Scale model design for the stiffened plate subjected to combined longitudinal compression and lateral pressure considering collapse modes

Scale model design for the stiffened plate subjected to combined longitudinal compression and lateral pressure considering collapse modes
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考虑倒塌模式的纵向压缩和侧向联合压力加筋板的比例模型设计

DOI:
10.1016/j.oceaneng.2021.110289
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发表时间:
2022-01
期刊:
影响因子:
5
通讯作者:
Deyu Wang
Deyu Wang
中科院分区:
工程技术2区
文献类型:
--
作者:
Hongyang Ma;Hongyuan Mei;Deyu Wang

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基于破坏模式,探讨了加筋板在纵压和侧压共同作用下的相似准则。所提出的方法假设板、整体、梁柱、腹板和扭转细长体将是破坏模式的域。除了这些比值外,还采用了一个无量纲的侧压力参数来设计作用在实验室试验缩尺模型上的侧压力大小。同时,基于薄壁梁理论,提出了侧压力的比例因子,验证了侧压力无量纲参数的有效性。通过归一化极限应力验证了原型和缩尺模型的相似性。数值结果表明,相似准则可以为组合荷载作用下的缩尺模型设计提供合理的依据。
The similitude criteria of stiffened plates subjected to combined longitudinal compression and lateral pressure are explored based on the collapse modes. The proposed approaches assume the plate, overall, beam-column, web and torsional slenderness would domain the collapse modes. Apart from these ratios, a non-dimensional parameter of lateral pressure is used for designing the magnitude of lateral pressure acting on the scale models for experiments in the laboratory. Meanwhile, the scaling factors of lateral pressure are proposed based on the thin-walled beam theory, which is used to verify the validation of the dimensionless parameter of lateral pressure. The similitude of the full-scale prototype and scale models are verified by the normalized ultimate stress. In view of the numerical results, the similitude criteria could give a reasonable design of scale models under the combined loads.
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