Abstract:
In this article it is presented a methodology of numerical simulations which consider the effect of post grouting on the performance of soil nailing walls. After describing the finite element methodology, it is shown an application of the proposed calculation process on an urban excavation, a soil nailing retaining wall of almost 18 m high, which was executed in Sã o Paulo / SP in 2010. The work, where it was applied post grouting by contractor Solotrat, presented multiple extensometers as a device to monitor displacements. Based on the multiple extensometers recorded data, the results obtained from the numerical simulations were compared with these field data, also comparing these results with a hypothetical situation where the post grouting wasn’ t performed. It was noticed the small displacements obtained in the soil nailing wall would only be achieved if the enhanced interaction between nail and soil was considered according to the proposed methodology. KEYWORDS: Retaining Walls, Soil Nailing, Grouting, Numerical Simulations.