Three-point walking single cable face cable-dragging suspension basket

Abstract

The invention discloses a three-point travelling single-cable-plane guyed travelers, which is characterized in that: a top longitudinal beam is formed by assembling bailey beam and is arranged at a web plate at both sides of the top surface for main beam; the guyed longitudinal beam is a braced girder structure formed by assembling and welding profile steel and is arranged at the bottom part of central girder for the bridge; a travelling hanging frame is fixed on the top longitudinal beam which is connected with a front lower beam of the guyed longitudinal beam by the front suspension; shifting forward; horizontal jack is respectively arranged on two longitudinal beams and a guyed longitudinal beam, the three points are used for incremental launching. The invention has the advantages of realizing three point travelling using two front suspensions of the top longitudinal beam and the rear suspension of the guyed longitudinal beam, lowering structural facilities such as edge longitudinal beam specially designed for travelling, having small weight ratio for the travelers and the beam body section, having better economic index compared to the same kind of guyed travelers, using the rear suspension travelling frame arranged on the beam body completing pouring to support the guyed travelers, forming a stable three-point system due to two top longitudinal beams suspending the front lower beam, reaching stably and quickly shifting forward and decreasing the weight of the travelers.

Description

technical field [0001] The invention relates to a three-point running single-cable-surface stay cable hanging basket, which belongs to the technical field of cantilever cast bridge structures. Background technique [0002] Prior art, such as the utility model patent (ZL02289507) of the patent of the single-cable surface guyed hanging basket, the structure is: its bottom basket adopts a space-strength composite steel structure welded by steel plate beams and section steel, including vertically placed Two main longitudinal beams in the middle of the bottom basket, two side longitudinal beams placed longitudinally outside the two main longitudinal beams, a front crossbeam placed transversely at the front of the bottom basket, a rear crossbeam placed transversely at the rear of the bottom basket, and a The distributed longitudinal beam between the main longitudinal beam and the side longitudinal beam and the outer side of the side longitudinal beam, and the distribution beam bet...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is aimed at the defects existing in the prior art, one because the single-point support formed by the single-row stay cable guy cable at the front end of the single-cable guy cable hanging basket, in the construction process due to concrete pouring Left and right asymmetry, the beam body deforms back and forth, which is unfavorable to the construction quality and the control of the beam body line shape; second, the existing single-cable surface hanging basket is separately equipped with a beam moving machine, side longitudinal beams, etc. The structure does not make full use of the characteristics of the single-cable surface hanging basket, and the structural system is complex

A top longitudinal beam is installed on the top of the two webs of the main girder. During the construction process, the top longitudinal beam solves the difficulty of adjusting the elevation of the two flanges when the single-cable surface pulls the hanging basket to formwork, and the hanging basket is twisted due to asymmetrical loading during construction. Tilting and other problems, at the same time, the top longitudinal beam is also used as a walking guide beam of the hanging basket, which improves the stress state during the forward movement of the hanging basket. Therefore, the running of the hanging basket is more stable and safe

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