Space truss platform for round building construction and construction method using same

Abstract

The invention relates to a space truss platform for round building construction. A plurality of steel frame units are spliced along the circumferential direction into a stable conical platform space structure by connectors, wherein the steel frame units are arranged along the radial direction of the stable conical platform. Each steel frame unit comprises an upper cord pull rod on the side of the stable conical platform, a lower cord pull rod at the bottom of the stable conical platform, a first profile steel web member and a second profile steel web member which are in the inner cavity of the stable conical platform, and first, second and third reinforcing steel bar prestressed pull rods to which prestress can be applied. Each connector comprises an upper pressure ring, a lower pressure ring, an enclosure, an upper circumferential-direction connecting rod and a lower circumferential-direction connecting rod. Pressed rods are rigid rods (profile steel), pull rods are flexible rods (round bar steel) and prestress can be applied to the pull rods. The invention also relates to a method for constructing a round building by using the space truss platform, wherein the platform has two functions; in slide form on a cylinder wall, the platform functions as a slip form platform; in top cover construction, the platform functions as a form supporting platform. The space truss platform is assembled in field, is simple in structure, high in bearing capacity and convenient to assemble and disassemble and can be reused.

Description

technical field [0001] The invention belongs to the technical field of building engineering construction, and relates to a space truss platform used for circular structure construction and a construction method using the same. Background technique [0002] Due to the inherent advantages of circular structures (with conical frustum top and cylindrical body), a large number of grain storage bins, coal storage bins, etc. mostly use concrete circular structures. With the development of the economy, the diameter and height of concrete circular structures are increasing, which makes the construction technology more difficult; how to construct large-span circular structures has become one of the problems that need to be solved urgently, and the roof concrete pouring construction The support problem of the tube wall concrete pouring construction and the internal support problem are even more difficult. [0003] One, prior art scheme. [0004] In the prior art, there are mainly th...

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Problems solved by technology

[0016] 2. Scaffolding "full red" scheme - the disadvantages are: need to deal with the foundation; need a large amount of steel pipe turnover materials; difficult to erect, long construction period, high-altitude operation, poor safety, poor economic benefits

[0020] The shortcomings of the first and second schemes are that they are only suitable for the roof of the cylinder warehouse with a small diameter, the plane truss has poor integrity, large structural deformation, low bearing capacity, difficult platform installation and removal, long construction period and high cost

[0021] The disadvantage of the third scheme is that a high column (same height as the silo) needs to be erected, and multiple supports must be set up to ensure the stability of the high column. The risk of working at heights is high. Plane trusses are used to form a formwork platform to carry loads. low force

Difficult to install and remove, long construction period and high cost

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