Cantilever pull rod assembled triangular bracket and construction method thereof

Abstract

The invention relates to a cantilever pull rod assembled triangular bracket. The cantilever pull rod assembled triangular bracket comprises a bridge pier column, a triangular bracket, a pore-forming pipeline, an upper pull rod, a lower pull rod and a supporting support, wherein the pore-forming pipeline and the supporting support are embedded before concrete pouring of the bridge pier column, andhorizontal rods, inclined rods and vertical rods are connected and assembled in advance to form the triangular bracket. After concrete pouring and curing are completed, upper and lower pull rods are inserted into the pore-forming pipe, the triangular bracket is hoisted to the upper part of the supporting support and temporarily fixed, and the upper and lower pull rods are tensioned to anchor the triangular bracket to the side wall of the bridge pier column to form the cantilever pull rod assembled triangular bracket. The upper and lower pull rods are inserted into the bridge pier column as connecting pieces to ensure the stress symmetry and stability of the triangular brackets on both sides of the pier column, and the supporting support under the triangular brackets can provide vertical support for the triangular brackets. According to the cantilever pull rod assembled triangular bracket, the structure is simple and convenient to operate, the components can be recycled, the bearing capacity and the stability are high, and the structure has wide application prospect.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to a bridge construction bracket, in particular to a cantilever pull rod assembled triangular bracket and a construction method thereof. Background technique [0002] The bridge bracket is used to support the formwork and bear the construction load when the bridge is poured into 0# block. The traditional bracket pre-embeds a large steel plate in the pier, and the triangular bracket is assembled and welded under the bridge. Buried steel plate welding, but the traditional bracket has high-altitude vertical welding during the construction process, the quality of the weld is difficult to guarantee, and there are safety hazards, and the weld is long, the workload of high-altitude welding is large, and the installation period of the bracket is long. Therefore, it is necessary to study a A bridge bracket that is safe, convenient, sustainable and highly efficient to install. [0003] The cur...

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Problems solved by technology

[0002] The bridge bracket is used to support the formwork and bear the construction load when the bridge is poured into 0# block. The traditional bracket pre-embeds a large steel plate in the pier, and the triangular bracket is assembled and welded under the bridge. Buried steel plate welding, but the traditional bracket has high-altitude vertical welding during the construction process, the quality of the weld is difficult to guarantee, and there are safety hazards, and the weld is long, the workload of high-altitude welding is large, and the installation period of the bracket is long. Therefore, it is necessary to study a A bridge bracket that is safe, convenient, sustainable and highly efficient

[0003] The current bridge brackets are mainly connected to the bridge piers through connectors. For example, the Chinese patent "201721822376.6" discloses a bridge bracket, including a steel sleeve with a snap-in groove, a support plate, an insertion ring groove and an adapter clip. The installation steel sleeve is fixed on both sides of the pier through the inserting ring groove and the matching clip ring, and the support plate is installed on the installation steel sleeve through the card slot, which simplifies the installation process and improves the efficiency. However, it is difficult to install the two sides separately. To ensure the symmetry of the bracket, a protruding ring must be provided at the bridge pier, which protrudes from the pier body and affects the appearance; another example is the Chinese patent "201822039683.8" which discloses a bridge construction support bracket, including the first tie rod, the second tie rod, the first With three tie rods and two support units, this structure does not require pre-embedded steel plates in the pier, does not damage the quality of the pier, and has a high bearing capacity. However, more components bring inconvenience to the installation, and the support units on the ground are in special conditions such as muddy and water surfaces. It cannot be used under certain circumstances, and there are limitations; another example is the Chinese patent "201520263654.3", which discloses a bridge bracket structure, including horizontal support rods, diagonal stay rods, support sleeves, and fixing holes. This structure does not require embedded parts. At the upper end of the bridge pier, the steel sleeve is tightly hooped on the pier, and then the bracket is welded on the bracket, which reduces the support strength and load of the bridge bracket. However, each pier needs to drill a large number of fixing holes. Difficult to promote on a large scale

[0004] In summary, the existing bridge pier bracket structure or application scenarios are limited, or high-altitude operations are required, dangerous and difficult, or time-consuming and laborious. Therefore, it is necessary to research and develop a bridge bracket structure that is easy to install and operate, safe and efficient

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