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Register a new userThe Structural Evaluation to the Cracked Concrete Building
التقييم الإنشائي للأبنية البيتونية المسلحة المتصدعة
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Added by
Tishreen University ورقة بحثية
Publication date
2015
fields
Structural Engineering
and research's language is
العربية
Authors
عبد الحميد كيخيا( باحث )
Created by
Shamra Editor
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تطورت في الأونة الأخيرة نظريات و أساليب التقييم الفني و الإنشائي للأبنية المتصدعة لأسباب مختلفة (الكوارث الطبيعية ، الحروب ، القدم .....الخ) ، و ذلك بسبب الحاجة الماسة لعملية التقييم الصحيحة ، و الوقوف على حقيقة الوضع الإنشائي و الوظيفي للبناء ، و اتخاذ القرار المناسب . يتضمن البحث توضيح أهمية عملية التقيم الإنشائي للأبنية ، و أسس و معايير تصنيف الأبنية المتصدعة حسب وضعها الإنشائي و الفني ، و سبل اتخاذ القرار المناسب لكيفية التعامل مع الأبنية المتصدعة . تعتبر عملية التقييم الفني و الإنشائي للأبنية البيتونية المسلحة ، عملية فريدة من نوعها لا تتكرر و لها خصوصية لارتباطها بمجموعة كبيرة من المتحولات (بنية و طبيعة مادة البيتون ، الجملة الإنشائية ، شدة و طبيعة التصدعات و الانهيارات ....الخ ) لذلك فإن عملية التقييم تقوم على مجموعة من القياسات و الاختبارات و المشاهدات ، لذلك فإن الخبرة الشخصية للمهنس تلعب دورا مهما في عملية التقييم . يتضمن البحث إعداد منهجية علمية لعملية التقييم ، و تصميم برنامج حاسوبي للقيام بعملية التقييم الفني و الإنشائي للأبنية المتصدعة ، و ذلك للحد من الدور الشخصي و المزاجي للمهندس في عملية التقييم ، كما يتضمن تطبيق على حالات واقعية.
Recently, the methods and theories of the structural and technicalevaluation for cracked buildings have been developed because of different reasons (Natural disasters, wars, the oldness… etc.) That was due to urgent need for right evaluation process, understand the structural and function status of the building and make the right decision. The research includes the clarification of the importance of building structural evaluation in addition to the basis and criteria of cracked buildings classification regarding their structural and technical status. The structural and technical evaluation for concrete building is considered as nonrepetitive unique process, which has its particularity due to its link with large group of indicators ( concrete natural and structure- structural system - the natural and intensity of failures and cracks …etc.) Therefore, the evaluation process based on groups of measurements, tests and views. The personal experience of the engineer has an important role at evaluation process. The research includes the preparation of scientific methodology to evolution process and designing structural and technical evaluation software to evaluate cracked buildings and limit the personal and mood role of the engineer during evaluation process. In addition to that, the software will include applications from the real situations.
References used
Federal Emergency Management Agency (FEMA) 2000 "FEMA 356-Seismic Rehabilitation Pre-standard" Washington DC USA
Atherton library 2009 "FEMA 356 Life Safety Building Performance-Evaluation & PML Analysis" California USA
The Islamic university of Gaza 2010 "Expert system for structural evaluation of reinforced concrete buildings in Gaza strip using fuzzy logic" Master degree research Gaza Palestine
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This study has provided an accurate description of the traditional nonlinear
static analysis and modal pushover analysis and then these two analyzes
applied for a set of concrete buildings.
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Conducted detailed comparison for the value of cross section i.e. Moments, shear and axial forces in beams and columns of first and second floor frame in relationship of bracing shape. It concludes thatX and V bracing have large effect on the concrete tall buildings frame, as well as in the cases of improving the efficiency of existing R/C frame buildings.
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
astic hinge in elements, in addition to the redistribution of internal forces in building elements under the effect of earthquake loads. Pushover method was applied to evaluate the Model of residential buildings in Latakia suburb Tabiyat, who has designed and implemented before the issuance of the code which earthquake load considered.
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This research studies the behavior of the soft story in RC structures using
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hieght of story than the rest st
orys, was conducted static analysis using
Nonliner pushover analysis and dynamic analysis using Nonliner time
history analysis
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