Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental Study on Seismic Behavior of Scoured Pile-Group Foundations Considering Pile Uplift
Scoured pile-group foundations, as one of the most vulnerable parts of bridges, can suffer inelastic deformations under earthquakes. Other than capacity-protection strategy, one alternative solution is to treat the scoured pile-group foundations as potential energy-dissipation components with limited ductility. To this end, the seismic behavior of scoured pile foundations should be evaluated carefully. In this study, to reveal the impact of pile uplift on the seismic behavior of scoured pile-group-foundations, quasi-static cyclic loading tests were conducted on two 2×2 RC square-pile foundation specimens with and without significant pile-uplift potentials. The hysteretic behavior, cap rotations, and pile damages were recorded. Dissipated seismic energy were also discussed. Test results reveal that the specimen with significant pile-uplift, compared with its counterpart, has flag-shaped hysteretic loops, indicating a pile-uplift failure mode. The seismic energy was mainly dissipated by the pile-soil interface friction, suggesting the effect of pile-uplift should be considered carefully.
Experimental Study on Seismic Behavior of Scoured Pile-Group Foundations Considering Pile Uplift
Scoured pile-group foundations, as one of the most vulnerable parts of bridges, can suffer inelastic deformations under earthquakes. Other than capacity-protection strategy, one alternative solution is to treat the scoured pile-group foundations as potential energy-dissipation components with limited ductility. To this end, the seismic behavior of scoured pile foundations should be evaluated carefully. In this study, to reveal the impact of pile uplift on the seismic behavior of scoured pile-group-foundations, quasi-static cyclic loading tests were conducted on two 2×2 RC square-pile foundation specimens with and without significant pile-uplift potentials. The hysteretic behavior, cap rotations, and pile damages were recorded. Dissipated seismic energy were also discussed. Test results reveal that the specimen with significant pile-uplift, compared with its counterpart, has flag-shaped hysteretic loops, indicating a pile-uplift failure mode. The seismic energy was mainly dissipated by the pile-soil interface friction, suggesting the effect of pile-uplift should be considered carefully.
Experimental Study on Seismic Behavior of Scoured Pile-Group Foundations Considering Pile Uplift
Liu, Tengfei (Autor:in) / Wang, Xiaowei (Autor:in) / Ye, Aijun (Autor:in)
Structures Congress 2019 ; 2019 ; Orlando, Florida
Structures Congress 2019 ; 221-230
22.04.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Experimental Study on Seismic Behavior of Scoured Pile-Group Foundations Considering Pile Uplift
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