NDLI: Rapid excavation with a newly developed retaining system: Spiral assembly steel structure

Content Provider	Springer Nature Link
Author	Guan, Cheng li Yang, Yu you Wang, Cheng biao
Copyright Year	2015
Abstract	The spiral assembly steel structure, a newly developed retaining wall for the rapid excavation of small-sized foundation pits in unsaturated soil, is presented. This new type of retaining structure is prefabricated in the factory and is assembled on site in the excavation of a pit. This retaining structure is composed of several prefabricated steel structural units, in which the adjacent steel structural units are joined with connectors. Each steel structural unit has one steel pipe in the radial direction and is welded to a single piece of steel plate. After full installation in situ, the retaining structure becomes a cylindrical steel structure. With the protection afforded by this new type of retaining structure, excavation work can be completed within 24 h to a depth up to 5 m. In order to verify the reliability and effectiveness of this new retaining structure, field construction tests were conducted in Beijing, China. The test construction was monitored. The monitoring program included measuring stress in the structure, lateral earth pressure, and lateral deformation of the surrounding soil. The monitoring data from the field test were compared with the theoretical results. The results show that the proposed new structure is reliable and effective.
Starting Page	2719
Ending Page	2729
Page Count	11
File Format	PDF
ISSN	20952899
Journal	Journal of Central South University of Technology
Volume Number	22
Issue Number	7
e-ISSN	22275223
Language	English
Publisher	Central South University
Publisher Date	2015-07-14
Publisher Place	Changsha
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	working shaft rapid excavation retaining structure field construction monitoring Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Engineering

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