Abstract This paper presents an experimental and numerical study of stainless steel plate girders with non-rigid end posts. Stereo vision digital image correlation was employed to continuously measure the deformed shape and the corresponding three-dimensional displacements of the lean duplex specimen, which enabled the full deformation history of the whole web of the plate girder to be traced. Following the experimental investigation, a finite element study was conducted and validated. Subsequently, a sensitivity analysis was performed to investigate the effectiveness of all design parameters in order to give directions for improvement. The comparisons showed that the European code leads to acceptable strength predictions, yet further improvements remain possible to more accurately predict the contribution of the flange, and to include the contribution of the stiffness of the non-rigid end post to this instability phenomenon.

中文翻译：

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非刚性端柱不锈钢板梁的剪切屈曲

摘要 本文介绍了非刚性端柱不锈钢板梁的实验和数值研究。采用立体视觉数字图像相关连续测量精益双联试样的变形形状和相应的三维位移，从而能够追踪整个板梁腹板的完整变形历史。在实验调查之后，进行了有限元研究并进行了验证。随后，进行了敏感性分析以研究所有设计参数的有效性，以便给出改进方向。比较表明，欧洲规范导致了可接受的强度预测，但仍有可能进一步改进以更准确地预测法兰的贡献，