About the author:

China First Highway Engineering Co., Ltd., Beijing 100024, China

Abstract:

Based on Zhanhua-Linzi Highway Yellow River Bridge, this bridge is a double-pylon anddouble-plane steel-concrete composite girder cable-stayed bridge with a main span of 442m. The wholeincremental launching construction method of steel-concrete composite girder is adopted in the project,the assembling and incremental launching platform is built on the side span, the steel girder is assembledand the concrete deck is laminated, and the segmental composite girder assembly is completed on theassembling platform, sliding to push-off area and setting up temporary push-off abutment in push-off area.The incremental launching construction method solves the problem of large-section steel girder in-situhoisting section due to the non-navigation of the middle and lower reaches of the Yellow River, saves theconstruction land, reduces the assembly operation area, reduces the difficulty of management, reducesthe risk of high-altitude operation, and improves the construction efficiency. The integral incrementallaunching construction technology of steel-concrete composite girder not only ensures the safety in theconstruction process, but also reduces the project cost and shortens the construction period.