STRUCTURAL DESIGN OF UNDERGROUND STATIONS FOR EASTSIDE EXTENSION OF LOS ANGELES METRO RAIL SYSTEM
Los Angeles County Metropolitan Transportation Authority (MTA) has adopted "Criteria for Seismic Design of Underground Structures". The effect of earthquake deformation (racking) on the structures requires that the structure conform to free field soil deformations. After major earthquakes such as the 1989 Whittier Narrows Earthquake and the 1994 Northridge Earthquake, incorporating seismic consideration into the design and construction of the Metro Rail System has been and continues to be a high priority. This paper explains in details the structural criteria for static loading conditions, for earthquake deformations for ODE and MDE, and for dynamic soil pressure increment. The paper shows the methodology for modeling of the structure, various loading cases, support conditions including use of soil springs and various loading combinations to define worst loading case at various locations in the structure. Finally, the paper will illustrate the detailing examples for ductile behavior of the structure.
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Supplemental Notes:
- Full Conference proceedings available only on CD.
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Corporate Authors:
American Public Transportation Association
1201 New York Avenue, NW
Washington, DC 20005 -
Authors:
- Pandaya, N P
- Lai, C C
- Mohr, L J
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Conference:
- Proceedings of the 1998 Rapid Transit Conference
- Location: San Diego, California
- Date: 1998-6-7 to 1998-6-11
- Publication Date: 1998
Language
- English
Media Info
- Pagination: 7p
Subject/Index Terms
- TRT Terms: Collapse properties; Deformation; Ductility; Earthquake resistant structures; Seismicity; Shear reinforcement; Soil mechanics; Structural design; Underground structures
- Geographic Terms: Los Angeles (California)
- Subject Areas: Bridges and other structures; Construction; Geotechnology; Public Transportation;
Filing Info
- Accession Number: 00769774
- Record Type: Publication
- Report/Paper Numbers: Volume 2
- Files: TRIS
- Created Date: Sep 23 1999 12:00AM