BEHAVIOR and strengthening of rc t- girders in torsion and shear

Object Tools Home Edit Reviev Forms Protec Help Forma AlignFind and Header &Footer ExtractBates Number Edit OCR Add Insert Bookmark Link Select ImageReplace A Watermark Tools Text /Amages Pages Page Marks Navigation Ahmed Daif PhD 2007 X ABSTRACT Failure of a structural clement under shear and torsion is brittle in natuze and should be avoided as it compromises the ductile behaviour of the structure. Under vatious cases of loading and geometric configuration, concrete structural members are subjected to significant torsion accompanied by cither bending, or shear and bending. A limited number of studics were conducted to study torsion and shear behaviour of reinforced concrete (RC) girders. Most of these studies were focused on rectangular girders. Nonc were condueted to investigate the strengthening of RC T-girders under combined torsion and shear. An experimental study was condlucted to investigate the shear and torsion behaviour of RC T-girders. Thre T-girders were tested while subjceted to three different ue to shear ratios selected to cover a wide range of the lorsion and shear interactions In addiion, the Shear and Torsion provisions of the North American Design Codes were assessed using the experimental data. It was found that code predictions are more accurate at low torque to shear ratios. In most damage problems, strengthening using fibre reinforced polymers ( an effective and convenient solution. An experimental investization to explore the proposed and implemented. The eftectiveness of the proposed techniques was evaluated torsivually, steligtlhened rectungufur Re idern Was propesed and validated using strengtliening of RC T- girders was conducted.supervision by : ahmed gh