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An Experimental Study on Behavior Characteristics of the Pretension Soil Nailing Systems  

Choi, Young-Geun (iCONTEC Co., Ltd.)
Shin, Bang-Woong (Chungbuk National Univ)
Park, Si-Sam (Research Institute of Science and Technology, Hongik Univ)
Kim, Hong-Taek (Dept. of Civil Engrg., Hongik Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.2, 2004 , pp. 87-96 More about this Journal
Abstract
Application of the soil nailing method is continuously extending in maintaining stable excavations and slopes. However, ground anchor support system occasionally may not be used because of space limitations in urban excavation sites nearby the existing structures. In this case, soil nailing system with relatively short length of nails could be efficiently adopted as an alternative method. The general soil nailing support system, however, may result in excessive deformations particularly in an excavation zone of the existing weak subsoils. Pretensioning the soil nails then could play important roles to reduce deformations mainly in an upper part of the nailed-soil excavation system as well as to improve local stability. In this study, a newly modified soil nailing technology named as the PSN (Pretension Soil Nailing) is developed to reduce both facing displacements and ground surface settlements in top-down excavation process as well as to increase the global stability. Up to now, the PSN system has been investigated mainly focusing on an establishment of the design procedure. In the present study, laboratory model tests are carried out to investigate the failure mechanism and behavior characteristics of the PSN system. Various results of model tests are also analyzed to provide a fundamental basis for the efficient design.
Keywords
Behavior characteristics; Global stability; Laboratory model tests; Pretension soil nailing system;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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[ Park,Si-Sam ] / Ph.D. Thesis, Department of Civil Engineering, Hongik University
2 An Experimental Study of the Soil Nailed Wall Behavior with Front Plate Rigidity /
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[ Kim,Hong-Taek;Choi,Young-Geun;Park,Si-Sam;Kim,Berm-Seuk ] / Proc. of the KGS Spring '03 National Conference
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