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Experimental Study on Seismic Performance of Precast Columns Repaired with CFRP Fabrics.
Liu, Laijun; Lei, Song; Wu, Fangwen; Lin, Weiwei; Peng, Kai; Fan, Xiangyan.
Afiliação
  • Liu L; School of Highway, Chang'an University, Xi'an 710064, China.
  • Lei S; School of Highway, Chang'an University, Xi'an 710064, China.
  • Wu F; Department of Civil Engineering, Aalto University, 02150 Espoo, Finland.
  • Lin W; School of Highway, Chang'an University, Xi'an 710064, China.
  • Peng K; Department of Civil Engineering, Aalto University, 02150 Espoo, Finland.
  • Fan X; School of Highway, Chang'an University, Xi'an 710064, China.
Materials (Basel) ; 15(21)2022 Oct 24.
Article em En | MEDLINE | ID: mdl-36363033
Earthquakes worldwide highlight the seismic vulnerability of reinforced concrete (RC) bridge columns. RC bridges are likely to collapse or lose service function due to damage to the bridge columns from strong earthquakes. Rapid repair of RC bridge columns is of great significance for maintaining traffic lines for emergency rescue work after earthquakes. In this study, an improved rapid repair method was developed to restore the bearing capacity of a damaged precast column after earthquake damage. A cyclic loading test was performed to simulate the seismic loading. The original column and the repaired column were both tested. The test results showed that the bearing capacity of the repaired columns was increased by 8%, and the energy dissipation capacity was 53% higher than that of the original column. The ductility decreased because the test for the repaired specimen ended in advance. The initial stiffness of the repaired columns was reduced, but the stiffness was significantly developed in the later loading stage. The rapid repair method proposed in this study exhibited an excellent effect on restoring the seismic resistance of the damaged columns.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article