Nonlinear dynamic analysis of multi-base seismically isolated structures with uplift potential Ⅰ:formulation

作     者：Panos C.Tsopelas Panayiotis C.Roussis Michael C.Constantinou 

作者机构：Department of Civil EngineeringUniversity of ThessalyVolosGreece Department of Civil and Environmental EngineeringUniversity of CyprusNicosiaCyprus Department of CivillStructural and Environmental EngineeringUniversity at BuffaloState University of New YorkBuffaloNYUSA 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2009年第8卷第3期

页      面：421-431页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：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 

主　　题：friction-pendulum isolator, seismic isolation nonlinear dynamic analysis uplift multiple superstructures multiple bases 

摘      要：The complexity of modem 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 modem isolation systems.