کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
511344 865840 2012 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An iterative form-finding method for antifunicular shapes in spatial arch bridges
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
An iterative form-finding method for antifunicular shapes in spatial arch bridges
چکیده انگلیسی

This paper presents a new iterative method for finding antifunicular out-of-plane shapes for spatial arch bridges. For a given set of loads, this is the warped geometry that results in an equilibrium state free from bending stresses, i.e. simply under axial forces. These shapes appear when out-of-plane loads act upon the arch, for example, when the deck is curved in plan. A detailed formulation with two alternative algorithms is presented that solves the most generalised case, where unsymmetrical bridges with clamped ends and non-linear behaviour can be considered. An uncoupled formulation has also been developed, in order to minimise internal forces, in both vertical and leaning plane arches. The method can be used both for upper and lower deck arch bridges. It can also be easily adapted for tension elements or cables.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volumes 108–109, October 2012, Pages 42–60
نویسندگان
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