Simultaneous construction type wide-flanged guyed traveler

Abstract

The invention discloses a simultaneous construction type wide-flanged guyed traveler, which comprises a front transverse beam, a middle transverse beam and a rear transverse beam, a main longitudinal girder and a secondary longitudinal girder are sequentially connected among the front transverse beam, the middle transverse beam and the rear transverse beam, the two ends of the middle transverse beam and the rear transverse beam respectively extend to the outer side of the main longitudinal girder so as to form a wide-flanged board casting platform, the two ends of the middle transverse beam are respectively fixedly connected with a C-shaped hook, the middle transverse beam and the rear transverse beam are respectively fixedly connected with a square shear-resisting column, and the shear-resisting column extends to a positioning hole arranged at the joint of an inclined web plate of a bridge body and a bottom plate.A thrust system of the invention is simple in construction, clear in stress and strong in maneuverability, can give full play to the local bearing capacity of high-strength concretes, and completely meet the construction needs; and because the construction period of each cantilever casting section is shortened by 2 to 3 days, thereby improving the construction speed and shortening the construction period of each cantilever casting section.

Description

technical field [0001] The invention relates to a construction process of a wide-flange box girder of a bridge with a cast-in-place section, and in particular belongs to a wide-flange synchronously constructed drag cable hanging basket. Background technique [0002] Generally, two methods are used for the construction of wide-flange main beams: one is post-casting of wide-flange cantilever. Although this method reduces the design difficulty of C-shaped hooks, it needs to add two hanging baskets for post-casting construction of flange plates on both sides. The construction period of the cycle segment will be extended, and the input of manpower and materials will be increased. The second is to design a powerful C-shaped hook, but the super-long cantilever adds great difficulty to the design of the C-shaped hook. For concrete cable-stayed bridges suspended by hanging baskets, the cantilever of the flange plate is generally not large, mostly within 1.5m, but this bridge is 5.7m...

AI Technical Summary

Problems solved by technology

[0002] Generally, two methods are used in the construction of wide-flange girders: one is post-casting with wide-flange cantilever. Although this method reduces the design difficulty of C-shaped hooks, the It is necessary to add two hanging baskets to carry out the post-casting construction of the flange plates on both sides, which will prolong the construction period of the cycle section and increase the input of manpower and materials

The second is to design a powerful C-type hook, but the super-long cantilever adds great difficulty to the design of the C-type hook

[0003]The general guyline basket shear thrust system and the guyline surface are in the same vertical plane. From the design point of view, this thrust system is perfect , from the construction point of view, the installation of this thrust system is quite difficult; it has the following disadvantages: ①Firstly, the reserved hole of the precision-rolled rebar passes through the concrete of the bottom plate, which may easily cause insufficient precision of the plane position of the reserved hole and a large inclination , not meeting the installation quality requirements; ② Due to the limitation of the operating space, it is difficult to tighten the screw and nut of the thrust system, and it is also inconvenient to connect the oil pipe of the jack; ③ The installation error of the thrust system is relatively large in actual construction, so it has to be installed Add a steel backing plate to the front end of the screw, or remove the screw and nut and directly replace it with a steel backing plate

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