秀山大桥深水峡道海域桩基础群 自升式平台施工技术研究.

Guanshan to Xiushan channel is a typical deep water and strait -channel sea area, with uneven and W -shaped underwater terrain, exposed bedrock, steep rock face and high rock strength. Xiushan Bridge crosses the strait -channel sea area, with the maximum dip angle of the rock surface at the pier position is 30毅, the maximum water depth is 39 m and the maximum flow rate is 3.8 m/s. It is extremely difficult to construct the drilling platform of the pile foundation construction in deep water. By comparison of different methods for piles foundation construction, the structural strength, and anti-overturning and anti-slip performance of the jack-up platform were analyzed, and the construction technology of building pile foundation drilling platform by jack -up platform was proposed, which has effectively solved the problems of pile foundation drilling platform construction in the sea area with exposed bedrock, high strength, steep slope, deep water, high velocity of flow, and significant strait-channel effects. It can provide a reference for similar engineering construction. [ABSTRACT FROM AUTHOR]