تعد الجمل الإطارية أحد أنواع الجمل الإنشائية لمقاومة الأحمال الزلزالية ، يتم رفع كفاءة هذه الإطارات بطرائق عدة و تعتبر إضافة صفائح معدنية ضمن مجاز الإطار لتعمل كجدران قص إحدى هذه الطرق.
يهدف هذا البحث إلى دراسة أثر تقوية الإطارية البيتونية بإضافة صفائح معدنية كجدران قص ضمن مجاز الإطار. تم في هذه الدراسة استخدام التحليل العددي باستخدام نظرية العناصر المحدودة (Finite Element Method) و اعتماد التحليل اللاخطي الذي يأخذ بعين الاعتبار لاخطية المادة و أثر التشوهات الكبيرة (Geometrically and Materially Non-Linear Analysis, GMNLA). تم في هذا البحث استخدام طريقة الدفع الجانبي المتزايد (Pushover) لدراسة تصرف الإطار البيتوني المملوء بصفيحة معدنية على مقاومة الأحمال الجانبية، كما تم دراسة أثر سماكة الصفيحة في هذه المقاومة. إضافة إلى ذلك تمت دراسة أثر صنع فتحة في هذا الإطار و أثر ذلك في المقاومة من حيث بعد الفتحة و تموضعها.
يبين هذا البحث أن تقوية الإطارات البيتونية بجدار قص معدني مع أو بدون فتحة و بسماكة صغيرة قد أدى إلى زيادة المقاومة بشكل كبير بالإضافة إلى خفض الانتقال.
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 are considered
to be one of these ways.
This research aims to study the effect of inserting steel shear wall on the resistance of
the reinforced concrete frame against earthquake loads. In this study, Finite Element
Method (FEM) using Geometrically and Materially Non-Linear Analysis (GMNLA) was
performed. Pushover analysis is used to explore the behavior of the steel plate in-filled
reinforced concrete frame against lateral loads. Moreover, the effect of plate thickness was
undertaken. On the other hand, an opening is made in this plate. Then, the influence of the
position and dimension of this opening on the resistance was observed.
This study shows that using a steel plate shear wall with or without opening can
enhance the resistance to seismic loads significantly together with the deflection decrease.
References used
ABAQUS, Version 6.11 (2011) . ABAQUS/Standard User`s Manual, ABAQUS Inc USA
Anil O. and Altin S " An experimental study on reinforced concrete partially infilled frames ", Engineering Structures, (2007). 64, 449-460
Choi R . Park G " Cyclic Loading Test for Reinforced Concrete Frame with Thin Steel Infill Plate ", Journal of Engineering Structures, (2011). 137:654-664
Most existing structures are not designed with cod
requirements to meet seismic risk, Therefor methods for
strengthening and stiffening existing buildings are important .
This study is comparing between strengthening by adding shear
wall or by ad
Frame structures contribute to resist the seismic loads. On the other hand, many techniques were used to improve the resistance against lateral loads where steel shear walls are considered to be one of these ways.
This research aims to study the eff
Structural Frame system is considers as an earthquake resisting structural
systems. On the other hand, many techniques were used to improve the
resistance against lateral loads. where Steel Plate Shear Wall fixed within
frame span is one of those
This research investigates the behavior of RC frames
strengthened using steel jacket technique and the impact of using
this technique on the frame specifications was examined in terms of
rigidity, ductility and resistance.
Pushover method or method of nonlinear static analysis is considered the latest and best way to study and evaluate the buildings under effect of seismic load. The method is based on the study of deformation occurring in the building, formation of pl