Research on Rapid Construction Technology of Deep Water Rock-socketed Bridge Foundation

Abstract

The construction of deep water rock-socketed bridge foundation is pretty difficult and people routinely use the method of combining underwater blasting and double-wall steel box cofferdam support for construction. Combined with the site construction conditions and analysis of FEM software, through schemes comparison and technical research, the paper puts forward the construction scheme of rotary drilling pilot hole, high-pressure rotary jet grouting pile for grouting and water stopping, and cofferdam support for locking steel pipe pile, which completes the foundation construction smoothly and rapidly. By adopting the technology, the construction period is greatly shortened, the material utilization rate is improved, the construction cost is reduced, and the scheme has reference significance for foundation construction under similar environments.