Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental studies on the seismic behavior of reinforced concrete beam-column joints strengthened with basalt fiber-reinforced polymer sheets
Highlights The seismic behavior of RC joints strengthened with BFRP sheets was investigated. Detailed strengthening schemes for RC joints was proposed. The effect of RC slab on the beams and diverse layers of BFRP sheets were discussed. The energy dissipation capacity were increased after strengthening with BFRP sheets.
Abstract In this research, six reinforced concrete (RC) interior beam-column joints, including one reference specimen and five specimens strengthened with basalt fiber-reinforced polymer (BFRP) sheets in different ways, were tested under the cyclic load. Results obtained from the test showed that: (1) the seismic performance of joints were significantly improved after strengthening with BFRP sheets with proposed strengthening schemes; (2) no evident debonding of BFRP sheets was observed in the test indicating that a good interface behavior between the BFRP and concrete, as well as the limited influence of the practical RC slab on the strengthening scheme could be found; (3) the load bearing capacity and ductility of joints increased by strengthening with BFRP sheets, among which larger increasing degrees of specimens strengthened with three layers of BFRP sheets could be found; (4) the stiffness of joints increased after strengthening with BFRP sheets, while the initial stiffness of specimens strengthened with BFRP sheets in the core areas exhibited larger values than those of other strengthened specimens; (5) the energy dissipation capacity of joints improved by BFRP, and more effects by increasing the layers of FRP sheets or strengthening with FRP sheets in whole lengths could be obtained.
Experimental studies on the seismic behavior of reinforced concrete beam-column joints strengthened with basalt fiber-reinforced polymer sheets
Highlights The seismic behavior of RC joints strengthened with BFRP sheets was investigated. Detailed strengthening schemes for RC joints was proposed. The effect of RC slab on the beams and diverse layers of BFRP sheets were discussed. The energy dissipation capacity were increased after strengthening with BFRP sheets.
Abstract In this research, six reinforced concrete (RC) interior beam-column joints, including one reference specimen and five specimens strengthened with basalt fiber-reinforced polymer (BFRP) sheets in different ways, were tested under the cyclic load. Results obtained from the test showed that: (1) the seismic performance of joints were significantly improved after strengthening with BFRP sheets with proposed strengthening schemes; (2) no evident debonding of BFRP sheets was observed in the test indicating that a good interface behavior between the BFRP and concrete, as well as the limited influence of the practical RC slab on the strengthening scheme could be found; (3) the load bearing capacity and ductility of joints increased by strengthening with BFRP sheets, among which larger increasing degrees of specimens strengthened with three layers of BFRP sheets could be found; (4) the stiffness of joints increased after strengthening with BFRP sheets, while the initial stiffness of specimens strengthened with BFRP sheets in the core areas exhibited larger values than those of other strengthened specimens; (5) the energy dissipation capacity of joints improved by BFRP, and more effects by increasing the layers of FRP sheets or strengthening with FRP sheets in whole lengths could be obtained.
Experimental studies on the seismic behavior of reinforced concrete beam-column joints strengthened with basalt fiber-reinforced polymer sheets
Shen, Dejian (Autor:in) / Li, Ming (Autor:in) / Kang, Jiacheng (Autor:in) / Liu, Ci (Autor:in) / Li, Chengcai (Autor:in)
27.02.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch