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首页> 外文期刊>Bulletin of earthquake engineering >Strength and stiffness parameters of energy dissipation devices for the seismic protection of building on soft soils
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Strength and stiffness parameters of energy dissipation devices for the seismic protection of building on soft soils

机译：软土建筑地震保护装置的强度和刚度参数

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摘要

Energy dissipation devices are continuously implemented in several buildings and bridges around the world. The dynamic characteristics of the strong motions in soft soil sites make attractive the use of this type of passive control system; however, its applicability remains limited. In spite of the important number of papers studying the seismic behavior of structures with passive control devices, only few of them consider low frequency excitations and even less studies combine low frequency excitations and yield type devices. One of the main impediments regarding to the use of energy dissipation devices is the lack of specific studies, showing their applicability as a function of the dynamic characteristics of structural systems with dissipation devices located on soft soil sites. This study conducts a parametric study of a single degree of freedom system with metallic yielding devices, with the aim of proposing graphs for the preliminary design of buildings with energy dissipation devices, by means of drift, frame ductility and dissipator ductility response spectra. The excitation of the models is a collection of seismic strong motions recorded in soft soil sites. 21,600 nonlinear time history analyses were processed for the entire combinations of the displacement and stiffness parameters of the structures and devices selected. The results allow an easy way to select initially the mechanical and geometrical properties of the energy dissipation devices with elastoplastic behavior, as a function of the fundamental period of the building. Finally a case study of a six-story RC building with metallic energy dissipation devices demonstrates the applicability of the proposed response spectra.
机译：在世界各地的一些建筑物和桥梁中不断地安装消能装置。软土场地强震的动力特性使这种被动控制系统的使用具有吸引力；然而，它的适用性仍然有限。尽管具有被动控制装置的结构的抗震性能研究论文的数量是非常重要的，但只有少数人考虑低频激励，甚至更少的研究结合低频激励和产量类型的设备。使用消能装置的主要障碍之一是缺乏具体研究，表明其适用性取决于位于软土场地的消能装置结构系统的动力特性。本研究对带有金属屈服装置的单自由度系统进行了参数研究，目的是通过漂移、框架延性和耗散延性反应谱，为带有耗能装置的建筑物的初步设计提供图表。模型的激励是软土场地记录的地震强运动的集合。对所选结构和装置的位移和刚度参数的整个组合进行了21600次非线性时程分析。计算结果提供了一种简单的方法，可以初步选择具有弹塑性行为的耗能装置的力学和几何特性，作为建筑物基本周期的函数。最后，以一栋六层钢筋混凝土建筑为例，说明了所提出的反应谱的适用性。

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