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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Cyclic behavior and failure mechanism of self-centering energy dissipation braces with pre-pressed combination disc springs
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Cyclic behavior and failure mechanism of self-centering energy dissipation braces with pre-pressed combination disc springs

机译：预压组合碟形弹簧自定心耗能支架的循环特性及失效机理

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摘要

A new type of bracing system composed of friction energy dissipation devices for energy dissipation, pre-pressed combination disc springs for self-centering and tube members as guiding elements is developed and experimentally studied in this paper. The mechanics of this system are explained, the equations governing its hysteretic responses are outlined and large-scale validation tests of two braces with different types of disc springs are conducted under the condition of low cyclic reversed loading. The experimental results demonstrate that the proposed bracing system exhibits a stable and repeatable flag-shaped hysteretic response with an excellent self-centering capability and effective energy dissipation throughout the loading protocol. Furthermore, the maximum bearing force and stiffness are predicted well by the equations governing its mechanical behavior. Fatigue and destructive test results demonstrate that the proposed bracing system can maintain stable energy dissipation and self-centering capabilities under large deformation cyclic loading even when the tube members exceed the elastic limit and that a larger bearing capacity is achieved by the system that has disc springs without a bearing surface. Copyright (c) 2016 John Wiley & Sons, Ltd.
机译：本文开发了一种新型的支撑系统，该系统由用于耗能的摩擦耗能装置，用于自定心的预压组合碟形弹簧和以管构件为导向元件组成，并进行了实验研究。解释了该系统的力学原理，概述了控制其滞后响应的方程式，并在低循环反向载荷条件下进行了两种不同碟形弹簧支撑的大规模验证试验。实验结果表明，提出的支撑系统表现出稳定且可重复的旗形滞后响应，并具有出色的自定心能力和在整个​​加载过程中有效的能量耗散。此外，通过控制其机械性能的方程可以很好地预测最大轴承力和刚度。疲劳和破坏性测试结果表明，即使在管件超过弹性极限时，所提出的支撑系统在大变形循环载荷下仍可保持稳定的能量耗散和自定心能力，并且具有碟形弹簧的系统可实现更大的承载能力没有支撑表面。版权所有（c）2016 John Wiley＆Sons，Ltd.

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