Splicing and local reinforcement of concrete filled FRP tubes
Published: 2014
Publication Name: Composites 2013
Publication URL: https://rosap.ntl.bts.gov/view/dot/28592
Abstract:
This report includes fulfillment of Task 1 of a multi-task contract to further enhance concrete filled FRP tubes, or
the Bridge in a Backpack. Task 1 investigates and develops a feasible solution for splicing the concrete filled FRP
tubes. This will allow use of this bridge type in longer spans.
A splicing solution using a combination of internal rebar reinforcing and an outer FRP collar to connect the two
sides of the arch is developed and tested. The outer collar sustains the loads during filling of the arch with concrete.
The internal rebar provides the long term load carrying capacity with all dead and live loads.
Results from the laboratory tests and analysis show the splice detail is structurally adequate but is conservative.