CN113374138B - Construction method of concrete dry-hanging curtain wall - Google Patents
Construction method of concrete dry-hanging curtain wall Download PDFInfo
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- CN113374138B CN113374138B CN202110780113.8A CN202110780113A CN113374138B CN 113374138 B CN113374138 B CN 113374138B CN 202110780113 A CN202110780113 A CN 202110780113A CN 113374138 B CN113374138 B CN 113374138B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
- E04B2/96—Curtain walls comprising panels attached to the structure through mullions or transoms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
- E04B2/96—Curtain walls comprising panels attached to the structure through mullions or transoms
- E04B2/965—Connections of mullions and transoms
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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
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides a concrete dry-hanging curtain wall construction method, when the prefabricated hanging plates are installed, the prefabricated hanging plates are numbered in sequence, then a dry-hanging device and an adjusting device are installed on the back surfaces of the prefabricated hanging plates, then a test section solid sample plate is installed, and formal installation is carried out after the test assembly is qualified; after the installation, the prefabricated hanging plate is positioned and adjusted, and the width of the plate seam is ensured to be consistent. Can guarantee prefabricated link plate and installation wall phase-match through the try-on, avoid appearing the condition that needs relapse the dismouting, do benefit to and improve the efficiency of construction to can fix a position the adjustment to prefabricated link plate after the installation is accomplished, guarantee that the slab joint width is unanimous, can guarantee the degree of consistency of slab joint on the whole decorative cover, do benefit to follow-up construction, be convenient for improve the efficiency of construction, shorten construction cycle.
Description
Technical Field
The invention belongs to the field of building curtain walls, and particularly relates to a construction method of a concrete dry-hanging curtain wall.
Background
The concrete curtain wall is decorated by adopting the concrete prefabricated hanging plate, the plate production is carried out in a factory by virtue of a building industrialized manufacturing system which is increasingly popular, the framework is processed in a centralized site, the whole exterior wall decoration operation can be completed by only installing and adjusting the plate on the site, a large amount of labor force can be saved, the construction period can be effectively shortened, the appearance elegance of the building engineering can be improved, the quality and the efficiency of the building engineering can be improved on the premise of meeting the requirements of energy conservation and environmental protection, and the concrete curtain wall becomes a new breakthrough point of the building decoration engineering in China at present.
The concrete prefabricated hanging plate is a non-bearing prefabricated concrete external wall plate which is arranged on a main body structure and plays roles of enclosure and decoration. The plate is produced in an industrialized mode, has the advantages of high construction speed, good quality and low maintenance cost, and simultaneously puts higher requirements on the quality of the hanging plate and the bearing capacity of the structure. In order to meet the requirements of bearing and the like, the existing concrete prefabricated hanging plate is thick, heavy in self weight and time-consuming and labor-consuming in installation.
The precast concrete link plate directly transports to the construction site after the prefabrication is accomplished, installs on the outer wall after acceptance is qualified, but this kind of acceptance only monolithic acceptance, often appears having unmatched phenomenon after the outer wall installation certain interval, leads to needing to dismantle and reinstate and install again after the adjustment, brings very big inconvenience, seriously influences the efficiency of construction.
On the other hand, when the prefabricated link plate is hung futilely, secondary joist and main joist fixed connection set up the link plate again on the secondary joist and be used for installing prefabricated link plate, are difficult to carry out the fine setting of installation position between each part in the work progress, lead to the installation inconvenient, influence whole construction progress. And in the prefabricated link plate installation, the clearance between two prefabricated link plates is difficult to adjust, leads to the interval adjustment of plate seam to waste time and energy, influences the efficiency of construction.
Disclosure of Invention
The invention aims to provide a concrete dry-hang curtain wall construction method capable of improving construction efficiency.
The invention provides a construction method of a concrete dry-hanging curtain wall, which comprises the following steps:
s.1, base layer processing;
s.2, measuring and paying off;
s.3, installing an adapter;
s.4, installing a keel component;
s.5, installing a lightning protection system;
s.6, installing an insulating layer;
s.7, rechecking the control line in the S.2;
s.8, mounting the prefabricated hanging plate,
s.8.1, numbering the prefabricated hanging plates in sequence,
s.8.2, installing a dry hanging device and an adjusting device on the back of the prefabricated hanging plate,
s.8.3, carrying out test section entity sample plate installation,
s.8.4, formally installing after the trial assembly is qualified;
s.9, positioning and adjusting the prefabricated hanging plates to ensure that the plate seam widths are consistent;
and S.10, plate seam processing.
In one embodiment, said s.2 comprises:
s.2.1, horizontal control lines are arranged, wherein the elevation lines are used as main datum lines, transverse datum lines are arranged by taking floors as units, transverse division is performed from top to bottom, and the division size is the dry hanging height of the two prefabricated hanging plates;
s.2.2, longitudinal control lines, wherein a plurality of longitudinal datum lines are uniformly arranged on the outer wall surface, and longitudinal division is carried out according to the division size to form a plane control net;
and S.2.3, rechecking on site.
In one embodiment, said s.3 comprises:
s.3.1, marking out the center of the embedded part,
s.3.2, a pair of adapter pieces are welded on the center line of the embedded part in an aligned mode,
and S.3.3, performing anticorrosive and antirust treatment on the welding line.
Furthermore, the keel assembly comprises a main keel and a secondary keel, the main keel is a square steel pipe, and a connecting hole is formed in the main keel; the secondary keel is an angle steel; firstly, mounting a main keel, wherein the main keel is detachably connected with the adapter; and installing a secondary keel again, wherein the secondary keel is arranged between the two main keels, one end of the secondary keel is detachably connected with one main keel, and the other end of the secondary keel is fixedly connected with the other main keel.
The lightning protection system comprises a main lightning protection belt, a down lead and a grounding device, wherein one end of the main lightning protection belt is connected with the main keel, the other end of the main lightning protection belt is connected with the down lead, and the other end of the down lead is connected with the grounding device.
In the S.8.4: firstly, mounting the prefabricated hanging plates at the corners, and then sequentially mounting other prefabricated hanging plates from bottom to top; the single prefabricated hanging plate is installed from bottom to top when being installed.
And S.9, adjusting the prefabricated hanging plate layer by layer one by one, wherein during adjustment:
firstly, adjusting horizontal deviation, and adjusting the width of plate seams among all prefabricated hanging plates in the same horizontal direction to be consistent through a dry hanging device and an adjusting device;
and then, adjusting the vertical deviation, and adjusting the verticality of each prefabricated hanging plate in the same vertical direction through an adjusting device to ensure that the width of the vertical plate seam is consistent.
And S.10, filling foamed polyethylene foam rods between the prefabricated hanging plates from top to bottom, cleaning the peripheries of the prefabricated hanging plates, sticking protective adhesive tape paper, injecting sealant, and performing waterproof sealing.
The prefabricated hanging plate comprises a panel, a rib belt, a dry hanging block, a node reinforcing rib and a rib belt reinforcing rib; the rib belts are arranged on the back of the panel in a grid shape, and divide the back of the panel into a plurality of mutually independent dry hanging grooves; the dry hanging blocks comprise hole groups, each hole group comprises a strip-shaped hole and a round hole, the hole centers of the strip-shaped holes and the round holes are positioned on the same straight line, and each dry hanging block is arranged in the corresponding dry hanging groove; the node reinforcing ribs are arranged at the intersection of the panel, the rib belts and the dry hanging blocks; the rib area strengthening rib is including leading to long muscle and splice bar, and a pair of length direction along the rib area that leads to long muscle sets up, and the splice bar is connected between two logical long muscle.
The adjusting device comprises a first connecting piece, an adjusting assembly and a second connecting piece; the adjusting assembly comprises a fixing piece and a moving piece, the moving piece moves back and forth along the fixing piece, the fixing piece is connected with the first connecting piece, and the moving piece is connected with the second connecting piece.
When the prefabricated hanging plates are installed, the prefabricated hanging plates are numbered in sequence, then a dry hanging device and an adjusting device are installed on the back faces of the prefabricated hanging plates, then a test section solid sample plate is installed, and then formal installation is carried out after the test installation is qualified; after the installation, the prefabricated hanging plate is positioned and adjusted, and the width of the plate seam is ensured to be consistent. Can guarantee prefabricated link plate and installation wall phase-match through the try-on, avoid appearing the condition that needs relapse the dismouting, do benefit to and improve the efficiency of construction to can fix a position the adjustment to prefabricated link plate after the installation is accomplished, guarantee that the slab joint width is unanimous, can guarantee the degree of consistency of slab joint on the whole decorative cover, do benefit to follow-up construction, be convenient for improve the efficiency of construction, shorten construction cycle.
Drawings
FIG. 1 is a process flow diagram of a preferred embodiment of the present invention.
Fig. 2 is an enlarged elevation sectional view of a node block in the preferred embodiment of the present invention.
Fig. 3 is a cross-sectional enlarged schematic view of a node block in the preferred embodiment.
Figure 4 is an enlarged view of the assembly of the keel assembly of the preferred embodiment.
Fig. 5 is an enlarged schematic view of a mounting node at the adjusting device in the preferred embodiment.
Fig. 6 is a front enlarged view of the adjusting device in the preferred embodiment.
Fig. 7 is a schematic enlarged top view of the adjusting device in the preferred embodiment.
Fig. 8 is a schematic front view of the prefabricated hanging plate in the preferred embodiment.
Fig. 9 is an enlarged cross-sectional view taken at a-a in fig. 8.
Fig. 10 is an enlarged cross-sectional view at B-B in fig. 8.
Fig. 11 is an enlarged schematic view of the rib belt reinforcing ribs in the prefabricated hanging plate.
Fig. 12 is an enlarged schematic view of an installation node at the dry hanging device in the preferred embodiment.
Fig. 13 is an enlarged schematic view of the dry-hang device and the secondary keel in the preferred embodiment.
Figure 14 is an enlarged front view of the keel connection of the preferred embodiment.
Figure number
1, embedding parts;
2-adaptor, 21-waist round hole;
3-keel assembly, 31-main keel, 32-secondary keel;
4-adjusting the position of the device,
41-first connecting piece, 411-board connecting edge, 412-adjusting edge, 413-avoiding groove; 42-an adjusting component, 421-a fixed component, 422-a movable component;
43-second connecting piece, 431-strip-shaped hole;
5, prefabricating the hanging plate,
51-the panel,
52-rib belts, 521-side ribs, 522-longitudinal ribs, 523-transverse ribs, 53-dry hanging blocks, 531-long round holes and 532-round holes,
54-a node reinforcing rib is arranged on the upper surface of the steel plate,
55-ribbed reinforcing rib, 551-through long rib and 552-connecting rib;
6-dry hanging device, 61-keel connecting piece, 62-wallboard connecting piece; and 7, connecting angle steel.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the concrete dry-hang curtain wall construction method provided by this embodiment includes the following specific steps.
The first step, base layer treatment.
The wall surface is cleaned, the laitance and the loose part on the surface of the wall body are removed, and the surface of the wall body is ensured to be clean and free of other impurities and pollutants. The basic unit need be ensured to level, carries out the shutoff to concrete wall bolt hole, scaffold frame hole to it needs to repair to have the hole to too big and wall body of basic unit wall body deviation.
Secondly, finding and cleaning the outer wall embedded steel plate according to the preset position reserved in the structural construction, checking whether the position of the embedded steel plate is correct, carrying out reinforcement construction on the embedded part when the embedded part is found to be offset, reinforcing the embedded part on site by adopting a rear anchor bolt steel plate, and entering the next procedure after the embedded part is installed and qualified through a tensile test.
And secondly, measuring and setting out.
The accuracy of measuring the paying-off is directly related to the customization of a precast concrete curtain wall plate mould, the manufacture of a curtain wall plate, the construction quality of the project such as keel processing and framework installation and the construction progress. In order to ensure the construction progress and meet the measurement precision, the measurement method must be simple and reliable, an installation measurement scheme is formulated on the basis of fully considering component machining errors, process inspection data, measurement and installation errors and various environmental influences, and the adjustment is properly made according to specific requirements in the construction process. Installing the control net by adopting a mode of arranging the net in a grading way and controlling step by step, and performing accurate paying-off on an in-out line and an axis position according to the curtain wall, a door and window stop drawing, a building drawing and a grid large sample drawing by combining a main structure construction elevation control point; strictly balancing the observation result to ensure the quality and progress of installation; the measuring instrument is periodically checked and proofread.
Horizontal control line: firstly, rechecking the elevation control network points, guiding the elevation control points to the periphery of the building after confirming that the elevation control points are correct, and making firm pile points and marks as working datum points. Guiding the elevation point to the floor of the construction building by using a level gauge and a steel tape, and taking a standard line of +/-0.000 m as a main datum line; then, a leveling instrument is used for guiding and then a transverse datum line is set by taking a floor as a unit. The transverse division starts from the top of the outer wall, the dry hanging height value of two sheets is taken as a division unit to be carried out from top to bottom, and the datum line of each layer is utilized for fine adjustment to eliminate errors.
Longitudinal control line: the deviation of the peripheral hole of the original structure is measured once, the deviation value of the actual size and the design size is analyzed, if the deviation of the actual size on site is small, the error is eliminated through reasonable division by combining with the reserved hole of the door and the window, otherwise, the structure needs to be processed. A theodolite is used for setting a longitudinal datum line on the building outer wall at intervals of 20 m. And (3) carrying out longitudinal division on the building outer wall according to the outer wall opening and division size (the dry hanging width value of two sheets is taken as a unit), using a plumb lead, measuring the distance between an upper point and a lower point and a datum line, and correcting the deviation to bounce. The longitudinal control lines and the transverse control lines form a plane control net for paying off.
And (3) field rechecking: the inspection and the inspection of the external door and window openings, the sizes and the positions of the openings can meet the relevant design requirements and quality, and the door and window frame needs to be installed. The rainwater pipes, embedded parts and wall-penetrating pipelines in the outer wall surface need to be installed in advance.
And checking the main control line before pre-hoisting and arranging and putting in the prefabricated hanging plate positioning line. According to the special construction organization design of the woven prefabricated hanging plate, according to the typesetting size of the prefabricated hanging plate, control axes and control points of technical indexes such as verticality, flatness and elevation of the prefabricated hanging plate are lofted at corresponding positions, and the accuracy of main keels, secondary keels and connecting nodes on the steel skeleton is rechecked according to the axes and the control points, so that the prefabricated hanging plate can be placed in place at one time in the installation process.
And thirdly, mounting the adapter.
And determining and adjusting the position of the stressed steel keel adapter according to the center line of the embedded part. When the connecting piece is installed, the plane and the in-and-out position of the connecting piece are controlled according to the horizontal line and the longitudinal line so as to ensure that the connecting piece is installed accurately. The adaptor adopts No. 12 national standard channel steel, and the connection between the adaptor and the embedded part adopts 5mm high weld seam welding.
All welding seams are full, welding beading, incomplete penetration, incomplete welding, undercut, pits and the like are not allowed to occur, measures are taken for burn-through positions, and the quality of the welding seams is guaranteed. After welding, the welding slag should be cleaned in time, and open-air welding cannot be performed in rainy days; performing secondary anti-corrosion and anti-rust treatment on the welding seam; and after the welding process is finished, performing self-inspection and checking the quality and the geometric dimension of the welding line, filling a hidden list after the self-inspection is qualified, reporting supervision and acceptance, and brushing the welding line with a secondary-coating antirust paint after the acceptance is qualified.
And fourthly, installing a keel component.
The keel assembly includes a main keel and a cross keel. The main keel and the connecting piece are connected by two 12mm bolts. The main keel is made of 140x80x4 hot galvanized square steel pipes, and the secondary keel is made of L63x5 hot galvanized angle steel.
Installing a main keel: after the materials, positions and sizes of the embedded parts are determined to be correct, antiseptic treatment is carried out in advance. Checking whether the sizes and hole positions of the holes of the adaptor and the bolt corresponding to the main keel are correct, assembling accessories, core sleeves, anti-corrosion gaskets and the like on the main keel, connecting the main keel and the adaptor by using the bolt, adjusting the verticality and the levelness of the main beam, tightening a nut, adjusting the verticality and the levelness of the whole curtain wall, and reinforcing the main node. The position is correct when the device is installed.
Installing secondary keels: one end of the secondary keel is welded on the main keel, and the other end of the secondary keel is connected to the main keel through an adjustable bolt. Welding and bolted connection point installation are required to be firm, seams are tight, the installation of the cross beam on the same layer is carried out from bottom to top, and inspection, adjustment, correction and fixation are carried out at any time, so that the quality requirements are met.
And fifthly, installing a lightning protection system.
The construction of the lightning protection system and the installation of the main keel are carried out synchronously, the flat steel strip, the down lead of the main lightning protection strip and the joint of the flat steel strip are both subjected to lap welding, and the length of a lap welding seam is not less than 80 mm. And the lightning protection system is directly grounded, and the lightning protection system and the power supply system are not used together to be grounded.
And sixthly, mounting a heat insulation layer.
The heat preservation selects rock wool board, and rock wool board designs the laying mode earlier before using, according to the main joist check, confirms rock wool board positioning line, carries out from bottom to top along the horizontal direction transversely according to 1/2 board length crisscross shop pastes. The rock wool boards must be butted and tightly squeezed with each other, so that the integrity of the rock wool boards is ensured, and the cutting of the rock wool boards is reduced; if the cutting is needed, the cutting is carried out according to the calculated size, no gap exists, the error of the straight line of the cutting edge is less than 5mm, the splicing gap is not more than 2mmm, the width of the narrow rock wool board for inlaying is not less than 150mm, and the rock wool board is tightly attached to the wall surface. Fixing plates are vertically connected at the corners of the wall in a staggered manner, so that the corners are straight and vertical; the rock wool boards at the female and male corners are interlocked in a staggered manner; the rock wool at the four corners of the door and window opening can not be spliced, a whole rock wool board is adopted to cut and form a cut perpendicular to the board surface, and the same rock wool board is applied to the corners of the wall surface for fixation.
And (4) drilling holes at the anchor bolt installation positions according to the construction drawing, knocking in the nylon sleeve with the disc, and compressing the rock wool plate. At least 6 anchoring parts are arranged on each square meter of wall surface, at least 2 anchoring parts are arranged on each rock wool board, and one anchoring part is fixed at four round corners of each anchoring part. Along the periphery of the window, at least 3 anchoring parts are arranged on each side.
And seventhly, rechecking the control line.
And eighth, mounting the prefabricated hanging plate.
The prefabricated hanging plate of the incoming lot that will accept will be numbered according to the hoist and mount order, will prefabricate the surperficial silt of hanging plate and dust clean up simultaneously to install dry-hang device and adjusting device in advance according to the hoist and mount order.
And (3) installing a test section entity template before the prefabricated hanging plate is officially installed, and officially installing the prefabricated hanging plate after the entity template is installed, inspected and accepted.
During formal installation, the prefabricated hanging plates are hoisted sequentially in a layered or segmented mode and are in place according to control lines. And (4) adopting temporary fixing measures, and after the position is accurately positioned according to the level point and the axis correction position, constructing and fixing the connection node according to the design requirement.
For the wall surface where a plurality of prefabricated hanging plates are installed, corner parts are installed firstly, then other prefabricated hanging plates are installed sequentially from bottom to top, a single wall plate is installed from bottom to top, and the wall surface is adjusted layer by layer one by layer in the installation process. The corner part is lifted easily and obliquely swung, the outer hanging plate, the guy rope and manual assistance are lifted by utilizing the balance rod for positioning, the safe and efficient lifting is realized, and the overturning in the lifting process is prevented. The prefabricated link plate should adopt the wire rope that has enough safe deposit when lifting by crane, and the horizontal contained angle of wire rope and component should not be less than 45, need to inspect rings and snap ring before the hoist and mount, when treating that the prefabricated link plate bottom is a little higher than the installation level elevation, the artifical assistance is hung it slowly to corresponding hanging point position and is installed, unloads the rigging after treating to connect firmly.
And ninthly, positioning and adjusting the prefabricated hanging plate to ensure that the plate seam width is consistent.
The horizontal deviation is adjusted, the horizontal displacement of the prefabricated hanging plate is adjusted, the prefabricated hanging plate is accurately positioned, and the width of a seam between the prefabricated hanging plates in the same horizontal direction in the later stage is ensured to be consistent.
And (4) adjusting vertical deviation, namely slightly adjusting vertical deviation of an adjusting part at the lower part of the prefabricated hanging plate. Through repeated measurement and adjustment, the installation quality such as the flatness of the external prefabricated hanging plate and the perpendicularity of the external wall meets the standard requirement, and the prefabricated hanging plate is adjusted to be in place.
And step ten, plate seam processing.
After the whole construction vertical face is installed from bottom to top to finish dry hanging of concrete curtain wall plates and the verticality of the vertical face is confirmed to reach the standard, foamed polyethylene foam rods are filled between the material plates from top to bottom, meanwhile, the periphery of the plates is cleaned, protective adhesive tape paper (to prevent the sealant from polluting the surface of the stone) is pasted, sealant is injected for sealing treatment, and one waterproof material or two waterproof materials are selected for sealing according to different regional requirements.
And step eleven, cleaning the curtain wall.
The protective measures are taken for all parts of the curtain wall in the construction process, after the sealing glue is solidified and reaches the due strength, the adhesive on the surface is removed in time, slight pollution is caused, the board surface is wiped clean by cotton gauze, and the residual glue or other firm-adhered sundries on the board surface are carefully scraped by a blade.
The big appearance of node after this embodiment construction is accomplished is shown in fig. 2, fig. 3, the concrete curtain wall that hangs futilely that this embodiment provided, including built-in fitting 1, adaptor 2, fossil fragments subassembly 3, adjusting device 4, prefabricated link plate 5 and dry-hanging device 6, built-in fitting 1 is pre-buried in the concrete main part, fossil fragments subassembly 3 links to each other with built-in fitting 1 through adaptor 2, the assembly of device 6 and fossil fragments subassembly 3 is hung futilely to the upper end of prefabricated link plate 5, the assembly of adjusting device 4 and fossil fragments subassembly 3 is passed through to the lower extreme of prefabricated link plate 5.
In the embodiment, the embedded part 1 is made of galvanized steel plates and is embedded in the concrete foundation through a pair of chemical bolts, and then a pair of adapters 2 are welded outside the embedded part 1. The adaptor 2 selects channel steel, a pair of waist circular holes 21 are formed in the outer end of the adaptor 2, the adaptor 2 is arranged in pairs, the inner ends of the two adaptors 2 are welded with the embedded part 1, and the area between the two adaptors 2 is used for installing the keel assembly 3.
As shown in fig. 4, the keel assembly 3 includes main keels 31 and cross keels 32; the main keel 31 adopts a hot galvanized steel square pipe, a through hole is formed in the position, corresponding to the waist round hole 21, of the main keel, and during installation, the through hole and the waist round hole 21 are aligned and then locked through a bolt and a matched nut, and a base plate is arranged to improve connection stability. After the main keels 31 are installed, the secondary keels 32 are installed between the two main keels 31. Galvanized angle steel is selected for use by the secondary joist 32, a mounting hole is formed in the end portion of one side of the secondary joist 32, the end of the mounting hole is connected with the main joist 31 through connecting angle steel 7, the other end of the secondary joist is directly welded with the main joist 31, and a hole group is formed in the other side of the secondary joist 32 and used for mounting the dry hanging device 6. A through hole is formed in the connecting angle steel 7, one side of the connecting angle steel 7 is locked with the secondary keel 32 through a fastener penetrating through the through hole and the mounting hole, and the other side of the connecting angle steel is welded with the main keel 31.
The installation of fossil fragments subassembly 3 installation back installation heat preservation is cotton, and rock wool board is chooseed for use to the heat preservation cotton, and rock wool board designs earlier the laying mode before using, according to 31 divisions of main joist, confirms rock wool board positioning line, carries on from bottom to top transversely according to 1/2 long crisscross pavements of board along the horizontal direction. The rock wool boards must be butted and tightly squeezed with each other, so that the integrity of the rock wool boards is ensured, and the cutting of the rock wool boards is reduced; if the cutting is needed, the cutting is carried out according to the calculated size, no gap exists, the error of the straight line of the cutting edge is less than 5mm, the splicing gap is not more than 2mmm, the width of the narrow rock wool board for inlaying is not less than 150mm, and the rock wool board is tightly attached to the wall surface. Fixing plates are vertically connected at the corners of the wall in a staggered manner, so that the corners are straight and vertical; the rock wool boards at the female and male corners are interlocked in a staggered manner; the rock wool at the four corners of the door and window opening can not be spliced, a whole rock wool board is adopted to cut and form a cut perpendicular to the board surface, and the same rock wool board is applied to the corners of the wall surface for fixation. After the heat preservation cotton is installed, the prefabricated hanging plate 5 is installed through the dry hanging device 6 and the adjusting device 4.
As shown in fig. 5, the adjusting device 4 comprises a first connecting member 41, an adjusting assembly 42 and a second connecting member 43 for assembling the prefabricated cladding panels 5 on the cross runners 32 of the keel assembly 3.
As shown in fig. 6 and 7, the first connecting member 41 is an angle bracket, and includes a plate connecting edge 411 and an adjusting edge 412 perpendicular to each other. The board connecting edge 411 is provided with a pair of mounting holes for connecting with the prefabricated hanging board 5, and the bottom of the adjusting edge 412 is provided with an avoiding groove 413 so that the second connecting piece can move up and down under the action of the adjusting component 42. Thereby realizing the adjustment of the distance between two adjacent prefabricated hanging plates 5 in the vertical direction.
The adjusting assembly 42 includes a fixed member 421 and a movable member 422, the fixed member 421 is a threaded sleeve, the movable member 422 is a screw rod, and the screw rod is threadedly connected in the threaded sleeve. During assembly, the fixing member 421 is disposed on the adjusting edge 412 of the first connecting member 41, welded above the avoiding groove 413, and connected to the bottom end of the movable member 422.
The second connecting member 43 is made of angle steel, and has a pair of long circular holes 431 formed in one side thereof as connecting holes, and the other side thereof extending into the avoiding groove 413 to be connected to the movable member 422. The second connecting piece is assembled with the secondary keel 32 through a fastener penetrating through the long circular hole 431, and the distance between the two prefabricated hanging plates 5 in the horizontal direction can be conveniently adjusted through the long circular hole 431.
As shown in fig. 8, the prefabricated cladding panel 5 comprises a panel 51, a rib band 52, a dry-hanging block 53, a node reinforcing rib 54 and a rib band reinforcing rib 55. The prefabricated hanging plate 5 is an integral prefabricated member, wherein the panel 51 is a rectangular plate, and a color ribbed plate with the thickness of 25mm is selected. The thickness of the rib belt 52 is designed to be 70mm, the concrete strength grade is C40, the rib belt 52 comprises a side rib 521, a longitudinal rib 522 and a transverse rib 523, the side rib 521 is arranged along the side edge of the panel 51 to enclose the back of the panel 51 into a dry hanging area, the longitudinal rib 522 and the transverse rib 523 are arranged in the side rib 521 in a criss-cross mode to divide the dry hanging area on the back of the panel 51 into four mutually independent dry hanging grooves, and the dry hanging blocks 53 are arranged in the dry hanging grooves respectively.
The dry hanging block 53 is a rectangular block, the dry hanging block 53 comprises a hole group, the hole group comprises a strip-shaped hole 531 and a round hole 532, and the hole center of the strip-shaped hole 531 and the hole center of the round hole 532 are positioned on the same straight line. When prefabricating, the four dry hanging blocks 53 are respectively arranged in the corresponding dry hanging grooves; when the hole group is formed, the opening direction of the strip-shaped holes 531 on the two lower dry hanging blocks 53 is parallel to the longitudinal rib 522, and the opening direction of the strip-shaped holes 531 on the two upper dry hanging blocks 53 is parallel to the transverse rib 523, so that the hanging point position can be adjusted more conveniently during installation.
The concrete adopted in the embodiment is light aggregate concrete or aerated concrete, so that the weight is reduced. In addition, the strength is increased while the thickness of the prefabricated member is reduced by increasing fibers or steel wires at local nodes in the concrete, namely, the requirements for reducing the overall weight and meeting the structural bearing capacity are met by arranging the node reinforcing ribs 54 and the ribbed belt reinforcing ribs 55, so that the purposes of facilitating construction and reducing cost are achieved.
As shown in fig. 9 and 10, the node reinforcing bar 54 is disposed at the intersection of the panel 51, the rib band 52 and the dry hanging block 53, and the node reinforcing bar 54 is an L-shaped reinforcing bar, one section of which is embedded in the dry hanging block 53, and the other section of which is embedded in the side rib 521. As shown in fig. 11, the rib band reinforcing rib 55 includes a pair of through-ribs 551 provided along the longitudinal direction of the rib band 52 and a connecting rib 552 connected between the through-ribs 551. The strength is increased while the thickness of the prefabricated member is reduced by adopting a reinforcement mode, so that the requirements of reducing the self weight and meeting the structural bearing capacity are met, and the purposes of facilitating construction and reducing cost are achieved.
As shown in fig. 12, the dry-hang device 6 includes a keel connector 61 and a wall panel connector 62. As shown in fig. 13 and 14, the keel connecting piece 61 and the wall panel connecting piece 62 have the same structure, are both angle steels, and are provided with a pair of oblong holes on two sides respectively. During installation, the slotted hole of keel connecting piece 61 one side aligns with the punch combination on the secondary keel 32 and then is locked through the fastener, the slotted hole of the other side aligns with the slotted hole on the wallboard connecting piece 62 and then is locked through the fastener, and the other side of the wallboard connecting piece 62 is connected with the prefabricated hanging plate 5 through the bolt passing through the slotted hole. The setting through trombone hole on fossil fragments connecting piece 61 and wallboard connecting piece 62 can improve the simple operation degree when prefabricated link plate 5 installs to also can carry out the fine setting of prefabricated link plate 5 each direction in the installation, thereby need not to dismantle repeatedly, do benefit to and improve the efficiency of construction, guarantee the construction progress. Meanwhile, the arrangement of the adjusting device 4 is matched to further ensure that the splicing seams between the prefabricated hanging plates 5 on the same plane are consistent.
After the invention is put into use, the adaptor 2 is connected with the embedded part 1, then the main keel 31 is connected with the adaptor 2, the secondary keel 32 is connected between the pair of main keels 31, and then the dry hanging device 6 is installed. The keel connecting piece 61 and the wallboard connecting piece 62 are connected in a detachable mode, the dry hanging device 6 and the secondary keel 32 are connected in a detachable mode, the components are convenient to disassemble and assemble, the installation position is convenient to adjust, and construction efficiency is improved. Adjusting device 4 links to each other second connecting piece and fossil fragments subassembly 3 during the assembly, links to each other first connecting piece 41 and prefabricated link plate 5, connects the back, can adjust the interval between two vertical adjacent prefabricated link plates 5 through moving part 422 along the removal of mounting 421. The distance between two adjacent horizontal prefabricated hanging plates 5 can be conveniently adjusted by arranging the long round holes on the second connecting piece. The prefabricated link plate 5 of accurate location is convenient for guarantee that the piece width between each prefabricated link plate 5 is unanimous.
When the prefabricated hanging plates are installed, the prefabricated hanging plates are numbered in sequence, then a dry hanging device and an adjusting device are installed on the back faces of the prefabricated hanging plates, then a test section solid sample plate is installed, and then formal installation is carried out after the test installation is qualified; after the installation, the prefabricated hanging plate is positioned and adjusted, and the width of the plate seam is ensured to be consistent. Can guarantee prefabricated link plate and installation wall phase-match through the try-on, avoid appearing the condition that needs relapse the dismouting, do benefit to and improve the efficiency of construction to can fix a position the adjustment to prefabricated link plate after the installation is accomplished, guarantee that the slab joint width is unanimous, can guarantee the degree of consistency of slab joint on the whole decorative cover, do benefit to follow-up construction, be convenient for improve the efficiency of construction, shorten construction cycle.
The curtain wall constructed by the invention also has the following advantages:
1. for traditional stone material curtain more pleasing to the eye, durable, easy construction, maintenance are convenient, and its panel strength and pattern can be adjusted according to owner or building characteristic, can realize through changing concrete strength, inside arrangement of reinforcement, mould molding, can satisfy the mass production of the same component, also can carry out the customization of opposite sex component.
2. Quality improvement and efficiency enhancement: the prefabricated concrete hanging plate produced by a factory is adopted, only assembly and detail treatment are carried out on the site, the site operation amount is greatly reduced, the quantity of workers required by the construction site is greatly reduced, the working strength of the workers is correspondingly reduced, the workers can conveniently organize the hanging plate, the construction efficiency is improved, the construction period is shortened, and the building quality is improved.
3. Energy conservation and environmental protection: the decoration part is completed in a factory, the workload of a construction link is reduced, the construction period is effectively shortened, the environmental influences such as noise, dust, vibration, construction waste and the like are reduced on a construction site, and the ecological environment of the place where the building is located can be effectively protected.
4. Ensuring the construction period: the construction method has the advantages that the construction method is not limited by time, the winter construction measures are simple and convenient, the effect is easy to guarantee, winter construction is facilitated, the normal and effective construction period can be realized, and the project progress is guaranteed.
The present invention is not limited to the above preferred embodiments, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A construction method of a concrete dry-hanging curtain wall is characterized by comprising the following steps:
s.1, base layer processing;
s.2, measuring and paying off;
s.3, installing an adapter;
s.4, installing a keel component;
s.5, installing a lightning protection system;
s.6, installing an insulating layer;
s.7, rechecking the control line in the S.2;
s.8, mounting the prefabricated hanging plate,
s.8.1, numbering the prefabricated hanging plates in sequence,
s.8.2, installing a dry hanging device and an adjusting device on the back of the prefabricated hanging plate,
s.8.3, carrying out test section entity sample plate installation,
s.8.4, formally installing after the trial assembly is qualified;
s.9, positioning and adjusting the prefabricated hanging plates to ensure that the plate seam widths are consistent;
s.10, plate seam processing;
the prefabricated hanging plate comprises a panel, a rib belt, a dry hanging block, a node reinforcing rib and a rib belt reinforcing rib; the rib belts are arranged on the back of the panel in a grid shape, and divide the back of the panel into a plurality of mutually independent dry hanging grooves; the dry hanging blocks comprise hole groups, each hole group comprises a strip-shaped hole and a round hole, the hole centers of the strip-shaped holes and the round holes are positioned on the same straight line, and each dry hanging block is arranged in the corresponding dry hanging groove; the node reinforcing ribs are arranged at the intersection of the panel, the rib belts and the dry hanging blocks; the rib belt reinforcing ribs comprise through long ribs and connecting ribs, a pair of through long ribs are arranged along the length direction of the rib belt, and the connecting ribs are connected between the two through long ribs;
the rib belt comprises side ribs, longitudinal ribs and transverse ribs, the strip-shaped hole forming directions on the two dry hanging blocks at the lower part are parallel to the longitudinal ribs, and the strip-shaped hole forming directions of the two dry hanging blocks at the upper part are parallel to the transverse ribs.
2. A concrete drywall construction method as set forth in claim 1, wherein said s.2 includes:
s.2.1, horizontal control lines are arranged, wherein the elevation lines are used as main datum lines, transverse datum lines are arranged by taking floors as units, transverse division is performed from top to bottom, and the division size is the dry hanging height of the two prefabricated hanging plates;
s.2.2, longitudinal control lines, wherein a plurality of longitudinal datum lines are uniformly arranged on the outer wall surface, and longitudinal division is carried out according to the division size to form a plane control net;
and S.2.3, rechecking on site.
3. A concrete drywall construction method as set forth in claim 1, wherein said s.3 includes:
s.3.1, marking out the center of the embedded part,
s.3.2, a pair of adapter pieces are welded on the center line of the embedded part in an aligned mode,
and S.3.3, performing anticorrosive and antirust treatment on the welding line.
4. A concrete dry curtain wall construction method as set forth in claim 3, wherein: the keel assembly comprises a main keel and a secondary keel, the main keel is a square steel pipe, and a connecting hole is formed in the main keel; the secondary keel is an angle steel; firstly, mounting a main keel, wherein the main keel is detachably connected with the adapter; and installing a secondary keel again, wherein the secondary keel is arranged between the two main keels, one end of the secondary keel is detachably connected with one main keel, and the other end of the secondary keel is fixedly connected with the other main keel.
5. The concrete dry curtain wall construction method according to claim 4, wherein: the lightning protection system comprises a main lightning protection belt, a down lead and a grounding device, wherein one end of the main lightning protection belt is connected with the main keel, the other end of the main lightning protection belt is connected with the down lead, and the other end of the down lead is connected with the grounding device.
6. A concrete drywall construction method as set forth in claim 1, wherein in s.8.4: firstly, mounting the prefabricated hanging plates at the corners, and then sequentially mounting other prefabricated hanging plates from bottom to top; the single prefabricated hanging plate is installed from bottom to top when being installed.
7. A concrete dry curtain wall construction method as claimed in claim 1, wherein in s.9, the prefabricated hanging plates are adjusted face by face and layer by layer, and during adjustment:
firstly, adjusting horizontal deviation, and adjusting the width of plate seams among all prefabricated hanging plates in the same horizontal direction to be consistent through a dry hanging device and an adjusting device;
and then, adjusting the vertical deviation, and adjusting the verticality of each prefabricated hanging plate in the same vertical direction through an adjusting device to ensure that the width of the vertical plate seam is consistent.
8. A concrete dry curtain wall construction method as claimed in claim 1, wherein in s.10, foamed polyethylene foam rods are filled between the prefabricated hanging panels from top to bottom, and the prefabricated hanging panels are cleaned, covered with protective tape paper, injected with sealant, and then sealed in a waterproof manner.
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| CN115839143A (en) * | 2022-12-19 | 2023-03-24 | 中建一局集团建设发展有限公司 | Unit type concrete large-plate curtain wall installation system and construction method thereof |
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| CN106149935A (en) * | 2016-08-23 | 2016-11-23 | 中建八局第二建设有限公司 | Open cladding hollow ceramic plate curtain wall construction method |
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