松花江特大桥深水围堰施工方案比选

Comparison and Choice of Construction Scheme for Deep Water Cofferdam of The Songhua River Super Major Bridge

根据松花江特大桥主桥基础围堰水文、地质及现场实际情况分析,综合考虑各围堰方案工艺、工期、造价等因素,进行深水围堰方案比选,最终确定单层钢板桩围堰、无封底混凝土、大管井降水井降水的施工方案。

According to the analysis on hydrological, geological and the actual situations of cofferdam of the fondation in the songhua river super major bridge, and the account o f each cofferdam＇s techno ingy, time, cost, deep water cofferdam scheme comparison and choice is done, and finally the de sign of single steel sheet pile cofferdam, no bottom sealing concrete, and reducing water level by big tube well is selected.