Beam-arch consolidated triangular arch bridge

Abstract

The invention discloses a beam-arch consolidated triangular arch bridge. The beam-arch consolidated triangular arch bridge mainly comprises an arch rib (1), a main beam (2), flexible lifting rods (5)and arch rib transverse braces (6); the flexible lifting rods (5) are placed between the arch rib (1) and the main beam (2), wherein a rigid diagonal rod assembly is also arranged between the arch rib(1) and the main beam (2); the rigid diagonal rod assembly mainly consists of two rigid diagonal rods (3) in an inverted V shape; that is to say that the two rigid diagonal rods (3) and the main beam(2) form a triangular structure; and a diagonal rod cross-link (4) is also arranged between the two rigid diagonal rods. According to the beam-arch consolidated triangular arch bridge, the arch rib and the main beam are restricted by using a triangle; and meanwhile, the linear stiffness of the main beam is enhanced; and therefore, the integral rigidity of the structure is greatly enhanced; and the problem that a see-saw effect of the arch bridge is obvious under the action of half-span load can be greatly solved.

Description

technical field [0001] The invention belongs to an arch bridge system, in particular to a beam-arch consolidated triangular arch bridge. Background technique [0002] Arch bridges have a long history. As early as 1300 BC, the prototype of stone arch bridges appeared in Mycenae, Greece. In ancient China, stone arch bridges represented by Zhaozhou Bridge were the best bridges in the world. Today, the arch bridge has already become a very widely used bridge type on highways in our country, and it is precisely because of this that the research on the arch structure has great practical significance. [0003] The difference between an arch bridge and a girder bridge is not only in appearance, but more importantly, in terms of mechanical performance. It can be seen from the knowledge of mechanics that under the action of vertical load, the beam will only be subjected to the vertical reaction force at the support, while the arch will be subjected to the joint action of horizontal a...

AI Technical Summary

Problems solved by technology

In the present invention, triangles are used to constrain the arch rib and the main girder, and at the same time, the linear stiffness of the main girder is increased, so that the overall stiffness of the structure is greatly improved, and the problem of obvious "seesaw" effect when the arch bridge is subjected to half-span load is effectively solved ; and the load acting on the main beam follows the following force transmission path: main beam→flexible suspender / rigid diagonal bar→arch rib→foundation

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