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Item type:Publication, Access status: with files , A statistical assessment of the fatigue strength improvement of butt joints by flush grinding(Springer, 2023-10); ; ; ; All major rules and guidelines include fatigue design (FAT) classes for flush ground butt-welded joints. These FAT classes vary between FAT110 and FAT155; however, in the majority of cases, the underlying database and specimen-related details are unclear or unknown. This study evaluates 1003 fatigue test results gathered from various literature sources and tries to relate the fatigue strength improvement to typical specimen types and test conditions. To this goal, statistical methods based on correlation analysis are employed. Next, proposals for updates of rules and guidelines for flush ground butt-welded joints made of steel are established by determining new FAT classes and a suitable slope exponent. In addition, an overview of design standards and recommendations is given and main influencing factors are discussed.Publicationtype: Journal ArticleScopus© Citations 3 84 85 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Effiziente Dimensionierung von Tragbohlen kombinierter StahlspundwändeEfficient verification of king piles of combined steel sheet walls. This contribution deals with the optimization of the stability verification according to DIN EN 1993‐1‐1 for the design of combined steel walls built‐up by H‐sections as king‐piles and infill steel sheeting. In addition to the king piles’ embedment in the soil advantage can be taken from the torsional stiffness of partially welded double king piles. Since lateral torsional buckling does not need to be considered for cross sections with a sufficient torsional stiffness, it is possible to simplify the stability verification significantly by considering the partial welding and the resulting increased torsional stiffness. In order to determine the real torsional stiffness, two large‐sized king piles with three degrees of welding were tested. Based on a numerical model the test results were simulated and a parameter study was carried out. For a given example it is shown how the consideration of partial welding allows an efficient design verification of the king piles.Publicationtype: Journal Article50