EVALUATION OF SPRING CONSTANTS OF A SHIELD SEGMENT

In general, most tunnels have been constructed by the cut and cover method in relatively small overburden. Recently, however, in metropolitan areas such as Tokyo, public concern that tunnels should be built deep under the ground by methods other than the cut and cover method is increasing because of construction conditions and environmental reasons. Most of all, there has been a marked development in the shield tunneling method. Particularly the shape and structural type of shield segments and joints have been diversified. As a result, considerable research has been performed on methods of designing shield segments. In the conventional design of shield segments, two-dimensional analysis used to be employed in its cross section. In recent years, the beam-spring model, or a model which represents the behaviors of segments at joints and the effects of segments joined in the axial direction, is often used partly in the design since the various types of the segments and joints have been developed. This paper presents the details of the design procedure and the results of the loading tests on the joints using full-scale segments of the Nishi-Shinjuku shield tunnel to evaluate the appropriate spring constants of both inter-segment pieces and inter-segment ring joints. (a) For the covering entry of this conference, please see ITRD abstract no. E204151.

• Corporate Authors:

  ROAD ENGINEERING ASSOCIATION OF ASIA AND AUSTRALASIA (REAAA)

  46B, JALAN BOLA TAMPAR 13/14, SECTION 13
  SHAH ALAM,   Malaysia  40100
• Authors:
  • ODAGIRI, N
  • DOBASHI, H
  • NAMIKAWA, K
• Publication Date: 2000

Language

• English

Media Info

• Pagination: 11 p.
• Serial:
  • ROAD ENGINEERING ASSOCIATION OF ASIA AND AUSTRALASIA (REAAA) CONFERENCE, 10TH, 2000, TOKYO, JAPAN
  • Publisher: ROAD ENGINEERING ASSOCIATION OF ASIA AND AUSTRALASIA (REAAA)

Subject/Index Terms

• TRT Terms: Conferences; Design; Drilling; Joints; Mathematical analysis; Shear strength; Strength of materials; Tunnels; Urban areas
• Geographic Terms: Japan
• ITRD Terms: 6471: Analysis (math); 8525: Conference; 9011: Design (overall design); 3871: Drilling; 8053: Japan; 2998: Joint (structural); 5531: Shear; 5544: Strength (mater); 3374: Tunnel; 313: Urban area
• Subject Areas: Bridges and other structures; Design;

Filing Info

• Accession Number: 00937165
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Feb 5 2003 12:00AM