کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6750397 1430683 2018 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Distortion analysis of non-prismatic composite box girders with corrugated steel webs
ترجمه فارسی عنوان
تجزیه و تحلیل اعوجاج از کانال های جعبه کامپوزیت غیر منشوری با شبکه های فولادی قرقره
کلمات کلیدی
ستون های جعبه های کامپوزیتی با ورق فولادی موج دار، اعوجاج، غیرشخصی تجزیه و تحلیل عنصر محدود، فاصله دیافراگم،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
In this study, the distortion effect of non-prismatic composite box girders with corrugated steel webs (CBGCSWs) is theoretically analysed under eccentric loads during the elastic stage. Considering the mechanical properties of corrugated steel web, a governing differential equation for distortion is derived for non-prismatic CBGCSWs. The differential equation is solved using the Newmark method to obtain the distortional warping normal stresses of angular points. The feasibility of the proposed theoretical method is validated by the finite element (FE) method. The proposed method is then applied to examine the effects of the number of diaphragms (N), girder length (L), girder width (b), shortest girder height (hmin) and girder height ratio (ξ) on the maximum ratio of distortional warping normal stress to longitudinal bending normal stress (distortion-to-bending stress ratio, ζ) of non-prismatic CBGCSWs. Based on the results of the parametric study, a diaphragm spacing equation is developed for determining the diaphragm spacing of non-prismatic CBGCSW bridges to reach the desired distortion-to-bending stress ratio. The presented equation can be further used as a reference to design the diaphragm spacing of this type of bridge.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Constructional Steel Research - Volume 147, August 2018, Pages 74-86
نویسندگان
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