Frame bridge

Abstract

The invention relates to a frame bridge, comprising a plurality of undergoing bridge segments connected in turn along the longitudinal direction of the bridge top rail line, wherein the side wall surfaces of each undergoing bridge segment are perpendicular to the transverse direction of the bridge top rail line; the side wall surfaces of the undergoing bridge segments are perpendicular to the transverse direction of the bridge top rail line. The underpass passes through the frame holes of each underpass section in turn, and at least the side walls near the inlet and outlet of the underpass arestaggered with respect to the adjacent side walls. As that wall surface of each side wall is set to be perpendicular to the transverse direction of the track line at the top of the bridge, and the side walls near the inlet and outlet of the underpass traffic lane are staggered with respect to the adjacent side walls, The utility model is convenient for passing through the traffic lane smoothly, meanwhile, the railway sleepers of the bridge top track line can be laid on the frame bridge completely, so as to avoid the situation that the two ends of the railway sleepers of the bridge top track line are respectively placed on the frame bridge and the roadbed with large rigidity difference, and the train running irregularity is avoided. Compared with the special-shaped frame bridge, the framebridge provided by the invention adopts a regular frame structure, and has the advantages of simple structure, definite stress, convenient construction, and small maintenance workload after operation.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a frame bridge. Background technique [0002] Such as figure 1 , at present, when a high-grade railway crosses a low-grade railway in the design and construction, the oblique frame is generally used directly as the reserved channel for the underpass railway. The biggest disadvantage of this scheme is that: due to the angle Smaller, and the thickness of the top slab of frame bridge 1 is only 80cm. In the long range on both sides of frame bridge 1, one end of the railway sleeper is placed on frame bridge 1, and the other end is placed in the roadbed. Due to the large difference in stiffness between the two or uneven settlement This situation should be avoided in the design of high-speed railway bridges and culverts. Contents of the invention [0003] The embodiment of the present invention relates to a frame bridge, which can at least solve some defects o...

AI Technical Summary

Problems solved by technology

[0002] like figure 1 , at present, when a high-grade railway crosses a low-grade railway in the design and construction, the oblique frame is generally used directly as the reserved channel for the underpass railway. The biggest disadvantage of this scheme is that: due to the angle Smaller, and the thickness of the top slab of frame bridge 1 is only 80cm. In the long range on both sides of frame bridge 1, one end of the railway sleeper is placed on frame bridge 1, and the other end is placed in the roadbed. Due to the large difference in stiffness between the two or uneven settlement It affects the stability of train running, which should be avoided in the design of high-speed railway bridges and culverts

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