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العنوان
Comparative Study in the Design of Reinforced Concrete Footings \
المؤلف
Ibrahim, Mariana Nabil.
هيئة الاعداد
باحث / مريانا نبيل ابراهيم
maroo_moke@hotmail.com
مشرف / فتحي عبد ربه
مناقش / محيى الدين صلاح شكري
مناقش / خالد السيد جعفر
الموضوع
Reinforced Concrete.
تاريخ النشر
2014.
عدد الصفحات
195 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة المدنية والإنشائية
تاريخ الإجازة
01/07/2014
مكان الإجازة
جامعة الاسكندريه - كلية الهندسة - الهندسة الانشائية
الفهرس
Only 14 pages are availabe for public view

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Abstract

The structure loads are transmitted to the underlying soil strata through a suitably designed foundation. Therefore, the foundation of a structure is considered the most crucial structural element amongst all structural elements. The foundation may be classified in to two main categories, shallow and deep foundations. Shallow foundation comprises isolated footings, reinforced concrete raft foundation, and combined footings. The research study presented in this thesis is concerned with isolated footings. The design of isolated column footings is completed through, geotechnical and structural design. Geotechnical design is the responsibility of geotechnical engineer, while structural design is the responsibility of structure engineer, so, the input research into isolated column footings comes from two different disciplines, geotechnical and structure. This may be one of the causes that attributed to limited research input to the subject. The research presented in this thesis highlighted the importance of the structural design of the isolated column footings, which is based on empirical rules, in nature. Furthermore, calculations of bending moments and shearing forces induced in footings are based on the rules of beams theory. The application of beam theory 011 relatively rigid isolated footings is questionable. Also, punching theory was developed on relatively thin floor slab. Even thought, the theory is implemented for the calculation of punching shear in footings. Two different mechanism of punching are reported one in relatively thin floor slabs and the other on column footings. Even though the same rules are unplemented experimental research on isolated column footings is scarce, due to the difficulties involved in the set-up of the laboratory model and the cost of experiments. This may be another cause of the limited research input in the subject. The work presented in this thesis starts with reviewing of the previous work, followed by a comparison between predicted ultimate loads, obtained ’from the implementation of codes provisions on isolated column footings, and the documented measured failure loads. The measured failure loads of isolated column footings were obtained from surveying the available published work dealing with the subject. Different code provisions EGP 203-11, ACI 318-08, BS8110.1-1997 and EC2-2004 are considered in the prediction of ultimate loads. It is difficult to criticize code provisions, but a trial was given to adjust some code provisions during the correlation process . erween predicted and measured ultimate loads. The structural design of the footings, most often, is controlled by punching of column through the footing. So the most attention is given :0 the punching code provisions. Relative, little attention was paid to the shear reinforcement ill footings, due to the limited experimental work on footings with shear reinforcement.