Application of homemade gantry crane with high-low legs in the construction of great-span bridges;

Design and checking calculation method to gantry crane foundation of a beam prefabricate plant;

The article discusses a practical and economic construction method to lay down the flow pipe with a special de- signed hanger and the gantry crane at the bottom of the cloaca,when the construction working face is too limited to use the crane to lay down the large-diameter pipes directly during laying down the construction.

Base on ANSYS program,the Tianjin Cihai Bridge ferries wheel tower leg hoisting gate frame was analyzed,the computational results were compared with the experimental results,the fact indicates establishing the finite element model may be a good way to analyze gate stress situation,providing the theoretically basis for the construction control.

The design of beam and plate precast field portal jib crane

Combined with the project general situation,it introduces the whole setting of portal jib crane,represents the construction process and methods of using portal jib crane batch by batch,consolidation large-tonnage steel box girder,steel girder spanning by using drag put up girder,so to increase the construction progress and construction quality.