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A Method for the design of FRC tunnel linings reinforced with FRP bars

Demir, Mutlu
There are some difficulties in the construction of precast conventional reinforced concrete tunnel segments. Due to corrosion problem of ordinary reinforcement, the task becomes more complicated. Moreover, the workmanship for the construction of segments is also very time consuming. There are some research for the design of tunnel segments with fiber reinforced polymer (FRP) bars. Besides, guidelines for the design of fiber reinforced concrete (FRC) tunnel linings are also available. This thesis provides a methodology for the design of FRC tunnel linings reinforced with FRP bars. The methodology is mainly based on the recommendations and limitations in accordance with fib Model Code 2010 (2012), bulletin 65&66, ACI 440 and ACI 544. The methodology includes both temporary and permanent loads checks for the construction of tunnel lining segments. The methodology provides section resistance checks in ultimate state and in serviceability limit states. Additionally, mechanical checks as defined in fib Model Code (2012) are also provided. Finally, small-scale and full-scale tests have been performed.