Super Long and Large Diameter Underwater Pile Foundation Rapid Construction Technology in Large Diameter Pebble+Multi Slope Tight Sandstone Formation

The stratum of the main bridge site of a bridge is complex, the pile foundation of the main bridge is long, the pile diameter is large, and it is located near the main channel with a water depth of about 6 m,so the construction is diffi cult and the safety risk is high. Through the research, the project puts forward the rapid construction technology of super large diameter pile foundation under water in large diameter pebble + multiinclined tight sandstone stratum, It greatly improves the construction effi ciency of super long and large diameter pile foundation under water in complex geological environment, improves the construction quality of pile foundation, and reduces the construction risk of pile foundation.