Location
Chicago, Illinois
Date
02 May 2013, 2:00 pm - 3:30 pm
Abstract
A pile-supported bridge was to be constructed at a site in Vadnais Heights, Minnesota, located north of St. Paul, in an area underlain by a significant deposit of glaciolacustrine sand, silt, and clay, which extended to a depth of about 39 m. For the geotechnical analysis, the conventional soil borings were supplemented by performing seismic piezocone (SCPTu) soundings. At the beginning of bridge construction, test piles were driven which experienced unusually easy driving to the termination depths of 38.4 to 40.2 m. High strain dynamic testing was used during pile installation and during restrike. After only a 2-day waiting period, the pile resistance increased over 300% through soil setup. The SCPTu data were used to evaluate the pile resistance, and the total pile capacity was evaluated by various CPT/CPTu methods. The predicted results are compared to the test pile results.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Reuter, Gregory R., "Bridge Foundation Piles in Varved Glaciolacustrine Deposits Exhibiting Very High Soil Setup" (2013). International Conference on Case Histories in Geotechnical Engineering. 6.
https://scholarsmine.mst.edu/icchge/7icchge/session02/6
Bridge Foundation Piles in Varved Glaciolacustrine Deposits Exhibiting Very High Soil Setup
Chicago, Illinois
A pile-supported bridge was to be constructed at a site in Vadnais Heights, Minnesota, located north of St. Paul, in an area underlain by a significant deposit of glaciolacustrine sand, silt, and clay, which extended to a depth of about 39 m. For the geotechnical analysis, the conventional soil borings were supplemented by performing seismic piezocone (SCPTu) soundings. At the beginning of bridge construction, test piles were driven which experienced unusually easy driving to the termination depths of 38.4 to 40.2 m. High strain dynamic testing was used during pile installation and during restrike. After only a 2-day waiting period, the pile resistance increased over 300% through soil setup. The SCPTu data were used to evaluate the pile resistance, and the total pile capacity was evaluated by various CPT/CPTu methods. The predicted results are compared to the test pile results.
