Śledziewski Krzysztof, Górecki Marcin, Gajewski Jakub, Rogala Michał
Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40, 20-618 Lublin, Poland.
Faculty of Mechanical Engineering, Lublin University of Technology, ul. Nadbystrzycka 38, 20-618 Lublin, Poland.
Materials (Basel). 2024 Dec 12;17(24):6079. doi: 10.3390/ma17246079.
Recently, steel girders with sinusoidal corrugations have become increasingly popular compared to those with traditional flat webs. This paper presents the second part of the research on the application of corrugated plates with different sinusoidal profiles as webs in girders. Parametric studies have been carried out in both linear and nonlinear domains, based on a representative numerical model developed and validated by experimental results. The research focused on the influence of the sinusoidal shape of the web on the shear capacity of the girders and the ultimate failure mode. The analyses were carried out using Abaqus software. Based on the results of the numerical analyses, it was concluded that increasing the wavelength of the sinusoidal wave decreases the ultimate shear capacity of the girders. This parameter also influences the failure mode. The results show that the wave amplitude has a small effect on the critical capacity. However, the amplitude influences the increase in the post-critical load and the size of the plastic zones located in the webs during the final phase of failure. With regard to the geometric parameters of the web, it was found that increasing the web thickness significantly improves the performance of the girders, while the web height has a negligible effect. It was also shown that the design guidelines in Eurocode 3 are very conservative in terms of estimating the shear buckling capacity of beams with sinusoidal corrugated webs and significantly underestimate the values.
最近，与传统平腹板钢梁相比，带正弦波纹的钢梁越来越受欢迎。本文介绍了关于将具有不同正弦波形的波纹板用作梁腹板的应用研究的第二部分。基于一个通过实验结果开发并验证的代表性数值模型，在线性和非线性领域都进行了参数研究。该研究聚焦于腹板的正弦形状对梁抗剪承载力以及最终破坏模式的影响。分析使用Abaqus软件进行。基于数值分析结果得出，增加正弦波的波长会降低梁的极限抗剪承载力。该参数也会影响破坏模式。结果表明，波幅对临界承载力影响较小。然而，波幅会影响临界后荷载的增加以及破坏最后阶段腹板中塑性区的大小。关于腹板的几何参数，发现增加腹板厚度能显著改善梁的性能，而腹板高度的影响可忽略不计。研究还表明，欧洲规范3中的设计指南在估算带正弦波纹腹板梁的剪切屈曲承载力方面非常保守，且显著低估了该值。
