NEHRP Clearinghouse
- Title
- Simple Nonlinear Modelling of Earthquake Response in Torsionally Coupled R/C Structures - A Preliminary Study.
- File
- PB83112821.pdf
- Author(s)
- Saiidi, M.
- Source
- National Science Foundation, Washington, DC., July 1982, 82 p.
- Identifying Number(s)
- COLLEGE OF ENGINEERING-60
- Abstract
- Results are presented of a study to: (1) determine the seismic response of a torsionally coupled building based on multi-degree-of-freedom (MDOF) and single-degree-of-freedom (SDOF) nonlinear models and (2) to develop a simple SDOF nonlinear model to calculate displacement history of structures with eccentric centers of mass and stiffness. It is shown that planar models are able to yield qualitative estimates of the response of the building. The equivalent SDOF model developed as part of this study, the Q-Model-13, is described. The model is used to estimate the response of a hypothetical six-story frame-wall reinforced concrete building with torsional coupling, using two different earthquake intensities. It is shown that the Q-Model-13 can lead to a satisfactory estimate of the response of the structure in both cases.
- Keywords
- Reinforced concrete; Earth quakes; Mechanical hysteresis; Mathematical models; Computer applications; Buildings; Earthquake engineering; Ground motion; Dynamic response; Dynamic structural analysis