Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Group Efficiencies for Design of Non-Displacement Pile Groups in Sand
In this paper, we present results of rigorous numerical analyses of small and large non-displacement pile groups subjected to axial loads. The finite-element (FE) analyses were performed using a realistic two-surface-plasticity constitutive model for sand implemented in ABAQUS. The model closely captures the stress-strain response of sand under various loading paths. The model mesh was carefully prepared such that the thickness of the shear bands formed in the FE simulations matched those observed in calibration chamber experiments complemented by image analyses. The load-settlement responses of 2×2 and 4×4 pile groups in medium-dense and dense sands were compared. The overall group efficiency for these pile groups ranged from 0.93 to 1.12 for settlement levels ranging from 30 to 50 mm. However, the efficiency of the individual piles depended on the location of the pile in the group, settlement level, and sand density. A summary table of efficiencies for the individual piles in the group and the pile groups are provided for design of non-displacement pile groups in sand.
Group Efficiencies for Design of Non-Displacement Pile Groups in Sand
In this paper, we present results of rigorous numerical analyses of small and large non-displacement pile groups subjected to axial loads. The finite-element (FE) analyses were performed using a realistic two-surface-plasticity constitutive model for sand implemented in ABAQUS. The model closely captures the stress-strain response of sand under various loading paths. The model mesh was carefully prepared such that the thickness of the shear bands formed in the FE simulations matched those observed in calibration chamber experiments complemented by image analyses. The load-settlement responses of 2×2 and 4×4 pile groups in medium-dense and dense sands were compared. The overall group efficiency for these pile groups ranged from 0.93 to 1.12 for settlement levels ranging from 30 to 50 mm. However, the efficiency of the individual piles depended on the location of the pile in the group, settlement level, and sand density. A summary table of efficiencies for the individual piles in the group and the pile groups are provided for design of non-displacement pile groups in sand.
Group Efficiencies for Design of Non-Displacement Pile Groups in Sand
Han, Fei (Autor:in) / Prezzi, Monica (Autor:in) / Salgado, Rodrigo (Autor:in)
International Foundations Congress and Equipment Expo 2021 ; 2021 ; Dallas, Texas
IFCEE 2021 ; 303-313
06.05.2021
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Group Efficiencies for Design of Non-Displacement Pile Groups in Sand
| British Library Conference Proceedings | 2021
Investigation of pile group efficiencies in sand
| British Library Conference Proceedings | 1994
Cyclic Pile-Soil Interaction Effects on Load-Displacement Behavior of Thermal Pile Groups in Sand
| Online Contents | 2021
Soil deformation around a displacement pile in sand
| British Library Conference Proceedings | 2002