The paper presents the geotechnical verification of safety and serviceability of the South anchor block of the suspension bridge crossing the izmit Bay in northwest of Turkey. Due to irregular geometry of the anchor block foundation and complex loading conditions 3D finite element modelling has been preferred for the assessment of stability for ultimate limit state for static and seismic cases and for serviceability limit state. As part of the seismic design scenario, the analysis has been carried out applying pseudo-static loads, based on an assessment of an extensive number of load-time-histories. The possible liquefaction of upper soil layers surrounding the anchor block has also been considered. The results show that for all limit states the global safety factor is greater than 1.0. The calculated displacements are of an acceptable order of magnitude for all relevant limit states.
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