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首页> 外文会议>Third World Conference on Structural Control Vol.1 Apr 7-11, 2002 Como, Italy >Self-centring Capability Evaluation of Seismic Isolation Systems Based on Energy Concepts
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Self-centring Capability Evaluation of Seismic Isolation Systems Based on Energy Concepts

机译：基于能量概念的隔震系统自定心能力评估

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It was not until the most recent years that self-centring capability was identified as a fundamental function of an isolation system. This tardy occurrence can perhaps be explained by the fact that, historically, the first seismic isolators were simple rubber bearings - which are endowed with an optimal self-centring capability. With the introduction in the market of other types of isolators, that are generally not fitted with an intrinsic self-centring capability, the problem of providing this function has re-asserted its vital role. Notwithstanding, the latter was never paid sufficient attention by seismic engineering experts, to the point that the formulation of a criterion to quantify it was only acknowledged for the first time in 1991 by the AASHTO Guide Specification for Seismic Isolation Design. Then other criteria were developed, but none of them is based upon solid theoretical fundamentals, but rather make reference to an empirical approach, valid for only one class of devices. The scope of this document is that of attempting a first theoretical approach to the self-centring problem of seismic isolation systems, suggesting an energy-based criterion for its quantification, without pretending to exhaust the subject nonetheless.
机译：直到最近几年，自我中心能力才被确定为隔离系统的基本功能。从历史上看，第一个地震隔离器是简单的橡胶轴承-具有最佳的自动定心能力，这可以解释这种迟钝的发生。随着市场上其他类型隔离器的推出，这些隔离器通常不具备固有的自动定心功能，因此提供此功能的问题重新发挥了至关重要的作用。尽管如此，地震工程专家从未对后者进行足够的重视，以至于量化标准的制定仅在1991年由AASHTO地震隔离设计指南规范首次认可。然后开发了其他标准，但没有一个标准是基于扎实的理论基础，而是参考了一种经验方法，该方法仅对一类设备有效。本文档的范围是尝试对地震隔离系统的自定中心问题进行第一种理论方法，提出了基于能量的定量方法，但又不打算穷尽该主题。

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