Cast-in-situ beam assembled large-diameter steel pipe support structure and construction method thereof

Abstract

The invention relates to the technical field of cast-in-situ beam support, which discloses a cast-in-situ beam assembled large-diameter steel pipe support structure, comprising a steel pipe column, ahorizontal transverse connection and a vertical inclined connection. A link plates are arranged on that side walls of both end part of the steel pipe upright column, the single or multiple vertical steel pipe upright columns are arranged side by side and connected with each other superimpose, the upper part and the lower part of the steel pipe upright columns are connected with the A connecting splint group through the A link plate, and the A connecting splint group is connected horizontally and horizontally. Between that two parallel of the horizontal transverse connection there is a verticaloblique connection, one end of the vertical oblique connection is connected with an A connecting plate of the upper part of the steel pipe column through a B connecting splint group, and the other end of the vertical oblique connection is connected with an A connecting plate of the lower part of the steel pipe column through a B connecting splint group. And a construction method of the steel pipesupport structure. The invention can adjust the arrangement direction of the steel pipe support upright column and the distance between the steel pipe support upright column and the pier column to adapt to the construction of cast-in-place beams with different spans and different radii. It can form standardized structure and save construction cost.

Description

technical field [0001] The present invention relates to the technical field of supports for cast-in-place beams, in particular to a cast-in-place beam-assembled large-diameter steel tube support structure that replaces traditional full-wall steel pipe scaffolding or welded steel pipe supports as supports during the construction of cast-in-place beams and construction methods. Background technique [0002] With the vigorous development of my country's highway infrastructure, bridges account for an increasing proportion of it, and more and more bridge superstructures adopt the form of cast-in-place beams. [0003] The traditional construction method of cast-in-place beams is to use full-height steel pipe scaffolding or welded steel pipe supports as supports for construction. The construction of cast-in-place beams with full-height steel pipe scaffolding is prone to irregular erection and messy appearance of the supports; operators hold long and heavy poles to manually erect s...

AI Technical Summary

Problems solved by technology

The construction of cast-in-place beams with full-height steel pipe scaffolding is prone to irregular erection and messy appearance of the supports; operators hold long and heavy poles to manually erect scaffolds section by section, which is labor-intensive and easy to cause fatigue, and is prone to incidents of poles and even personnel Falling accidents; tall and full hall supports take a long time to assemble and disassemble, which has a great impact on the construction progress; especially the supports on steep hillsides need to face large-scale excavation of the mountain, which seriously damages the stability of the mountain as the foundation of the scaffolding, and the cost is quite high

Welded steel pipe brackets are used for cast-in-place beam construction. Each steel pipe column, cross-connection and oblique connection needs to be cut and welded on site, which takes up too many human resources, cutting, welding and lifting equipment shifts, and takes a long time to erect. Affects the construction progress; each steel pipe connection must be welded on site, and too many ladders and welding work platforms need to be erected during the erection process; due to the on-site welding, many places must be welded by vertical welding and overhead welding , the welding construction is difficult, and the quality of the weld seam is difficult to guarantee, which ultimately leads to the quality of the steel pipe support not being effectively guaranteed; in addition, the steel pipe is directly flame-cut during the dismantling process of the welded steel pipe support, and the cutting will cause the end of the steel pipe to be uneven And steel pipe skin damage, when the next construction site is reused, the source of danger will be buried, and the safety and quality cannot be guaranteed, so the number of times it can be reused is small. It is necessary to continuously replenish steel pipes and discard unusable steel pipes. High cost and not conducive to environmental protection

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