ITALIAN EXPERIENCE WITH TUNNEL PORTALS IN DIFFICULT GROUND

Particular difficulties are often experienced in the excavation of the portals for large tunnels, because of geological, morphological and environmental conditions. Ground reinforcement and excavation techniques adopted in the exavation of the portals of some large Italian tunnels, already completed or under construction, are examined. Data are provided on construction methods and also the results of using the umbrella arch method of rock reinforcement in portal construction, using a system of steel rods. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• Corporate Authors:

  Morgan-Grampian Limited

  30 Calderwood Street
  London SE18 6QH,   England 
• Authors:
  • Barisone, G
  • Pellizza, S
  • Pigorini, B
• Publication Date: 1983-12

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 13-17
• Serial:
  • Tunnels & Tunnelling International
  • Volume: 15
  • Issue Number: 12
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Construction management; Equipment; Excavation; Excavations; Intersection elements; Material reinforcement; Mechanically stabilized earth; Metal bars; Methodology; Reinforcing materials; Rock bolting; Rocks; Steel; Technology; Tunneling; Tunnels
• Uncontrolled Terms: Entrances
• Geographic Terms: Italy
• Old TRIS Terms: Portal structures
• ITRD Terms: 3461: Bar; 3666: Construction method; 426: Entrance; 3674: Equipment; 5155: Excavation (process); 8051: Italy; 9102: Method; 3471: Reinforcement (in mater); 4154: Rock; 4542: Steel; 3374: Tunnel
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; Public Transportation; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00382803
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Apr 30 1984 12:00AM