工期。该方法可供类似工程参考。The estuary Yellow River bridge belongs to key and difficult engineering along the Yellow River fast track from Lanzhou（new city） to Yongjing, and its main bridge adopts the bond beam cable-stayed bridge with the main span 360 m. Taking estuary Yellow River bridge as an example, under-5 low temperature condition, ℃grey system theory is used to analyze the closure error, and the cable force is used to appropriately adjust and ensure unstressed, natural and low temperature closure with constant length. This replaces the traditional pusher forced closure plan and saves the time for a project. This method can be used for reference in the similar projects.

关 键 词：结合梁 斜拉桥 灰色系统理论 强制合龙 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]