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Lateral Soil Movements Due to Pile Driving: A Case Study in Soft Clays
Pile driving in soft clays can cause lateral displacements due to undrained soil deformation that can affect adjacent structures. This paper describes observations, measurements, and analysis of lateral soil movements manifested during a large pile driving project using “displacement” piles in soft clays in East Baton Rouge, LA. The piles were driven in close proximity to a newly constructed, pile-supported, concrete cantilever retaining wall along the edge of the property. During the initial phase of the pile driving, lateral movements of up to 28 cm (11 in.) and outward rotations of up to 0.8° were measured in the retaining wall. Due to concerns about potential additional lateral soil movement, the subsequent phase of pile driving was monitored with vibration monitoring equipment, piezometers, and inclinometers in the ground between the pile driving and the retaining wall. The authors analyzed the raw monitoring data and compared them with predictions of lateral movements and pore pressures using cavity expansion theory. The measured data and analysis presented in this paper show that lateral movements of the pile-supported retaining wall were caused primarily by pile driving and that pile driving, even at distances greater than 50 times the pile diameter, can have a measurable cumulative effect on lateral soil movements and should not be summarily discounted.
Lateral Soil Movements Due to Pile Driving: A Case Study in Soft Clays
Pile driving in soft clays can cause lateral displacements due to undrained soil deformation that can affect adjacent structures. This paper describes observations, measurements, and analysis of lateral soil movements manifested during a large pile driving project using “displacement” piles in soft clays in East Baton Rouge, LA. The piles were driven in close proximity to a newly constructed, pile-supported, concrete cantilever retaining wall along the edge of the property. During the initial phase of the pile driving, lateral movements of up to 28 cm (11 in.) and outward rotations of up to 0.8° were measured in the retaining wall. Due to concerns about potential additional lateral soil movement, the subsequent phase of pile driving was monitored with vibration monitoring equipment, piezometers, and inclinometers in the ground between the pile driving and the retaining wall. The authors analyzed the raw monitoring data and compared them with predictions of lateral movements and pore pressures using cavity expansion theory. The measured data and analysis presented in this paper show that lateral movements of the pile-supported retaining wall were caused primarily by pile driving and that pile driving, even at distances greater than 50 times the pile diameter, can have a measurable cumulative effect on lateral soil movements and should not be summarily discounted.
Lateral Soil Movements Due to Pile Driving: A Case Study in Soft Clays
Vytiniotis, Antonios (author) / Casey, Brendan (author) / Sykora, David W. (author)
IFCEE 2018 ; 2018 ; Orlando, Florida
IFCEE 2018 ; 113-128
2018-06-06
Conference paper
Electronic Resource
English
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