يتناول هذا البحث دراسة تحليلية لسلوك وصلات جائز - عمود طرفية تحت تأثير احمال
زلزالية. تمت دراسة هذا السلوك تحت تأثير بارامترين, هما الحمولة المحورية على العمود
و تطويق منطقة العقدة بالأساور, حيث تمت محاكاة و نمذجة لثلاث عينات وصلة جائز-
عمود طرفية, باستخدام برنامج عناصر منتهية متطور ( 11 ANSYS ), و تمت المعايرة
و التحقيق مع الدراسة التجريبية المرجعيىة (2001 Bitar, M.A) و كانت نتائج متوافقة
و متجانسة مع السلوك العام للعينات تحت تأثير حمولة دورية محاكية للحمولات الزلزالية.
بينت الدراسة اهمية و اثر وجود الحمولة المحورية, تطويق منطقة العقدة بالاساور في تحسين
سلوك الوصلات و تأخير ظهور التشققات في العقدة و هو الأمر المرغوب به عند تصميم
العقد في الإطارات المقاومة للزلازل, و يزيد من صلابة الوصلة على الدوران و الانتقال, كما
يخفّض قيمة القص في العقدة و يجعل توزعه أكثر انتظاما.
This research deals with analytical study of exterior Beam-Column
connections behavior under seismic load.
Tow parameters were considered: axial load on the column and
confinement of joint region with stirrups.
Ansys program was used to analytical study of three types of exterior
Beam-Column connections under cyclic load.
The results were shown a good agreement with general behavior of
three types.
The analytical results indicate that the tow parameters will improve
the behavior of the connections delay cracking at joint core and
increasing connection stiffness in rotation and displacement with
decreasing shear value at joint.
References used
ACI 352R-02,”Recommendations for Design of Beam- Column Connections in Monolithic Reinforced Concrete Structures”, American Concrete Institute, ACI-ASCE Committee 352, 2002
ACI-ASCE committee 352, "Recommendations for Design of Beam- Column Joints in Monolithic Reinforcement Concrete Structures", ACI Journal, Proceedings Vol. 82, No. 3, May-June 1985, pp:266-283
ACI 318-02, "Building Code Requirements for Structural Concrete", American Concrete Institute, 2002
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
In this research, we discussed an analytical
study of the seismic behavior of an internal joint, and we improved
the plastic response of the joint after observing the effect of the
concrete encasement to the column’s steel section along the
connection area.
This research is concerned in modeling the problem of sloshing in
moving cylindrical containers in ANSYS program where we model
the problem on a partially filled cylinder then we find the resonant
frequencies in addition to study the interaction between the cylinder
and the fluid.
Flush end-plate beam-to-column joints often subjected to a combination of bending
and axial forces .The level of axial forces in the joint may be significant in case of: sway
frames under horizontal loads, pitched roof portal frames and irregular f
Our Paper is a laboratory modeling research to evaluate the efficiency of finite element model in emulation the behavior of R.C. beams with shear deficiencies (ultimate load, mechanism of cracking and failure, load-deflection behavior) strengthened w