Identification and prediction of deformation behavior around a shallow NATM tunnel using strain softening model

In urban area, constructions of soft ground tunnels are associated with deformation of the ground and surface subsidence. In this paper, a finite element analysis procedure considering strain softening behavior is applied for identification and prediction of deformational behavior around a shallow NATM tunnel. The method used here incorporates reduction of shear stiffness, as well as strain softening effects of given material strength parameters. The predictive capability of the method was also tested at three different stages in which higher accuracy of prediction was achieved accordingly in latter stages. Deformation mechanism was also identified using reasonably tunnel parameters. (A) This paper was presented at Safety in the underground space - Proceedings of the ITA-AITES 2006 World Tunnel Congress and the 32nd ITA General Assembly, Seoul, Korea, 22-27 April 2006. For the covering abstract see ITRD E129148. "Reprinted with permission from Elsevier".

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08867798
• Authors:
  • AKUTAGAWA, S
  • LEE, J
  • DOBA, N
  • KITAGAWA, T
  • ISOGAI, A
  • MATSUNAGA, T
• Publication Date: 2006-5

Language

• English

Media Info

• Pagination: p387
• Monograph Title: Rock chain 1: A set of codes for the studies of blocks instability inside a tunnel
• Serial:
  • Tunnelling and Underground Space Technology
  • Volume: 21
  • Issue Number: 3-4
  • Publisher: Elsevier
  • ISSN: 0886-7798
  • Serial URL: https://www.sciencedirect.com/journal/tunnelling-and-underground-space-technology

Subject/Index Terms

• TRT Terms: Construction; Design; Excavation; Planning; Tunnels; Urban areas
• ITRD Terms: 3655: Construction; 9011: Design (overall design); 5155: Excavation (process); 143: Planning; 3374: Tunnel; 313: Urban area
• Subject Areas: Bridges and other structures; Construction; Design; Geotechnology; Planning and Forecasting; I40: Soils and Rocks;

Filing Info

• Accession Number: 01032534
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Sep 6 2006 1:56PM