Combination installation safety special construction process for steel truss of coal conveying trestle

Abstract

The invention discloses a combination installation safety special construction process for a steel truss of a coal conveying trestle. The process comprises the following steps: step 1, material inspection, step 2, lofting and scribing, step 3, blanking, step 4, manufacturing and combination, step 5, hoisting: a field machine tool is provided with three 35T autocranes, one 130T autocrane, one 260Tautocrane, one 350T autocrane and one 500T autocrane, depending on the actual situation of the scene, in order to reasonably utilize machinery and shorten the hoisting time, under the condition that aconstruction site allows, the steel truss and steel brackets are combined and then are hoisted in a centralized manner, the structural design is reasonable, a segmented integral hoisting method is adopted, the method is less in aloft work, the welding quality can be guaranteed, the safety risk is small, the construction site is not occupied greatly, the cost is low, and the construction period isshort; compared with a traditional hoisting process, the method has great advantages in the aspects of quality, safety guarantee, control over the construction period and cost control in the construction of the steel truss of the coal conveying trestle.

Description

technical field [0001] The invention relates to the technical field of combined installation of coal trestle steel trusses, in particular to a special safety construction technology for combined installation of coal trestle steel trusses. Background technique [0002] Segmented overall hoisting method, that is to assemble the steel truss of the coal trestle bridge into a whole on the ground, and then hoist it as a whole with a crane, shift it in the air and then fix it in place, and the high-altitude bulk method, that is, first set up the assembled scaffolding at the design position, and then transport it vertically The tool lifts the component parts to the design position in the air, and assembles them on the scaffold. [0003] At present, the steel truss of the coal trestle has a large span, high hoisting height, and large lifting capacity. According to past construction experience, the traditional hoisting process of the steel truss of the coal trestle usually adopts the ...

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Problems solved by technology

[0003] At present, the steel truss of the coal trestle has a large span, high hoisting height, and large lifting capacity. According to past construction experience, the traditional hoisting process of the steel truss of the coal trestle usually adopts the high-altitude bulk method. It is difficult to guarantee, the safety is difficult, the installation and operation of scaffolding occupies a large area, the workload of high-altitude operations is large, the construction period is long, and the cost is high. For this reason, we propose a special construction technology for the safety of steel truss combined installation of coal transportation trestle

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