Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Time-Dependent Prestress Losses in Pretensioned Concrete Construction
Theoretical time-dependent deformations and prestress losses in pretensioned, prestressed simply supported concrete girders, based on the revised rate of creep method, are presented. The effects of age of precast girders at the time of casting of the deck concrete, time of transfer of prestress, deck dead load, type of prestressing strands (stress-relieved or low-relaxation strands), initial level of stress in the concrete, and the effects of varying environmental conditions on the behavior of concrete structures are studied. Predicted unit creep and shrinkage strains versus time relationships are based on the 1970 C.E.B. recommendations and relaxation losses for stress-relieved strands are estimated using the expressions developed by Magura, Sozen, and Siess. A similar expression is used for the case of low-relaxation strands.
Time-Dependent Prestress Losses in Pretensioned Concrete Construction
Theoretical time-dependent deformations and prestress losses in pretensioned, prestressed simply supported concrete girders, based on the revised rate of creep method, are presented. The effects of age of precast girders at the time of casting of the deck concrete, time of transfer of prestress, deck dead load, type of prestressing strands (stress-relieved or low-relaxation strands), initial level of stress in the concrete, and the effects of varying environmental conditions on the behavior of concrete structures are studied. Predicted unit creep and shrinkage strains versus time relationships are based on the 1970 C.E.B. recommendations and relaxation losses for stress-relieved strands are estimated using the expressions developed by Magura, Sozen, and Siess. A similar expression is used for the case of low-relaxation strands.
Time-Dependent Prestress Losses in Pretensioned Concrete Construction
H. D. Hernandex (Autor:in) / W. L. Gamble (Autor:in)
1975
186 pages
Report
Keine Angabe
Englisch
Prestress losses in fibreglass pretensioned concrete compression members
| Online Contents | 1995
Prestress losses in fibreglass pretensioned concrete compression members
| Online Contents | 1995
Prestress losses in fibreglass pretensioned concrete compression members
| Springer Verlag | 1995
Prestress losses in fibreglass pretensioned concrete compression members
| British Library Online Contents | 1995