Pile Driving Effects on a Steel Truss Railway Bridge During Rehabilitation

This paper summarizes the performance of a steel truss railway bridge near Saskatoon, SK, which remained in service during pile driving activities for pier rehabilitation and new pier construction. 289 H section piles were driven to embedment depths of 9 m for rehabilitation of existing concrete piers, and 12 m for new piers, for the western portion of the bridge, over an approximate one-month timeline. Piles for existing piers were driven within one metre of the existing pile caps, which were supported on timber piles. Monitoring instrumentation included surveying of prisms mounted to the bridge deck and piers and installation of tilt loggers, and a vibration monitoring system, to monitor the lateral deflection and accelerations, respectively, of the structure during pile driving. The collected data provides an understanding of the response of the bridge structure from pile driving into the hard foundation till, along with expansion and contraction effects due to extreme temperature variations. Survey and tilt logger data were found to correlate well together, and with changes in ambient temperature. Wave Equation Analysis of Pile Driving (WEAP) was conducted to estimate pile termination criteria and driving hammer performance. Pile Dynamic Analyzer (PDA) testing was conducted on 10% of the piles; 9 and 12 m long piles driven into Sutherland Till exhibited average vertical capacities in the range of 1,940 kN and 2,700 kN, respectively.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: 1 PDF file, 717 KB, 18p.
  • Monograph Title: TAC 2018: Innovation and Technology: Evolving Transportation - 2018 Conference and Exhibition of the Transportation Association of Canada

Subject/Index Terms

Filing Info

  • Accession Number: 01683305
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: ITRD, TAC
  • Created Date: Oct 16 2018 2:05PM