Steel truss tie bar arch bridge combined type tie bar

Abstract

A combined tie bar of steel truss tie bar arch bridges relates to a tie bar applied to steel truss tie bar arch bridges, and is composed of a steel bar piece and an auxiliary inhaul cable. Two ends of the auxiliary inhaul cable are anchored on the nodes at the end parts of the steel bar piece. The steel bar piece is provided with a tie bar holding shaft. The bar is composed of the steel bar piece and the auxiliary inhaul cable, can function as a prestressing steel structure tie bar, integrates advantages of rigid tie bars and flexible tie bars, and improves the structural integrity. The auxiliary inhaul cable exerts a certain pressure on the rigid tie bar to counteract partial pull of the rigid tie bar so as to effectively reduce bar internal force of the rigid tie bar, diminish the component scale, reduce the steel consumption and reduce construction cost. Further, the inhaul cable is placed on the tie bar holding shaft to reduce the sag due to self weight down warping such that the nonlinear influence because of the sag of self weight down warping is weakened.

Description

technical field [0001] The invention relates to a tie rod used in a steel truss tie rod arch bridge. Background technique [0002] At present, there are generally two types of tie rods in tie-bar arch bridges at home and abroad: ① Rigid tie rods generally use steel rods. It is convenient to connect with the bridge deck system, but when the tension of the tie rod is large, the cross section of the rod is too large and the component is too heavy, which makes it difficult to manufacture and install the rod, consumes a lot of steel, and is less economical; ② Flexible tie rods are generally used High-strength parallel steel wire bundles or steel strands, the tie rod material has high strength, but the tie rod and the bridge deck system cannot be connected, the bridge deck system presents a pure suspension structure, and the structural integrity is poor. Also do not have the combined tie bar of steel rod member+flexible lanyard at present. Contents of the invention [0003] Th...

AI Technical Summary

Problems solved by technology

It is convenient to connect with the bridge deck system, but when the tension of the tie rod is large, the section of the rod is too large and the component is too heavy, which leads to difficulties in the manufacture and installation of the rod, a large amount of steel, and poor economic efficiency; ② Flexible tie rods are generally used High-strength parallel steel wire bundles or steel strand bundles, the tie rod material has high strength, but the tie rod and the bridge deck system cannot be connected, the bridge deck system presents a pure suspension structure, and the structural integrity is poor

There is no combined tie rod with steel rod + flexible lanyard

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