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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Out-of-plane stability assessment of buckling-restrained braces including connections with chevron configuration
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Out-of-plane stability assessment of buckling-restrained braces including connections with chevron configuration

机译：屈曲约束牙套的面外稳定性评估，包括人字形连接

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One of the key limit states of buckling-restrained braces (BRBs) is global flexural buckling including the effects of the connections. The authors have previously proposed a unified explicit equation set for controlling the out-of-plane stability of BRBs based on bending-moment transfer capacity at the restrainer ends. The proposed equation set is capable of estimating BRB stability for various connection stiffnesses, including initial out-of-plane drift effects. However, it is only valid for symmetrical end conditions, limiting application to the single diagonal configuration. In the chevron configuration, the out-of-plane stiffness in the two ends differs because of the rotation of the attached beam. In this study, the equation set is extended to BRBs with asymmetric end conditions, such as the chevron configuration. Cyclic loading tests of the chevron configuration with initial out-of-plane drifts are conducted, and the results are compared with the proposed equation set, which is formulated as a function of the normalized stiffness of the attached beam. (c) 2016 The Authors. Earthquake Engineering & Structural Dynamics published by John Wiley & Sons Ltd. (c) 2016 The Authors. Earthquake Engineering & Structural Dynamics published by John Wiley & Sons Ltd.
机译：屈曲约束支撑（BRB）的关键极限状态之一是整体挠曲屈曲，其中包括连接的影响。作者先前已经提出了一个统一的显式方程组，用于基于约束器端的弯矩传递能力来控制BRB的平面外稳定性。拟议的方程组能够估算各种连接刚度的BRB稳定性，包括初始平面外漂移效应。但是，它仅对对称的最终条件有效，从而限制了对单个对角线构造的应用。在人字形结构中，由于附加梁的旋转，两端的平面外刚度不同。在这项研究中，方程组扩展到具有非对称最终条件（例如人字形配置）的BRB。对人字形配置进行初始平面外漂移的循环载荷测试，并将结果与​​建议的方程组进行比较，该方程组根据附加梁的归一化刚度进行公式化。 （c）2016作者。约翰·威利父子有限公司出版的《地震工程与结构动力学》（c）2016作者。约翰·威利父子有限公司出版的《地震工程与结构动力学》。

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