Research On The Construction Technology Of Deep Foundation Pit Support

High buildings, underground structures and even the tunnels have been widely constructed during the recent decent with the fast development and progress of science and technology. The deep foundation became the favorite option for these structures in order to sufficiently use the underground space and saving the land resources, in which however, the construction technology of the deep foundation played critical role in structure performance and need to be paid more attention.The construction technology of deep foundation pit support is focused in this paper based on different geotechnical properties and special application in a project. As key part of procedure for the deep foundation construction, the deep foundation pit supporting technology has achieved plenty successful experience in some different area of China with the different ground conditions.According to study on many project application and research achievement of deep foundation pit support construction technology particular under narrow and long construction site condition, a comparison analysis and the practical study have been developed, a review and measurements have also been brought up based on the application.Four parts have been organized for the analysis and study as the follows:1. The background of the research, main technology, relevant classic and main problem of the deep foundation pit support, mean while the main objective of this paper were introduced in first part;2. The deformation mechanism, design method were presented in the second part;3. The deep foundation pit supporting technology of a project under narrow construction site has been analyzed, several optimized and improvement measurements and some design construction and monitor details need to be paid attention were brought up in third part.4. An conclusion remark and some future development trend of the deep foundation pit supporting technology are arranged in the last part.