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【目的】为研究H型钢柱在水平冲击下的动力响应特性。【方法】自制冲击试验装置并开展考虑轴压比的水平冲击试验，并结合有限元仿真分析，系统探讨轴压比与撞击位置对钢柱位移场演化及动力响应的影响。【结果】试验结果表明，轴压比的增加显著影响钢柱的位移响应，导致最大位移和残余位移的增加。撞击位置为非对称撞击下，钢柱位移场呈现三阶段演化过程：塑性铰移行阶段、混合运动阶段和支座转动阶段。【结论】基于刚塑性理论，该文建立适用于不同撞击位置的钢柱位移场计算模型。研究结果为H型钢柱在水平冲击作用下的抗冲击设计提供理论依据。
Abstract：[Objective] To investigate the dynamic response characteristics of H-shaped steel columns under horizontal impact. [Methods] This study conducted horizontal impact tests on steel columns with different axial compression ratios using a self-designed impact test device. Combined with finite element simulation analysis, the effects of axial compression ratio and impact location on the displacement field evolution and dynamic response of the columns were systematically studied. [Results] The test results indicate that an increase in axial compression ratio significantly affects the displacement response of the steel columns, leading to an increase in both the maximum displacement and residual displacement. Under asymmetric impact conditions, the displacement field of the steel column exhibits a three-stage evolution process: plastic hinge migration stage, mixed motion stage, and support rotation stage. [Conclusion] Furthermore, a displacement field calculation model for steel columns under different impact locations was established through theoretical derivation. The findings provide a theoretical basis for the impact-resistant design of H-shaped steel columns under horizontal impact.
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基本信息:
DOI：10.11857/j.issn.1674-5124.2025030019
中图分类号:TU391
引用信息:
[1]代春香,夏林海,李三雁,等.水平冲击下H型钢柱的动力响应研究及计算方法[J].中国测试,2026,52(07):37-46+54.DOI:10.11857/j.issn.1674-5124.2025030019.
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