Scale Models Design of Stiffened Plates Under Longitudinal Compression Considering Collapse Modes and Number of Stiffeners
Scale Models Design of Stiffened Plates Under Longitudinal Compression Considering Collapse Modes and Number of Stiffeners
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考虑倒塌模式和加强筋数量的纵向压缩加筋板的比例模型设计
DOI：
10.17736/ijope.2021.ty13
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发表时间：
2021-09
影响因子：
0.8
通讯作者：
Deyu Wang
中科院分区：
文献类型：
--
作者：
Hongyuan Mei;Deyu Wang
通过对加筋板的破坏模式和加劲肋数目的分析，研究了纵向受压加筋板的相似准则。采用板长细比、整体长细比、柱长细比、腹板扭转长细比等5个无量纲数作为相似准则，考虑了局部壁板的极限强度和加筋板的典型破坏模式。模型在初始屈服状态和极限状态下的相对应力和应变、相对应力和相对应变曲线以及坍塌模式被用来区分缩尺模型和原型的相似性。通过非线性有限元分析，验证了不同屈服应力下模型的相似准则。结果表明，相似准则对加筋板小比例模型的设计具有一定的指导意义。
The similitude criteria of stiffened plates subjected to longitudinal compression are studied based on the analysis of the collapse modes and the number of stiffeners. Five dimensionless numbers, including the plate, overall, column, web, and torsional slenderness ratios, are applied as similitude criteria, accounting for the ultimate strength of local panels and the typical collapse modes of stiffened plates. The relative stress and corresponding strain of models in the initial yielding and ultimate limit states, the relative stress and relative strain curves, and the collapse modes are used to distinguish the similitude of scale models and a prototype. The similitude criteria of models with different yield stresses are verified by nonlinear finite element analysis. The results indicate that the similitude criteria are useful to guide the design of small-scale models of stiffened plates.