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A Comparative Study between Pseudostatic and Dynamic Analysis in Seismic Safety for Rock- Fill Dams

مقارنة بين التحليل شبه السكوني و الديناميكي في حساب الأمان الزلزالي للسدود الركامية

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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This study aims at conducting a comparative study between the Pseudostatic Approach that is based on the limit equilibrium theory and the Dynamic Analysis using to the finite element theory using Geostudio software.


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Research summary
تتناول هذه الدراسة مقارنة بين أسلوبي التحليل شبه السكوني والتحليل الديناميكي في حساب الأمان الزلزالي للسدود الركامية. يُعتمد التحليل شبه السكوني على مبدأ القوى الثابتة باستخدام نظرية التوازن الحدي، بينما يعتمد التحليل الديناميكي على نظرية العناصر المحدودة ويأخذ في الاعتبار القوى المتغيرة تحت تأثير العطالة. تم استخدام برنامج Geostudio لإجراء التحليلين ومقارنة نتائج معامل الأمان لسد الرستن في سوريا. أظهرت النتائج أن التحليل الديناميكي يعطي نتائج أكثر دقة وموثوقية، حيث يأخذ في الاعتبار التغيرات الزمنية والمكانية للإجهادات والخواص الديناميكية للتربة. كما أظهرت الدراسة أن التحليل شبه السكوني قد يؤدي إلى تقدير غير دقيق للأمان الزلزالي، مما يستدعي الانتقال إلى التحليل الديناميكي لتقييم أمان السدود بشكل أفضل.
Critical review
دراسة نقدية: تعتبر هذه الدراسة خطوة مهمة نحو تحسين تقييم الأمان الزلزالي للسدود الركامية، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، الدراسة تعتمد بشكل كبير على برنامج Geostudio، وكان من الأفضل تضمين مقارنات مع برامج أخرى لتعزيز موثوقية النتائج. ثانياً، لم يتم إجراء تجارب ميدانية للتحقق من صحة النتائج النظرية، مما يضعف من قوة الاستنتاجات. ثالثاً، كان من الممكن توسيع نطاق الدراسة لتشمل أنواع أخرى من السدود وليس فقط السدود الركامية. وأخيراً، يجب أن تتضمن الدراسة توصيات أكثر تفصيلاً حول كيفية تطبيق نتائج التحليل الديناميكي في تصميم السدود المستقبلية.
Questions related to the research
  1. ما هو الفرق الأساسي بين التحليل شبه السكوني والتحليل الديناميكي في حساب الأمان الزلزالي للسدود؟

    التحليل شبه السكوني يعتمد على مبدأ القوى الثابتة باستخدام نظرية التوازن الحدي، بينما يعتمد التحليل الديناميكي على نظرية العناصر المحدودة ويأخذ في الاعتبار القوى المتغيرة تحت تأثير العطالة.

  2. لماذا يعتبر التحليل الديناميكي أكثر دقة من التحليل شبه السكوني؟

    لأن التحليل الديناميكي يأخذ في الاعتبار التغيرات الزمنية والمكانية للإجهادات والخواص الديناميكية للتربة، مما يوفر تقديرًا أكثر دقة للأمان الزلزالي للسدود.

  3. ما هي البرامج المستخدمة في هذه الدراسة لإجراء التحليلين؟

    تم استخدام برنامج Geostudio لإجراء التحليلين شبه السكوني والديناميكي ومقارنة نتائج معامل الأمان.

  4. ما هي التوصيات الرئيسية التي خلصت إليها الدراسة؟

    توصي الدراسة بعدم الاعتماد على التحليل شبه السكوني فقط لتقييم الأمان الزلزالي للسدود، والانتقال إلى التحليل الديناميكي الذي يعطي نتائج أكثر دقة وموثوقية.


References used
CANADIAN DAM ASSOCIATION CDA 2007-Dam Safety Guidelines. CDA, Canada, p300
CHIEH, Z and HWANG, R2004-1999 Chi Chi Earthquake of Taiwan. National Taiwan University, Taiwan, p8
INCORPORATED RESEARCH INSTITUTIONFOR SEISMOLOGY IRIS 2015-Map of Faults Around World. IRIS, American United States, p10
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