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  From Conventional to Numerical Design Steel Fibre Reinforced Segmental Lining

  In this contribution, a multilevel computational modelling framework is proposed to investigate the response of steel fiber reinforced lining segments subjected to thrust jack, grouting and ground loadings. This simulation approach offers an opportunity to directly investigate the influence of type and content of steel fibers on the performance of segmented linings at the structural scale. Using this framework, the post-cracking response of steel fiber reinforced lining segments is compared to conventional reinforced segments, designed within a reference tunnel project. It is shown that steel fiber reinforced linings provide a similar structural performance like conventional reinforced segments in the decisive tunnelling related loading scenarios while containing a noticeable reduced total steel amount.

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