BEHAVIOUR OF SUBAQUEOUS TUNNELS DURING EARTHQUAKES

THREE-DIMENSIONAL MODELS OF A SUBAQUEOUS TUNNEL WERE BUILT ON A SHAKING TABLE AND VIBRATED FOR THE PURPOSE OF INVESTIGATING THE DYNAMIC BEHAVIOR OF THE TUNNEL. THE MATERIAL OF THE SOFT SURFACE LAYER WAS GELATIN GEL AND THAT OF THE TUNNEL WAS SILICON RUBBER. EARTHQUAKE OBSERVATIONS AT THE SITE OF THE REAL SUBAQUEOUS TUNNEL HAVE BEEN CARRIED OUT USING ACCELEROMETERS AND STRAIN GAUGES SET ON THE WALLS OF THE TUNNEL. AT THE SITE, MICRO-TREMORS WERE ALSO MEASURED. IN THESE STUDIES, IT WAS NOTED THAT NON-UNIFORM DISPLACEMENTS OF THE GROUND ALONG THE TUNNEL AXIS WAS CAUSED BY VARIATIONS OF THE DYNAMIC BEHAVIOR OF THE GROUND, AND THAT THE TUNNEL DEFORMS CORRESPONDINGLY TO THE VARYING DEFORMATIONS OF THE GROUND.

• Corporate Authors:

  Intl J Earthquake Engr & Struct Dynam

  ,    
• Authors:
  • OKAMOTO, A
  • Tamura, C
• Publication Date: 1973-3

Media Info

• Pagination: p. 253-66
• Serial:
  • Volume: 1
  • Issue Number: 3

Subject/Index Terms

• TRT Terms: Accelerometers; Deformation; Earthquakes; Mathematical models; Rubber; Silicon compounds; Strain gages; Structural analysis; Structural design; Tunnels; Underwater tunnels
• Uncontrolled Terms: Models; Tunnel design
• Old TRIS Terms: Gelatin; Subaqueous tunnel; Subfloors
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 00215643
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 20 1973 12:00AM