Abstract The most common method to prevent lateral torsional buckling is the use of lateral bracings. However, when the presence of lateral bracings is considered an obstacle, side plates can be used to increase the torsional resistance of I-shaped steel beams. However, some construction difficulties will be faced when a beam with side plates is used. This study proposes a new scheme that uses side plates to prevent lateral torsional buckling, while also avoiding construction difficulties. This scheme involves a beam with side plates that do not cover an area near the beam end to provide space for bolt installation and welding of the beam flange during erection. A cover plate is then added to strengthen the beam end to prevent premature failure. The performance of the proposed beam scheme is confirmed through experimental tests. The performance of the beam designed using the proposed beam scheme is found to be satisfactory in terms of lateral torsional buckling. A finite element analysis model is then established and validated using the test results. A parametric study is conducted, and as the final result, design guidelines for this new beam scheme are proposed.

中文翻译：

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用于抗震应用的带侧板梁的新方案，以减轻施工难度

摘要 防止横向扭转屈曲最常用的方法是使用横向支撑。然而，当横向支撑的存在被认为是一个障碍时，可以使用侧板来增加工字钢梁的抗扭力。然而，当使用带侧板的梁时，将面临一些施工困难。本研究提出了一种新方案，即使用侧板防止横向扭转屈曲，同时也避免了施工困难。该方案涉及带有侧板的梁，侧板不覆盖梁端附近的区域，以便在安装期间为梁法兰的螺栓安装和焊接提供空间。然后添加盖板以加强梁端以防止过早损坏。通过实验测试证实了所提出的梁方案的性能。使用所提出的梁方案设计的梁的性能在横向扭转屈曲方面是令人满意的。然后使用测试结果建立和验证有限元分析模型。进行了参数化研究，作为最终结果，提出了这种新梁方案的设计指南。