Removal method of outdoor hanging steps

A technology of steps and steel pipes, which is applied in the field of outdoor suspended steps demolition, can solve the problems of high difficulty in safety maintenance, low construction efficiency, and high risk, so as to improve construction efficiency and engineering waste handling efficiency, improve construction safety, and avoid passive damage Effect

Inactive Publication Date: 2021-04-30
ZHEJIANG YIJIAN CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for easier and safer methods of removing areas around buildings without damaging them over an extended period of time while maintaining their structural integrity. It involves fixing upwardly extending supports along with wires attached between these supports and supporting tools used for excavation work. By pulling back the wires after each cut, there may be fewer points where material could fall off causing harm. Additionally, this method ensures safe separation of different stages of the structure, reducing risk of accidental injury caused by falling debris.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the efficient disposal of demolited materials such as footbridts, bridge structures, and other items found near major facilities like sports arenas where they were previously used without being properly supported after their destruction has been completed. Additionally, these constructions may have damaged areas caused by excessive use of tools due to poorly designed supports made from metal bars. To address these issues, proposals include providing temporary scaffolds instead of permanent ones while still supporting the demolised material's weight.

Method used

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  • Removal method of outdoor hanging steps
  • Removal method of outdoor hanging steps
  • Removal method of outdoor hanging steps

Examples

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Effect test

example 1

[0042] Example 1. The width of the large step is 10m, the span is 8m, the beam height is 0.8 / 1.29m, the beam width is 0.3m, and the plate thickness is calculated as 0.15m

[0043] Board: 10m*8m*0.15m*25KN / m 3 =300KN=30t

[0044] Beam: (4m*0.3m*0.8m+4m*1.29m*0.3m)*25KN / m 3 =62.7KN; 0.3m*0.8m*10m*25=60KN 62.7KN*5+60KN=373.5KN=37.35t

[0045] (1) Weight calculation of large steps:

[0046] Total weight: 30+37.35=67.35t

[0047] (2) End (1.5m) weight: 60KN+(255+300)*1.5 / 8=164KN=16.4t

[0048] (3) The back weight of the steel pipe frame is calculated as 60% of the total weight

[0049] 1. Steel pipe characteristics

[0050]

[0051] 2. The load on each pole

[0052] 1) Large step load design value:

[0053]

[0054] The maximum vertical force design value of the pole: N = 32.328 × 0.5 × 0.5 = 8.082kN

[0055] 3. Pole stiffness and stability

[0056] Assuming that 60% of the load in the large step area is borne by the steel pipe scaffolding, according to the "Te

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Abstract

The invention provides a removal method of outdoor hanging steps. The removal method comprises the steps of arranging a protective fence, and removing a step decorative surface of the top surface of a to-be-removed step; cutting off a cable and water, electricity and gas pipelines; reinforcing both ends of the to-be-removed step by adopting a steel pipe scaffold, and jacking the bottom of the to-be-removed step by adopting a jacking and a square timber on the top of the steel pipe scaffold; fixing a plurality of steel wire ropes for hoisting to the to-be-removed step, and connecting one end of each steel wire rope with hoisting equipment; cutting the both ends of the to-be-removed step by adopting cutting equipment, wherein a component on the upper part of the steel pipe scaffold is not broken; hoisting the to-be-removed step through hoisting equipment, and then placing the to-be-removed step on the ground; removing the to-be-removed step on the steel pipe scaffold in a crushing mode through a crusher; removing the steel pipe scaffold, and cleaning engineering garbage; and arranging a spraying machine and a watering cart so as to control flying dust of the construction phenomenon during removal. The removal method has the advantages of no damage to a main building, simplicity in operation, convenience in construction, high working efficiency and high safety.

Description

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Claims

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Application Information

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Owner ZHEJIANG YIJIAN CONSTR GROUP
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