High-altitude suspended formwork and its construction method

A cantilever and formwork technology, which is applied to the accessories of scaffolding, the scaffolding supported by the building structure, the support of the building structure, etc., can solve the problems such as the inability to guarantee the safety, the difficulty of erecting the external support formwork, and the high construction cost. , to avoid welding and dismantling work, save construction resources investment, and achieve the effect of low cost

Active Publication Date: 2017-07-14
HENAN GUOJI CONSTR GRP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0007] Due to the high position, large span, limited site and large wind load of the traditional cantilevered structure formwork support during the construction of the cantilevered concrete structure, it is difficult to directly use the external support formwork to erect, the construction cost is high, and the construction period is long. , The safety cannot be well guaranteed, which becomes a construction problem. In order to solve this construction problem, the present invention provides a high-altitude cantilevered formwork and its construction method

Method used

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  • High-altitude suspended formwork and its construction method
  • High-altitude suspended formwork and its construction method
  • High-altitude suspended formwork and its construction method

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Embodiment 1

[0040]Embodiment 1: As a very important temporary project in the actual project, the formwork support project directly determines the safety of the project. As a special structural form, the cantilever structure has a disturbance proportional to the fourth power of the span. It can be seen that the influence of the span on the components is extremely significant. The technicians calculated and analyzed the mechanical performance of the formwork support system with a high-altitude cantilever span of 3.7m. The force model of the cantilever and the force of the steel pipe frame of the cantilevered platform are calculated, and the deformation monitoring of the frame is recorded. The following high-altitude cantilever formwork construction method is adopted.

[0041] For the construction method of high-altitude cantilevered formwork, please refer to figure 1 , figure 2 and image 3 , pre-embedded angle steel parts are pre-embedded in the beam on the fifth floor, and the bottom ...

Embodiment 2

[0099] Example 2: see Figure 2-Figure 8 , the high-altitude suspended formwork can be composed of multiple layers, and each layer is gradually extended, and its construction method is basically the same as that of embodiment 1. The structural relationship is as follows: a diagonally braced I-steel support 5 is welded below the end of the cantilevered I-steel 1 or near the end, and the diagonally braced I-steel support 5 includes an inclined base 52 and two side splints 51 It is matched and docked with the end of the diagonal brace I-beam 2; the bottom angle steel 3 is welded and fixed at the bottom of the diagonal brace I-beam 2, and the bottom angle steel 3 is matched and fixed with the edge of the n-story beam; according to the structural requirements, it is pre-prepared when pouring concrete on the n+1 floor Buried φ22 steel bar U-row clasps with a spacing of 1500. After the concrete pouring has a certain strength, start to arrange 18# cantilevered I-beam 1 with a spacing ...

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Abstract

The invention discloses a high-altitude cantilever formwork and a construction method thereof. The bottom angle steel is fixed on the side of the n-story beam of the structure as the support point of the diagonally braced I-beam, and the fixed top angle steel is welded in the middle of the cantilever I-beam. The top angle steel Matching and fastening with the corners of the beams on the n+1 floor; Welding the inherently braced I-steel support at the end of the cantilevered I-steel or near the end. During the construction of the n+1-story structure, the floor slab will There are at least two steel pressure rings, and each round steel pressure ring is firmly welded to the cantilevered I-beam, or fixed with a wooden wedge. The high-altitude cantilever structure of the present invention is characterized in that the parts of the cantilever components are high from the ground. The cantilevered structural members have a long cantilever span, and the disturbance caused by the self-weight of the structure is large. The location of the welding point between the diagonally braced I-beam and the horizontal I-beam cantilevered platform should be determined according to the length of the cantilever, and the best force-bearing position is within 1 / 3 of the outer edge of the span of the cantilevered member.

Description

technical field [0001] The invention belongs to the technical field of high-altitude suspension formwork construction, and in particular relates to a high-altitude suspension technology of fastener type steel pipe scaffolding. Background technique [0002] As we all know, the application of formwork support technology is an important link in the construction of building structures, and is closely related to the quality of construction projects. Especially the formwork construction of long-span cantilever structures is a construction problem for all construction units. [0003] The floor-to-ceiling scaffold formwork support system used in the traditional formwork support of the cantilever structure has high cost, long working hours, small cantilever span, and no effective guarantee for construction safety. The traditional floor-to-ceiling scaffold formwork construction process is slow and inefficient. Its own rigidity is low, the labor intensity of workers is high, the safety...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G3/18E04G5/04
Inventor 王叙白高兴文陈瑞昌杨永现倪良才程丽娜赵红王永梅张江波曾庆山高波赵俊领贾志永武盈盈李敬松
Owner HENAN GUOJI CONSTR GRP
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