DYNAMIC BEHAVIOR OF A SUBMERGED TUNNEL DURING EARTHQUAKES

The authors have conducted model tests for the purpose of clarifying the dynamic behavior of the submerged tunnel and the interaction between the tunnel and the surrounding soil during earthquakes. The earthquake observations have been carried out on an actual submerged tunnel in order to obtain information on the real behavior of deformation of the submerged tunnel during earthquakes. By making reference to the data thus obtained, a method of earthquake response analysis is proposed for this type of tunnel using a new mathematical model in which the ground around the tunnel is represented by lumped masses along the tunnel axis. The tunnel is assumed as a beam on an elastic foundation. Several problems regarding the earthquake resistant design of the submerged tunnel are discussed including the effects of the ground conditions and of joints, etc., on its earthquake response and a preliminary earthquake resistant design method is proposed. /Author/

  • Corporate Authors:

    University of Tokyo

    22-1 Roppongi 7 Chome, Minato-ku
    Tokyo 106,   Japan 
  • Authors:
    • Tamura, C
    • OKAMOTO, S
    • Hamada, M
  • Publication Date: 1975-3

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  • Accession Number: 00098597
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 30 1975 12:00AM