Design and Launching of a Redundant Truss over a Busy Rail Yard
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Bibliographic Details
| Author(s): |
Martin Furrer
(Parsons, Chicago, IL, USA)
Greg Hasbrouck (Parsons, Chicago, IL, USA) Jack Yuzna (City of Minneapolis, Minneapolis, MN, USA) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Published in: | IABSE Symposium Vancouver 2017 | ||||
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| Page(s): | 1249-1256 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2017 | ||||
| DOI: | 10.2749/vancouver.2017.1249 | ||||
| Abstract: |
Five deteriorating Warren trusses over the busy BNSF Northtown rail yard in Minneapolis need replacement. The new structure consists of a skewed 305-foot (92.96 m) truss and two-span steel girder structure to meet the RR’s desire to eliminate two piers in their yard. The new truss incorporates unique load path and internal redundancy measures including eliminating fracture critical steel truss members and gusset plates and using a post-tensioned concrete bottom chord. Removal of the two existing truss spans over BNSF’s main line tracks and the installation of the new truss span is accomplished using a launching system. |
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| Keywords: |
launching redundancy truss post-tensioning accelerated bridge construction construction over railroads
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