RESEARCH STUDIES INTO THE BEHAVIOUR OF TUNNELS AND TUNNEL LININGS IN SOFT GROUND

The report covers work carried out in the Cambridge University engineering department under a Transport and Road Research Laboratory sponsored research contract to study the behaviour of tunnels and tunnel linings in soft ground. The work consists of model studies coupled with theoretical analyses of the deformations around, collapse of, and lining loads in, shallow tunnels in sands and clays. In the model tests soil displacements were measured by lead shot radiographic techniques and lining stresses and moments were found from strain gauges bonded to the inner and outer surfaces of thin aluminium linings. The theoretical analyses of stresses and deformations were based on finite element and associated fields methods using models for the soils obtained from a critical state approach to soil behaviour. The report discusses the scope and objectives of the research and presents and discusses in some detail the results of model tests on a lined and an unlined tunnel in overconsolidated clay. It also considers methods of estimating the stability of lined and unlined tunnels. (A) /TRRL/

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • ATKINSON, J H
  • Orr, TLL
  • Potts, D M
• Publication Date: 1975

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 34 p.

Subject/Index Terms

• TRT Terms: Clay; Compressibility; Consolidations; Deformation; Dislocation (Geology); Failure; Finite element method; Inspection; Loads; Mathematical models; Motion; Radioactivity; Radiography; Sand; Soft soils; Soils; Stability (Mechanics); Strain gages; Structural analysis; Theory; Tunnel lining; Tunnels
• Uncontrolled Terms: Model tests; Models; Soil deformation
• Old TRIS Terms: Tunnel failures
• ITRD Terms: 4177: Clay; 5905: Compressibility; 5791: Consolidation (soil); 5595: Deformation; 5567: Load; 6205: Model (not math); 5483: Movement; 4105: Sand; 4156: Soil; 5930: Stability; 3374: Tunnel; 3385: Tunnel lining
• Subject Areas: Bridges and other structures; Construction; Design; Geotechnology; Highways; I25: Design of Tunnels; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00132297
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Suppl. Rpt. 176UC R&D Rpt.
• Files: ITRD, TRIS
• Created Date: Jun 23 1976 12:00AM