钢和复合桥梁管状支撑的疲劳性能

L. Gölz, U. Kuhlmann
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引用次数: 0

摘要

在钢和复合桥梁中,以实践为导向和疲劳适宜的设计对于可持续和经济的基础设施至关重要。考虑到其疲劳性能,对管状构件的焊接接头进行了严格的评估,特别是带扣板的圆形空心截面的交叉梁支撑或箱梁隔板。缝端折板焊接处为临界疲劳点。对于目前桥梁施工中使用的各种设计变体,基本不同的缺口,标准EN 1993-2或EN 1993-1-9对细节类别没有明确的规定。本文总结了一项研究项目的试验和数值结果,研究了钢和复合桥梁管状支撑三种不同的疲劳设计方案。概述了以实践为导向的设计,对执行和制造的好处,以及对prEN 1993-1-9的建议和设计建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fatigue behaviour of tubular bracings in steel and composite bridges
In steel and composite bridges, a practice-oriented and fatigue-suitable design is crucial for sustainable and economical infrastructures. The welded joints of slitted tubular elements, especially of circular hollow sections with gusset plates for cross girder bracings or box girder diaphragms, are critically assessed in view of their fatigue behaviour. The gusset plate welding at the end of the slit is the critical fatigue spot. For the currently various design variants used in bridge construction with basically different notches, there is no clear rule given regarding the detail category by the standards EN 1993-2 or EN 1993-1-9. This paper summarises the experimental und numerical results of a research project on three different fatigue design solutions for tubular bracings in steel and composite bridges. An overview of the practice-oriented design, the benefits for the execution and manufacturing as well as the proposals for prEN 1993-1-9 and design recommendations are given.
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