Aerodynamic stability of non-symmetrically erected suspension bridge girders

An aeroelastic model of a suspension bridge at its deck erection stages was wind tunnel tested. With a shallow streamlined box as its deck cross-secti on, the flutter-type instability was the main concern. An interesting obser vation was that the bridge was found to be more stable when the suspended d eck was extended in a non-symmetric manner as opposed to the traditional sy mmetric erection schedule. It is possible to use non-symmetric deck configu rations as a stabilizing measure during the deck erection. (C) 1999 Elsevie r Science Ltd. All rights reserved.