When civil construction adopts aluminum mold and assembly type construction, how to cooperate with electromechanical embedded?

2022-07-23 0 By

With the rapid promotion of assembly type and aluminum mold technology, mechanical and electrical cooperation with civil construction of embedded construction technology is also different.In this paper, the construction process of China Construction Third Engineering Bureau as an example, to see how to cooperate with mechanical and electrical assembly and aluminum mold embedded?Overall idea: when composite panels are used in prefabricated residential buildings, in order to avoid damage caused by the embedded line pipes of the floor being hit by the interior decoration nails of the upper and lower floors, it is considered to arrange the electrical embedded plane line pipes of the floor in the composite panel of the roof or the cast-in-place layer of the floor.The wire tube of the socket and switch box installed in the prefabricated outer wall is led upward to butt with the reserved tube in the composite plate;Sockets and other wire boxes installed on the indoor back pouring wall or back masonry wall can be led down as required to connect with the wire pipes in the floor cast-in-place layer.1. Construction process of embedded pipe in composite plate: fixing wire box → fixing hand hole mold → piping in composite plate → concrete pouring forming of composite plate → on-site piping connection operation points:1. Wire box fixation According to the position of the wire box in the in-depth design, the wire box will be spot-welded to the steel plate of the matching size in the wire box on the steel mold. The wire box is covered on the steel plate to prevent the left and right deviation, and the upper part of the wire box is fixed on the network frame with reinforcement welding to prevent the upper and lower deviation.2. Fix the hand hole mold first position the hand hole mold, the depth of the hand hole mold into the concrete layer of the composite plate is 3cm, and then spot weld the hand hole mold on the steel baffle plate of the die table.3. Pipe piping in the composite plate according to the design of the composite plate drawing, wire pipe connection box and hand hole are arranged in the reinforcement of the composite plate truss, and the depth of the direct head inlet joint into the hand hole is reserved at the hand hole about 1cm.4. After piping and reinforcing bar binding are completed, concrete shall be poured. After concrete maintenance, mould removal and pipeline cleaning shall be completed.5. Field pipe connection After the hoisting of the field composite plates is completed, connect the line pipes to be connected in the two connected composite plates with PVC short pipes of the same model in the hand hole.Key points of quality control :(1) during the deepening design, the lines and tubes of each system should be comprehensively arranged to reduce the crossing of pipelines. The crossing box should be set where the crossing cannot be avoided to ensure that there is only one layer of lines and tubes in the composite plate;(2) In order to prevent the composite plate from cracking due to the arrangement of line pipe, it is advisable to increase the tensile bar perpendicular to the line pipe above the line pipe across the composite plate to ensure the strength;(3) The inner wire box of the composite plate shall be fixed firmly on the die table when embedded, and no deviation shall occur;(4) In the production of composite plates, the wire box connection pipe must be connected with lock bar, and well blocked;(5) The PVC pipe direct head should be reserved for the inner pipe port of the hand hole of the composite plate, and well blocked;(6) The depth of the hand hole of the inner pipe of the composite plate should be controlled at 3cm, and the deviation should not be more than 5mm;(7) Foam plate should be used to block the hand hole of the composite plate.2, composite plate piping construction process: line to identify – field piping connections – line pipe fixed – port protection – concrete pouring inspection operation key points: 1, after the pipeline to identify the composite plate lifting, according to the mechanical and electrical construction drawing of the pipeline in the pipe route and the position of the line pipe out of the floor marked on the composite board.2. The field piping connection shall lay the PVC line pipe on the laminated plate according to the direction of the pipeline, leading to the corresponding floor surface position, and the line pipe laying shall pass through the truss bar on the laminated plate.3, line pipe fixation will be laid wire and truss bar binding together, play a fixed role.4, port protection use tape to wrap the PVC line pipe port on the floor surface, play a sealing protection role.Key points of quality control :(1) during the deepening design, the line pipes of each system should be comprehensively arranged to reduce pipeline crossing and ensure that there is only one line pipe in the cast-in-place layer as far as possible;(2) Interface sealing should be done on the floor surface of the line pipe;(3) When concrete is poured, it is necessary to send people on the spot to check whether the wired pipe is damaged or protrts from the finished surface of pouring, and repair it in time.3. The construction process of the connection between the precast exterior wall and the floor line pipe: the inner line pipe box of the precast exterior wall component is buried in advance → the operation points of the on-site pipe connection:1, prefabricated wall box line pipe embedded PC plant prefabricated wall components production, according to deepen the design of the cartridge box fixed position on PC mold components, according to line pipe to the line pipe laying in precast reinforced sandwich wall, end up out of the wall set aside about 5 cm thick foam block, reserved head directly into foam block and fixed position in the middle of wall face.2. On-site pipe connection After the on-site composite plate hoisting is completed, connect the upper line pipe of the composite plate with the line pipe on the lead inside the prefabricated wall through the reserved direct head.Key points of quality control :(1) when prefabricated outer wall components are embedded, the inner wire box should be fixed firmly on the mold table, and no deviation should occur;(2) The direct head of PVC pipe should be reserved for the end face of the inner pipe of the precast external wall member, and well blocked;(3) The foam blocks reserved at the top of the prefabricated outer wall should be close to the mold surface at the top of the outer wall, but should not be close to the interior surface of the outer wall. The spacing should be more than 5cm.(4) The depth of the direct head of the pipe into the foam block should be half of the length of the direct head, and firmly fixed with the foam block;(5) When concrete is poured, it is necessary to send people to check whether the cable pipe is damaged on the spot, and repair it in time if there is.4. Buried process of precast stair platform inner line pipe: reserved line box line pipe in stair member → reserved line pipe in front chamber floor → trans-lintel pipe connection1, stair components in the production of PC factory stair components, according to the in-depth design of the position of the wire box fixed on the PC component mold, will be connected to the line pipe according to the in-depth design of the staircase exit surface, reserved hand hole, hand hole reserved direct head, hand hole depth of 5 cm, direct head hand hole ground.2. Line pipes are embedded in the floor slab of the front room of the stairs. Line pipes are reserved in the floor slab of the front room of the stairs.3. Before leveling the transom lintel pipe, connect the reserved direct head in the stair plate with the reserved line in the floor of the front room.Key points of quality control :(1) the inner wire box of the precast stair component should be fixed firmly on the mold table when it is embedded, and no deviation should occur;(2) The direct head of PVC pipe should be reserved for the end face of the inner pipe of the precast stair member, and well blocked;(3) The depth of the reserved hand hole in the precast stair member into the board layer should be controlled at 5cm, and the deviation should not be greater than 2mm;(4) Foam board should be used to seal the hand hole;(5) The b-shaped bend at the transom lintbeam of the embedded line pipe in the cast-in-place floor should be prefabricated to ensure that the line pipe on the structural surface is close to the structural surface;(6) When concrete is poured, it is necessary to send people to check whether the cable pipe is damaged on the spot, and repair it in time if there is.5. Open configuration process of precast stair platform line pipe: preburied reserved line box of lintel inner pipe → open configuration operation points: 1. Preburied reserved line box of lintel inner pipe of lintel in cast-in-situ lintel, which is fixed on the aluminum mold.2. The down-line pipeline box of the stair platform is explicitly configured. When threading the cable box of the stair front room, the cable box shall be connected to the cable pipe and cable box of the bottom of the stair platform.Quality control points :(1) the height of the embedded wire box should be controlled at the bottom of the stair platform;(2) The installation of open piping on the bottom of the platform should be carried out synchronously with threading, otherwise the cover of the wiring box cannot be sealed and fixed;(3) PVC pipe shall not be used for explicit piping, but metal pipe shall be used, including lighting and fire fighting pipe.6. Embedment construction process of floor drain pipe: reserved floor drain sealing joint on composite plate → cast-in-place layer adding short connection operation points:1. During the production of the composite plate, the round steel sheet matching the inner diameter of the sleeve is welded to the steel mold according to the floor drain position of the deepened design, the screw is welded on the steel sheet, the water stop is covered on the steel sheet, and the upper end is clamped with a larger steel sheet and fixed tightly with screws.2, cast-in-place layer add short connection after the installation of the site composite board, install 15cm PVC short pipe of the same model inside the floor drain water stop section on the composite board.Key points of quality control :(1) the leakage and sealing joint in the composite plate should be accurate and fixed firmly;(2) During the construction of cast-in-place layer, the internal sealing of floor drain water stop joint should be done well.7. Buried construction process of water supply plane pipe: reserved pipe groove at cast-in-place layer → ground piping → pipe fixing Operation points: 1. Reserved pipe groove at cast-in-place layer After concrete pouring and forming, according to the layout direction of water supply pipe, strip DN50 steel pipe is used to reserve pipe groove on the ground before concrete initial setting.The depth of the pipe groove is about 1 cm.2, ground piping in the pipe groove installed PPR water supply pipe, layout to the toilet and kitchen.Key points of quality control :(1) the groove for water pipe should be horizontal and vertical;(2) The pipe pressure test shall be completed before the leveling layer covers the water pipe.8, feed water plane tube stick roof construction process: composite plate within the reserve and reserve chute wall casing – pipe installation operation key points: 1, the composite plate in reserve chute in accordance with the drawings, mark the position of the chute on the composite die, in the truss stiffened composite plate chute, C payments production laying underground at the top of the chute and the truss stiffened spot welding connection.2, reserved wall casing according to the drawing design, in the composite beam or cast-in-place beam embedded pipe pipe pipe laying required beam casing.3, pipeline installation through the chute fixed hanger installation water supply pipe under the roof.Quality control points :(1) chute processing should be smooth, laying on the die table should be close to the table;And the truss bar fixed firmly;And do a good sealing;(2) The embedded chute shall be horizontal, flat and vertical, and be embedded perpendicular to the direction of the pipeline;(3) In order to avoid affecting the reinforcement arrangement in the composite plate, the height of the chute should not be greater than 23mm;(4) The embedded wall casing shall be installed strictly in accordance with the design size and position, and the casing shall be horizontal, flat and vertical.Section 9, the finished water stop aluminum mold embedded construction process: aluminum mold on section water stop positioning – aluminum mold opening – aluminum mould check section water base installed – section water stop suit on base – in water base coat screw to check section water covering installed, covering up and down the lock – section water stop screw protection – complete the installation and check the operation main points: 1, aluminium mould positioning, according to your drawings to check water section.2. The base of the water stop joint is fixed on the aluminum mold.3. The center point of the water stop joint plus the screw is locked on the aluminum mold with the screw.4. Lock the water stop joint and lock the water stop joint on the aluminum mold.5. Protect the upper end of the water stop section with adhesive tape after installation.Key points of quality control :(1) aluminum mold positioning should be accurate, accurate opening, appropriate size, convenient fixation;(2) the water stop is fixed in the center of the method, fixed on the aluminum mold, should be a molding;(3) THE PPR tube is buried into the wall, forming once, and fixed on the aluminum mold through the plug;(4) According to the requirements of the specification, the allowable deviation of the verticality of the plastic riser shall not exceed 3mm per meter, and the allowable deviation of the full length (above 5m) shall not exceed 15mm. Therefore, the embedment of the finished water stop shall meet the requirements of the construction accuracy of the structural floor. The deviation of the adjacent upper and lower floors shall not exceed 9mm, and the overall deviation shall not exceed 15mm.Currently, the accuracy deviation of PC composite plate installation is more than 20mm, so it does not meet the requirements of using finished water stop joint.10. The construction process of steel casing aluminum mold fixation: positioning of multi-casing aluminum mold → preparation of triangular fixing screw → opening of fixed screw on aluminum film → fixing screw → casing installation → multi-casing fixed cover plate → screw protection Operation points: 1. Positioning of casing aluminum mold on aluminum mold accurately locates the position of casing.2. Aluminum mold opening is completed by one-time opening, and the triangle screw is fixed.3. Install the casing. Install the casing on the triangle screw and fix it.4. Cover the bushing with a template to prevent concrete from entering, and wrap the screw rod with adhesive tape.Key points of quality control :(1) aluminum mold positioning should be accurate, accurate opening, appropriate size, convenient fixation;(2) The casing is fixed on the aluminum mold in the form of inner diameter plus support to prevent casing deviation.11. The construction process of electric box embedding and fixing: the four corners of the electric box with Angle steel → the electric box is fixed on the steel bar → the electric box is filled with benzene plate → the electric box is supported with PVC pipe → the installation and protection are completed. Operation points: 1.2. The Angle steel of the electric box is welded on the steel bar by the Angle steel.Key points of quality control :(1) the indoor electric box is buried in the dark. By fixing the electric box on the steel bar and adding Angle steel at the four corners of the electric box, the deviation of the electric box is prevented, and the concrete will not be deformed in the process of pounding;(2) The indoor electric box should be punched once, and the connecting wire pipe should be installed and fixed firmly;(3) The indoor electric box should be filled with benzene plate, and the box surface and box around the gap sealed with adhesive tape.12, connected wire box fixed with T shaped support process flow: connected bottom box assembly → wall column positioning → bottom box fixed on the steel bar → bottom box rear end with T shaped support → overall protection operation points: 1, connected wire box assembly through rib connected bottom box assembly.2. Position the bottom box on the wall column.3. The connected bottom box is fixed on the steel bar by welding the connected bottom box.4, at the back end of the bottom box plus T font support in the back end of the connected bottom box plus T font support.Quality control points :(1) the wire box is fixed on the steel bar, and the t-shaped support is added on the back of the wire box to prevent the left and right side of the wire box and the front and back deviation;(2) The assembly of the ribbed connected bottom box shall ensure that the surface of the connected bottom box is flat, and the installation shall ensure that the height is consistent without tilt;(3) Sealing should be done inside the bottom box.Note: Welcome to pay attention to xiaobian’s wechat public account “Civil Intelligence Tank”, which has a lot of information about the construction industry organized by Xiaobian, including the first construction, second construction, cost, fire fighting videos and courseware. Welcome to join us