Search In this Thesis
   Search In this Thesis  
العنوان
Philosophy of international seismic codes and the comparison with the Egyptian code for concreter buildings /
المؤلف
Al-Sakkar, Mahmoud Abdul-Fattah Ali.
هيئة الاعداد
باحث / محمود عبدالفتاح على الصقار
مشرف / محمد نجيب أبوالسعد
مشرف / أحمد أمين غالب
مناقش / أمين صالح على صالح
الموضوع
Building, Iron and steel. Steel, Structural. Earthquake resistant design. Structural analysis (Engineering) Buildings, Reinforced concrete.
تاريخ النشر
2017.
عدد الصفحات
364 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة المدنية والإنشائية
تاريخ الإجازة
01/04/2018
مكان الإجازة
جامعة المنصورة - كلية الهندسة - Structural Engineering
الفهرس
Only 14 pages are availabe for public view

from 364

from 364

Abstract

After 1992 earthquake and the destructive effects that cause, Egyptian scholars decided to design new structures to resist earthquakes. The Egyptian code was issued since 1993 including seismic loads based on UBC American code. 2003 and later versions, new versions of the code were issued based on the Eurocode8. Although the code is based on the Eurocode8, it extracts some criteria from UBC97. Changing the Egyptian code from the American approach to the European approach arises the question: which one is the best, or in other words what are the advantages and disadvantages in each code to adopt and to avoid respectively. A fair comparison between the Egyptian code and other international seismic codes is necessary to answer the question. Three international seismic codes UBC97,IBC which refers to ASCE07 in concrete seismic design and Eurocode8 were selected to perform this comparison since these codes are being adopted in a lot of countries around the world. In the Comparison section, the research introduces comparison between codes in a rational way, starting by defining different type of earthquake loading, which one to use, the method to apply them over the structure, whether it should be applied at orthogonal directions simultaneously or to apply them in each direction separately. the vertical and horizontal distribution of the seismic force among floors and elements were compared. the model requirements before running the model and second order analysis required to be included in analysis were cleared. main checks of the model after run specially in the response spectrum case and the scaling issue required by codes were figured out. The research includes also the criteria to be checked after run like drift, displacement, torsional irregularity problem and building separation issue. The comparison section ends with case to ignore seismic force over small structures. Sixteen ETABS models were completed to study the difference between IBC2016-ASCE07 2010-, UBC97, Eurocode8 and ECP2012 for ten floors, twenty, forty and eighty floors concrete tower numerically. The seismic zone was selected to suit von majority of zones in Egypt and Arabic world. the soil was selected as medium to stiff soil. the system was selected as Concrete-Wall-Bearing System.
The conclusion section addresses each topic covered in the comparison section and in Study cases section and mentions the advantages and disadvantages in all of them, and what are the recommendations which should be applied to each of them. The comparison of the studied codes showed that the Egyptian code has inconsistency in results in terms of seismic base-shear and story-shear and story responses like story drift ratio due to different load cases and different load combinations.