Highway bridge rubber bearing role of bridge bearings and bearing arrangement is part of the bridge structure support. Its role is to load on the bridge structure passing through the cradle to the pier. Supports role mainly in the following three aspects: (1) make clear the role of the reaction force to the specified location pier, and will focus on the reaction force spread to a large enough area to ensure safe and reliable pier work . (2) ensure that the fulcrum bridge structure in accordance with the conditions specified in the calculation schema deformation. (3) ensure the bridge structure on the pier fully fixed position, without slipping. Classification Section bridge bearing or not bearing a fixed classification can be divided into a fixed bearing and bearing activities. Fixed support plays a role dumplings, which allows to rotate freely in the vertical plane along the line of the bridge structure. Highway bridge rubber bearings bearing activities in addition to rotate freely, it should also allow live load and when the temperature changes, the longitudinal end of the beam can be moved horizontally. Simply supported beam bridge, trying to calm their style should be set to a fixed bearing at one end and the other end to set bearing activities. For Railway Girder Bridge, due to the braking force greater impact on the fixed bearing and bearing activities shall be arranged in accordance with the following principles: (1) on the bridge structure, the best compression to make the bottom chord beam under the action of braking force and can offset part of the vertical load generated tension in the lower chord; (2) to the pier, it is better to let braking force direction toward the center of the pier, and pier top of concrete or mortar rubble pressure under braking force instead of tension; (3) for the abutments, the best role so that the braking force direction toward the river bank, so that the top of the abutment concrete or mortar rubble under pressure, and to balance the rear part of the station filling pressure. Highway bridge rubber bearing according to these principles, "the provisions of the railway bridge design" provides fixed bearing arrangement should be located on a slope at the lower end; in the vicinity of the station should be located near the station at one end; in the interval level trail should be located at the front end heavy vehicle direction. When the above provisions contradict each other, the level of force should be a greater impact on the situation set up, which should meet the requirements of the first ramp on. For multi-span simply supported beam bridge, for the longitudinal horizontal force evenly distributed on each pier should not be fixed bearing two adjacent holes located on the same pier. For multi-span girders bridge road, usually spans two adjacent fixed bearing is not arranged on the same pier. Highway bridge rubber bearings when high piers, in order to reduce the level of action, may be considered in its two events across the arrangement of the adjacent seat; set on the ramp for the bridge, should also be arranged in the lower fixed bearing the pier. Special wide roads and bridges, should be able to set the longitudinal and lateral movement of the movable carriage. Anchoring cantilever bridge across fixed bearing should also be set at one end and the other end to set bearing activities. Bearing porous cantilever bridge beams hung with the same arrangement of a simply supported beam. Continuous beam bridge linking each only a fixed support. In order to avoid the beams end joints too large, fixed bearing should be placed on every intermediate supports linking, such as where the piers during high stress conditions because of the foundation or other reasons, you should consider to avoid, or to take special measures avoid oversized pier body. 

keywords: Rubber bearings, bridge rubber bearings, rubber bearing highway bridge,