The railroad bridge has 3 main types: sphere have trough the rubble (three slices), the sphere has ties set directly to the beams and the sphere has ray put directly onto a spherical surface (no sleepers and rocks balát). 4.1.2.1. the sphere has a stone trough balát: Pros, cons: -Types of spherical surface with macadam trough the creation of độcứng between the road and the requested ensure smooth running ship pros, minimize the shock force. -In case the demand placed on the curve by the type of this sphere allows to create Super high by changing the thickness of the layer of rubble. -Primary đỉểm sphere actively with this type is increases the static load of the sphere and increase height the architecture of the requested are now less used (especially in the sphere of steel Orchestra).4.1.2.2. the earthly spheres (ties placed directly on beams):. Pros, cons: -Sphere type has a simple structure, reduce static load surface height and architecture of the bridge should be applied quite phổbiến. -The main downside is hard to guarantee the uniformity of stiffness between the road on the bridge and In addition to requested often causes shock loading and loud noises when the ship. -Difficult to create super high when demand placed on the curve by4.1.2.3. sphere has ray put directly onto a spherical surfaceb. Pros, cons: -Do not have trough the rubble and sleepers should this sphere-style architecture and height reduction static loads of texture rhythm, saving maintenance costs and materials for repair trough the crushed stone sleepers. -Concrete bridge beams shape simple, easy installation because the removed gravel trough ledges. -The downside is made more complicated when rail link run speed boat as quickly. -Quiet Mode upon a boat on the sphere with sphere have trough the rubble. -For automotive and railway have gone public this sphere type are quite appropriate.
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