Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature performance of damaged reinforced concrete columns under post-earthquake fires
Post-earthquake fires (PEF) are a frequent phenomenon of earthquakes and usually causes severe damage to reinforced-concrete (RC) columns. To determine the high-temperature performance of RC columns damaged by PEF, the geometric-damage forms of concrete columns after an earthquake are mainly classified as cracking, concrete spalling, and residual deformation on the basis of existing hazard and experimental data. Full-scale seismic-damage column tests were performed to analyse the failure mode of components at a high temperature. Subsequently, the relative depth of cracks, thickness of concrete spalling, relative height of spalling, and residual deformation were proposed as geometric-damage parameters to calculate the thermal-field distribution. Finally, according to the relation between the geometric-damage parameters and the bearing capacity, equations for predicting the high-temperature bearing capacity of PEF concrete columns were established.
High-temperature performance of damaged reinforced concrete columns under post-earthquake fires
Post-earthquake fires (PEF) are a frequent phenomenon of earthquakes and usually causes severe damage to reinforced-concrete (RC) columns. To determine the high-temperature performance of RC columns damaged by PEF, the geometric-damage forms of concrete columns after an earthquake are mainly classified as cracking, concrete spalling, and residual deformation on the basis of existing hazard and experimental data. Full-scale seismic-damage column tests were performed to analyse the failure mode of components at a high temperature. Subsequently, the relative depth of cracks, thickness of concrete spalling, relative height of spalling, and residual deformation were proposed as geometric-damage parameters to calculate the thermal-field distribution. Finally, according to the relation between the geometric-damage parameters and the bearing capacity, equations for predicting the high-temperature bearing capacity of PEF concrete columns were established.
High-temperature performance of damaged reinforced concrete columns under post-earthquake fires
Wen, Bo (Autor:in) / Zhang, Lu (Autor:in) / Wu, Bo (Autor:in) / Niu, Ditao (Autor:in)
Structure and Infrastructure Engineering ; 17 ; 260-274
01.02.2021
15 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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