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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Performance of a damage-protected beam-column subassembly utilizing external HF2V energy dissipation devices
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Performance of a damage-protected beam-column subassembly utilizing external HF2V energy dissipation devices

机译：使用外部HF2V能量消散装置的受损害保护的梁柱组件的性能

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摘要

Ductile-jointed connections, which generally require some form of supplementary energy dissipation to alleviate displacement response, typically employ mild steel energy dissipation devices. These devices run the risk of low-cycle fatigue, are effective only for peak cycles that exceed prior displacements, are prone to buckling, and may require replacement following an earthquake. This study presents an experimental investigation employing an alternative to mild steel: a high force-to-volume (HF2V) class of damper-based energy dissipation devices. Tests are performed on a near full-scale beam-column joint subassembly utilizing externally mounted compact HF2V devices. Two configurations are considered: an exterior joint with two seismic beams and one gravity beam framing into a central column, and a corner joint with only one seismic beam and one gravity beam framing into a column. Quasi-static tests are performed to column drifts up to 4%. The experiments validate the efficacy of the HF2V device concept, demonstrating good hysteretic energy dissipation, and minimal residual device force, allowing ready re-centring of the joint. The devices dissipate energy consistently on every cycle without the deterioration observed in the yielding steel bar type of devices. The effectiveness of the HF2V devices on structural hysteretic behavior is noted to be sensitive to the relative stiffness of the anchoring elements, indicating that better efficiency would be obtained in an embedded design.
机译：通常需要某种形式的补充能量耗散以减轻位移响应的延性接头连接通常采用低碳钢耗能装置。这些设备存在低周疲劳的风险，仅对超过先前位移的峰值周期有效，容易弯曲，并且可能在地震后需要更换。这项研究提出了一项实验研究，该研究采用了低碳钢的替代品：一种基于阻尼器的高耗能量（HF2V）类消能装置。使用外部安装的紧凑型HF2V设备在接近满量程的梁柱接头子组件上进行测试。考虑两种配置：具有两个地震梁和一个重力梁的框架的外部节点，并组合成一个中心柱；和只有一个地震梁和一个重力梁的框架的角节点，并且并入一个柱体。进行准静态测试以使色谱柱漂移最多达到4％。实验验证了HF2V装置概念的有效性，证明了良好的磁滞能量耗散和最小的装置残余力，可以使关节重新定心。该设备在每个循环中始终耗散能量，而不会在屈服的钢筋类型的设备中观察到劣化。注意到HF2V装置对结构滞后性能的有效性对锚固元件的相对刚度敏感，表明在嵌入式设计中将获得更好的效率。

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