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首页> 外文期刊>Journal of structural engineering >Evaluation of Design Equations for Critical Properties of Reinforced Elastomeric Bearings and Recommended Revisions
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Evaluation of Design Equations for Critical Properties of Reinforced Elastomeric Bearings and Recommended Revisions

机译：增强弹性轴承关键特性的设计方程评价及推荐修订

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摘要

Global interest in seismic isolation technology continues to increase due to the satisfactory performance of isolated structures in recent earthquake events. In addition to the overall response of the structure, the design of the isolation devices is an important consideration. Reinforced elastomeric bearings are commonly used in seismic isolation applications and as bridge bearings. Relevant standards have been developed to guide designers on several critical design properties, such as the compression and bending modulus and the maximum shear strain due to compression and rotation. These standards commonly assume that the elastomer is incompressible and that the reinforcement is rigid and inextensible. In this paper, inconsistencies in design equations within and between selected standards are identified and discussed. It is shown that the aforementioned assumptions can result in significant error depending on the design and geometry of the bearing. To address these inconsistencies and to minimize the error, new design equations are derived and proposed. The proposed design equations include the compressibility of the elastomer and the extensibility of the reinforcement. The derivation of the proposed design equations is presented and the equations are compared against the analytical solutions and current design standards. It is shown that the proposed design equations are accurate, simple to use, and can address current inconsistencies in critical design properties.
机译：由于近期地震事件中的隔离结构令人满意，对地震隔离技术的全球兴趣继续增加。除了结构的整体响应之外，隔离装置的设计是重要的考虑因素。增强弹性轴承通常用于地震隔离应用和桥梁轴承。已经开发了相关标准，以指导设计人员在几种关键设计性质上，例如压缩和弯曲模量和由于压缩和旋转引起的最大剪切应变。这些标准通常假设弹性体是不可压缩的并且加强件是刚性和不易延伸的。在本文中，确定并讨论了所选标准内和之间的设计方程的不一致。结果表明，根据轴承的设计和几何形状，上述假设可能导致显着的误差。为了解决这些不一致，并最大限度地减少错误，导出和提出了新的设计方程。所提出的设计方程包括弹性体的可压缩性和加强件的延伸性。提出了所提出的设计方程的推导，并将方程与分析解决方案和当前设计标准进行比较。结果表明，所提出的设计方程准确，使用简单，并且可以解决关键设计属性中的当前不一致。

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