تاريخ مجلس الدراسات العليا

2021-02-14

اسم الطالب

عدي حسن فوزي

ملخص الرسالة

Many lateral force resisting systems are used in the structures, but there is no definite answer which implies to how the most suitable earthquake-resistant structural system is to be chosen for each type of earthquake severity, type of soil, and height of buildings. This study was conducted to choose the most suitable seismic structural system for many different cases. The variety of cases depended on the parameters that affect the responses of the structures when exposed to such type of loading. The studied parameters were the seismic hazard level, soil classification and the structure height. Three lateral force resisting systems were tested, the bearing wall system using special reinforced concrete shear walls, the dual system of special reinforced concrete shear walls and moment-resisting frames and special moment-resisting frame system. The dynamic and static analysis methods were applied using (ETABS) software to check the responses of the structures in 81 cases. Responses critical values were grouped, compared, and checked according to codes limitations. The results were grouped into three tables to show the most suitable seismic structural system in each case. The results showed that committing to ASCE 7-10 permitted systems implies that each structural system can be the most suitable system according to the case in hand. However, the special reinforced concrete-moment resisting frame system tends to be the most suitable system in most of the cases except in soft clay soil sites for structures of risk category 4 in high seismic hazard sites it didn't satisfy the drift limitation, it can still the most suitable system but it needs to be modified by raising the stiffness or using the bracing or to turn the structure into a dual system. The dual system tends to be the most suitable in all cases and especially in soft clay soil sites of high seismic hazard and for the structures of risk category 4.through this methodology the limit that the special reinforced concrete moment resisting frames can provide stability and safety is specified, and when it should be modified to satisfy the limitations taking into consideration that it doesn't conflict with ASCE 7-10 permission to use this system for a non-limited height.