Long-term monitoring of a hybrid cable-stayed bridge

Abstract

Various methods have been employed for health monitoring of cable-stayed bridges. It is of great interest and importance to choose the appropriate methods and instruments in terms of reliability, durability and long-term costs. This paper provides a case study of the in-service monitoring of a recently-built long span hybrid cable-stayed bridge, Queshi bridge, in southern China. Three parameters, namely the cable force, main structure deformation and vibration, were monitored with different methods at regular intervals in a span of a few years. The results are very satisfactory and encouraging, and provide vital healh information of the bridge to the transportation authority. © 2005 Springer.