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Construction Method for Assembling Ventilation Ducts in Metro Vaulted Roofs

A technology for ventilation pipes and construction methods, which is applied in the field of assembly-type construction of ventilation and air-conditioning pipes, and can solve the problems of high-quality personnel, construction without using limited space, and high risks in cutting and welding operations.

Active Publication Date: 2021-07-06
CHINA RAILWAY 12TH BUREAU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The arrangement and installation of air ducts produced in the factory are subject to the site, and the processing accuracy is not easy to control, which is easy to cause demolition and modification after returning to the factory, and the long cycle method is not flexible;
[0004] 2 On-site processing materials are wasteful, cutting and welding operations are risky, and a large amount of processing work is concentrated on-site without using limited space for construction;
[0005] 3 Serious dependence on design drawings, subject to more personnel quality

Method used

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  • Construction Method for Assembling Ventilation Ducts in Metro Vaulted Roofs
  • Construction Method for Assembling Ventilation Ducts in Metro Vaulted Roofs
  • Construction Method for Assembling Ventilation Ducts in Metro Vaulted Roofs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment provides a construction method for assembling ventilation ducts on a subway vaulted roof, which includes the following steps.

[0062] Step 1: BIM modeling and optimization

[0063] Establish the model according to the professional drawings of ventilation and air conditioning, use BIM technology to model the actual installation situation on site, and fully reflect the pipelines, equipment and walls related to the construction and installation of the air duct in the model, so as to achieve visual disclosure and determine the air duct installation location;

[0064] Carry out collision detection between the air duct and other pipelines, count and classify the collision points, form a statistical table of influencing factors, and draw their frequency curves, and optimize them according to the following principles:

[0065] (1) The wind is above, the electricity is in the middle, and the water is below;

[0066] (2) Big first and then small, the small tube...

Embodiment 2

[0106] Take the installation of the large-end refrigerated air-conditioning machine room at Pingguoyuan South Road Station as an example. The total air duct installation of the air-conditioning machine room at Pingguoyuan South Road Station is 2000m 2 , The "fixed-length board + on-site" assembly of the galvanized air duct on the arched roof of the subway, the process is simplified, safe and efficient.

[0107] See Table 1 for the statistics of the influencing factors in Step 1.

[0108]

[0109] According to the above table, make a graph of the frequency of occurrence, such as Figure 4 shown.

[0110] In steps 4 and 5, the reserved length of the bite is 0.035m.

[0111] The use of the conversion base solves the problem of air duct hoisting and vertical installation. The introduction of galvanized fixed-length plates greatly reduces the loss of the plates, facilitates transportation, and reduces the time for workers to adjust the air ducts. See Table 2 for the benefit co...

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Abstract

The invention provides a method for assembling and constructing a ventilation duct on a subway arched roof, which belongs to the technical field of assembled construction of ventilation and air-conditioning ducts. Step 4: Statistics of processing data; Step 5: Prefabrication of pipes in the factory; Step 6: On-site production of air ducts; Step 7: Installation of conversion bases and booms; The above method adopts BIM building model, simulates the construction environment, optimizes the pipeline arrangement, and facilitates on-site installation; the air ducts involved are all prefabricated on-site with fixed-length boards, which avoids cutting and welding operations and effectively improves material utilization; material air ducts are decomposed The assembly method is convenient for on-site installation and construction, and solves the problem of site restrictions in the limited space construction of the subway; the conversion base used improves the technical problem that the hanger cannot be vertically stressed when using the existing ceiling base to install the air duct hanger.

Description

technical field [0001] The invention belongs to the technical field of assembly-type construction of ventilation and air-conditioning pipes, and specifically discloses a construction method for assembling ventilation pipes on a subway vaulted roof. Background technique [0002] At present, the installation and construction of subway ventilation and air-conditioning pipelines is carried out by factory production or on-site production and installation through the design of plan blueprints. The above-mentioned installation and production methods rely heavily on on-site measurement, because the plan drawings cannot reflect the construction environment, intersections and special-shaped parts, and there are the following problems: [0003] 1. The arrangement and installation of air ducts produced in the factory are subject to the site, and the processing accuracy is not easy to control, which is easy to cause demolition and modification after returning to the factory, and the long ...

Claims

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Application Information

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IPC IPC(8): F24F13/02G06F30/13
CPCF24F13/0245
Inventor 杨琛韩悌斌辛东红梁卫兵张杰陈金萍郭鸿缪嘉杰
Owner CHINA RAILWAY 12TH BUREAU GRP
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