Pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and tensioning technology

Abstract

The invention relates to a pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and a tensioning technology. The pre-tensioning method plate-beam rail movable type steel transverse beam integer tensioning device comprises a tensioning end fixing steel transverse beam, an anchoring end fixing steel transverse beam, steel strands, beam restraining table bases arranged between the tensioning end fix fixing steel transverse beam and the anchoring end fixing steel transverse beam, a force transmission column arranged on one side of each beam restraining table base, a track movable type platform arranged on one side of the tensioning end fix fixing steel transverse beam and up-and down adjusting steel plates, wherein the up-and-down steel plates are connected on the tensioning end fixing steel transverse beam, the anchoring end fixing steel transverse beam and a lifting jack moving transverse beam in a buckling mode, and each steel strand is provided with two dual-connecting elements, a single connecting element and three sections of precision rolling twisted steel bars. The pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device is further provided with a pre-tensioning plate lifting device. The pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device can conduct construction on multiple beams simultaneously, saves materials, is safe, reliable, capable of being used in multiple times, suitable for construction of all bridge types, simple in operation, continuous in construction and suitable for construction of all beam-plate types, and improves effects. The pre-tensioning plate lifting device is capable of rotating at 360 degrees, storage of movable beams is convenient, occupation of a crane is reduced, and efficiency is improved.

Description

technical field [0001] The invention relates to a pre-tensioned hollow slab girder tensioning equipment in the field of bridge construction machinery and equipment, in particular to a pre-tensioned slab girder track movable steel beam integral tensioning device and a construction process thereof. Background technique [0002] In the construction of traditional pre-tensioned hollow slab beams, single-piece and single-root tensioning equipment is generally used, such as figure 1 As shown, the single-piece single-root tensioning equipment consists of a fixed steel beam 3 at the tensioning end, a fixed steel beam 4 at the anchoring end, a beam-making pedestal 2, an anchor 12, a jack 5-1, and a steel strand 7. Among them, Beam-making pedestal 2 is arranged between the fixed steel beam 3 at the tensioning end and the fixed steel beam 4 at the anchoring end, anchorage 12 is arranged on the outer sides of the fixed steel beam 3 at the tensioning end and the fixed steel beam 4 at the...

AI Technical Summary

Problems solved by technology

[0003] ①The stretching time is too long

And during the stretching process, other processes cannot be constructed, which restricts the production capacity of the beam yard and affects the construction progress;

[0004] ② When cutting the steel strand, it is necessary to consider the length of the steel strand between the fixed steel beam at the tension end of each beam and the pedestal. This part of the steel strand is very wasteful and increases the cost;

[0005] ③Due to the single-piece single-strand tensioning, the tension sequence of each steel strand is different, the accuracy of the oil pressure gauge, and the human error of the operator will cause uneven force on the steel strand;

[0006] ④ Due to the use of anchors for anchoring, the end faces of the clips may not be even during use, and accidents such as steel strand slipping and clips flying out are likely to occur when the force is applied, and the safety is poor

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