Accession Number:

ADA012732

Title:

Modal Analysis Methods in Seismic Design for Buildings

Descriptive Note:

Final rept. Aug 1974-Feb 1975

Corporate Author:

CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL

Personal Author(s):

Report Date:

1975-06-01

Pagination or Media Count:

37.0

Abstract:

This report is the first step in preparing a change to the tri-services manual TM 5-809-10, Seismic Design for Buildings. Changes in this manual are necessary to provide guidance for the design of critical military facilities which must remain functional after subjection to strong earthquakes. This report describes and discusses modal analysis methods used in the dynamic analysis of structures in conjunction with the earthquake response spectra and time history methods. Elastic and inelastic conditions are discussed, as well as structural damping and assumptions and limitations of the methods. Example calculations are included.

Subject Categories:

  • Seismology
  • Civil Engineering
  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE