Donghai bridge is the first building express highway bridge over sea in real signification in China. It has special construction condition, construction process and difficult degree for construction.
东海大桥是我国在建的第一座真正意义上的高速公路跨海大桥，建设条件特殊，施工工艺复杂且施工难度高。
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With reference to the gravity survey, this paper describes the schemes of control network layout used with global positioning system (GPS) technique for Donghai Bridge project over sea.