CONSTRUCTION STAGE ANALYSIS OF CABLE STAYED BRIDGE

Abstract

Cable-stayed bridges are widely used as engineering structures to across long span bridges. In the analyses of Cable-stayed bridges assumed that the structure is built and loaded in a second. This type of analysis does not always give the perfect results. Because, during construction of the structures continue along time and due to loads such as equipment and form travel and others may be changed during this period. Therefore, construction stages and time dependent material properties should be considered in the analysis to get the perfect results.The aim of the study to performing the construction stage analysis of cable-stayed bridge using software. Geometric non-linearity are taken into consideration in the analysis using P-Delta (∆) large displacement criterion. Time dependent material properties such as compressive strength, aging, shrinkage and creep for concrete, and relaxation for steel are considered. The bridge structures at different construction stages has been examined. Two different models with and without construction stage is to be carried out and the results are compared with each other. In this study the variation of the displacement and internal forces such as bending moment, axial forces and shear forces for deck and towers. The shape of the bridge can then be achieved and constructed.