A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Observed and Predicted Forces on Auger Cast Piles
Two production piles were instrumented with pairs of strain gauges to provide information on the combined reliability of the numerical modeling and geotechnical engineering assessment of soil properties in predicting moments and shear forces for auger cast in place (ACIP) pile foundations. The pairs of strain gauges were installed during construction of a 47-story building foundation to define axial loads and moments at eight different depths along the length of the piles. The results of two years of data collection and analysis indicate that ACIP compression piles developed shear forces and moments at depths well below those commonly reinforced in these piles based on conventional analysis. These forces could potentially lead to the structural failure of the piles. The results indicate that for large buildings, ACIP foundation design should include three dimensional geotechnical/structural models capable of defining the forces acting on the piles. Knowing these forces will allow for the design of the piles considering load combinations as defined by ASCE/SEI 7 in the same manner that the other structural elements of the building are currently designed.
Observed and Predicted Forces on Auger Cast Piles
Two production piles were instrumented with pairs of strain gauges to provide information on the combined reliability of the numerical modeling and geotechnical engineering assessment of soil properties in predicting moments and shear forces for auger cast in place (ACIP) pile foundations. The pairs of strain gauges were installed during construction of a 47-story building foundation to define axial loads and moments at eight different depths along the length of the piles. The results of two years of data collection and analysis indicate that ACIP compression piles developed shear forces and moments at depths well below those commonly reinforced in these piles based on conventional analysis. These forces could potentially lead to the structural failure of the piles. The results indicate that for large buildings, ACIP foundation design should include three dimensional geotechnical/structural models capable of defining the forces acting on the piles. Knowing these forces will allow for the design of the piles considering load combinations as defined by ASCE/SEI 7 in the same manner that the other structural elements of the building are currently designed.
Observed and Predicted Forces on Auger Cast Piles
Horta, Evelio N. (author)
Geo-Congress 2020 ; 2020 ; Minneapolis, Minnesota
Geo-Congress 2020 ; 82-91
2020-02-21
Conference paper
Electronic Resource
English
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