EFFECTS OF SEISMIC AND SUBSOIL CONDITIONS ON EARTHQUAKE RESPONSE SPECTRA

Characteristics of earthquake response spectra of 44 strong-motion records observed recently in Japan are studied. Response spectra are classified into groups according to magnitudes, maximum ground accelerations, epicentral distances, and subsoil condition. The spectra are averaged respectively in each group. From this investigation the following conclusions are drawn: (1) The average response acceleration factors (the averages of the ratio of the maximum response accelerations to the maximum ground accelerations) for the records observed during the earthquakes with large magnitudes show comparatively high level in the range of relatively long natural periods; (2) the factors for the records with accelerations of 200 gals or more show comparatively low level; (3) the factors for the records with great epicentral distances show comparatively high level; and (4) the factors for the records obtained on stiff subsoil layers are lower than the ones on soft subsoil layers. /Author/

• Supplemental Notes:
  • Papers of International Conferences 1972-1974.
• Corporate Authors:

  Public Works Research Institute

  2-28-32 Honkomagome, Bunkyo-ku
  Tokyo,   Japan 

  Public Works Research Institute

  2-28-32 Honkomagome, Bunkyo-ku
  Tokyo,   Japan 
• Authors:
  • KURIBAYASHI, E
  • IWASAKI, T
  • Iida, Y
  • Tuji, K
• Conference:
  • Papers of International Conferences 1972-1974.
• Publication Date: 1975

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 285-298

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Classification; Earthquakes; Magnitude; Seismology; Soils; Subsoil
• Uncontrolled Terms: Response spectra; Soil conditions
• Old TRIS Terms: Epicenter
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00128525
• Record Type: Publication
• Report/Paper Numbers: Tech Memo #1023 Pt I
• Files: TRIS
• Created Date: May 14 1976 12:00AM