Semi-rigid suspended ribbon arch bridge and construction method thereof

Abstract

The invention relates to a semi-rigid suspended ribbon arch bridge which comprises abutments, a bridge deck slab and a supporting frame. Steel strands are arranged below the bridge deck slab. The twoends of each steel strand are fixedly connected with the two abutments. Each steel strand is provided with multiple connecting pieces at intervals. Each connecting piece comprises an upper bent buckleplate and a lower bent buckle plate, each steel strand is tightly sleeved with the corresponding upper bent buckle plates and the corresponding lower bent buckle plates, and the bridge deck slab is locked to each connecting piece through a locking device. The supporting frame comprises arch ribs fixedly connected with the abutments. Auxiliary ribs are fixed to the arch ribs in the length direction of the bridge deck slab. Multiple cross braces are fixed between the two auxiliary ribs at intervals. Lap joint pieces are fixed to the lower ends of the lower bent buckle plates above the cross braces. Each lap joint piece comprises an arc-shaped bottom plate and fixing plates. Each lower bent buckle plate is fixedly connected with the upper ends of the corresponding fixing plates, and the periphery of the upper end of each arc-shaped bottom plate is fixedly connected with the lower ends of the corresponding fixing plates. The lower end faces of the arc-shaped bottom plates are tightly attached to the cross braces, and the bridge deck slab of a suspended ribbon structure is in lap joint with the supporting frame of an arch structure through the connecting pieces.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a semi-rigid suspension arch bridge and a construction method thereof. Background technique [0002] Suspension bridges are made of very thin concrete deck members assembled on catenary cables. This type of bridge is characterized by its continuous complementary smooth curves, the transmission of internal forces is clear, and the structure of this bridge uses very little material. The Chinese patent with the application number CN201510454255.X discloses a concrete self-anchored suspension bridge with flat arch ribs on the bridge deck. The flat arch ribs are set on the bridge deck of the suspension bridge and connected with the bridge deck and columns by tie rods. By adding convex arch ribs, the neutral line of the self-anchored bridge deck structure section rises, the height of the center of gravity of the bridge deck structure is raised, and a part of the bridge's de...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a semi-rigid suspension arch bridge, and improves its construction method, which can make the bridge deck, abutment and support frame semi-rigidly connected, and can effectively solve the suspension structure It can effectively improve the overall stability of the suspension bridge due to the large difference in rigidity, small relative displacement, and poor energy dissipation between the arch structure and the arch structure.

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