Analysis on Scheme Design and Actual Testing for the Demolition of Steel Truss Bridge in the High Service Period
The jacking demolition of the bridge has higher requirements on the stiffness and stability of the beam.In order to ensure the smooth demolition of the steel truss bridge in the high service period,this paper takes the Pearl River East Bridge as an example,and designs an overall demolition scheme of converting the system of the simply supported beam to the continuous beam and then jacking.At the same time,the reinforcement measures in the system transformation process and the control measures in the jacking process are described in detail,and the vertical displacement and stress state of the steel truss beam under different conditions are analyzed in combination with the specific data of the on-site monitoring and measurement.The results show that the displacement and stress of the bridge structure during the demolition process are within the controllable safety range,and the scheme can meet the smooth demolition of the main body.
simple to continuousjacking demolitionprogram designconstruction monitoring
万方数据
维普
