Construction method for upper cylinder of cooling tower of steel structure

Abstract

The invention relates to a construction method for an upper cylinder of a cooling tower of a steel structure. The method comprises the steps that 1, a triangular frame which is enclosed by a cross beam and inclined beams is manufactured; 2, upper and lower locking plates are arranged on the intersections of the two ends of the cross beam and the two inclined beams respectively, and through holes are formed in the upper and lower locking plates; 3, the triangular frame which passes inspection is conveyed to a cavity which is defined by cone segments; 4, a tower crane is used for reversely hoisting the to-be-installed triangular frame to the installation position, it is guaranteed that a lower blocking plate of the bottom of the to-be-installed triangular frame is flush with the upper locking plate on the cross beam of an installed triangular frame, back levers penetrate through the through holes of the upper and lower locking plates, and wedges are put into the through holes; 5, the wedges are hammered, and the outer surface of the triangular frame is flush; 6, the perpendicularity of the triangular frame is adjusted by using an increase line; 7, the triangular frame is fixed and welded by using point welding; 8, the fourth to seventh steps are repeated, and other triangular frames at the same layer are installed on the circumference; 9, the fourth to eighth steps are repeated,and the other layers of triangular frames are installed. According to the construction method, the construction efficiency is high, installation and positioning are reliable, and the technical problemis solved that a cylinder with the large diameter is difficultly constructed.

Description

technical field [0001] The invention relates to the field of steel structure cooling tower construction, in particular to a construction method for the upper cylinder of the steel structure cooling tower. Background technique [0002] A power plant newly built two intercooling towers of steel structure type, which include the lower cone section, upper cylinder, reinforcing ring, widening platform, upper tower ladder, outer protective aluminum plate, etc. The steel tower is 169.01m high, the bottom of the lower cone section has a diameter of 129.44m and a height of 55m, and the upper cylinder has a diameter of 82m and a height of 114.01m. The inter-cooling tower is assembled by triangular grid, reinforcing ring, widening and outer protective aluminum plate. The whole tower body is a steel structure. The steel structure of a single tower weighs about 4102.2 tons, and the weight of a single outer protective aluminum plate is about 238. Ton. There are 5 layers in the lower ver...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a construction method for the upper cylinder of the inter-steel cooling tower, which solves the technical problem that the larger diameter cylinder is difficult to install

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