GCG was commissioned to summarise the current condition of the wharf and to examine proposed remedial works to the lower level tie rods. GCG carried out a series of two and three dimensional finite element analyses, as well as limit equilibrium calculations. The numerical analyses showed that the forces in the ties increased significantly as a result of fill settlement resulting in loads that were significantly in excess of the design loads, thus supporting field observations. They confirmed that the situation was unacceptable, and the proposed remedial work required immediate action. The FE analyses examined tie and wall displacements during the excavation and backfilling over the ties, with small predicted displacements during all stages of the proposed remedial work.
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