CN110440429B - Subway arched roof ventilating pipeline assembling construction method - Google Patents
Subway arched roof ventilating pipeline assembling construction method Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
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- F24F13/0245—Manufacturing or assembly of air ducts; Methods therefor
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Abstract
The invention provides a subway arched roof ventilating duct assembly construction method, which belongs to the technical field of ventilating air-conditioning duct assembly type construction and comprises the steps of Building Information Modeling (BIM) and optimization, the step two, construction model decomposition, the step three, site lofting and positioning, the step four, processing data statistics, the step five, duct factory prefabrication, the step six, air duct manufacturing on site, the step seven, conversion base and suspender installation, the step eight, air duct assembling on site, and the step nine, air duct heat preservation and protection manufacturing. The method adopts the BIM building model to simulate the construction environment, optimizes the pipeline arrangement and is convenient for field installation; the related air pipes are all manufactured in a fixed length plate prefabricating field mode, so that cutting and welding operations are avoided, and the material utilization rate is effectively improved; the material air pipe is assembled in a decomposition mode, so that the on-site installation and construction are facilitated, and the problem of site limitation in the construction of limited space of a subway is solved; the conversion base of adoption has improved the unable perpendicular atress's of jib when using current furred ceiling base installation tuber pipe gallows technical problem.
Description
Technical Field
The invention belongs to the technical field of assembly construction of ventilation air-conditioning pipelines, and particularly discloses an assembly construction method of an arched roof ventilation pipeline of a subway.
Background
At present, the installation and construction of subway ventilation air-conditioning pipelines are carried out factory manufacturing or field manufacturing and installation by designing a plane blueprint, the installation and manufacturing method has great dependence on field measurement, and because the plane blueprint cannot reflect construction environment, intersection and special-shaped pieces, the following problems exist:
1, the air duct arrangement and installation in factory is limited on site, the processing precision is not easy to control, the air duct is easy to be detached and changed in factory, and the way of long period is not flexible;
2, the waste of field processing materials is large, the risk of cutting and welding operation is high, and a large amount of processing work is concentrated on the field and does not utilize limited space for construction;
and 3, the dependence on the design drawing is serious and the personnel quality is limited.
Disclosure of Invention
In order to solve the problems, the invention provides an assembly construction method of an arched roof ventilating duct of a subway.
In order to achieve the aim, the invention provides a subway arched roof ventilating duct assembly construction method, which comprises the following steps:
step one, Building Information Model (BIM) modeling and optimization
Carrying out model establishment according to a ventilation air conditioner professional drawing, carrying out collision detection by contrasting with a pipeline comprehensive drawing, carrying out statistics and classification on collision points to form a statistical table of influence factor problems, drawing a frequency curve diagram of the occurrence frequency curve, and carrying out optimization processing on the problems found by collision;
step two, decomposing the construction model
The method comprises the following steps of (1) integrally stripping a ventilation pipeline layer of a ventilation air conditioner specialty, refining the ventilation pipeline layer as an independent model, and dividing the stripped ventilation air conditioner pipeline layer into: the system comprises an air return system, an air exhaust system, a smoke exhaust system and a fresh air system; the zinc-plated sheet material is divided into sections according to the specification of the selected zinc-plated sheet material and the special-shaped piece, and the diffusion barrel and the special-shaped piece in front of and behind the fan are divided separately;
step three, field lofting positioning
According to the established model, a relative measuring instrument is used for performing entrance recheck measurement on the installation site of the air pipe to be installed, a BIM lofting robot is used for lofting and positioning the positions of the air pipe support and the sleeve, and the boom is processed by combining the installation height;
step four, processing data statistics
According to detailed processing data of each air duct section of each system, processing data is counted and screened by using an excel table, production data of the fixed-length plate of the galvanized plate of the air duct is determined, and the fixed-length plate is transported to a site for manufacturing after being prefabricated in a factory and is connected with a flange to form the air duct with the corresponding specification;
step five, prefabricating the pipeline in factory
Sixthly, manufacturing the air pipe on site
Seventhly, mounting the conversion base and the suspender
According to the lofting positioning of the BIM robot, mounting of a conversion base and a suspender is carried out, the conversion base comprises a concave base, a mounting bolt, a connecting seat and a connecting bolt, the concave base comprises two oppositely arranged side plates and a bottom plate for connecting the two side plates, the mounting bolt is arranged on the side plates, the connecting seat comprises two connecting plates which are arranged vertically to each other, one connecting plate is connected with the bottom plate of the concave base through the connecting bolt, and a threaded hole is formed in the other connecting plate; the concave base is positioned at the top of the arched top through a mounting bolt according to the mounting position of the air pipe, the direction of a notch of the concave base needs to be mounted along the air supply direction of the air pipe, the connecting base and the concave base are connected through the connecting bolt, and then the processed suspender is mounted on the connecting base;
eighthly, assembling the air pipe on site
The ventilation air conditioner pipeline layer belongs to the uppermost layer of machine room installation, and after the equipment is in place, the pipeline is assembled in sections according to the system and the sub-parts, and the air pipe assembly principle is as follows:
(1) the air pipe is assembled from top to bottom, and the main part is firstly arranged and then the branch is arranged;
(2) under the condition of the same elevation, assembling from the large pipe diameter side to the other side in sequence;
(3) under different elevations, the pipe diameter is firstly large and then small;
(4) assembling the fans of the same system in a front-back sectional manner;
(5) the lower wind receiving pipe is assembled after the top pipeline is finished;
(6) the assembling length of the sectional air pipes is not more than 12 m;
(7) the demarcation point connected with the outer pipeline is arranged outside the machine room;
determining the safe weight which can be borne by a hand-operated hoist adopted in the existing place through calculation, converting the safe weight into the sectional assembly section number of the air pipe, laying up gaskets of corresponding materials and specifications when the air pipe is connected with flanges according to different purposes and design specification requirements of the air pipe, cleaning the interior of the air pipe after the sectional connection is finished, then testing the air pressure and the air leakage quantity of the air pipe by adopting an air leakage tester, and hoisting after the test is qualified;
ninth step, insulating and protecting the air duct
After the air pipe integral connection test is completed, the heat preservation process can be carried out, the heat preservation nail is pasted on the surface of the air pipe according to the standard requirement, then the heat preservation material is installed on the heat preservation nail, finally, the moisture-proof layer construction is carried out, and after the steps are all completed, the outer protection construction can be carried out according to the design requirement.
Specifically, in the first step, the model pipeline optimization and adjustment principle is as follows:
(1) wind is above, electricity is in the middle, and water is below;
(2) first big and then small, and the small pipe is the big pipe;
(3) the bendable pipeline is not bendable;
(4) a branch line and a trunk line;
(5) the pipeline with few accessories avoids the pipeline with many accessories;
(6) an electric cabinet cannot be arranged below the elbow and the connecting piece;
(7) the height of the air duct bottom needs to be reduced with heat preservation and protection;
(8) the distance between the fireproof smoke exhaust valve and the wall is not more than 200 mm;
(9) the air valve arrangement needs to ensure an operation space.
Specifically, the hoisting in the seventh step comprises the following specific steps:
the fixed point is done with station top preset position, fixes the hand hoist, then hangs the qualified hand hoist for the segmentation tuber pipe of test to mounting height, utilizes but hydraulic lift truck or scaffold to install the gallows cross arm under this section tuber pipe one by one and accomplishes, and two adjacent segmentation tuber pipes accomplish connection work in the high altitude, at last with the whole intercommunication of tuber pipe.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts the BIM building model to simulate the construction environment, optimize the pipeline arrangement and facilitate the field installation;
2. the air pipes related by the invention all adopt a fixed length plate prefabrication field manufacturing mode, thereby avoiding cutting and welding operation and effectively improving the material utilization rate;
3. the material air pipe is assembled in a decomposition mode, so that the on-site installation and construction are facilitated, and the problem of site limitation in the construction of limited space of a subway is solved;
4. the air leakage detection amount of the processed air pipe is controlled to be 0-2.97 m3/ m2H, far higher than 0-4.31 m required by the specification3/ m2．H；
5. The conversion base improves the technical problem that the hanger rod cannot be vertically stressed when the existing suspended ceiling base is used for installing the air pipe hanger;
in a word, the construction method for assembling the subway arched roof ventilating duct improves the construction progress and obtains good economic and social benefits.
Drawings
Fig. 1 is a flowchart of a method for assembling and constructing an arched roof ventilation duct of a subway, which is provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a conversion base in the subway arch roof ventilation duct assembly construction method provided in embodiment 1 of the present invention;
FIG. 3 is a schematic view of the conversion base of FIG. 2 in use;
FIG. 4 is a graph showing the appearance frequency in example 2;
FIG. 5 is a schematic diagram showing a return air system in accordance with example 2;
FIG. 6 is a model diagram of an exhaust system in embodiment 2;
FIG. 7 is a model diagram of a smoke evacuation system according to embodiment 2;
fig. 8 is a model diagram of the fresh air system in embodiment 2.
Reference numbers: 1-a concave base; 2-mounting a bolt; 3-a connecting seat; 4-connecting bolts; 100-dome shaped roof; 200-a boom; 300-air pipe; 400-hanger.
Detailed Description
Example 1
The embodiment provides a construction method for assembling an arched roof ventilation pipeline of a subway, which comprises the following steps.
The method comprises the following steps: BIM modeling and optimization
Carrying out model establishment according to a special drawing of the ventilation air conditioner, carrying out modeling processing on the actual field installation condition by utilizing a BIM technology, totally embodying related pipelines, equipment and walls constructed and installed with the air pipes in the model to achieve visual intersection, and determining the installation position of the air pipes;
the method comprises the following steps of carrying out collision detection on an air pipe and other pipelines, carrying out statistics and classification on collision points to form a statistical table of influence factor problems, drawing a frequency curve diagram of the occurrence frequency of the statistical table, and carrying out optimization treatment according to the following principles:
(1) wind is above, electricity is in the middle, and water is below;
(2) first big and then small, and the small pipe is the big pipe;
(3) the bendable pipeline is not bendable;
(4) a branch line and a trunk line;
(5) the pipeline with few accessories avoids the pipeline with many accessories;
(6) an electric cabinet cannot be arranged below the elbow and the connecting piece;
(7) the height of the air duct bottom needs to be reduced with heat preservation and protection;
(8) the distance between the fireproof smoke exhaust valve and the wall is not more than 200 mm;
(9) the air valve arrangement needs to ensure an operation space.
Step two: construction model decomposition
And (4) integrally stripping the ventilation pipeline layer of the ventilation air conditioner specialty, and refining the ventilation pipeline layer as an independent model. Dividing the stripped ventilating air-conditioning pipeline layer into: the system comprises an air return system, an air exhaust system, a smoke exhaust system and a fresh air system; and the special-shaped piece is divided into sections according to the specification of the selected galvanized sheet (namely the width of the galvanized sheet is 1m, 1.25m and 1.5 m) and the special-shaped piece. If 1.25m plate is adopted, the air pipe and the straight pipeline are divided according to 1.25m, and the diffusion barrel and the special-shaped piece in front of and behind the fan are divided separately.
Step three: on-site lofting positioning
And obtaining detailed data of corresponding air pipe installation position, installation height, distance wall and the like in the BIM, and performing measurement and rechecking on the obtained data on site by using a related measuring instrument. And after rechecking is correct, paying off and positioning the hanger rod on the construction site, and processing the hanger rod by combining the installation height.
Step four: statistics of process data
And according to the detailed processing data of each air duct of each system, counting and screening the data of the air return system sub-air ducts by using excel counting and screening. According to the counted and screened air duct section specifications, determining the preset long plate specification of a factory according to the 1/2+ seaming preset length of the perimeter of the air duct for the determined section air duct, prefabricating in the factory and numbering to send to the site.
Step five: prefabrication of pipeline factory
1 prefabrication of galvanized fixed length plate
According to air duct section deepening data, galvanized sheet specification, air duct seam allowance form and other related data, determining the length of a galvanized fixed-length plate, namely the length of the galvanized fixed-length plate is = 1/2+ seam allowance length of the air duct perimeter, prefabricating in a factory, numbering and sending to the site;
2 conversion base prefabrication
As shown in fig. 2, the conversion base comprises a concave base 1, a mounting bolt 2, a connecting seat 3 and a connecting bolt 4, wherein the concave base 1 comprises two oppositely arranged side plates and a bottom plate for connecting the two side plates; the mounting bolts 2 are arranged on the side plates; the connecting seat 3 comprises two connecting plates which are arranged vertically; one connecting plate is connected with the bottom plate of the concave base 1 through a connecting bolt 4, and the other connecting plate is provided with a threaded hole. The conversion base determines the specifications of a concave base (adopting galvanized steel channels), a connecting bolt and a connecting seat (adopting galvanized angle steel) according to the specification of the air pipe, and then prefabricating the conversion base, wherein the machining requirement of the conversion base is described by taking the air pipe size of 1980 x 800mm as an example;
1) concave base 1: according to the requirements of related design specifications and a drawing set, galvanized channel steel with corresponding specifications can be selected according to the sizes of corresponding air pipes, and holes with corresponding specifications are respectively formed in the bottom and the side surfaces of the channel steel (for example, an air pipe with the size of 1980 x 800mm is selected from No. 10 galvanized channel steel, the side surface of the channel steel is provided with a hole with phi 12, and the bottom of the channel steel is provided with a hole with phi 14);
2) the connecting bolt 4: according to the specification size and weight of the corresponding air duct and the stress calculation, selecting connecting bolts with corresponding specifications (for example, the single base bracket of the air duct with the size of 1980 multiplied by 800mm is stressed by 11KN, so that hot galvanizing bolts with phi 14 multiplied by 50mm and the strength of 8.8 grade are selected and matched with two flat springs and two nuts);
3) connecting seat 3: the concave base, the connecting bolt and the size and the weight of the air duct are combined, and the galvanized angle steel meeting the requirements is selected (for example, the air duct with the size of 1980X 800mm is selected from L75 galvanized angle steel, the side surface of the air duct is provided with a phi 14 hole, and the bottom of the air duct is provided with a phi 12 hole).
Sixthly, manufacturing the air duct on site
Set up interim processing district with various steel sheet in the construction site, need establish tuber pipe book side machine, tuber pipe bite making machine, air pump, electric hammer, bench drill and electric welding equipment in the processing district to be equipped with the block terminal. And transporting the galvanized fixed-length plates, flanges and conversion bases prefabricated in the factory to a processing area. And (5) placing and storing the numbered galvanized fixed-length plates in a classified manner. And synchronously manufacturing the galvanized fixed-length plate with the corresponding specification into a semi-finished product through the steps of chamfering, seaming and square folding. And then anchoring the semi-finished galvanized air pipe and the angle steel flange by using a rivet, completing the steps of flanging and seaming, and performing angle steel internal reinforcement operation on the air pipe with the side length exceeding 1m according to the standard requirement to complete the manufacture of the whole air pipe.
Step seven: conversion base and boom mounting
A safety steel wire rope is arranged at a proper position to ensure the construction safety of field workers. And (4) carrying out installation work of the convertible base and the suspender according to the air pipe installation position after retesting and positioning. As shown in fig. 2 and 3, the concave base 1 is fixed on the arch roof 100 by mounting bolts 2 (expansion bolts) with corresponding specifications, the concave surface is installed along the air supply direction of the air duct, then the connecting base 3 and the concave base 1 are connected by using the connecting bolt 4, and the processed hanger rod 200 is installed on the connecting base 3. The jib 200 can follow the connecting seat 3 rotation, is in vertical state all the time, need not cut on the jib 200, welds etc. so that certain angle is buckled into to jib 200, and jib 200 should not wear and tear after receiving the same effort, has prolonged jib 200's life, has improved tuber pipe 300's installation rate and installation accuracy and tunnel ventilation system's security.
Step eight: on-site assembly of air duct
The ventilation air conditioner pipeline layer belongs to the uppermost layer of machine room installation, and after the equipment is in place, the pipeline is assembled in sections according to the system and the sub-parts, and the air pipe assembly principle is as follows:
(1) the air pipe is assembled from top to bottom, and the main part is firstly arranged and then the branch is arranged;
(2) under the condition of the same elevation, assembling from the large pipe diameter side to the other side in sequence;
(3) under different elevations, the pipe diameter is firstly large and then small;
(4) assembling the fans of the same system in a front-back sectional manner;
(5) the lower wind receiving pipe is assembled after the top pipeline is finished;
(6) the assembling length of the sectional air pipes is not more than 12 m;
(7) the demarcation point connected with the outer pipeline is arranged outside the machine room;
determining the safe weight which can be borne by a hand-operated hoist adopted in the existing place through calculation, converting the safe weight into the sectional assembly section number of the air pipe, laying up gaskets of corresponding materials and specifications when the air pipe is connected with flanges according to different purposes and design specification requirements of the air pipe, cleaning the interior of the air pipe after the sectional connection is finished, then testing the air pressure and the air leakage quantity of the air pipe by adopting an air leakage tester, and hoisting after the test is qualified;
the fixed point is done with station top preset position, fixes the hand hoist, then hangs the qualified hand hoist for the segmentation tuber pipe of test to mounting height, utilizes but hydraulic lift truck or scaffold to install the gallows cross arm under this section tuber pipe one by one and accomplishes, and two adjacent segmentation tuber pipes accomplish connection work in the high altitude, at last with the whole intercommunication of tuber pipe.
Step nine: air pipe heat preservation and protection manufacture
After the air pipe integral connection test is completed, the heat preservation process can be carried out, the heat preservation nails are pasted on the surface of the air pipe according to the standard requirements, then the heat preservation materials are installed on the heat preservation nails, and finally the moisture-proof layer construction is carried out. After the steps are completed, external protection construction can be carried out according to design requirements.
Example 2
For example, the large-end refrigeration air-conditioning machine room at the south station of the apple orchard is installed, and the total air pipes of the air-conditioning machine rooms at the south station of the apple orchard are installed to be 2000m in total2The 'fixed length plate + on-site' assembly of the subway arched top galvanized air pipe has the advantages of simplified process, safety and high efficiency.
The statistics of the influencing factor problems in step one are shown in table 1.
From the above table, a frequency of occurrence graph was prepared as shown in fig. 4.
In the fourth step and the fifth step, the reserved length of the nip is 0.035 m.
The conversion base solves the problems of air pipe hoisting and vertical installation, the loss of the plate is greatly reduced by introducing the galvanized fixed-length plate, the transportation is convenient, the time for workers to adjust the air pipe is reduced, and the benefit comparison is shown in a table 2.
As can be seen from the comparison of the above table, the construction method for assembling the subway arched roof ventilation duct in the embodiment 1 reduces the material loss by 7% compared with the conventional installation method, is simple in transportation and hoisting, has high manufacturing accuracy, and greatly reduces the labor and time for installing the same square number of air ducts.
Single station example calculation: take the installation of large-end refrigeration air-conditioning machine room at south station of apple orchard as an example (the total installation number of galvanized air pipes is 2000 m)2(ii) a The average price of the galvanized sheet is 45 yuan/m 2; the new transport method of the galvanized sheet material is expected to need 2 cars/day, and the original transport method is expected to need 5 cars/day for finished product transport; general worker/day 180 yuan, mechanic/day 230 yuan), calculated as follows:
1) saving the plates: 3600 yuan = (2000 × 0.1-2000 × 0.06) × 45
In the formula: (1.2 mm thick galvanized sheet 45 yuan/sq.m, processed 10500 m2 air hose at the same time).
2) Transportation cost: 4500 membered = 5 × 1500-2 × 1500
In the formula: (2 cars/time is required for plate transportation and 5 cars/time is required for finished product air pipe transportation)
3) Manpower saving: 14160 yuan =12 × (4 × 180+230 × 12-10 × 230)
In the formula: (general worker/day 180 yuan, mechanic/day 230 yuan):
4) the single station saves in total: 22260 element =3600+4500+14160
5) 3 stations save in total: 66780 yuan =22260 × 3
As can be seen from the comparison of the table above, the pipeline assembly type construction method is adopted, the material loss is reduced by 6% compared with the traditional installation method, the transportation is completed at one time, the manufacturing precision is high, and the labor and the time for installing the water pipes in the machine room are greatly reduced.
Single station example calculation: taking the standard machine room of the south station of the apple orchard in the west-extension project of Beijing subway No. 6 line as an example (the total price of related materials is 43 ten thousand yuan; 1 vehicle/time is expected to be needed for prefabricated pipeline transportation, 3 vehicles/time is needed for a pipeline transportation field; 180 yuan per person/day for general workers and 230 yuan per person/day for skilled workers), the calculation is as follows:
1) saving the plates: 25800 yuan =430000 × (0.08-0.02)
In the formula: (43 thousands of pipe workers at a single station, 6 percent of saving).
2) Transportation cost: 3000 yuan =3 × 1500-1 × 1500
In the formula: (the prefabricated pipe is expected to need 1 vehicle/time, the finished pipe is expected to need 3 vehicles/time, the single time is 1500 yuan)
3) Manpower saving: 139800 yuan =70 × 6 (180 + 230) -30 × 6 × 180
In the formula: (general worker/day 180 yuan, mechanic/day 230 yuan):
4) the single station saves in total: 168600 yuan =139800+3000+ 25800.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.
Claims (3)
1. A subway arch roof ventilating duct assembly construction method is characterized by comprising the following steps:
step one, Building Information Model (BIM) modeling and optimization
Carrying out model establishment according to a special drawing of the ventilation air conditioner, carrying out modeling processing on the actual field installation condition by utilizing a BIM technology, embodying all relevant pipelines, equipment and walls constructed and installed with the air pipe in the model to achieve visual intersection, determining the installation position of the air pipe, carrying out collision detection by contrasting a comprehensive drawing of the pipelines, carrying out statistics and classification on collision points, forming a statistical table of influence factor problems, drawing a frequency curve chart of the occurrence frequency of the problems, and carrying out optimization processing on the problems found by collision;
step two, decomposing the construction model
The method comprises the following steps of (1) integrally stripping a ventilation pipeline layer of a ventilation air conditioner specialty, refining the ventilation pipeline layer as an independent model, and dividing the stripped ventilation air conditioner pipeline layer into: the system comprises an air return system, an air exhaust system, a smoke exhaust system and a fresh air system; the zinc-plated sheet material is divided into sections according to the specification of the selected zinc-plated sheet material and the special-shaped piece, and the diffusion barrel and the special-shaped piece in front of and behind the fan are divided separately;
step three, field lofting positioning
According to the established model, obtaining corresponding air pipe installation position, installation height and wall distance data in a BIM model, carrying out entrance recheck measurement on the air pipe installation site to be installed by using a relevant measuring instrument, carrying out lofting positioning on the positions of an air pipe bracket and a sleeve by using a BIM lofting robot, and carrying out suspender processing by combining the installation height;
step four, processing data statistics
According to detailed processing data of each air duct section of each system, utilizing excel to carry out statistical screening on a processing data table, determining production data of the fixed-length plate of the galvanized plate of the air duct, transporting the fixed-length plate to a site for manufacturing after prefabrication of a factory, and connecting the fixed-length plate with a flange to form the air duct with a corresponding specification;
step five, prefabricating the pipeline in factory
1. Prefabrication of galvanized fixed-length plate
Determining the length of the galvanized fixed-length plate according to air pipe section deepening data, galvanized plate specifications and an air pipe seam allowance form, namely the length of the galvanized fixed-length plate is = 1/2+ seam allowance length of the air pipe perimeter, prefabricating in a factory, numbering and sending to the site;
2. conversion base prefabrication
Sixthly, manufacturing the air pipe on site
Arranging a temporary processing area in a construction site by using a color steel plate, wherein an air pipe square folding machine, an air pipe seam making machine, an air pump, an electric hammer, a bench drill and electric welding equipment are required to be arranged in the processing area, a distribution box is arranged, a galvanized fixed length plate, a flange and a conversion base which are prefabricated in a factory are transported to the processing area, the numbered galvanized fixed length plates are placed and stored in a classified mode, the galvanized fixed length plates with corresponding specifications are made into semi-finished products through chamfering, seam making and square folding steps, the semi-finished galvanized air pipes and angle steel flanges are anchored by using rivets, flanging and seam sewing steps are completed, air pipes with the side length exceeding 1m are subjected to angle steel internal reinforcement operation according to the standard requirement, and the whole air pipe section is made;
seventhly, mounting the conversion base and the suspender
According to the lofting positioning of the BIM robot, mounting of a conversion base and a suspender is carried out, the conversion base comprises a concave base, a mounting bolt, a connecting seat and a connecting bolt, the concave base comprises two oppositely arranged side plates and a bottom plate for connecting the two side plates, the mounting bolt is arranged on the side plates, the connecting seat comprises two connecting plates which are arranged vertically to each other, one connecting plate is connected with the bottom plate of the concave base through the connecting bolt, and a threaded hole is formed in the other connecting plate; the concave base is positioned at the top of the arched top through a mounting bolt according to the mounting position of the air pipe, the direction of a notch of the concave base needs to be mounted along the air supply direction of the air pipe, the connecting base and the concave base are connected through the connecting bolt, and then the processed suspender is mounted on the connecting base;
eighthly, assembling the air pipe on site
The ventilation air conditioner pipeline layer belongs to the uppermost layer of machine room installation, and after the equipment is in place, the pipeline is assembled in sections according to the system and the sub-parts, and the air pipe assembly principle is as follows:
(1) the air pipe is assembled from top to bottom, and the main part is firstly arranged and then the branch is arranged;
(2) under the condition of the same elevation, assembling from the large pipe diameter side to the other side in sequence;
(3) under different elevations, the pipe diameter is firstly large and then small;
(4) assembling the fans of the same system in a front-back sectional manner;
(5) the lower wind receiving pipe is assembled after the top pipeline is finished;
(6) the assembling length of the sectional air pipes is not more than 12 m;
(7) the demarcation point connected with the outer pipeline is arranged outside the machine room;
determining the safe weight which can be borne by a hand-operated hoist adopted in the existing place through calculation, converting the safe weight into the sectional assembly section number of the air pipe, laying up gaskets of corresponding materials and specifications when the air pipe is in flange connection according to different purposes and design specification requirements of the air pipe, cleaning the interior of the air pipe after the sectional connection is finished, then testing the air pressure and the air leakage quantity of the air pipe by adopting an air leakage tester, and hoisting after the test is qualified;
ninth step, insulating and protecting the air duct
After the air pipe integral connection test is completed, the heat preservation process is carried out, the heat preservation nail is pasted on the surface of the air pipe according to the standard requirement, then the heat preservation material is installed on the heat preservation nail, finally, the moisture-proof layer construction is carried out, and after the steps are all completed, the outer protection construction is carried out according to the design requirement.
2. The assembly construction method for the ventilating duct with the arched subway roof as claimed in claim 1, wherein in said first step, the model duct optimization and adjustment principle is as follows:
(1) wind is above, electricity is in the middle, and water is below;
(2) first big and then small, and the small pipe is the big pipe;
(3) the bendable pipeline is not bendable;
(4) a branch line and a trunk line;
(5) the pipeline with few accessories avoids the pipeline with many accessories;
(6) an electric cabinet cannot be arranged below the elbow and the connecting piece;
(7) the height of the air duct bottom needs to be reduced with heat preservation and protection;
(8) the distance between the fireproof smoke exhaust valve and the wall is not more than 200 mm;
(9) the air valve arrangement needs to ensure an operation space.
3. The assembly construction method for the subway arched roof ventilation duct according to claim 1, wherein the concrete steps of hoisting in the step eight are as follows:
the fixed point is done with station top preset position, fixes the hand hoist, then hangs the qualified hand hoist for the segmentation tuber pipe of test to mounting height, utilizes but hydraulic lift truck or scaffold to install the gallows cross arm under this section tuber pipe one by one and accomplishes, and two adjacent segmentation tuber pipes accomplish connection work in the high altitude, at last with the whole intercommunication of tuber pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910643503.3A CN110440429B (en) | 2019-07-17 | 2019-07-17 | Subway arched roof ventilating pipeline assembling construction method |
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| CN111520176B (en) * | 2020-05-11 | 2022-02-15 | 中铁十二局集团电气化工程有限公司 | Installation and construction method for unit of centralized air supply and exhaust system |
| CN111779896B (en) * | 2020-06-19 | 2021-08-27 | 中建四局安装工程有限公司 | Prefabricated installation process of wall-through air pipe |
| CN111753348B (en) * | 2020-06-30 | 2023-11-10 | 广东天元建筑设计有限公司 | Method and device for deepening building data model component and readable storage medium |
| CN112163258A (en) * | 2020-09-24 | 2021-01-01 | 中国十七冶集团有限公司 | Design method of venue hanging bracket based on BIM technology |
| CN113108450A (en) * | 2021-04-23 | 2021-07-13 | 广州市水电设备安装有限公司 | Air pipe installation construction method applied to high-rise building |
| CN114759491A (en) * | 2022-04-30 | 2022-07-15 | 山西一建集团有限公司 | Arc-shaped pipeline construction method |
| CN115203805B (en) * | 2022-07-20 | 2023-06-13 | 中国建筑西南设计研究院有限公司 | BIM technology-based air duct model generation method, device and readable medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08161372A (en) * | 1994-12-02 | 1996-06-21 | Sekisui Chem Co Ltd | Data transformation system in component pick-up system |
| CN107542161A (en) * | 2017-08-23 | 2018-01-05 | 中建八局第建设有限公司 | BIDA engineering of integrating technical systems |
| CN107967399A (en) * | 2017-12-19 | 2018-04-27 | 广东建远建筑装配工业有限公司 | A kind of assembled architecture Deepen Design method based on BIM softwares |
| CN207348891U (en) * | 2017-06-30 | 2018-05-11 | 中铁十二局集团有限公司 | Pipe installs conversion cradle to arch against the wind |
| CN109117510A (en) * | 2018-07-16 | 2019-01-01 | 同济大学建筑设计研究院(集团)有限公司 | A kind of method for prefabricating of the groove-type piping system based on BIM |
-
2019
- 2019-07-17 CN CN201910643503.3A patent/CN110440429B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08161372A (en) * | 1994-12-02 | 1996-06-21 | Sekisui Chem Co Ltd | Data transformation system in component pick-up system |
| CN207348891U (en) * | 2017-06-30 | 2018-05-11 | 中铁十二局集团有限公司 | Pipe installs conversion cradle to arch against the wind |
| CN107542161A (en) * | 2017-08-23 | 2018-01-05 | 中建八局第建设有限公司 | BIDA engineering of integrating technical systems |
| CN107967399A (en) * | 2017-12-19 | 2018-04-27 | 广东建远建筑装配工业有限公司 | A kind of assembled architecture Deepen Design method based on BIM softwares |
| CN109117510A (en) * | 2018-07-16 | 2019-01-01 | 同济大学建筑设计研究院(集团)有限公司 | A kind of method for prefabricating of the groove-type piping system based on BIM |
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