CN114016703A - Rail top air duct construction method - Google Patents
Rail top air duct construction method Download PDFInfo
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- CN114016703A CN114016703A CN202111506517.4A CN202111506517A CN114016703A CN 114016703 A CN114016703 A CN 114016703A CN 202111506517 A CN202111506517 A CN 202111506517A CN 114016703 A CN114016703 A CN 114016703A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/04—Air-ducts or air channels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/122—Machines for joining reinforcing bars
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0245—Manufacturing or assembly of air ducts; Methods therefor
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0254—Ducting arrangements characterised by their mounting means, e.g. supports
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- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a construction method of a rail top air duct, which comprises the following steps: s1: paying off the upper part of a middle plate of the side wall, and forming a through hole in the middle plate at the position of a vertical steel bar of the same side wall; s2: after the through holes are opened, sequentially penetrating a plurality of L-shaped steel bars into the through holes and welding; s3: grouting and plugging the through hole after the L-shaped steel bar is welded, and welding the vertical steel bar and the L-shaped steel bar; s4: after the vertical steel bars and the L-shaped steel bars are welded, an aluminum plate and a composite wood template are installed below the side wall, the aluminum plate and the composite wood template clamp the vertical steel bars, and the aluminum plate is located on the inner side of the side wall; s5: finally, concrete is poured; this scheme of adoption, through improving original construction technology, adopt down hang modes such as reinforcing bar, thick honeycomb aluminum plate and accelerated the construction progress, solved the difficulty of airtight space secondary construction, satisfied the structural stability in wind channel, guaranteed the safe in utilization in wind channel.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a rail top air duct construction method.
Background
The APM station rail top air duct of the station building is characterized in that vehicle types and factories are not determined when a main body structure is constructed, an internal structure part cannot be determined, the APM main body structure cannot be constructed simultaneously, all steel bars cannot be reserved and embedded, an internal structure construction drawing is received after the main body structure is constructed, secondary construction needs to be carried out, the APM rail top air duct is designed at the lower edge of an APM top plate and consists of plates and side wall walls, the APM rail top air duct is anchored by adopting a top plate opening after the main body structure is completed (all steel bars are implanted in the original design, certain potential safety hazards exist in consideration of the steel bars, an opening is adopted at a position with a middle plate and a waterproof requirement, steel bars and steel bars are implanted in a mode to be connected with the APM structure top plate and the side wall, the net height of the top plate is 1 m-1.8 m, the large part area is 1.4 m-6.4 m in width, the plate thickness is 200mm, the side wall is 200mm in width, a closed space is formed, and the special part used by adopting materials which are easy to rust and easy to loosen, the construction difficulty is very high.
Disclosure of Invention
The invention aims to solve the technical problems that a rail top air duct needs to be subjected to secondary construction and the construction difficulty is extremely high, and aims to provide a rail top air duct construction method which solves the problems that the rail top air duct needs to be subjected to secondary construction and the construction difficulty is extremely high.
The invention is realized by the following technical scheme:
a rail top air duct construction method comprises the following steps:
s1: paying off the upper part of a middle plate of the side wall, and forming a through hole in the middle plate at the position of a vertical steel bar of the same side wall;
s2: after the through holes are opened, sequentially penetrating L-shaped steel bars into the through holes and welding;
s3: grouting and plugging the through hole after the L-shaped steel bar is welded, and welding the vertical steel bar and the L-shaped steel bar;
s4: after the vertical steel bars and the L-shaped steel bars are welded, an aluminum plate and a composite wood template are installed below the side wall, the aluminum plate and the composite wood template clamp the vertical steel bars, and the aluminum plate is located on the inner side of the side wall;
s5: and finally, pouring concrete.
Compared with the prior art, the rail top air channel needs to be constructed for the second time, and the construction difficulty is very high. The scheme provides another construction method for the rail top air channel, the construction progress is accelerated by improving the original construction process and adopting the modes of hanging steel bars, honeycomb aluminum plates and the like, the difficulty of secondary construction in a closed space is solved, the structural stability of the air channel is met, and the use safety of the air channel is ensured; in the scheme, the middle plate and the top plate on the side wall are equal in height, and the difference is that the top plate extends to the parking apron, the upper end of the top plate is made of concrete, namely the top layer of the structure, high waterproof requirements are met, and through holes cannot be formed for improving safety; the middle plate can extend into the terminal building, and the ground can be used as a moisture-proof layer, a waterproof layer and the like, so that a through hole can be formed in the middle plate, the middle plate can be perforated, and the distance between the holes is the same as that between the vertical steel bars of the side wall; then sequentially penetrating a plurality of L-shaped steel bars and welding, wherein the number of the L-shaped steel bars is the same as that of the vertical steel bars of the wall body, the welding mode adopts single-side lap welding, grouting and plugging are performed at through holes after welding is completed, the vertical steel bars of the wall body and the L-shaped steel bars are welded by using the single-side lap welding, and the reinforcing mode of the rail top air channel can be changed by the mode, so that the construction difficulty is reduced; after the vertical steel bars and the L-shaped steel bars are welded, an aluminum plate and a composite wood template are installed below the side wall, the vertical steel bars are clamped by the aluminum plate and the composite wood template, and the aluminum plate is located on the inner side of the side wall; because the rail top air duct is internally and externally provided with two layers, the inner layer space is smaller, and constructors are not easy to enter, if a composite wood template is also used on the inner layer in a conventional mode, the composite wood template is not easy to construct during the installation, reinforcement and removal processes, and the temperature change inside the rail top air duct is large and is very easily influenced by the temperature and humidity change, so that the honeycomb aluminum plate which is difficult to rust and high in strength is selected and used in the scheme, and the aluminum plate does not need to be removed after the construction is finished, thereby reducing the construction difficulty and being also capable of adapting to the temperature difference change in the rail air duct; finally, pouring concrete for molding.
Further preferably, the step S1 further includes the following sub-steps: if the through hole is formed, an electric pick is used for construction in advance, the protective layer on the upper part of the middle plate is kicked out, and the lower part of the middle plate is grooved until gluten in two directions is leaked out; destroy APM structure medium plate reinforcing bar when preventing the trompil, in this scheme, need adopt the electric pick with the manual work to correspond the lower part with the medium plate and have the lateral wall position to play the recess from top to bottom respectively, the thickness of protection layer is played to the upper portion recess to spill the bidirectional gluten and suitably, the lower part is for guaranteeing that new and old concrete is effectively connected, plays to beat 30mm deeply.
Further optimizing, the L-shaped reinforcing steel bars comprise L-shaped short reinforcing steel bars and L-shaped long reinforcing steel bars, the length of the L-shaped short reinforcing steel bars penetrating into the middle plate is not less than the sum of the thickness of the middle plate and LaE, and the length of the L-shaped long reinforcing steel bars penetrating into the middle plate is less than the sum of the thickness of the middle plate and two times LaE; the method is used for improving the effective connection of the steel bars and meeting the requirement of the dislocation of adjacent steel bars in the specification, wherein LaE represents the seismic anchoring length of the tension steel bars.
Further optimizing, the L-shaped short steel bars and the L-shaped long steel bars are sequentially and alternately penetrated and overlapped in a staggered manner, and the vertical staggered distance is not less than LaE; for improved reinforcement of the reinforcement.
Further preferably, the step S1 further includes the following sub-steps: when paying off the upper part of the middle plate of the side wall, paying off the lower part of the top plate and the side wall of the side wall, slotting the lower part of the top plate of the side wall and the side structural steel bars corresponding to the side wall, and planting the steel bars; because the through hole can not be punched in the top plate and is used for reinforcing the steel bar at the top plate, in the scheme, the lower part of the top plate and the corresponding position of the side wall are firstly paid off, in order to prevent the steel bar from damaging the top plate and the side wall steel bar of the APM structure when the steel bar is planted and a hole is opened, an electric pneumatic pick is needed to be manually adopted to groove the lower part of the top plate and the side wall, and meanwhile, in order to ensure the effective connection of new concrete and old concrete, the kicking depth is not less than 30mm, and the steel bar in two directions is needed to be leaked; and the middle plate is provided with holes at the vertical steel bar parts of the same side wall, and the distance between the holes and the vertical steel bar of the same side wall is equal to that between the holes.
Further optimizing, the implanted steel bars comprise short steel bars and long steel bars, the leakage length of the short steel bars is not lower than LaE, the leakage length of the long steel bars is less than two times LaE, the long steel bars and the short steel bars are implanted alternately and are overlapped in a staggered mode, and the vertical staggered distance is not less than LaE; for improved reinforcement of the reinforcement.
Further optimizing, carrying out single-side lap welding on the side structural steel bars and the embedded steel bars, wherein the welding length is LaE, staggered joints need to be noticed during welding, and the distance between the upper staggered joint and the lower staggered joint is not less than LaE; for improved reinforcement of the reinforcement.
Further optimization, the aluminum plate is a honeycomb aluminum plate; is used for improving the strength of the aluminum plate.
Further optimization, a plurality of split-draw rods are arranged between the aluminum plate and the composite wood template; the composite wood formwork is used for reinforcing the aluminum plate, wherein the opposite tension rod is made of aluminum alloy, the opposite tension rod and the aluminum plate are of permanent structures, the composite wood formwork is not detached after the structure is completed, and the composite wood formwork is detached after the structure is completed.
Further optimizing, the screw thread end of the opposite drawing screw rod penetrates through the aluminum plate and is welded with the backing plate; the screw rod is used for preventing the screw rod from damaging the honeycomb aluminum plate in the stress process, and meanwhile, the junction of the two honeycomb aluminum plates is processed into an L-shaped interface for preventing the deformation and the slurry leakage of the joint.
Compared with the prior art, the invention has the following advantages and beneficial effects:
in this scheme, because of the track top wind channel is the secondary construction, through improving original construction technology, adopt down hang modes such as reinforcing bar, thick honeycomb aluminum plate and accelerated the construction progress, solved the difficulty of airtight space secondary construction, satisfied the structural stability in wind channel, guaranteed the safe in utilization in wind channel.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort. In the drawings:
FIG. 1 is a diagram of the middle plate and the side wall reinforcing bars of the rail top air duct provided by the present invention;
FIG. 2 is a middle plate reinforcement diagram of a rail top duct provided by the present invention;
FIG. 3 is a top and side wall reinforcing bar view of a rail-top duct provided in accordance with the present invention;
FIG. 4 is a schematic view of a middle plate reinforcement of the rail-top duct according to the present invention;
FIG. 5 is a L-shaped reinforcement lap joint diagram of the rail head duct provided by the present invention;
fig. 6 is a schematic view of a partial structure of the rail-top duct provided by the present invention.
Reference numbers and corresponding part names in the drawings:
1-middle plate, 2-vertical steel bar, 3-aluminum plate, 4-composite wood formwork, 5-top plate, 6-L type steel bar, 61-L type short steel bar, 62-L type long steel bar, 7-pair tension bar, 8-backing plate and 9-protective layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The embodiment 1 provides a rail top air duct construction method, as shown in fig. 1 to fig. 1, including the following steps:
s1: paying off the upper part of a middle plate 1 of the side wall, and forming a through hole in the middle plate 1 at the position of a vertical steel bar 2 of the same side wall;
s2: after the through holes are opened, sequentially penetrating a plurality of L-shaped steel bars 6 into the through holes and welding;
s3: after the L-shaped steel bar 6 is welded, grouting and plugging the through hole, and welding the vertical steel bar 2 and the L-shaped steel bar 6;
s4: after the vertical steel bars 2 and the L-shaped steel bars 6 are welded, an aluminum plate 3 and a composite wood formwork 4 are installed below the side wall, the vertical steel bars 2 are clamped inside the aluminum plate 3 and the composite wood formwork 4, and the aluminum plate 3 is located on the inner side of the side wall;
s5: and finally, pouring concrete.
Compared with the prior art, the rail top air channel needs to be constructed for the second time, and the construction difficulty is very high. The scheme provides another construction method for the rail top air channel, the construction progress is accelerated by improving the original construction process and adopting the modes of hanging reinforcing steel bars, honeycomb aluminum plates 3 and the like, the difficulty of secondary construction of a closed space is solved, the structural stability of the air channel is met, and the use safety of the air channel is ensured; in the scheme, the middle plate 1 and the top plate 5 on the side wall are equal in height, and the difference is that the top plate 5 extends to the parking apron, the upper end of the top plate is made of concrete, namely a structural top layer, so that the waterproof requirement is high, and through holes cannot be drilled for improving safety; the middle plate 1 extends into the terminal building, and the ground can be used as a moisture-proof layer, a waterproof layer and the like, so that a through hole can be formed in the middle plate 1 to penetrate the middle plate, and the distance between the holes is the same as that between the vertical steel bars 2 of the side wall; then sequentially penetrating a plurality of L-shaped steel bars 6 and welding, wherein the number of the L-shaped steel bars 6 is the same as that of the wall body vertical steel bars 2, the welding mode adopts single-side lap welding, grouting and plugging are performed at through holes after welding is completed, the wall body vertical steel bars 2 and the L-shaped steel bars 6 are welded by using the single-side lap welding, and the steel bar reinforcing mode of the rail top air channel can be changed by the mode, so that the construction difficulty is reduced; after the vertical steel bars 2 and the L-shaped steel bars 6 are welded, an aluminum plate 3 and a composite wood formwork 4 are installed below the side wall, the vertical steel bars 2 are clamped inside by the aluminum plate 3 and the composite wood formwork 4, and the aluminum plate 3 is located on the inner side of the side wall; because the rail top air duct is internally and externally provided with two layers, the inner layer space is small, constructors are not easy to enter, if a conventional mode is adopted to use the composite wood formwork 4 on the inner layer, the composite wood formwork is not easy to construct in the installation, reinforcement and removal processes, and the temperature change inside the rail top air duct is large and is easily influenced by the temperature and humidity change, so that the scheme selects the honeycomb aluminum plate which is difficult to rust and high in strength, the aluminum plate does not need to be removed after the construction is finished, the construction difficulty is reduced, and the temperature difference change in the rail top air duct can be adapted, as shown in fig. 6, wherein fig. 6 is a schematic structural diagram of the rail top air duct in the construction process, the schematic diagram is a simple diagram, and vertical reinforcing steel bars 2 between the aluminum plate 3 and the composite wood formwork 4 and horizontal reinforcing steel bars on the horizontally-arranged composite wood formwork 4 are not shown; finally, pouring concrete for molding.
In this embodiment, the step S1 further includes the following sub-steps: if a through hole is formed, an electric pick is required to be used for construction in advance, the protective layer on the upper part of the middle plate 1 is kicked out, and the lower part of the middle plate 1 is grooved until gluten in two directions is leaked out; destroy APM structure medium plate 1 reinforcing bar during for preventing the trompil, in this scheme, need to adopt the electric pick with medium plate 1 corresponding lower part have the lateral wall position to play the recess from top to bottom respectively, the protective layer thickness is played to upper portion recess to it is suitable to spill the bi-directional gluten, and the lower part is for guaranteeing that new and old concrete effectively connects, plays to beat 30mm deeply.
In this embodiment, the L-shaped reinforcing bars 6 include L-shaped short reinforcing bars 61 and L-shaped long reinforcing bars 62, the length of the L-shaped short reinforcing bars 61 penetrating into the middle plate 1 is not less than the thickness of the middle plate 1 plus LaE, and the length of the L-shaped long reinforcing bars 62 penetrating into the middle plate 1 is less than the thickness of the middle plate 1 plus two times LaE; the method is used for improving the effective connection of the steel bars and meeting the requirement of the dislocation of adjacent steel bars in the specification, wherein LaE represents the seismic anchoring length of the tension steel bars.
In this embodiment, the L-shaped short steel bars 61 and the L-shaped long steel bars 62 are sequentially and alternately inserted, and overlapped in a staggered manner, and the vertical staggered distance is not less than LaE; for improved reinforcement of the reinforcement.
In this embodiment, the step S1 further includes the following sub-steps: when the middle plate 1 of the side wall is paid out, paying out is needed at the lower part of the top plate 5 and the side wall of the side wall, and a groove is formed at the lower part of the top plate 5 of the side wall and the side structural steel bar corresponding to the side wall for planting the steel bar; because the through hole cannot be punched in the top plate 5, in order to reinforce the steel bar at the top plate 5, the corresponding positions of the lower part of the top plate 5 and the side wall are firstly paid off, in order to prevent the top plate 5 and the side wall steel bar of the APM structure from being damaged when the steel bar is planted and a hole is opened, an electric pneumatic pick is needed to manually groove the lower part of the top plate 5 and the side wall, and meanwhile, in order to ensure that new concrete and old concrete are effectively connected, the kicking depth is more than or equal to 30mm deep, and the steel bar in two directions needs to be leaked; and a hole is formed in the middle plate 1 at the position of the vertical steel bar 2 on the same side wall, and the distance between the holes and the distance between the vertical steel bars 2 on the same side wall.
In this embodiment, the implanted reinforcing steel bars include short reinforcing steel bars and long reinforcing steel bars, the leakage length of the short reinforcing steel bars is not lower than LaE, the leakage length of the long reinforcing steel bars is less than two times LaE, the long reinforcing steel bars and the short reinforcing steel bars are implanted alternately and overlapped in a staggered manner, and the vertical staggered distance is not less than LaE; for improved reinforcement of the reinforcement.
In the embodiment, the side structural steel bars and the steel bar embedded steel bars are subjected to single-side lap welding, the welding length is LaE, staggered joints need to be noticed during welding, and the distance between the upper staggered joint and the lower staggered joint is not less than LaE; for improved reinforcement of the reinforcement.
In this embodiment, the aluminum plate 3 is a honeycomb aluminum plate 3; for improving the strength of the aluminum sheet 3.
In the embodiment, a plurality of opposite tension rods 7 are arranged between the aluminum plate 3 and the composite wood template 4; the composite wood formwork is used for reinforcing the aluminum plate 3, wherein the opposite tension rod 7 is made of aluminum alloy, the opposite tension rod 7 and the aluminum plate 3 are of permanent structures, the composite wood formwork is not detached after the structure is completed, and the composite wood formwork 4 needs to be detached after the structure is completed.
In the embodiment, the screw thread end of the opposite tension rod 7 penetrates through the aluminum plate 3 and is connected with the backing plate 8; the aluminum honeycomb plate joint is used for preventing the screw rod from damaging the aluminum honeycomb plate 3 in the stress process, and meanwhile, the joint of the two aluminum honeycomb plates 3 is processed into an L-shaped joint for preventing the joint from deforming and leaking slurry.
Example 2
The embodiment 2 is further optimized on the basis of the embodiment 1, and provides a specific implementation manner of a certain airport terminal, which includes the following construction processes:
first, rail top air duct side wall reinforcement
(1) A steel plate bundle is arranged at the middle plate 1; and binding the vertical steel bars 2.
(2) APM rail top wind channel adopts the fenestrate mode of floor to carry out the steel bar connection with the structure medium plate 1:
manual kicking: firstly, paying off the corresponding position of the upper part of a middle plate 1 of the side wall, and kicking out grooves respectively from the upper part and the lower part of the position, corresponding to the lower part of the middle plate 1, of the side wall by using an electric pick in order to prevent the reinforcing steel bar of the middle plate 1 of the APM structure from being damaged during hole opening, wherein the thickness of the protective layer is kicked and beaten by the grooves at the upper part, the proper amount is that gluten in two directions is leaked, and the depth of 30mm is kicked and beaten by the grooves at the lower part in order to ensure the effective connection of new and old concrete;
the middle plate 1 is provided with holes: the through hole is opened at 2 positions of the vertical reinforcing bar of homonymy wall on medium plate 1, is perforated with medium plate 1, and the trompil interval is with 2 intervals of the vertical reinforcing bar of homonymy wall, and the hole is 60mm for the diameter.
Penetrating a steel bar: penetrate the L shaped steel muscle 6 the same with 2 diameters of vertical reinforcement after the hole is opened, wherein L type short reinforcement 61 penetrates length and is not less than 5 thickness of roof and adds LaE, and L type long reinforcement 62 spreads into length and is less than 5 thickness of roof and adds twice LaE, and L type long reinforcement 62, L type short reinforcement 61 should penetrate in turn, notice the dislocation overlap joint, and the upper and lower dislocation distance is for being not less than LaE and not less than 500 mm.
Welding the top: and performing single-side lap welding on the tops of the L-shaped steel bars 6 on the inner side and the outer side of the side wall.
Plugging holes: and (3) adopting the poured 1-type cement-based grouting material to perform structural plugging on the reinforcing steel bar hole and the protective layer kicked off from the upper part of the middle plate 1.
Welding the vertical steel bars 2: welding the vertical steel bar 2 of the side wall and the vertical steel bar 2 penetrated by the middle plate 1, wherein the welding length is LaE by adopting single-side lap welding, the staggered joint is noticed during welding, and the distance between the upper staggered joint and the lower staggered joint is not less than LaE and not less than 500 mm.
Binding wall reinforcing steel bars: and (5) binding horizontal steel bars of the side wall.
(3) And the APM structure rail top air duct is bound with the APM top plate 5 and the steel plate at the APM side wall part.
(4) The APM rail top air duct is connected with the structural top plate 5 and the side wall through steel bar planting:
manual kicking: paying off the corresponding positions of the lower part of the top plate 5 and the side wall, slotting the lower part of the top plate 5 and the side wall by using an electric pneumatic pick to prevent the top plate 5 and the side wall steel bars of the APM structure from being damaged when the steel bars are planted and perforating, and simultaneously, kicking and beating depth is more than or equal to 30mm and the steel bars in two directions need to be leaked to ensure the effective connection of new and old concrete;
Planting bar glue: and selecting the imported bar planting glue.
And (3) bar planting: the embedded steel bar depth is 350mm, the steel bar leakage length is LaE short steel bar not low, LaE long steel bar double, the long steel bar and the short steel bar should be implanted alternately, attention is paid to staggered overlapping, and the vertical staggered distance is not less than LaE and not less than 500 mm.
Vertical reinforcing steel bar 2 is linked: carry out single face overlap joint with side structure reinforcing bar and bar planting reinforcing bar and weld, welding length is LaE, notices the stagger joint during the welding, and the distance of upper and lower stagger joint is for being not less than LaE and not less than 500 mm.
Binding wall reinforcing steel bars: and binding the rest steel bars of the structural wall.
Secondly, installing the template
APM rail top wind channel adopts tectorial membrane board and 15mm thick honeycomb aluminum plate 3 two kinds because of its structure is special, and wherein wind channel lateral wall inboard adopts honeycomb aluminum plate 3, and the remaining part adopts compound wooden template 4, like wood plywood.
The wood balk is 50 multiplied by 100mm, and the beam plate supporting and reinforcing steel pipe is a common steel pipe with phi of 48.0 multiplied by 3.2; the side wall of the roof duct of the beam side form mining rail is reinforced by an M12 aluminum alloy split lead screw 7, one end of the aluminum alloy split lead screw is perforated and welded with a 20X 3mm end plate, the other end of the aluminum alloy split lead screw is an M12 screw opening so as to be used by a matched nut, the length of the aluminum alloy split lead screw 7 is 400mm, the aluminum alloy split lead screw 7 and the aluminum honeycomb plate 3 are of permanent structures, and the structure is not detached.
The honeycomb aluminum plate 3 is processed and transported by a manufacturer to be spliced on site, the installation is convenient and fast, the design height of the honeycomb aluminum plate 3 is the clearance height inside an air duct, the width of each honeycomb aluminum plate is 1.2m, a 50X 3mm permanent backing plate 8 (the splicing position of the honeycomb aluminum plate 3 is 100X 5 mm) needs to be padded at the position where an aluminum alloy screw rod is penetrated, the honeycomb aluminum plate 3 is prevented from being damaged by the screw rod in the stress process, and meanwhile, in order to prevent deformation and slurry leakage of the joint position, the L-shaped interface is processed at the junction of the two honeycomb aluminum plates 3.
Thirdly, pouring concrete
Follow the unloading of concrete from medium plate 1, will have 1 positions of lateral wall medium plate to open a hole according to interval 2m, aperture 0.1m, carry out the concrete through the trompil to the lateral wall and pour, should pour closely knit suitable in the hole that has the lateral wall when pouring, use the hand hammer to beat the lateral wall top when pouring, judge whether pour closely knit, have the hourglass circumstances of watering. When the air duct plate is poured, holes are formed in the position right above the air duct plate at intervals of 3m multiplied by 3m, the diameter of each hole is 0.1m, the holes are poured downwards, and the holes are hooked up manually after blanking. And after pouring is finished, the hole is blocked in a form that the middle plate 1 is used for hanging the mould to hang the hole.
Pouring concrete on the part without the middle plate 1: directly leave at side wall top construction template and establish the feed opening according to 2m, pour by the cooperation of artifical fork truck, use the hand hammer to beat side wall top during pouring, judge whether pour closely knit, have or not to leak the condition of watering. When the plate surface is poured, the concrete is transferred to the plate surface by a forklift, and then pouring is carried out manually.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A rail top air duct construction method is characterized by comprising the following steps:
s1: paying off the upper part of a middle plate (1) of the side wall, and forming a through hole in the middle plate (1) at the position of a vertical steel bar (2) of the same side wall;
s2: after the through holes are opened, sequentially penetrating a plurality of L-shaped steel bars (6) into the through holes and welding;
s3: after the L-shaped steel bars are welded, grouting and plugging the through holes, and welding the vertical steel bars (2) and the L-shaped steel bars (6);
s4: after the vertical steel bars (2) and the L-shaped steel bars (6) are welded, an aluminum plate (3) and a composite wood formwork (4) are installed below the side wall, the vertical steel bars (2) are clamped inside the aluminum plate (3) and the composite wood formwork (4), and the aluminum plate (3) is located on the inner side of the side wall;
s5: and finally, pouring concrete.
2. The method for constructing a rail-top duct according to claim 1, wherein the step S1 further includes the substeps of: if a through hole is formed, an electric pick is required to be used for construction in advance, a protective layer on the upper portion of the middle plate (1) is kicked out, and grooves are formed in the lower portion of the middle plate (1) until gluten in two directions is leaked.
3. A rail-roof air duct construction method according to claim 1, characterized in that the L-shaped reinforcing bars (6) comprise L-shaped short reinforcing bars (61) and L-shaped long reinforcing bars (62), the length of the L-shaped short reinforcing bars (61) penetrating into the middle plate (1) is not less than the thickness of the middle plate (1) plus LaE, and the length of the L-shaped long reinforcing bars (62) penetrating into the middle plate (1) is less than the thickness of the middle plate (1) plus two times LaE.
4. The method for constructing the rail-top air duct according to the claim 3, wherein the L-shaped short steel bars (61) and the L-shaped long steel bars (62) are alternately penetrated in sequence and overlapped in a staggered manner, and the upper and lower staggered distance is not less than LaE.
5. The method for constructing a rail-top duct according to claim 1, wherein the step S1 further includes the substeps of: when the middle plate (1) of the side wall is laid out, the lower part of the top plate (5) of the side wall and the side wall are laid out, and the side structural steel bars corresponding to the lower part of the top plate (5) of the side wall and the side wall are grooved for bar planting.
6. The method for constructing the rail-roof air duct according to claim 5, wherein the implanted reinforcing bars comprise short reinforcing bars and long reinforcing bars, the leakage length of the short reinforcing bars is not lower than LaE, the leakage length of the long reinforcing bars is less than two times LaE, the long reinforcing bars and the short reinforcing bars are alternately implanted and overlapped in a staggered manner, and the vertical offset distance is not less than LaE.
7. The method as claimed in claim 6, wherein the side structural steel bars and the steel bars are welded by single lap welding, the welding length is LaE, the welding needs to be performed with staggered joints, and the distance between the upper staggered joint and the lower staggered joint is not less than LaE.
8. A rail-top duct construction method according to claim 1, characterised in that the aluminium sheet (3) is a honeycomb aluminium sheet.
9. A rail-roof air duct construction method according to claim 1, characterized in that a plurality of split-tension rods (7) are arranged between the aluminum plate (3) and the composite wood formwork (4).
10. The rail top air duct construction method according to claim 9, wherein the screw thread end of the opposite tension rod (7) penetrates through the aluminum plate (3) and is connected with the backing plate (8).
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| CN202111506517.4A CN114016703A (en) | 2021-12-10 | 2021-12-10 | Rail top air duct construction method |
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