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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Experimental study on the bidirectional inelastic deformation capacity of U-shaped steel dampers for seismic isolated buildings
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Experimental study on the bidirectional inelastic deformation capacity of U-shaped steel dampers for seismic isolated buildings

机译：U形钢阻尼器隔震双向双向弹塑性变形试验研究

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Hysteretic dampers are used to dissipate earthquake-induced energy in base-isolated structures by acquiring inelastic deformations, rendering their hysteretic behavior of vital importance. The present paper focuses on investigating the behavior of U-shaped steel dampers under bidirectional loading; this is significantly different from their corresponding uniaxial behavior. Two main sets of loading tests on full-scale specimens are conducted in this regard: (i) quasi-static tests with simple histories and (ii) dynamic tests with realistic loading histories. Based on the results obtained in the quasi-static tests, an interaction curve that accounts for the reduction of the cyclic deformation capacity is proposed. However, the fidelity of this relation must be assessed under loading conditions similar to those of a seismically isolated structure subjected to an earthquake, which represents the goal of the second set of tests. The results of the dynamic tests validate the proposed interaction curve for estimating the deformation capacity of U-shaped steel dampers under bidirectional loading. Copyright (c) 2015 John Wiley & Sons, Ltd.
机译：滞后阻尼器通过获取非弹性变形来消散基础隔震结构中的地震感应能量，因此使其滞后性能至关重要。本文重点研究双向荷载作用下U型钢阻尼器的性能。这与它们相应的单轴行为明显不同。在这方面，对满量程样品进行了两套主要的载荷试验：（i）具有简单历史的准静态试验和（ii）具有现实载荷历史的动态试验。根据准静态测试的结果，提出了一种相互作用曲线，说明了循环变形能力的降低。但是，必须在类似于遭受地震的地震隔离结构的载荷条件下评估这种关系的逼真度，这是第二组测试的目标。动态测试结果验证了所提出的相互作用曲线，以估计双向荷载下U型钢阻尼器的变形能力。版权所有（c）2015 John Wiley＆Sons，Ltd.

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