上海长江大桥基础工程承台水下封底混凝土施工技术  

Underwater bottom concrete construction technique for bearing platform in Shanghai Yangtze River bridge foundation engineering

作　　者：高平原 

机构地区：[1]中交第一航务工程局有限公司第一工程公司,天津300456

出　　处：《水运工程》2009年第5期143-148,共6页Port & Waterway Engineering

摘　　要：上海长江大桥封底混凝土施工处在水位变动区(平均低潮位+0.86 m,而封底混凝土底高程为+0.5 m),即使赶低潮施工仍有部分混凝土为水下施工。如何保证封底混凝土施工质量是本工程一大难点。根据承台水下混凝土受力情况,采用有限元方法进行计算分析,据此指导施工,保证了施工质量。The bottom concrete construction of Shanghai Yangtze River bridge is at the water levet fluctuation area （The average low tide is ＋0.86 m, but the elevation of bottom concrete is ＋0.5 m）. Even if we try to implement the construction at low tide, still a part of concrete construction is conducted underwater. How to guarantee the construction quality of bottom concrete is the key point of this project. According to the tension condition of the underwater concrete, adopting the FEM, we carried out the calculation and analysis, and directed the construction with the analyzed results.

关 键 词：钢套箱 封底混凝土 施工技术 

分 类 号：U445.57[建筑科学—桥梁与隧道工程]