Abstract: Based on the deep foundation pit design and construction adjacent the pipe pile foundation, the surrounding environment, hydro\|geological conditions and other factors were comprehensively considered, the cast\|in\|situ bored pile was as the retaining structures, the rotary jet grouting pile was as the water resistant curtain and the prestressed internal support was in the foundation pit. There were some problems encountered during the design and construction, which were solved by analysis and some relevant experience were obtained, which provides reference for similar projects to provide experience in supporting.

Key words: deep foundation pit, pipe pile foundation, rotary jet grouting pile, prestress, internal support