| Autor: |
Bhartia, Binod K., Vanmarcke, Erik H. |
| Zdroj: |
Journal of Engineering Mechanics; October 1991, Vol. 117 Issue: 10 p2407-2428, 22p |
| Abstrakt: |
An approach is developed for approximate random vibration analysis of multidegree hysteretic structures based on the concept of energy balance, i.e., the excitation energy is balanced with the energy the structure dissipates in hysteresis and viscous damping. All response measures are estimated based on random vibration analyses of an associate linear system. Inelastic response measures, such as cumulative plastic drift at the local level, are modeled based on Markov process theory. The approach is developed for elastoplastic and trilinear hysteretic multidegree structures. Analytical results are compared to those based on simulation for the distribution of the mean peak ductility ratio over the structure's height for several multistory buildings subjected to stochastic seismic excitation. The focus is on studying the effect of earthquake intensity and the presence of a soft story on the distribution of ductility ratio versus height. Insights gained from such analyses should be helpful in evaluating seismic design strategies of buildings. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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