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Construction method of large cantilever beam at super high place

A construction method and technology of cantilever beams, applied in the direction of girders, joists, truss beams, etc., can solve the problems of difficult construction safety, large consumption of support system, high project cost, etc., to reduce construction costs, shorten construction period, Simple operation effect

Active Publication Date: 2016-06-01
MCC5 GROUP SHANGHAI CORPORATION LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional cantilever beam scaffold support uses floor-standing scaffolding as the support system. Due to the high elevation of the cantilever beam, it often leads to huge consumables for the support system, so the project cost is large, the construction period is long, and safe construction is difficult.
[0003] Therefore there is above-mentioned inconvenience and problem in known large-scale cantilever beam superelevation place construction method

Method used

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  • Construction method of large cantilever beam at super high place
  • Construction method of large cantilever beam at super high place
  • Construction method of large cantilever beam at super high place

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Embodiment 1

[0034] see now Figure 1 to Figure 4 , figure 1 It is a schematic diagram of the cantilevered structure platform of the embodiment of the present invention, figure 2 It is a schematic diagram of the plane layout of the H-shaped steel of the embodiment of the present invention, image 3 It is a schematic diagram of the layout of the +27.7m platform column and beam pre-iron embedded parts of the embodiment of the present invention and Figure 4 It is a schematic diagram of strengthening ?~?H-shaped steel and embedded iron parts with steel bars according to the embodiment of the present invention.

[0035] The super-high construction method of large cantilever beams of the present invention is characterized in that it comprises the following steps:

[0036] a. Pouring concrete on the +23m platform and hoisting H-shaped steel, including the following steps: pouring +23m platform, hoisting with 80T truck crane, setting 10 H-shaped steels 1 arranged in parallel on the +23m platf...

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Abstract

The invention discloses a method for constructing a large-sized cantilever beam at an ultrahigh position. The method is characterized by comprising the following steps of: a, pouring a +23m platform, and hoisting H-type steel; b, pouring a +27.7m concrete frame beam; c, welding a diagonal tensile reinforcing steel bar from the end of a +23m platform H-type steel cantilever part to a +27.7m pouring concrete frame beam pre-cast iron piece; and d, erecting a scaffold on the H-type steel to construct an upper cantilever beam. The method for constructing the large-sized cantilever beam at the ultrahigh position has the advantages of shortening construction periods and substantially reducing project construction cost, along with a reasonable construction step design, simplicity in operation and high project quality.

Description

technical field [0001] The invention relates to a construction method belonging to a civil structure, in particular to a construction method of a large cantilever beam at a super high place. Background technique [0002] In industrial buildings, due to the needs of the production process, there are a large number of high-altitude cantilevered reinforced concrete girders. For example, in the Baosteel Zhanjiang pellet project, the AB span of the main ore grinding plant has a column spacing of 6.0m, a total length of 120m, a span of 36m, and a total height of 40m. platform), 10.5m (BC cross-platform), 17.3m (BC cross-frame), 23m (BC cross-platform), 31.5m (BC cross-platform), 39.7m (roof). The cast-in-place reinforced concrete independent foundation is used under the column of the main factory building. The +31.5m platform of this project cantilever a platform outside the (21) axis. The maximum beam section of the platform is 500*1600, the load is relatively large, and the can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/00E04C3/06E04C5/03E04G13/04
Inventor 高文建粱正德苏元洪胡容高峰
Owner MCC5 GROUP SHANGHAI CORPORATION LIMITED