Abstract:The tie of the bunsha bridge is a flexible cable with a length of 518 meters. This paper introduces the principle of the selection of the tie, the comparison of the program and the construction process of the twisted outline stranded tie.

Abstract:

Abstract:It introduces the testing and analysis of cross-section stress and deflection after tensioning of space curve prestressing cables for large-span curvilinear girder bridges, verifies the values of each parameter in the calculation of prestressing bundles at the design stage, and evaluates the cross-section stress and deflection of curvilinear prestressing cables after stringing of holes of individual cables in the course of construction.

Abstract:This paper introduces the overall design concept of Nanjing Second Bridge Yongzhuang large hub interchange, mainly introduces the design and construction characteristics of the viaduct within the interchange.

Abstract:It introduces the application of the advanced span-by-span casting construction method of mobile molding frame on the 5×50m continuous box girder bridge of the North Approach Bridge of Beicha Bridge of Nanjing Second Yangtze River Bridge. The method is highly automated and can effectively shorten the construction period. It also discusses the setting of pre-arch and the design problems related to the construction of this method.

Abstract:This paper briefly introduces the working principle of ZLD100 automatic continuous lifting system and its application process in the main span girder lifting project of Guijiang Third Bridge.

Abstract:This paper mainly introduces the form of steel pipe concrete column prestressed beam combination structure, and the construction process of this structure and prestressed concrete double beam structure node processing.

Abstract:

Abstract:In the temperature change, concrete contraction, creep and load and other factors, the bridge beam length will change, so that the beam end displacement, in order to adapt to this displacement and keep the bridge traveling smoothly, it is necessary to set the bridge expansion device. With the rapid development of China's transportation, highways, elevated roads, overpasses, the construction of a large number of highway bridges, the increase in the amount of vehicular traffic, vehicle speed increases, the vehicle's load in the growth of people's comfort on the road and other requirements are more and more demanding, so the requirements of highway bridges, expansion and contraction of the device is also more and more demanding!