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| Nonlinear dynamic analysis of multi-base seismically isolated structures with uplift potential I： formulation | |
| 作者单位： | Panos C. Tsopelas(Department of Civil Engineering, University of Thessaly, Volos, Greece);Panayiotis C. Roussis(Department of Civil and Environmental Engineering, University of Cyprus, Nicosia, Cyprus);Michael C. Constantinou(Department of Civil, Structural and Environmental Engineering, University at Buffalo, State University of New York, Buffalo, NE USA) |
| 基金项目： | Multidisciplinary Center for Earthquake Engineering Financial support for this project was provided by the Multidisciplinary Center for Earthquake Engineering Research through a grant from the Earthquake Engineering Research Centers Program of the National Science Foundation under award number EEC 9701471. |
| 摘 要： | |
| 关 键 词： | 隔震结构 非线性动力分析 地震 隆起 计算模型 上层建筑 非线性现象 非线性建模 |
| 收稿时间： | 2 October 2008 |
Nonlinear dynamic analysis of multi-base seismically isolated structures with uplift potential I: formulation |
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| Authors: | Panos C Tsopelas Panayiotis C Roussis Michael C Constantinou |
| Institution: | 1. Department of Civil Engineering, University of Thessaly, Volos, Greece 2. Department of Civil and Environmental Engineering, University of Cyprus, Nicosia, Cyprus 3. Department of Civil, Structural and Environmental Engineering, University at Buffalo, State University of New York, Buffalo, NE USA |
| Abstract: | The complexity of modern seismically isolated structures requires the analysis of the structural system and the isolation system in its entirety and the ability to capture potential discontinuous phenomena such as isolator uplift and their effects on the superstructures and the isolation hardware. In this paper, an analytical model is developed and a computational algorithm is formulated to analyze complex seismically isolated superstructures even when undergoing highly-nonlinear phenomena such as uplift. The computational model has the capability of modeling various types of isolation devices with strong nonlinearities, analyzing multiple superstructures (up to five separate superstructures) on multiple bases (up to five bases), and capturing the effects of lateral loads on bearing axial forces, including bearing uplift. The model developed herein has been utilized to form the software platform 3D-BASIS-ME-MB, which provides the practicing engineering community with a versatile tool for analysis and design of complex structures with modern isolation systems. |
| Keywords: | friction-pendulum isolator seismic isolation nonlinear dynamic analysis uplift multiple superstructures multiple bases |
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