Manufacturing method of spiral steel ladder of reinforced concrete chimney
A technology of reinforced concrete and manufacturing methods, which can be applied to stairs, ladder-like structures, buildings, etc., and can solve the problems of large consumption of materials and difficulty in ensuring welding quality, etc.
Inactive Publication Date: 2021-05-28
LUOYANG RUIZE PETROCHEM ENG
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Problems solved by technology
But at present relevant national atlas, standard all do not have the way of upper reinforced concrete chimney sampling or monitoring platform inclined ladder (or Z word ladder, spiral ladder), there is no dowel in the existing production of reinforced concrete chimney spiral steel ladder, or directly The steel plate is pre-buried on the wall of the cylinder, and the spiral steel ladder needs to be welded at high altitude, which is difficult to ensure the welding quality; or a separate stairwell is set around the concrete chimney, which consumes a lot of materials and requires additional floor space
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[0024] For further elaborating the technical means and effects that the present invention adopts for reaching the intended purpose of the invention, below in conjunction with accompanying drawing and preferred embodiment, to its concrete implementation of the manufacturing method of a kind of reinforced concrete chimney spiral steel ladder that proposes according to the present invention Details are as follows.
[0025] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular ...
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The invention provides a manufacturing method of a spiral steel ladder of a reinforced concrete chimney. The manufacturing method comprises the following steps that 1) when concrete is poured on the cylinder wall of the chimney, a plurality of blind mortises are pre-buried in the cylinder wall; 2) a rest platform and the spiral ladder are welded on the ground; 3) after a sliding formwork on the outer wall of the chimney is removed, the rest platform is fixedly installed on the blind mortises through bolts; and 4) the spiral ladder is connected with the rest platform and a sampling platform, and field installation of the spiral ladder is completed. According to the manufacturing method of the spiral steel ladder of the reinforced concrete chimney, the structure is simple, connection is reliable, construction is rapid, disassembly and assembly are convenient, and the construction period can be effectively shortened.
Description
technical field [0001] The invention belongs to the field of reinforced concrete chimneys, in particular to a method for manufacturing a spiral steel ladder of a reinforced concrete chimney. Background technique [0002] "Technical Specifications for Continuous Monitoring of Flue Gas (SO2, NOX, Particulate Matter) Emissions from Fixed Pollution Sources" (HJ 75-2017) stipulates that the sampling or monitoring platform should be easy for personnel and monitoring instruments to reach, when the sampling platform is set at a height ≥ 2m from the ground When the sampling platform is set at a height ≥ 20m from the ground, there should be an elevator leading to the platform. When the height of the platform from the ground is ≥2m and <20m, an inclined ladder (or Z-shaped ladder, spiral ladder) should be provided. But at present relevant national atlas, standard all do not have the way of upper reinforced concrete chimney sampling or monitoring platform inclined ladder (or Z word ...
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IPC IPC(8): E04F11/02E04F11/032
CPCE04F11/02E04F11/032E04F2011/0212
Inventor 任春来郭子明
Owner LUOYANG RUIZE PETROCHEM ENG