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The effect of seismic pounding on the buildings in different geometric and dynamic properties

تأثير الصدم الزلزالي على الأبنية مختلفة الخصائص الهندسية و الديناميكية

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 Publication date 2014
and research's language is العربية
 Created by Shamra Editor




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The phenomenon of impact between the adjacent buildings is one of the most important reasons for collapse of buildings during the earthquakes for that most of the codes resort to avoid impact by increasing the distance between adjacent buildings, but on the other hand high cost of land requires us to take advantage of the largest possible area in addition to the difficulty of making the separation architecturally and in particularly for high buildings the separation may offer up to 50 cm. We tried to have this research one of the studies that discuss the subject of seismic pounding where we discussed the methods for modeling the pounding and the most appropriate way to study the impact depending on the program dynamic analysis Ansys (Autodyn Ver. 11) then chose several cases for study seismic impact in three-dimensional models to cover most of the study variables that may affect this phenomenon, and we doer non- linear dynamic analysis for all cases, with applying acceleration function is defined by equation its constants are changing with processing the seismic records data. After finishing the analysis for all the models we have discussed changing the transitions and stresses and strains , and studied the factors affecting the impact , and discussed results of study and then we have summarizes the recommendations in that we see fit through this search.


Artificial intelligence review:
Research summary
يتناول البحث تأثير الصدم الزلزالي على الأبنية المتجاورة ذات الخصائص الهندسية والديناميكية المختلفة. يركز البحث على كيفية نمذجة هذه الظاهرة باستخدام برنامج التحليل الديناميكي Ansys (Autodyn Ver. 11) ويستعرض عدة حالات لدراسة تأثير الصدم على الانتقالات والإجهادات والتشوهات في الأبنية. تم تحليل نماذج ثلاثية الأبعاد للأبنية المتجاورة مع اختلاف في ارتفاعاتها ومناسيب بلاطاتها والمسافات الفاصلة بينها، وتمت دراسة تأثير الصدم على هذه النماذج باستخدام معادلة تسارع زلزالي محددة. توصل البحث إلى أن الصدم الزلزالي يسبب أضراراً جسيمة للأبنية المتجاورة، خاصة في حالة عدم كفاية المسافة الفاصلة بينها، وأوصى بضرورة زيادة المسافة الفاصلة بين الأبنية لتقليل تأثير الصدم.
Critical review
دراسة نقدية: يعتبر البحث مهماً في مجال الهندسة الإنشائية، حيث يسلط الضوء على مشكلة حقيقية تواجه الأبنية في المناطق الزلزالية. ومع ذلك، يمكن توجيه بعض الانتقادات البناءة للبحث. أولاً، قد يكون من المفيد تضمين دراسات مقارنة مع نتائج أبحاث أخرى في نفس المجال لتأكيد النتائج. ثانياً، لم يتناول البحث بشكل كافٍ تأثير المواد المختلفة المستخدمة في البناء على نتائج الصدم الزلزالي، مما قد يؤثر على دقة النتائج. ثالثاً، يمكن تحسين البحث بإضافة توصيات أكثر تفصيلاً حول كيفية تطبيق النتائج في التصميم الهندسي الفعلي للأبنية.
Questions related to the research
  1. ما هو الهدف الرئيسي من البحث؟

    الهدف الرئيسي من البحث هو دراسة ظاهرة الصدم الزلزالي باستخدام برنامج حاسوبي متطور قادر على نمذجة مناطق الصدم المتوقعة واقتراح الحلول التي تؤمن السلامة الإنشائية للأبنية المتجاورة.

  2. ما هي الأدوات المستخدمة في البحث لنمذجة الصدم الزلزالي؟

    تم استخدام برنامج التحليل الديناميكي Ansys (Autodyn Ver. 11) لنمذجة الصدم الزلزالي وتحليل تأثيره على الأبنية المتجاورة.

  3. ما هي النتائج الرئيسية التي توصل إليها البحث؟

    توصل البحث إلى أن الصدم الزلزالي يسبب أضراراً جسيمة للأبنية المتجاورة، خاصة في حالة عدم كفاية المسافة الفاصلة بينها، وأوصى بضرورة زيادة المسافة الفاصلة بين الأبنية لتقليل تأثير الصدم.

  4. ما هي التوصيات التي قدمها البحث لتقليل تأثير الصدم الزلزالي على الأبنية؟

    أوصى البحث بزيادة المسافة الفاصلة بين الأبنية المتجاورة، وتجنب إضافة جدران قص لأحد المبنيين دون الآخر، واستخدام فواصل زلزالية مناسبة لتقليل تأثير الصدم.


References used
RIEDEL W. 2000. "Beton unter dynamischen Lasten..." Phd Thesis. EMI. Freiburg Germany. P1200
KASAL, JAGIASI, (1996) ." Maison Survey And Analysis Of Building Pounding During 1989 Loma Prieta Earthquake Elsevier Science Ltd". P 2103
AUTODYN VER.11.2000. "finite element analyses and Dynamic Analysis and Design of Three-Dimensional Structures" . P788
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