کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4919993 1429079 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Discrete element analysis of gothic masonry vaults for self-weight and horizontal support displacement
ترجمه فارسی عنوان
تجزیه و تحلیل عنصر گسسته از غرفه های سنگ گچ برای وزن خود و جابجایی پشتیبانی افقی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
The paper investigates how the deviation of the centreline from the semi-circle influences the mechanical behaviour of gothic masonry vaults. The geometry of the vaults is quantified by a scalar parameter. The present work deals with the force-transmitting system, crack opening magnitude and pattern. Furthermore, the magnitude of the so-called threshold support displacement and the magnitude of the support displacement at first failure is also analysed. Masonry structures consist of separate blocks, each of which can move independently from each other, which makes the calculation process rather complicated. The Discrete Element Method (henceforth DEM) is used to solve the highly nonlinear problem. In the chosen method the equations of motion are solved by the central difference scheme. Approximate boundary conditions are applied, which assume symmetry in the analysed structures. The main findings of the work are: barrel vaults with pointed shape become statically determinate at a higher support displacement level than barrel vaults with semi-circular centreline. In the case of large deviation from the semi-circle or at large support displacement level shear failures can appear in gothic masonry barrel and cross vaults, which could decrease the magnitude of feasible horizontal support displacement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 148, 1 October 2017, Pages 195-209
نویسندگان
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