A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
New Bronx-Whitestone Bridge Approach Foundations Design and Construction
The Bronx-Whitestone Bridge carries I-678 across the East River, connecting The Bronx with Whitestone, Queens in New York City. The foundation design for both sides called for micro-piles. The soil conditions at this site presented many challenges to the foundation construction. Underlying the upper fill and/or organic layers are layers of dense silt and sand and hard clay, mixed with cobbles and boulders. To achieve the design capacity of the piles, it was necessary to drill through numerous obstructions encountered in the soil matrix. To make the project more challenging, a small settlement criterion was required for the existing bridge, and the installation of many of the micro-piles had to be performed with headroom constraints. TBTA awarded separate contracts for the construction of the Bronx approach and the Queens approach. The two contractors used different foundation construction methods. On the Bronx side, the micro-pile construction proved to be relatively successful. On the Queens side, the continuous flight auger (CFA) pile installation encountered some difficulties, necessitating remedial measures such as utilizing various means to remove/overcome obstructions, additional piles, and pile cap redesign. This paper describes the foundation design and construction for the reconstruction of the Bronx and Queens approaches for the Bronx-Whitestone Bridge, discusses and compares the different methods utilized for the pile installation for the Bronx and Queens approaches of the Bronx-Whitestone Bridge.
New Bronx-Whitestone Bridge Approach Foundations Design and Construction
The Bronx-Whitestone Bridge carries I-678 across the East River, connecting The Bronx with Whitestone, Queens in New York City. The foundation design for both sides called for micro-piles. The soil conditions at this site presented many challenges to the foundation construction. Underlying the upper fill and/or organic layers are layers of dense silt and sand and hard clay, mixed with cobbles and boulders. To achieve the design capacity of the piles, it was necessary to drill through numerous obstructions encountered in the soil matrix. To make the project more challenging, a small settlement criterion was required for the existing bridge, and the installation of many of the micro-piles had to be performed with headroom constraints. TBTA awarded separate contracts for the construction of the Bronx approach and the Queens approach. The two contractors used different foundation construction methods. On the Bronx side, the micro-pile construction proved to be relatively successful. On the Queens side, the continuous flight auger (CFA) pile installation encountered some difficulties, necessitating remedial measures such as utilizing various means to remove/overcome obstructions, additional piles, and pile cap redesign. This paper describes the foundation design and construction for the reconstruction of the Bronx and Queens approaches for the Bronx-Whitestone Bridge, discusses and compares the different methods utilized for the pile installation for the Bronx and Queens approaches of the Bronx-Whitestone Bridge.
New Bronx-Whitestone Bridge Approach Foundations Design and Construction
Du, Mangtao (Monty) (author) / Zellers, Daniela (author) / Wang, Joe (author) / Pepe, Frank (author) / Saladino, Christopher (author)
IFCEE 2018 ; 2018 ; Orlando, Florida
IFCEE 2018 ; 196-211
2018-06-06
Conference paper
Electronic Resource
English
New Bronx-Whitestone Bridge Approach Foundations Design and Construction
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