تم في هذا البحث دراسة تأثير البوليميرات المسلحة بالألياف (FRP) على رفع قدرة التحمل الحدية للأقواس الحجرية تحت تأثير الحمولات الشاقولية؛ و ذلك باستخدام النمذجة العددية وفق طريقة العناصر المحدودة
(Finite Element Analysis) حيث تم استخدام تحليل لاخطي يأخذ بالاعتبار لاخطية المادة (Materially non-linear analysis). و قد تمت دراسة تأثير تغيير الخصائص البعدية لشريحة الـ FRP في قدرة تحمل القوس، حيث أثبت في نهاية هذه الدراسة أن استخدام سماكة صغيرة من شريحة الـ FRP، و في أماكن موضعية محددة تؤدي إلى رفع قدرة تحمل القوس بشكل كبير.
It is well known that arch is a main part of the historical structures. Therefore, many techniques are used to strengthen these arches. In this paper, Fiber Reinforced Polymer (FRP) is used to reinforce the arch under vertical loads. Materially Non-Linear Analysis (MNLA) is performed to demonstrate the behavior of the arch with and without the FRP.
On the other hand, the effect of FRP lamina thickness and length is undertaken in this research. This paper shows that a small amount of the FRP to some local areas can enhance the ultimate strength of the arch significantly.
References used
BS EN 1996-1-1:2005. EUROCODE 6- Design of Masonry Structures، Part 1-1: General rules for reinforced and unreinforced masonry structures. Brussels: CEN، 2005، 124
BEUERMAN، T.E. Inventory of Repairing and Strengthening Techniques for Masonry Arch Bridges. Master’s Thesis، University: (Universitat Politècnica de Catalunya)، Spain، 2009، 106
BJURSTROM، H.; LASELL، J. Capacity Assessment of a Single Span Arch Bridge with Backfill. Master’s Thesis، Royal Institute of Technology (KTH)، Stockholm، Sweden، 2009، 101
SANSHEZ، I.B. Strengthening of arched masonry structures with composite materials. Ph.D. Thesis، University of Minho، Department of Civil Engineering، Portugal، 2007، 232
Analysis of The results for one of the most important
experimental tests on masonry arches strengthened at their
extrados or at their intrados by fiber reinforced polymer
(FRP)strips;shows that the presence of the fibers prevents the
brittle coll
This paper makes an experimental and analytical investigation of cracks characteristics in Fiber Reinforced Polymer strengthened RC beams under different levels of sustained load and Reinforced ratio.
As the equations available for conventional RC b
Frame structures contribute to resist the seismic loads. On the other hand, frames
work efficiently to increase the ductility of buildings. Therefore, many techniques were
used to improve the resistance against lateral loads where steel shear walls
RC moment-resisting frames (RCMRFs) have commonly been used for low-to-moderate rise buildings in
seismic prone regions. RCMRFs can perform well when they are subjected to strong earthquake ground
motions if they are properly designed and detailed
The aim of this study is improving the durability of precast products of Glass Fiber
Reinforced Concrete (GRC) and in the context of sustainability applications, reduction of
cement consumption and replacement of it with green materials. This study