Bridge bearing

　　Abutment is a structure between the superstructure of bridge and pier.

　　Fixed support:vertical force,lateral force

　　Movable support:vertical force

　　According to the material classification:simple support,steel support,reinforced concrete support,rubber support

　　Classified by function:normal support,special support

　　Simple supported beam bridge--one end fixed,the other end activity.

　　Continuous beam bridge--each link only has a fixed support,the rest of the activities.

　　Taken the simple support-at the end of beam and pier top surface between cushion to support the upper structure.Cushion felt are available,and asbestos board or lead plate etc,using the characteristics of the material is soft and has a certain strength to adapt to the rotation of the beam end is tiny and telescopic deformation,and protection under load.Only suitable for span highway Bridges under 10 m and 4 m below the railway slab bridge.