Modal Analysis Methods in Seismic Design for Buildings

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.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1975
Accession Number
ADA012732

Entities

People

  • William K. Stockdale

Organizations

  • Construction Engineering Research Laboratory

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Cantilever Beams
  • Commerce
  • Computers
  • Concrete
  • Construction
  • Dynamic Response
  • Engineering
  • Equations
  • Frequency
  • Materials
  • Mechanics
  • Military Facilities
  • Modal Analysis
  • Modulus Of Elasticity
  • Resonant Frequency
  • Shape
  • Square Roots

Fields of Study

  • Engineering

Readers

  • Aerospace Test and Evaluation
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Seismology