Through the application of the peak pushing craft in frame bridge in Taiyuan Northwest Central Expressway,it introduced the characteristic,difficulty and control main point of this craft which we should pay attention to construction and supervision process.

Combined with practical engineering of west bridge in Zhujiang bridge,the author separately illustrates the construction technology and time-limit of traditional bearing changing method and improved bearing as sideway,compares the two bearings,and introduces the selection of new-type bearing,in order to accumulate experience for bridge incremental launching construction.

The reasonable arrangement of the launching nose will be critical to the smooth proceeding of incremental launching construction of the whole bridge.

The main shipping channel bridge and the non-navigable span approach bridges of the Bridge respectively make use of the long span continuous composite arch bridges and continuous composite box girder bridges that are all erected by the multi-point and synchro incremental launching construction technique.