Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bridge behaviors in recent earthquakes indicate that the uncertainty of seismic loads on bridge structures can result in bridge seismic damages and even bridge collapses. A bridge earthquake protective system with seismic isolation and seismic displacement control is proposed by this paper. A traditional laminated-rubber bearing is employed to support bridge superstructure, to provide lateral flexibility and centering forces, and to lengthen the period of vibration. The seismic energy under design earthquakes is dissipated by steel hysteretic dampers, while the excessive seismic displacements of bridge superstructure at bridge supports are limited by seismic displacement restrainers under unexpected earthquakes. The restrainers also transmit the corresponding excessive seismic energy to bridge substructures. The ductile behavior of bridge substructures is used to withstand and dissipate the excessive seismic energy to protect bridge structure from isolator failure and superstructure collapse.
Bridge behaviors in recent earthquakes indicate that the uncertainty of seismic loads on bridge structures can result in bridge seismic damages and even bridge collapses. A bridge earthquake protective system with seismic isolation and seismic displacement control is proposed by this paper. A traditional laminated-rubber bearing is employed to support bridge superstructure, to provide lateral flexibility and centering forces, and to lengthen the period of vibration. The seismic energy under design earthquakes is dissipated by steel hysteretic dampers, while the excessive seismic displacements of bridge superstructure at bridge supports are limited by seismic displacement restrainers under unexpected earthquakes. The restrainers also transmit the corresponding excessive seismic energy to bridge substructures. The ductile behavior of bridge substructures is used to withstand and dissipate the excessive seismic energy to protect bridge structure from isolator failure and superstructure collapse.
Bridge earthquake protection with seismic isolation
Feng, X. (Autor:in)
1999
9 Seiten, 6 Quellen
Aufsatz (Konferenz)
Englisch
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