High-rise cantilever structure formwork erecting system and construction method

Abstract

The invention relates to a high-rise cantilever structure formwork erecting system and a construction method. The high-rise cantilever structure formwork erecting system is characterized in that an inclined strut pre-buried steel plate is pre-buried in a lower-layer shear wall, an inclined strut is installed on the inclined strut pre-buried steel plate, a cantilever I-shaped steel is installed ina reserved hole in the shear wall on the layer, and a cantilever area formwork support is arranged on the cantilever I-shaped steel in a supported mode. The invention further provides a construction method during horizontal pipeline wall penetrating. The construction method comprises the construction steps that (1) the inclined strut pre-buried steel plate is manufactured; (2) pre-buried parts arepre-buried; (3) the reserved hole is reserved; (4) a groove-shaped prefabricated base plate is mounted; (5) a pre-welding connection positioning rod is installed; (6) the cantilever I-shaped steel ismounted; (7) an I-shaped steel inclined support is mounted; (8) supports in a cantilever area and a non-cantilever area are erected; (9) installing and pre-pressing are carried out on formworks; (10)a cantilever structure is mounted to integrally form a reinforcement cage; (11) I-shaped steel wire ropes are pulled; and (12) the reserved hole is plugged. According to the high-rise cantilever structure formwork erecting system and the construction method, construction is convenient, the construction quality and the construction safety of a cantilever slab can be improved, and good economic andtechnical benefits are achieved.

Description

technical field [0001] The invention relates to a formwork support system of a cantilevered structure, in particular to a formwork support system and a construction method of a high-rise cantilevered structure. Background technique [0002] There are super-long overhangs on the upper part of high-rise buildings, which makes the formwork support unable to be erected by traditional construction techniques. The external scaffolding of high-rise buildings cannot use floor-standing scaffolding. The external scaffolding can only use cantilevered scaffolding according to the geometric shape of the building. High-rise buildings It is a big problem that there is no stress point on the cantilevered structural formwork support pole at a higher position. [0003] According to past construction experience, it is necessary to pre-embed anchor rings, pull rings and diagonal bracing pre-embedded slabs in advance according to the position of the building's cantilever structure, and pre-embed...

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Problems solved by technology

[0002] There are super-long overhangs on the upper part of high-rise buildings, which makes the formwork support unable to be erected by traditional construction techniques. The external scaffolding of high-rise buildings cannot use floor-standing scaffolding. The external scaffolding can only use cantilevered scaffolding according to the geometric shape of the building. High-rise buildings It is a big problem that there is no stress point on the cantilever structure formwork support pole at a higher position

[0003] According to past construction experience, it is necessary to pre-embed anchor rings, pull rings and diagonal bracing pre-embedded slabs in advance according to the position of the building's cantilever structure, and pre-embed the diagonal bracing pre-embedded slabs when constructing the lower floor structure of the cantilever structure The height of the pre-embedded slab is strictly controlled during the installation of the traditional construction pre-embedded slab. The height of the pre-embedded slab must be 1 to 2 cm higher than the structural slab to prevent the concrete from covering the pre-embedded slab when the structural concrete is poured. The specific operation of this construction method is more difficult

[0004] During the installation process of the cantilevered I-beam in the traditional construction method, the position of the structural plate should be protected by laminates. If the oblique support is too long, the oblique support will be variable and the bending resistance will be reduced. Channel steel can be used to place all the oblique supports in the middle of the support. Integral connection, its function is similar to the crossbar in the scaffolding, if the floor height is high, resulting in too long oblique support length, the channel steel spacing can be adjusted appropriately, this construction method still has some shortcomings

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