SEISMIC RETROFIT OF BORED AND CUT AND COVERED TUNNELS

سال انتشار: 1380
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 2,919

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047_8123536251

تاریخ نمایه سازی: 11 مهر 1384

چکیده مقاله:

The purpose of this paper is to present the geotechnical earthquake engineering analysis and the “innovative” seismic retrofit solution of the Yerba Buena Island and Posey and Webster Street Tunnels located in the San Francisco Bay area. Yerba Buena Island Tunnel is bored through solid rock and the Posey and Webster Street Tunnels are parallel cut and cover tunnels. The tunnels are situated between two major faults, the Hayward Fault and the San Andreas Fault. A two-step analysis procedure was adopted to assess the performance of the tunnels liner subjected to a design earthquake. The first step was to compute seismic induced deformations of the tunnels without the presence of the liner due to seismic wave propagation through the rock and or soil medium. The second step involved imposing the deformations of the tunnel onto the structural liner through springs which accounted for interaction between the liner and surrounding medium. The objectives of the analysis were to estimate the responses of the as-built and retrofit configurations of the tunnels due to seismic excitations. The 1989 Loma Prieta earthquake was the most recent major seismic event that occurred near the Yerba Buena Island and the Posey and Webster Street Tunnels. The earthquake damage to the east span of the San Francisco-Oakland Bay Bridge resulted in a number of injuries and the bridge was closed to traffic for one month. The Yerba Buena Island Tunnel is a link between the east span and west span of the Francisco-Oakland Bay Bridge. Therefore, the Yerba Buena Island Tunnel seismic performance criteria was established to be consistent with that of the San Francisco-Oakland Bay Bridge. The Post Earthquake Investigation report indicated also evidence of liquefaction on the Island of Alameda and in the vicinity of the Posey and Webster Street Tunnels.

نویسندگان

Anooshirvan Shamsabadi

Senior Bridge Engineer, Caltrans, Office of Earthquake Engineering. CA, USA

Hubert LAW

Principal Engineer, Earth Mechanics, Inc.CA, USA

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  • Performance and Design of Tunnel, " Technical Paper for Seismicه ...
  • ADINA - a finite element program for automatio dynamic incremental ...
  • ADINA - a finite element progran for automatic dynamic incremental ...
  • Asakura, T. and Sato, Y. (1996), "Damage to Mountain Tunnels ...
  • Blake, T.F. (1997). Formula (4), Summary Report of Proceedings of ...
  • Earth Mechanics, Inc. (1998), "Report on Wave Propagation Analyses, " ...
  • Geomatrix (1992). Seismic ground motion study for West San Francisco ...
  • Goodman, R. E. (1980), Introduction to Rock Mechanics, John Wiley ...
  • Hudson, M., Idriss, I. M. and Beikae, M. (1994), User's ...
  • Hoek, E. and Brown, E. T. (1980), Underground Excavations in ...
  • Marsh, E. J. (1992), "Two Dimensional Nonlinear Seismic Ground Response ...
  • Center for Earthquake Engineering Research, Project Task No. 106-B(F), September. ...
  • M. Idriss and H B. Seed. Seismic Response of Horizontat ...
  • M. Idriss, I. M. and Sun J. I., "User Manuat ...
  • International Civil Engineering Consultants, Inc. Posey and Webster Street Tubes ...
  • Ishihara, K. (1993). "Liquefaction and flow failures during earthquakes, " ...
  • Lilhanand, K., and Tseng, W.S. (1988). Development and application of ...
  • Lysmer, J. M. and Kuhlemeyer, R. L (1969), "Finite Dynamic ...
  • SASSI (1988). 3D dynamic soil-structure interaction analysis. University of California, ...
  • Seed, H.B., and Idriss, I.M. (1971). "Simplified procedure for evaluating ...
  • Shamsabadi, _ US-Turkey Workshop" Seismic retrofit of the Posey-Webster street ...
  • Shamsabadi, _ US-JAPAN S oil- S _ ture-Interaction " Workshop" ...
  • Somerville, P. G., N. F. Smith, R. W. Graves, and ...
  • نمایش کامل مراجع