ABSTRACT
This chapter discusses the methods for determing the cable forces and describes a presentation of the cable force adjustment. It explores a simulation method for a construction process of prestressed concrete cable-stayed bridge and introduces a construction control system. The cable is placed in a way that the new girder element is positioned correctly, with a view to having the required profile when construction is finished. In the optimization method of determining the stresses of the stay cables under permanent loads, the criteria are chosen so the material used in girders and pylons is minimized. During the construction or service stage, many factors may induce errors in the cable forces and elevation of the girder, such as the operational errors in tensioning stays or the errors of elevation in laying forms. Segmental construction techniques have been widely used in construction of cable-stayed bridges.
