Construction Technology Study About Oblique Curved Continuous Prestressed Concrete Box-girder Bridge

Yanchi East Interchange overpass which is one part of Ningxia yanzhong expressway as the basis, with oblique, curved continuous bridge the theoretical basis,this paper focuses on oblique curved continuous prestressed concrete box-girder bridge design and construction of key technologies.In this paper, by analyzing the mechanical characteristics about the oblique, curved box-girder bridge and summarized force characteristics about oblique curved continuous prestressed concrete box-girder bridge, the kinds of the mechanical characteristics of the bridge type is described in detail.The current bridge engineering design, oblique, curved bridge over the main means of analysis and calculation procedures for the main stakeholders in order to print. oblique curved continuous prestressed concrete box-girder bridge structure, force a complex, three-dimensional mechanical characteristics significantly. If using the traditional methods of analysis, its analysis less accuracy, and difficult to bridge the real structure of such reaction force, so this paper Liang grid method as the main analytical tools. This paper describes the combination of a bridge beam analysis program grid method of the basic principles and use.Through theoretical analysis, this paper Yanchi East Interchange overpass, detailing the design features of the bridge, using beam lattice method for analysis of the bridge study found oblique curved continuous prestressed concrete box-girder bridge structural analysis of the results, further validation of the aforementioned the theory is correct.According to oblique curved continuous prestressed concrete box-girder bridge structural analysis of the conclusions, focusing on the type of bridge design and construction of countermeasures. In terms of design focus from the overall structural design, support system design, pre-stressed system design, general steel structure design, and the lower part of the special design aspects studied in detail. During the construction, the focus from the bracket layout, templates, steel fabrication and installation, concrete pouring, pre-stressed system, construction, and stent removal in areas such as a more detailed study.Through a systematic research and analysis on the oblique curved continuous prestressed concrete box-girder bridge, It Provides the results of reference for the type of bridge design and construction.