Research on the Application of Threaded Enlarged Steel Pile in Deep Foundation Pit Support Engineering
The threaded enlarged steel pile is a new type of inclined supporting structure gradually emerging in Jiangsu,Zhejiang and Shanghai in recent years.Compared with the traditional reinforced concrete internal support,it has the advantages of convenient construction,shortened construction period and cost saving.Combined with a large-scale deep foundation pit project in Suzhou Industrial Park,the application of threaded enlarged steel pile is introduced,with emphasis on the selection of support type and construction technology.The static load test results show that the bearing capacity of steel pile with enlarged thread meets the design requirements.The calculation results of software and field monitoring data show that the deformation control effect of steel piles is good,and the successful experience of this project can be used for reference by similar projects.
foundation pit supportsteel pile with enlarged threadgrouted steel pipebearing capacity