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采用何种方法进行围堰是桥梁水中墩承台施工首要考虑的问题,如何在水下面安装模板与钢筋,如何浇筑混凝土,都需要详尽地进行经济比较。该文介绍了东莞市东部快速路寒溪河特大桥主要难点之一水中主墩承台施工,主墩承台施工经多方案详细的比选,采用了钢套箱围堰浇筑水中混凝土承台,提出了钢套箱的设计依据及施工工艺,对钢围堰的设计和施工过程中出现的技术难点作了分析。
Which method should be adopted for cofferdam is the most important consideration in the construction of pier abutment in bridge water. How to install the formwork and steel bar below the water and how to pour the concrete all require detailed economic comparison. This article introduces the construction of the main pier of water main one of the main difficulties of the expressway Hanxi River Bridge in East Dongguan City. The construction of the main pier cap is compared and selected in detail by multiple schemes, and the steel cap cofferdam pouring concrete bearing platform , Put forward the design basis and construction technology of steel box, analyzed the technical difficulties in the design and construction of steel cofferdam.