SANMAR SHIPYARD PROJECT
The main goal of the in-situ soil improvement to be implemented is to form a homogeneous crust against liquefaction, to reduce the amount of settlement under static and seismic loads and minimize the differential settlements with rigid Impact® elements at the polder site which consists of loose to medium dense sandy layer and underlying soft to medium stiff clayey layer.
The distributed loads on the paved concrete area are 50 kPa and 100 kPa, which are out of the loading areas such as building foundations and crane runways. The ground improvement solution was required to resist a peak ground acceleration of 0.4g.
The soil investigations indicate the presence of an upper layer consisting of fill (gravelly, sandy) with a thickness of 2-5m. The fill is underlain by a sandy (5m thick) layer. This layer was scattered by soft to medium stiff clay layer with a thickness of 3m. Under this layer, all results indicate the existence of a clay layer of soft to very stiff (scattered sandy layer) to the depth of 30-38m. This layer is underlain by dense sandy layer. Groundwater table is reported to be at ground surface.
A total of 46,540 meters Impact® elements were installed with a square pattern of 1.85m by 1.85m on center and reaching to 10m and 15m lengths beneath the distributed loads of 50 kPa and 100 kPa, respectively. Impact® Piers are considered as the most feasible solution for this project.
OWNER: SANMAR SHIPYARD
PROJECT: MAG ENGINEERING
RAP DESIGNER AND INSTALLER: SENTEZ INSAAT
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