NEHRP Clearinghouse
- Title
- Experiments to Study Earthquake Response of R/C Structures with Stiffness Interruptions.
- File
- PB81183915.pdf
- Author(s)
- Moehle, J. P.; Sozen, M. A.
- Source
- National Science Foundation, Washington, DC. Office of Planning and Resources Management., August 1980, 436 p.
- Identifying Number(s)
- ['UILU-ENG-80-2016', 'STRUCTURAL RESEARCH SER-482']
- Abstract
- An experimental study was undertaken to investigate the response to strong earthquakes of reinforced concrete (R/C) structures having abrupt interruptions in adjacent story stiffness. Four structures (of approximately one-twelfth scale), comprising two nine-story, three-bay or two frames and a wall which acted in parallel were tested. The first story was twice the height of other stories. The experimental variable was the wall height with structures having either no wall or walls which were one-, four-, or nine-stories tall. Experimental measurements include displacements, accelerations, and forces between frames and walls at each level. Observed behavior was interpreted using simple, designed-oriented numerical models. Studies using linear models included (1) comparison of modal-spectral and equivalent static procedures and (2) estimates of response maxima using SDOF oscillators. Studies using nonlinear models included (1) interpretation of behavior for a monotonic lateral loading distribution and (2) estimates of displacement maxima and waveform using SDOF models.
- Keywords
- Seismic design; Reinforced concrete; Stiffness methods; Dynamic response; Earthquake engineering; Concrete structures; Earthquakes; Dynamic structural analysis