Design on launching nose for incremental launching bridge construction across Ningbo East Station

During the bridge incremental launching,the launching nose allocation secures a crucial position in reducing girder internal force and increasing the incremental launching span.Pertaining to the incremental launching bridge construction across Ningbo East Station,a launching nose design method is proposed.By establishing the mechanical model on launching nose,the integrated structural analysis is conducted via computer simulation.Accordingly,the maximum stress and deformation of the guide beam and the steel box girder are solved to satisfy the structural loading requirements.Meanwhile,due that the steel box girder and launching nose cannot be stably guided through the temporary pier,a hanger plate in launching nose bottom is adopted.Therein,this approach provides a reference to launching nose design during incremental launching.