Highway Bridge Jumping Disease Prevention And Control Technology

This paper summarizes the cause of jump at bridge abutment and damage degree, and researches the jump mechanism in the segment having bridge abutment slab and not having bridge abutment slab, and puts forward the trajectory equation when the vehicles jump. By use of elastic-foundation theory, the paper analysis the slab in transition segment, and comes up with the calculating method of deformation and stress of the slab under the concentrated and uniform load, and analysis the settlement of subgrade behind the abutment.Combined with the engineering practice, the author puts forward the synthetical prevention and cure technique, construction technology and controlling quality measurement, and discusses preventing and curing the jump disease in the bridge abutment of the highway.