NEHRP Clearinghouse
- Title
- Seismic Energy Absorption in Simple Structures.
- File
- PB83143917.pdf
- Author(s)
- Zahrah, T. F.; Hall, W. J.
- Source
- National Science Foundation, Washington, DC., July 1982, 227 p.
- Identifying Number(s)
- ['UILU-ENG-82-2011', 'STRUCTURAL RESEARCH SER-501']
- Abstract
- The energy absorption in, and the inelastic behavior of, simple structures during strong earthquake excitation are investigated to determine each structure's response to various types of ground motion and to identify the factors that influence structural deformation and damage. The investigation focuses on the total amount of energy imparted to a structure, the amount of energy dissipated in the structure by inelastic deformation and by damping, the displacement ductility the structure experiences, and the number of yield excursions and reversal the structure goes through during the excitation. The effects of duration of ground motion on earthquake response are also investigated and, based on the amount of energy imparted to structures, a possible effective motion criterion is defined. Two methods of scaling ground motion records for equal damage potential are examined. The inverse of the scale factors may be used as reduction factors to modify elastic response spectra for design purposes.
- Keywords
- Earthquake resistant structures; Seismic waves; Mechanic hysteresis; Dynamic response; Computer applications; Earthquake engineering; Ground motion; Degrees of freedom; Cyclic loads; Linear systems; Nonlinear systems