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1 工程概况 东海大桥工程是国家和上海市“十五”重大建设项目之一。它具有以下特点:1.1 建设规模大 全长约31km,其中海上段为25.3km,是世界上在建的最长桥梁,投资预算超过71亿人民币,合同管理及投资控制任务繁重。1.2 施工环境差 地处外海,受海洋风、浪、流、潮、雾、雨等环境因素的影响较大,年有效作业日数不足50％。但为了满足洋山深水港开港的迫切需要,必须在2005年底建成通车,这对工程施工是一个巨大挑战。
1 Project Overview The Donghai Bridge Project is one of the major construction projects of the State and Shanghai Municipality “15th Five-Year Plan”. It has the following characteristics: 1.1 The scale of construction is about 31km in length, of which the sea section is 25.3km. It is the longest bridge under construction in the world with an investment budget of over 7.1 billion RMB and heavy contract management and investment control tasks. 1.2 The construction environment is poorly located in the open sea, which is greatly affected by the environmental factors such as wind, waves, currents, tides, fog and rain, and the number of effective working days is less than 50%. However, in order to meet the urgent need of establishing the Yangshan Deepwater Port, it must be completed and opened to traffic by the end of 2005, which is a huge challenge to the construction of the project.