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Numerical analysis of the behavior of precast l-shaped beams / Ahmed Mostafa Elsaied Ali Ghanem ; Supervised Adel Yahia Akl

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Ahmed Mostafa Elsaied Ali Ghanem , 2018Description: 106 P. : charts , facsimiles ; 30cmOther title:
  • L التحليل العددى لسلوك الكمرات سابقة الصب على شكل حرف [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering Summary: Precast spandrel L-shaped beams are commonly used in the perimeter of precast parking structures to transfer deck loads to vertical members. The unsymmetrical cross section of these beams which supports eccentric loads resulting in combined shear, torsion and flexure forces makes spandrel L-shaped beams one of the most critical elements in precast construction.These loading conditions forces the spandrel beams to significantly rotate about its weak axis. This lateral deflection increases as loads increase that may cause instability of the beam.Therefore, limiting this lateral deflection has become the subject of many studies for these types of beams. The main challenges facing L-shaped beams are shear and torsion distress in their end regions near supports where they experience a skew bending failure. The objective of this research is to study the behavior of these beams under combined loading conditions.Testing full scale spandrel beams with their large cross section was believed to be costly. Therefore, this research introduces a parametric study including 16 finite element models to investigate the effect of various factors believed to influence the behavior of these types of beams. Moreover, this research introduces new proposed special connections that reduce the rotation of spandrel L-shaped beams. Results of the parametric study are encouraging to reduce the lateral deflection of the spandrels to minimum
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.05.M.Sc.2018.Ah.N (Browse shelf(Opens below)) Not for loan 01010110077534000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.05.M.Sc.2018.Ah.N (Browse shelf(Opens below)) 77534.CD Not for loan 01020110077534000

Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering

Precast spandrel L-shaped beams are commonly used in the perimeter of precast parking structures to transfer deck loads to vertical members. The unsymmetrical cross section of these beams which supports eccentric loads resulting in combined shear, torsion and flexure forces makes spandrel L-shaped beams one of the most critical elements in precast construction.These loading conditions forces the spandrel beams to significantly rotate about its weak axis. This lateral deflection increases as loads increase that may cause instability of the beam.Therefore, limiting this lateral deflection has become the subject of many studies for these types of beams. The main challenges facing L-shaped beams are shear and torsion distress in their end regions near supports where they experience a skew bending failure. The objective of this research is to study the behavior of these beams under combined loading conditions.Testing full scale spandrel beams with their large cross section was believed to be costly. Therefore, this research introduces a parametric study including 16 finite element models to investigate the effect of various factors believed to influence the behavior of these types of beams. Moreover, this research introduces new proposed special connections that reduce the rotation of spandrel L-shaped beams. Results of the parametric study are encouraging to reduce the lateral deflection of the spandrels to minimum

Issued also as CD

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