نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارشناسی ارشد، دانشکده عمران و حمل و نقل، دانشگاه اصفهان، ایران،
2 مهندسی عمران، عمران و حمل و نقل، دانشگاه اصفهان، ایران
3 عضو هیات علمی دانشکده مهندسی عمران دانشگاه اصفهان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Using plate girders as large-span beams can, on the one hand, be an alternative to rolled sections that cannot be constructed easily in every intended place and time and, on the other hand, can be utilized to withstand large loads for which a suitable rolled profile does not exist. The web of ordinary plate girders might be at risk of buckling under heavy loads. A cost-effective method to prevent the buckling of the web is to create a cold-formed press on the web. Creating press on the plate girder’s web allows the plate to enjoy more geometric stiffness and resistance around the weak axis compared to its original state. Considering this issue, there is a need to examine the capacity of the pressed plate girders meticulously. Therefore, in this study, the optimal dimensions of the press are obtained using Riks analysis, and its effect on the elastic buckling of plates and plate girders is investigated. Furthermore, the effect of press on 6-meter-long plate girders is also studied and a laboratory sample is finally made to ensure the accuracy of the results from the finite element software. Since there is slight information about the behavior of pressed plate girders, it is quite necessary to research in this regard.
کلیدواژهها [English]
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