Abstract:The land area part of the first phase of container terminal renovation project in Luojing port area of Shanghai Port involves the transformation of an existing bulk cargo yard.For the existing stacking area,the bear capacity ≥150 kPa and a settlement of more than 1 m has occured due to several years of preloading,while the non-stacking area has experienced relatively smaller consolidation and settlement.The ground is uneven considerably.The ARMG wheel load is heavy and is sensitive to settlement and differential settlement of railway for automated container yard.In view of the aforementioned design features,a research on ARMG railway foundation structure is carried out.The pile foundation railway beam and rail sleeper ballast are compared,and an integrated design concept for the ground and the ARMG railway foundation is proposed.A new structure consisting of the elastic foundation beam+steel grid reinforced cushion+adjustable bearing system is adopted based on settlement and FLAC3D model calculation results,which can take full advantage of the preloaded foundation's benefits,reduce differential settlement and simplify the modification of ARMG railway foundation.Compared with pile foundation railway beam,this new structure can save 18% engineering cost,and compared with rail sleeper ballast the maintenance requirements can be reduced.
