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Effect of the existence of soft story on the seismic response of RC buildings

تأثير وجود الطابق اللين على الإستجابة الزلزالية للأبنية البيتونية المسلحة

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 Publication date 2017
and research's language is العربية
 Created by Shamra Editor




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This research studies the behavior of the soft story in RC structures using static analysis and dynamic analysis, where studying models of RC structures containing soft story where this story results from increased hieght of story than the rest storys, was conducted static analysis using Nonliner pushover analysis and dynamic analysis using Nonliner time history analysis


Artificial intelligence review:
Research summary
يتناول هذا البحث دراسة تأثير وجود الطابق اللين على الاستجابة الزلزالية للأبنية البيتونية المسلحة. الطابق اللين هو الطابق الذي يحتوي على قساوة نسبية أقل من الطوابق التي تعلوه، وهو غالباً ما يكون الطابق الأرضي المفتوح المستخدم كمرآب للسيارات. يتسبب الطابق اللين في ضعف هيكلي يمكن أن يؤدي إلى انهيار المبنى بالكامل أو جعله غير صالح للاستخدام بعد الزلازل. تم تحليل سلوك الأبنية باستخدام طريقتين: التحليل الستاتيكي اللاخطي (طريقة الدفع المتتالي) والتحليل الديناميكي اللاخطي (طريقة السجل الزمني). تم دراسة ستة نماذج لمباني إطارية بيتونية مسلحة بارتفاعات مختلفة، بعضها يحتوي على طابق لين. أظهرت النتائج أن وجود الطابق اللين يحد من قدرة تحمل المنشأ للقوى الجانبية ويزيد من الإزاحات الطابقية، مما يؤدي إلى تلدن الأعمدة في الطابق اللين. توصي الدراسة بضرورة إجراء تحليل ديناميكي في حالة وجود طابق لين لضمان تصميم آمن وفعال.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة لأنها تسلط الضوء على مشكلة شائعة في تصميم الأبنية البيتونية المسلحة، وهي وجود الطابق اللين وتأثيره على الاستجابة الزلزالية. ومع ذلك، يمكن تحسين الدراسة من خلال تضمين تحليل أكثر تفصيلاً للبيانات التجريبية واستخدام نماذج أكثر تنوعاً من الأبنية. كما يمكن أن تكون الدراسة أكثر شمولاً إذا تم تضمين تأثيرات أخرى مثل تأثير المواد المستخدمة في البناء وتوزيع الأحمال. بالإضافة إلى ذلك، يمكن أن يكون من المفيد تضمين توصيات عملية لتحسين تصميم الطوابق اللينة في الأبنية الجديدة أو تعزيز الطوابق اللينة في الأبنية القائمة.
Questions related to the research
  1. ما هو الطابق اللين؟

    الطابق اللين هو الطابق الذي يحتوي على قساوة نسبية أقل من 70% من القساوة النسبية للطابق الذي يعلوه أو أقل من 80% من المتوسط الحسابي للقساوات النسبية للطوابق الثلاثة التي تعلوه.

  2. ما هي طرق التحليل المستخدمة في الدراسة؟

    تم استخدام طريقتين للتحليل: التحليل الستاتيكي اللاخطي (طريقة الدفع المتتالي) والتحليل الديناميكي اللاخطي (طريقة السجل الزمني).

  3. ما هي النتائج الرئيسية للدراسة؟

    أظهرت النتائج أن وجود الطابق اللين يحد من قدرة تحمل المنشأ للقوى الجانبية ويزيد من الإزاحات الطابقية، مما يؤدي إلى تلدن الأعمدة في الطابق اللين.

  4. ما هي التوصيات التي قدمتها الدراسة؟

    توصي الدراسة بضرورة إجراء تحليل ديناميكي في حالة وجود طابق لين لضمان تصميم آمن وفعال.


References used
Applied Technology Council, ATC 40, Seismic Evaluation and Retrofit of Concrete Buildings, Volume 1-2, California, 1996
European Committee of Standardization, EUROCODEurocode-8, Design of Structures for Earthquake Resistance, Belgium, 2000
Federal Emergency Management Agency, FEMA 356, Prestandard and Commentary for the Rehabilitation of Buildings, 2000
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