Dismantling method for top conical structure of prilling tower

Abstract

The invention discloses a method for dismantling a top conical structure of a prilling tower, which is characterized in that a radial safety rope, a vertical safety rope, an annular safety rope, a climbing rope and a safety belt are arranged in the prilling tower, and an operator dismantles a central ring beam, an inner beam, an edge ring beam and an outer beam layer by layer from inside to outside; the method has the advantages that a scientific and reliable layer-by-layer dismantling sequence from inside to outside is formulated according to the characteristics of the conical structure, the dismantling process is simple, the operation efficiency is high, and the construction period is effectively shortened; the equipment cost and the labor cost in the dismantling process are low; through the arrangement of the radial safety rope, the vertical safety rope, the annular safety rope, the climbing rope and the safety belt, multiple protections are provided for operators, the standing and operation safety of the operators is guaranteed, meanwhile, due to the fact that operation is carried out in the granulation tower, slag is discarded into the granulation tower after all structures are dismantled, and the cost is reduced. And the adverse effects of vibration, splashing, dust and the like on the surrounding environment are basically eliminated, and the environment-friendly effect is good.

Description

technical field [0001] The invention relates to a method for dismantling a building structure, in particular to a method for dismantling a conical structure at the top of a prilling tower. Background technique [0002] The prilling towers of large-scale chemical fertilizer plants generally have a height of more than 60m and a diameter of about 20m. The center ring beam, the edge ring beam and the oblique fixed connection between the center ring beam, the edge ring beam and the inner wall of the prilling tower and distributed uniformly along the circumference of the granulation tower ;Under the country's strict environmental protection requirements and the industry's technological upgrading and transformation environment, some high-rise prilling towers in some enterprises are facing scrapping and demolition. If the safety distance from the surrounding environment of the demolition area allows, the overall blasting demolition process can be used, but the approval procedures fo...

AI Technical Summary

Problems solved by technology

[0002] The prilling towers of large-scale chemical fertilizer plants generally have a height of more than 60m and a diameter of about 20m. The center ring beam, the edge ring beam and the oblique fixed connection between the center ring beam, the edge ring beam and the inner wall of the prilling tower and distributed uniformly along the circumference of the granulation tower ;Under the country's strict environmental protection requirements and the industry's technological upgrading and transformation environment, some high-rise prilling towers in some enterprises are facing scrapping and demolition. If the safety distance from the surrounding environment of the demolition area allows, the overall blasting demolition process can be used, but the approval procedures for this process are cumbersome and costly. High, long pre-preparation time, and there are certain safety risks, such as blasting direction errors, explosive splashes, uncontrollable vibrations, etc., which will adversely affect the safety of the surrounding environment

[0003] The cone-shaped structure at the top is a suspended structure above 60m above the ground. If the scaffolding process is used to dismantle it, it is difficult to set up floor-to-ceiling scaffolding inside the building and to dismantle it later.

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