Author: Ali Salah Alameh
Publisher:
ISBN:
Category : Prestressed concrete beams
Languages : en
Pages : 142
Book Description
This study was conducted to evaluate the deflection of partially prestressed concrete beams (PPC) under static and cyclic fatigue loading covering the boundaries of fully prestressed and fully reinforced. Two analytical models were developed, one model for predicting deflection under service monotonic loading and the other for predicting deflection under cyclic fatigue loading. Both models were derived based on interaction between the tensile steel and concrete through bond and slip of reinforcement between the cracked sections. The developed models were compared With extensive experimental results and showed to reproduce, within a good degree of accuracy, load-deflection response of PPC beams tested under both static and cyclic fatigue loading-Several conclusions were drawn on the basis of analytical results, verified by experimental evidence. In designing prestressed concrete beams for fatigue loading, careful consideration should be given to the increase in reinforcement stresses induced by cyclic creep of concrete. This phenomenon is particularly important in cracked fully prestressed beams where the stresses were observed to increase significantly with number of cycles. This phenomenon does not only reduce the fatigue life of the beams but also results in a significant increase in their deflections under cyclic loading. The reinforcing steel in the partially prestressed beams plays a major role in reducing the phenomenon of steel stress increase under cyclic loading which results in enhancing their fatigue life and deformation performance! cracking, deflection,). It was found also, that parameters, such as bond strength, crack spacings and bar diameters have little influence on the service load-deflection response post cracking indicating that the contribution of the uncracked regions of the concrete member to its overall flexural rigidity can be practically neglected.
A New Model for Computing Deflection of Partially Prestressed Concrete Beams Under Static and Cyclic Fatigue Loading
Author: Ali Salah Alameh
Publisher:
ISBN:
Category : Prestressed concrete beams
Languages : en
Pages : 142
Book Description
This study was conducted to evaluate the deflection of partially prestressed concrete beams (PPC) under static and cyclic fatigue loading covering the boundaries of fully prestressed and fully reinforced. Two analytical models were developed, one model for predicting deflection under service monotonic loading and the other for predicting deflection under cyclic fatigue loading. Both models were derived based on interaction between the tensile steel and concrete through bond and slip of reinforcement between the cracked sections. The developed models were compared With extensive experimental results and showed to reproduce, within a good degree of accuracy, load-deflection response of PPC beams tested under both static and cyclic fatigue loading-Several conclusions were drawn on the basis of analytical results, verified by experimental evidence. In designing prestressed concrete beams for fatigue loading, careful consideration should be given to the increase in reinforcement stresses induced by cyclic creep of concrete. This phenomenon is particularly important in cracked fully prestressed beams where the stresses were observed to increase significantly with number of cycles. This phenomenon does not only reduce the fatigue life of the beams but also results in a significant increase in their deflections under cyclic loading. The reinforcing steel in the partially prestressed beams plays a major role in reducing the phenomenon of steel stress increase under cyclic loading which results in enhancing their fatigue life and deformation performance! cracking, deflection,). It was found also, that parameters, such as bond strength, crack spacings and bar diameters have little influence on the service load-deflection response post cracking indicating that the contribution of the uncracked regions of the concrete member to its overall flexural rigidity can be practically neglected.
Publisher:
ISBN:
Category : Prestressed concrete beams
Languages : en
Pages : 142
Book Description
This study was conducted to evaluate the deflection of partially prestressed concrete beams (PPC) under static and cyclic fatigue loading covering the boundaries of fully prestressed and fully reinforced. Two analytical models were developed, one model for predicting deflection under service monotonic loading and the other for predicting deflection under cyclic fatigue loading. Both models were derived based on interaction between the tensile steel and concrete through bond and slip of reinforcement between the cracked sections. The developed models were compared With extensive experimental results and showed to reproduce, within a good degree of accuracy, load-deflection response of PPC beams tested under both static and cyclic fatigue loading-Several conclusions were drawn on the basis of analytical results, verified by experimental evidence. In designing prestressed concrete beams for fatigue loading, careful consideration should be given to the increase in reinforcement stresses induced by cyclic creep of concrete. This phenomenon is particularly important in cracked fully prestressed beams where the stresses were observed to increase significantly with number of cycles. This phenomenon does not only reduce the fatigue life of the beams but also results in a significant increase in their deflections under cyclic loading. The reinforcing steel in the partially prestressed beams plays a major role in reducing the phenomenon of steel stress increase under cyclic loading which results in enhancing their fatigue life and deformation performance! cracking, deflection,). It was found also, that parameters, such as bond strength, crack spacings and bar diameters have little influence on the service load-deflection response post cracking indicating that the contribution of the uncracked regions of the concrete member to its overall flexural rigidity can be practically neglected.
DEFORMATION AND CRACKING OF PARTIALLY PRESTRESSED CONCRETE BEAMS UNDER STATIC AND CYCLIC FATIGUE LOADING
Author: Muhaned H. Harajli
Publisher:
ISBN:
Category :
Languages : en
Pages : 200
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 200
Book Description
DEFORMATION AND CRACKING OF PARTIALLY PRESTRESSED CONCRETE BEAMS UNDER STATIC AND CYCLIC FATIGUE LOADING (DEFLECTION).
Author: MUHAMED HUSEIN HARAJLI
Publisher:
ISBN:
Category : Concrete beams
Languages : en
Pages : 418
Book Description
of 2 identical specimens designed with the same input parameters. One beam was tested under static load and the second beam was tested under cyclic fatigue loading at a constant load range simulating full live load.
Publisher:
ISBN:
Category : Concrete beams
Languages : en
Pages : 418
Book Description
of 2 identical specimens designed with the same input parameters. One beam was tested under static load and the second beam was tested under cyclic fatigue loading at a constant load range simulating full live load.
DEFORMATIONS AND DEFLECTIONS OF PARTIALLY PRESTRESSED CONCRETE T-BEAMS UNDER STATIC AND RANDOM AMPLITUDE FATIGUE LOADING.
Author: MESSAOUD FOUNAS
Publisher:
ISBN:
Category :
Languages : en
Pages : 423
Book Description
observed that shear failure under random amplitude fatigue loading may need further investigation.
Publisher:
ISBN:
Category :
Languages : en
Pages : 423
Book Description
observed that shear failure under random amplitude fatigue loading may need further investigation.
Deflection of Partially Prestressed Concrete Beams Under Sustained and Cyclic Fatigue Loadings
Author: Siri Watcharaumnuay
Publisher:
ISBN:
Category : Concrete beams
Languages : en
Pages : 329
Book Description
Publisher:
ISBN:
Category : Concrete beams
Languages : en
Pages : 329
Book Description
Deformations and Deflections of Partially Prestressed Concrete T-beams Under Static and Random Amplitude Fatigue Loading
Author: Messaoud Founas
Publisher:
ISBN:
Category : Fiber-reinforced concrete
Languages : en
Pages : 462
Book Description
observed that shear failure under random amplitude fatigue loading may need further investigation.
Publisher:
ISBN:
Category : Fiber-reinforced concrete
Languages : en
Pages : 462
Book Description
observed that shear failure under random amplitude fatigue loading may need further investigation.
Research Report
Author: American University of Beirut
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 176
Book Description
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 176
Book Description
Deflection of Partially Prestressed Concrete Beams Under Sustained and Cyclic Fatique Loadings
Author: Siri Watcharaumnuay
Publisher:
ISBN:
Category :
Languages : en
Pages : 658
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 658
Book Description
Concrete Abstracts
Author:
Publisher:
ISBN:
Category : Cement
Languages : en
Pages : 392
Book Description
Publisher:
ISBN:
Category : Cement
Languages : en
Pages : 392
Book Description
PCI Journal
Author:
Publisher:
ISBN:
Category : Precast concrete
Languages : en
Pages : 1100
Book Description
Publisher:
ISBN:
Category : Precast concrete
Languages : en
Pages : 1100
Book Description