Abstract Built-up battened columns are lightweight and have a larger moment of inertia when compared with columns made by a single profile. However, these columns have shown poor seismic performance during past earthquakes. In this study, experimental and numerical investigations were focused on the seismic performance of these columns. A full-scale built-up battened column was subjected to quasi-static cyclic loading and its response was recorded. Furthermore, 81 built-up battened columns were simulated in ABAQUS software. The effects of batten spacing, batten thickness, chord distance, and axial force on the cyclic response of simulated columns were investigated. The obtained results indicated that the bulging of chord webs together with the local buckling of chord flanges were the main reason for the failure of columns. Besides, in all columns, the maximum stress in chords was almost twice larger than the maximum stress in battens. Furthermore, an increase in the batten thickness or a decrease in the batten spacing slightly increased the ultimate load of columns. Columns with a thicker batten exhibited a slightly smaller plastic deformation. The displacement ductility ratios of the built-up battened columns were all less than two even when they were subjected to an axial compression ratio smaller than 0.2. It was also observed that, in all columns, the ratio of ultimate load to the effective yield strength was less than 1.4.

中文翻译：

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组合板条柱地震反应的试验和数值研究

摘要 与单一型材制成的柱相比，组合板条柱重量轻，转动惯量更大。然而，这些柱子在过去的地震中表现出较差的抗震性能。在这项研究中，实验和数值研究的重点是这些柱的抗震性能。全尺寸组合板条柱承受准静态循环载荷并记录其响应。此外，在 ABAQUS 软件中模拟了 81 个组装的板条柱。研究了板条间距、板条厚度、弦距和轴力对模拟柱循环响应的影响。所得结果表明，弦杆腹板的鼓胀和弦杆翼缘的局部屈曲是柱失效的主要原因。此外，在所有列中，弦的最大应力几乎是板条最大应力的两倍。此外，板条厚度的增加或板条间距的减小会略微增加柱的极限荷载。具有较厚板条的柱表现出略小的塑性变形。即使在轴压比小于0.2的情况下，组合板条柱的位移延性比均小于2。还观察到，在所有柱中，极限载荷与有效屈服强度之比均小于 1.4。具有较厚板条的柱表现出略小的塑性变形。即使在轴压比小于0.2的情况下，组合板条柱的位移延性比均小于2。还观察到，在所有柱中，极限载荷与有效屈服强度之比均小于 1.4。具有较厚板条的柱表现出略小的塑性变形。即使在轴压比小于0.2的情况下，组合板条柱的位移延性比均小于2。还观察到，在所有柱中，极限载荷与有效屈服强度之比均小于 1.4。