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High-altitude ultra-large heavy-load special-shaped overhanging cornice beam plate formwork supporting construction method

A construction method and overhanging technology, which is applied in the direction of formwork/formwork/work frame, connectors of formwork/formwork/work frame, building structure support, etc., which can solve the huge amount of materials and labor, and the confusion of the force transmission system , self-heaviness of the frame and other issues, to achieve the effect of safe and reliable force transmission path, clear force transmission path, and uncomplicated structure

Inactive Publication Date: 2021-06-04
THE FOURTH OF CHINA EIGHTH ENG BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a high-altitude, super-large, heavy-load, special-shaped cantilevered cornice beam-slab formwork construction method, which is used to solve the problems of the floor-standing high-support formwork frame in the background technology, such as huge material and labor consumption, chaotic force transmission system, heavy frame body and Disadvantages such as easy instability, horizontal overhanging I-beam + wire rope cable-stayed technical problems such as horizontal overhanging I-beam and wire rope participating in the force, no redundant constraints, no safety reserve, and major safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The construction method of high-altitude super large and heavy-duty special-shaped cantilever cornice beam slab support formwork, including cantilever I-beam, section steel diagonal brace, full hall frame, protective frame, wire rope ring and vertical scissors brace, the construction process is as follows:

[0029] S1: Pre-embed 400mm×400mm×10mm steel plates when pouring concrete on the lower floor. The pre-embedded steel plates are perforated and plug-welded with 2 steel bars with a length of 100mm and φ16 stirrups. The pre-embedded steel plates are parallel to the top of the cast-in-place concrete beam slab.

[0030] S2: The fixed end of the steel cantilever beam is fixed with two U-shaped steel bar pull rings or anchor bolts to the building structure beam slab. Concrete beams and steel bars at the bottom of the slab are welded or bound firmly, and the structural beams are set through the structural beams.

[0031] S3: The outer end of the steel cantilever beam is cab...

Embodiment 2

[0041] The construction method of high-altitude super large and heavy-duty special-shaped cantilever cornice beam slab support formwork, including cantilever I-beam, section steel diagonal brace, full hall frame, protective frame, wire rope ring and vertical scissors brace, the construction process is as follows:

[0042] S1: Pre-embed 400mm×400mm×10mm steel plates when pouring concrete on the lower floor. The pre-embedded steel plates are perforated and plug-welded with 4 steel bars with a length of 200mm and a stirrup of φ16. The pre-embedded steel plates are parallel to the top of the cast-in-place concrete beam slab.

[0043] S2: Fix the fixed end of the steel cantilever beam with 4 U-shaped steel bar pull rings or anchor bolts to the building structure beam slab, pre-embed the U-shaped steel bar pull ring or anchor bolts to the position of the concrete beam and the bottom reinforcement of the slab, and Concrete beams and steel bars at the bottom of the slab are welded or b...

Embodiment 3

[0054] The construction method of high-altitude super large and heavy-duty special-shaped cantilever cornice beam slab support formwork, including cantilever I-beam, section steel diagonal brace, full hall frame, protective frame, wire rope ring and vertical scissors brace, the construction process is as follows:

[0055] S1: Pre-embed 400mm×400mm×10mm steel plates when pouring concrete on the lower floor. The pre-embedded steel plates are perforated and plug-welded with 6 steel bars with a length of 300mm and φ16 stirrups. The pre-embedded steel plates are parallel to the top of the cast-in-place concrete beams and slabs.

[0056] S2: The fixed end of the steel cantilever beam is fixed with 6 U-shaped steel bar pull rings or anchor bolts to the building structure beam slab, and the U-shaped steel bar pull rings or anchor bolts are pre-embedded to the position of the concrete beam and the bottom reinforcement of the slab, and Concrete beams and steel bars at the bottom of the s...

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PUM

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Abstract

The invention discloses a high-altitude ultra-large heavy-load special-shaped overhanging cornice beam plate formwork supporting construction method. Overhanging I-shaped steel, a profile steel inclined strut, an all-round frame, a protection frame, a steel wire rope hanging ring and a vertical diagonal bracing are provided. The construction process flow is as follows: S1, when concrete is poured on a lower floor, 400mm * 400mm * 10mm steel plates are pre-buried, and the pre-buried steel plates are subjected to perforating and plug welding with two to six steel bars which are 100-300mm in length. According to the method, an I-shaped steel coupling beam is installed in the projection range of a vertical rod in the vertical direction on the overhanging I-shaped steel beam, so that the beam bottom, the plate bottom vertical rod, the horizontal rod and the overhanging I-shaped steel beam are stressed uniformly, and the concrete forming quality is good; an overhanging profile steel operation platform which is pulled from the top and supported at the bottom is adopted, so that the stress is clear, the force transmission path is clear, safe and reliable, enough rigidity is achieved, and the structure is not complex; and a turn buckle type steel wire rope is adopted to replace a traditional buckle type steel wire rope for unloading, so that the tightness of the steel wire rope is convenient to adjust, and then the effects of fixing, unloading and reducing the bending moment of the end part of the overhanging I-shaped steel beam can be achieved.

Description

technical field [0001] The invention relates to the technical field of beam-slab formwork support construction, in particular to a construction method for beam-slab formwork support of high-altitude ultra-large and heavy-load special-shaped cantilevered cornice beams. Background technique [0002] In recent years, with the rapid development of the construction industry, the shape of the roof has become more and more diverse, and the requirements for the construction technology have also become higher and higher. The high-altitude super-large and heavy-duty special-shaped reinforced concrete members are cantilevered out of the building by a certain length through the frame beam to achieve the effect of beautiful building shape. Due to the heavy self-weight of the cantilevered concrete structure, it is difficult to erect the construction support frame. The selection of the construction plan and the design of the construction platform corresponding to this part are also particu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G11/48E04G13/04E04G17/00E04G5/00E04G5/14
CPCE04G11/48E04G13/04E04G17/00E04G5/001E04G5/14
Inventor 李国辉苗坤鹏高立刚张晓楠李享
Owner THE FOURTH OF CHINA EIGHTH ENG BUREAU
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