SITE FACTORS AND SITE CATEGORIES IN SEISMIC CODES: A PERSPECTIVE

The paper discusses the evidence on amplification of earthquake motions due to local soils which culminated in the new definitions of site categories and site coefficients incorporated, first in the 1994 National Earthquake Hazards Reduction Program (NEHRP) Recommended Provisions for Seismic Regulations for New Buildings, and more recently in the 1997 Uniform Building Code. These site categories and site coefficients are described and compared to previous code provisions. Preliminary results of recent studies are discussed including average site coefficients calculated from recordings of the 1994 Northridge earthquake, which generally validate the 1994 NEHRP values. Areas of further research are suggested. Finally, it is recommended that the seismic design provisions contained in the 1996 American Association of State Highway and Transportation Officials (AASHTO) Standard Specifications for Highway Bridges be updated accordingly.

• Record URL:
  https://ntlrepository.blob.core.windows.net/lib/15000/15900/15917/PB2000101705.pdf
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10883800
• Corporate Authors:

  National Center for Earthquake Engineering Research

  State University of New York, Buffalo, Red Jacket Quadrangle, Box 610025
  Buffalo, NY  United States  14261-0025
• Authors:
  • DOBRY, R
  • Ramos, R
  • Power, M S
• Conference:
  • FHWA/NCEER Workshop on the National Representation of Seismic Ground Motion for New and Existing Highway Facilities
  • Location: Burlingame, California
  • Date: 1997-5-29 to 1997-5-30
• Publication Date: 1997-9-22

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 137-169
• Serial:
  • National Center for Earthquake Engineering Research
  • Publisher: National Center for Earthquake Engineering Research
  • ISSN: 1088-3800

Subject/Index Terms

• TRT Terms: Bridge design; Bridges; Coefficients; Earthquake resistant design; Future; Highway bridges; Location theory; Regulations; Research; Seismicity; Specifications; Structural design; Validation
• Identifier Terms: American Association of State Highway and Transportation Officials; Northridge Earthquake, January 17, 1994
• Uncontrolled Terms: Amplification; Future research
• Old TRIS Terms: National earthquake hazards reduction program; Site categories; Site coefficients; Uniform building code
• Subject Areas: Bridges and other structures; Design; Economics; Highways; Law; Research; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00751049
• Record Type: Publication
• Report/Paper Numbers: Technical Report, NCEER-97-0010
• Files: NTL, TRIS
• Created Date: Jul 22 1998 12:00AM