Abstract: The theoretical lateral-torsional buckling solutions for I-beams utilized in many design specifications may the overestimate lateral torsional buckling (LTB) resistance when significant shear is present due to web distortion. ...

Abstract: Cross-frames, which primarily serve as stability braces in steel I-girder systems during erection and deck construction, are susceptible to load-induced fatigue problems in finished composite structures if not properly ...

Abstract: Guidance for the lateral-torsional buckling behavior of singly-symmetric, nonprismatic (stepped flanges) sections are often absent from design specifications or are overly simplified. This paper presents simplified design ...

Abstract: Despite the historical tendency toward proportioning and spacing braces based on rules of thumb, modern specification guidance stipulates that cross-frame design be supported with a rational analysis, which is commonly ...

Abstract: Many of the current fatigue design specifications for cross frames, especially those in composite steel bridge systems, have primarily been based on computational studies and component-level laboratory experiments. To fully ...