New Evolution of Prestressed Concrete Cable-stayed Bridge Construction Control

The control of geometry and internal forces in the cable stayed prestressed concrete bridge is very important.This paper introduces the new progress of this control in China for the past few years,using adaptive control idea of modern engineering control theory to form the control system,which makes a breakthrough in the structural parameter identification and in real time camber modification of the deck at site.Several long span prestressed concrete(PC) cable stayed bridges have been successfully applied with the method.