A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effectiveness of composites in earthquake damage repair of reinforced concrete flared columns
A method to utilize fiber composites for rapid repair of earthquake damaged flared columns was developed. Two 0.4-scale reinforced concrete columns that had been tested to failure in previous research were used. Both columns had been sujected to slow cyclic loads and had failed due to low-cycle fatigue of the longitudinal bars. To repair the columns, the damaged concrete in and around the plastic hinge was removed and the steel bars were straightened. Low-shrinkage, high-strength concrete grout was placed in the column afterward. The broken longitudinal bars were not replaced. Rather, glass and carbon fiber reinforced polymer (FRP) sheets with fibers running in the axial direction of the column were added to provide flexural strength to the columns. Additionally, glass FRP sheets with horizontal fibers were attached on the column to provide confinement and shear strength. Cyclic tests of the repaired columns indicated that the method to restore the strength was effective. Analysis using conventional constitutive relationships led to a close estimate of the lateral load response of the models.
Effectiveness of composites in earthquake damage repair of reinforced concrete flared columns
A method to utilize fiber composites for rapid repair of earthquake damaged flared columns was developed. Two 0.4-scale reinforced concrete columns that had been tested to failure in previous research were used. Both columns had been sujected to slow cyclic loads and had failed due to low-cycle fatigue of the longitudinal bars. To repair the columns, the damaged concrete in and around the plastic hinge was removed and the steel bars were straightened. Low-shrinkage, high-strength concrete grout was placed in the column afterward. The broken longitudinal bars were not replaced. Rather, glass and carbon fiber reinforced polymer (FRP) sheets with fibers running in the axial direction of the column were added to provide flexural strength to the columns. Additionally, glass FRP sheets with horizontal fibers were attached on the column to provide confinement and shear strength. Cyclic tests of the repaired columns indicated that the method to restore the strength was effective. Analysis using conventional constitutive relationships led to a close estimate of the lateral load response of the models.
Effectiveness of composites in earthquake damage repair of reinforced concrete flared columns
Die Wirksamkeit von Verbundwerkstoffen bei der Reparatur von Erdbebenschäden an Stahlbetonpfeilern
Saiidi, M. Saiid (author) / Cheng, Zhiyuan (author)
Journal of Composites for Construction ; 8 ; 306-314
2004
9 Seiten, 14 Bilder, 3 Tabellen, 13 Quellen
Article (Journal)
English
Effectiveness of Composites in Earthquake Damage Repair of Reinforced Concrete Flared Columns
| Online Contents | 2004
Effectiveness of Composites in Earthquake Damage Repair of Reinforced Concrete Flared Columns
| British Library Online Contents | 2004
Seismic Design of Flared Columns
| British Library Conference Proceedings | 2005
| British Library Online Contents | 2004