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Structural Analysis-I

Structural Analysis-I. Dr. Ali Tayeh. Second Semester 2009-2010. Lecture 13. Cables & Arches Ch.5 in text book. Cables. Cables are often used in engineering structure to support and or transmit loads from one member to another. Cables.

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Structural Analysis-I

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  1. Structural Analysis-I Dr. Ali Tayeh Second Semester 2009-2010

  2. Lecture 13 Cables & Arches Ch.5 in text book

  3. Cables • Cables are often used in engineering structure to support and or transmit loads from one member to another

  4. Cables الكوابل هي نوع من الانظمة الانشائية الذي تقاوم القوى الخارجية التي يتعرض لها بواسطة اجهادات الشد التي تتولد بداخلة. وهو عبارة عن حبل مثبت من طرفية ومحمل بالأحمال في مواضع مختلفة منة كما في الشكل المقابل. وبما أن الحبل مرن ولا يقاوم عزوم الانحناء فأن كل القوى الداخلية في مقاطع هذا الحبل تكون من نوع واحد وهي قوى شد محورية. عندما يتعرض الكابل للأحمال المركزة يتشكل عل شكل أجزاء مستقيمة تصل بين مواضع هذه الاحمال وإذا كانت هذه الاحمال موزعة بانتظام فان الكابل يأخذ شكل القوس.

  5. Cables subjected to concentrated loads

  6. Example 1 Determine the tension in cables and what is the dimension h ?

  7. Cables subjected to a Uniform Distributed Load

  8. Analysis Procedure

  9. 1

  10. General Case

  11. Note

  12. Example 2 Determine the tension of the cable at points A, B, C

  13. Example 3 Determine the tension of the cable at points A, B

  14. Arches

  15. Arches Types

  16. Three hinge frame

  17. Example 1 Determine the internal forces at Section D

  18. 242 86 cos20 93 sin20 86 86 sin20 93 93 cos20 242 112.6 58

  19. Example 1 Determine the internal forces at Section D

  20. Example Determine the reactions for the arch Determine the internal forces at point E

  21. Solution:

  22. Internal Forces:

  23. We will find the shear and the normal forces just before and just after E

  24. Group Work 1 Determine the internal forces at B

  25. Group Work 2 Determine the Tension at A & B

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