CN115162737A - Concrete pouring method for external wall of built-in heat-preservation integrated system - Google Patents
Concrete pouring method for external wall of built-in heat-preservation integrated system Download PDFInfo
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- CN115162737A CN115162737A CN202210690517.2A CN202210690517A CN115162737A CN 115162737 A CN115162737 A CN 115162737A CN 202210690517 A CN202210690517 A CN 202210690517A CN 115162737 A CN115162737 A CN 115162737A
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- 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
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- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/7608—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising a prefabricated insulating layer, disposed between two other layers or panels
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- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
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- 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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- 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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- 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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- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
Abstract
The invention discloses a concrete pouring method for an external wall of a built-in heat-preservation integrated system, which comprises the following steps: when the outer wall template is installed, a supporting mold frame of the floor panel is synchronously erected and used as an operating platform for outer wall pouring and an installation platform of concrete pouring equipment; the concrete spreader and the small concrete delivery pump are respectively fixedly arranged on the support formwork; the bearing wall structure layer and the protective layer are synchronously discharged by two sets of pouring equipment respectively, and the bearing wall structure layer is conveyed and poured by a vehicle-mounted pump and a concrete spreader by using common concrete; the protective layer adopts self-compacting concrete, and is vertically transported by a tower crane, distributed by a small concrete delivery pump, and poured by a distribution hopper and a flat pump pipe which are arranged on an outer wall template. The concrete pouring method for the external wall of the built-in heat-insulation integrated system can save mechanical and labor cost to the maximum extent, compress process time, reduce material loss and ensure the integrated construction quality of the heat-insulation layer and the external wall structure.
Description
Technical Field
The invention relates to the technical field of civil building external wall heat insulation, in particular to a concrete pouring method for an external wall of a built-in heat insulation integrated system.
Background
Building energy conservation is an important component of national energy conservation, and the most direct method for reducing the building energy consumption is to adopt an outer wall enclosure structure heat preservation and energy conservation technology, reduce the heat (cold) load required by building heating and air conditioning and improve the energy utilization efficiency. In the prior art, the following 5 common construction methods for the heat preservation of the external wall of the building are adopted:
(1) The thin-plastered external wall heat-insulating system is an external wall heat-insulating system which uses a flame-retardant extruded polystyrene board or a rock wool board as a heat-insulating layer, is fixed on a base wall body in a bonding auxiliary anchor bolt mode or a mechanical fixing piece, uses anti-crack mortar composite glass fiber mesh cloth as a protective layer, and uses paint, facing bricks and the like for wall decoration.
The application of the external wall heat insulation mode is the most extensive once, but in recent years, accidents such as fire disasters and falling-off occur in the external wall heat insulation layer of some places, so that great potential safety hazards exist, and some related departments in provinces and cities continuously produce documents, so that the adoption of a thin-plastered external wall heat insulation system and an external wall heat insulation and decoration integrated system fixed only in a bonding anchoring mode is forbidden, and the current external wall heat insulation method is gradually eliminated by the construction industry.
(2) A composite external wall thermal insulation system is characterized in that the adhesive polystyrene particle thermal insulation slurry is used as a thermal insulation layer and is arranged on a base wall surface in a field plastering mode, and an anti-crack mortar composite glass fiber mesh fabric is used as a protective layer and a coating or a facing brick veneer.
The glue powder polyphenyl granule heat preservation system is constructed by coating on site, the construction requirement is higher, the thickness is not easy to control, and the heat transfer coefficient can not meet the design requirement easily; if the interface mortar is not coated sufficiently or the single-layer coating is too thick, the adhesive force between the interface mortar and the base layer is poor, and hollowing is easy to occur; the combustion performance of the civil building exterior wall heat-insulating material should adopt A grade, while the polyphenyl granules belong to B grade materials, and the fireproof performance is poor. At present, the heat insulation method of the rubber powder polyphenyl particle external wall is gradually reduced, and the rubber powder polyphenyl particle external wall heat insulation method is only applied to the heat insulation structure of a small-range special-shaped wall surface.
(3) Light gauge steel inlays fills out external wall insulation system to rock wool board or glass wool board are thermal-insulated layer, inlays to fill in the cavity of light gauge steel frame (rock wool nail is fixed for the heated board), and light gauge steel frame is fixed in basic unit's wall body with the crab-bolt, covers the external wall insulation system of curtain panel veneer outward.
The heat preservation process of the rock wool board embedded in the light steel keel cannot be applied to other external wall decoration methods due to the condition of the external wall decoration surface layer; the rock wool insulation board has strong hydrophobicity, water is accumulated in the insulation board, the weight of the insulation layer can be increased for a long time, and phenomena of cavity formation, pulverization, falling off and the like are easy to occur, so that the due insulation effect cannot be achieved.
(4) An integrated heat insulation system of a composite heat insulation board and an outer wall structure takes the composite heat insulation board as a heat insulation layer, is arranged on the outer side of a concrete wall body and is formed by primary pouring (auxiliary anchor bolt pulling), and takes anti-crack mortar composite glass fiber mesh cloth as a protective layer and a coating veneer, belonging to an external composite heat insulation system of an outer wall.
(5) The steel wire mesh combined heat insulation board built-in type external wall heat insulation integrated system comprises a protective layer with a stainless steel welded mesh sheet, a sandwich board heat insulation layer is arranged between the protective layer and a wall structure layer, concrete (anchor bar is used for bonding) is poured on the structure layer and the protective layer on two sides of the heat insulation layer respectively to form the heat insulation and external wall structure integrated external wall heat insulation system, and the external wall heat insulation integrated system belongs to the external wall built-in type integrated heat insulation system.
Compared with other various heat preservation modes, the built-in heat preservation integrated system has the technical advantages of low comprehensive cost, same service life as a building, no shedding, no hidden danger of flammability and the like, is suitable for the high-quality development trend of the building industry due to the characteristics of safety, applicability, advanced technology, economy, reasonability and the like, and is more and more widely applied to the field of engineering construction.
In the built-in heat preservation integrated system, the outer concrete protective layer adopts self-compacting concrete, and the bearing wall structure layer adopts common concrete; the thickness of the protective layer is 50mm, a low-carbon galvanized steel wire mesh is arranged in the protective layer, the diameter of the steel wire is not less than 3mm, and the meshes are not less than 50mm and 50mm; the number of the connecting pieces is not less than 8 per square meter, and the reinforcing steel bars or steel materials penetrating through the position of the heat insulation plate are coated by engineering plastics in a hot melting mode.
In the cast-in-place outer wall concrete construction, because the steel wire meshes on the outer side are dense, the concrete section is only 50mm, and common concrete can not be adopted for pouring and can not be subjected to insertion type vibration. Therefore, the outer protective layer is made of self-compacting high-performance concrete with designed strength grade, the bearing wall structure layer is made of common concrete, two different types of concrete are poured simultaneously, concrete transportation equipment and a large amount of labor input are increased exponentially, the construction period is prolonged, and the engineering cost is increased; meanwhile, a protective layer with the thickness of 50mm on the outer side of the outer wall is too narrow, the operation of concrete entering a mold is restricted by a working surface, the concrete is easily wasted due to a large amount of scattering, the pouring time is prolonged, the heat insulation layer is easy to displace and occupy the outer protective layer, the quality hidden trouble of outer wall concrete hollowing is caused, and the quality defects of cold seams, exposed ribs, honeycombs and the like are easily generated on the protective layer concrete; in order to treat the quality defect of the outer wall, the outer vertical surface must be thickened with an anti-cracking mortar leveling layer, so that the construction quality is difficult to ensure, and the engineering quantity and the overall cost of the outer wall are increased.
Therefore, it is necessary to develop an external wall concrete pouring method for the built-in heat insulation system, and fully exert the technical advantages of the built-in heat insulation integrated system on the basis of meeting the requirements of construction specifications.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a concrete pouring method for an external wall of a built-in heat-preservation integrated system, which can overcome the defects in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a concrete pouring method for an external wall of a built-in heat-insulation integrated system comprises the following steps:
manufacturing a distribution hopper and a flat mouth pump pipe, assembling and welding steel plates to obtain the distribution hopper with a rectangular opening, welding angle steel on both sides of the long side of the distribution hopper, and respectively welding two ends of the angle steel with two branches in a step-by-step manner to form a distribution hopper fixing device; one end of the flat-mouth pump pipe is connected with the delivery pump pipe by adopting an elbow, the other end of the flat-mouth pump pipe gradually reduces the caliber, and the tail end of the flat-mouth pump pipe is in a flat-mouth shape;
binding external wall steel bars and installing a built-in insulation board, temporarily fixing the built-in insulation board after the built-in insulation board is installed in place, and arranging a concrete cantilever board on a lower floor as a support for installing the insulation board; drilling holes in the positions, corresponding to the pull bolts of the template, of the built-in insulation boards and penetrating the bolts; a steel bar connecting piece of the built-in heat insulation system penetrates into a positioning chuck on the built-in heat insulation plate, so that the section size of the template is ensured, and the position of the built-in heat insulation plate is limited;
installing an external wall template, placing a distribution hopper on the upper part of the external wall template, adjusting the position of the distribution hopper to ensure that a discharge port of the distribution hopper is opposite to a protective layer, placing angle steel welded on the outer side of the distribution hopper on a square wooden keel of a side mold, and tightly clamping cross arms at two ends of the distribution hopper on the square wooden keel in a step-by-step manner to clamp and fix the distribution hopper;
installing a construction platform and pouring equipment, and synchronously erecting a support formwork of a floor slab as an operation platform for outer wall pouring and an installation platform of concrete pouring equipment when the outer wall formwork is installed; the concrete spreader and the small concrete delivery pump are respectively fixedly arranged on the support formwork;
the method comprises the following steps that concrete of an outer wall is poured, a bearing wall structure layer and a protective layer are synchronously discharged by two sets of pouring equipment respectively, the bearing wall structure layer is made of common concrete and is transported and poured by a vehicle-mounted pump and a concrete spreader; the protective layer is made of self-compacting concrete, and is vertically transported by a tower crane and distributed by a small concrete delivery pump, and pouring is completed through a distribution hopper and a flat pump pipe which are arranged on an outer wall template.
Furthermore, the length of the cloth bucket is 800mm, the width of an upper opening is 200mm, the width of a lower opening is 35mm, the height of the lower opening is 120mm, and the steel plate welding process is double-sided continuous welding.
Further, the length of the cross section of the tail end of the flat-mouth pump pipe is 100mm, and the width of the cross section of the tail end of the flat-mouth pump pipe is 50mm.
Further, the concrete cantilever plate extends to 4/5 of the thickness of the protective layer.
Further, before the built-in insulation board leaves a factory, a typesetting division scheme is determined according to the design size of a drawing, an installation layout picture is drawn, the height of the built-in insulation board is the height of a floor minus the thickness of the floor, the number of the built-in insulation board is classified according to the installation layout picture before the insulation board leaves the factory, and specific use parts are determined.
Furthermore, at the positive and negative corners of the built-in insulation board, the steel wire meshes are connected with the external wall steel bars by binding wires, and the steel wire meshes at the joints of the built-in insulation board are bound and connected in the same way.
Furthermore, the number of the steel bar connecting pieces is not less than 8 per square meter, and the steel bar connecting pieces penetrating through the built-in heat insulation plate are coated by engineering plastics in a hot melting mode.
Further, the pouring surface of the protective layer is higher than the structural layer of the bearing wall.
Furthermore, a screen is arranged at a feed inlet of the small concrete conveying pump to filter the super-particle-size stones.
Further, the self-compacting concrete assists in vibrating by knocking against the outer formwork.
The invention has the beneficial effects that:
(1) According to the concrete pouring method for the external wall of the built-in heat-insulation integrated system, the bearing wall structure layer and the heat-insulation protective layer are synchronously poured by adopting two sets of pouring equipment, so that the limitation of synchronous pouring of two kinds of concrete is overcome, the mechanical and labor cost is saved to the greatest extent, and the integrity of the heat-insulation integrated structure of the composite external wall is ensured;
(2) The 50mm thick protective layer of outer wall utilizes the cloth bucket of the special system and flat mouth pump line to finish pouring, has solved the difficult drawback of blanking of the narrow and small section concrete, and shorten the construction cycle rationally, lighten worker's labour intensity, reduce the material loss, realize the cost saving;
(3) The outer wall protective layer adopts self-compacting concrete, does not need mechanical vibration to achieve the compaction of a concrete structure, is synchronously poured with a bearing wall structure, adopts various measures to control the positioning of the heat preservation layer, prevents the heat preservation layer from moving outwards and occupying the protective layer, effectively avoids the quality defects of outer wall concrete hollowing, cold seams, exposed ribs, honeycombs and the like, further improves the outer wall outer heat preservation engineering quality, and lays good conditions for the subsequent outer facade decoration construction;
(4) The invention has the characteristics of safety, applicability, advanced technology, economy, reasonability and the like, can be widely applied to the field of engineering construction, promotes the fine and specialized development of the civil building exterior wall heat insulation engineering, meets the requirements of high-quality development and standardized construction of the building industry, and plays a positive role in promoting the technical progress of a built-in heat insulation integrated system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a top view of a distribution hopper according to an embodiment of the invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic view of a distribution hopper fixing device according to an embodiment of the invention;
FIG. 4 is a schematic view of a flat pump tube according to an embodiment of the present invention;
FIG. 5 is a schematic view of an external wall structure of the built-in insulation system according to the embodiment of the invention;
FIG. 6 is an installation diagram of a construction platform and a pouring device according to an embodiment of the invention;
FIG. 7 is a schematic diagram of an external wall concrete pouring method of the built-in heat-preservation integrated system according to the embodiment of the invention;
in the figure: 1. concrete spreader, 2, small concrete delivery pump, 3, support die carrier, 4, floor board, 5, lower-layer poured outer wall, 6, built-in insulation board, 7, self-compacting concrete, 8, outer wall template, 9, square wood keel, 10, spreader hopper, 11, step tightening, 12, flat mouth pump pipe, 13, elbow, 14, delivery pump pipe, 15, split bolt, 16, inner support, 17, outer wall longitudinal bar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
As shown in figures 1-7, the concrete pouring method for the external wall of the built-in heat-preservation integrated system according to the embodiment of the invention comprises the following steps:
manufacturing a distributing hopper and a flat mouth pump pipe, assembling and welding steel plates to obtain the distributing hopper 10 with a rectangular opening, welding angle steel on both sides of a long edge of the distributing hopper 10, and respectively welding two ends of the angle steel with two step tightening devices 11 to serve as a fixing device of the distributing hopper; one end of a flat mouth pump pipe 12 is connected with a delivery pump pipe 14 by adopting an elbow 13, the caliber of the other end is gradually reduced, and the tail end is in a flat mouth shape;
binding external wall steel bars and installing the built-in insulation board 6, temporarily fixing the built-in insulation board 6 after the built-in insulation board 6 is installed in place, and arranging a concrete cantilever plate on a lower floor as a support for installing the insulation board; the built-in insulation board 6 is drilled and penetrated with a bolt at the position corresponding to the template split bolt 15; a steel bar connecting piece of the built-in heat insulation system penetrates into a positioning chuck on the built-in heat insulation plate 6, the size of the section of the template is ensured, and the position of the built-in heat insulation plate 6 is limited;
installing an external wall template 8, placing a distribution hopper 10 on the upper part of the external wall template 8, adjusting the position of the distribution hopper 10 to ensure that a discharge port of the distribution hopper is opposite to a protective layer, placing angle steel welded on the outer side of the distribution hopper 10 on a square timber keel 9 of a side mold, and clamping and tightly clamping step-by-step tightening 11 cross arms at two ends of the distribution hopper 10 on the square timber keel 9 to finish the fixation of the distribution hopper 10;
installing a construction platform and pouring equipment, and synchronously erecting a support formwork 3 of a floor panel 4 as an operation platform for outer wall pouring and an installation platform of concrete pouring equipment when an outer wall formwork 8 is installed; the concrete spreader 1 and the small concrete delivery pump 2 are respectively fixedly arranged on the support die carrier 3;
the concrete of the outer wall is poured, the bearing wall structure layer and the protective layer are respectively blanked synchronously by two sets of pouring equipment, the bearing wall structure layer adopts common concrete and is transported and poured by a vehicle-mounted pump and a concrete spreader 1; the protective layer is made of self-compacting concrete 7, and the pouring is completed through vertical transportation of a tower crane, distribution of a small concrete delivery pump 2, and a distribution hopper 10 and a flat pump pipe 12 which are arranged on an outer wall template 8.
Wherein, the length of cloth fill is 800mm, and the upper mouth width is 200mm, and the end opening width is 35mm, highly is 120mm, and steel sheet welding process is two-sided continuous welding. The length of the cross section of the tail end of the flat-mouth pump pipe is 100mm, and the width of the cross section of the tail end of the flat-mouth pump pipe is 50mm. The concrete cantilever plate extends to 4/5 of the thickness of the protective layer.
Before the built-in insulation board leaves a factory, a typesetting division scheme is determined according to the design size of a drawing, an installation layout picture is drawn, the height of the built-in insulation board is the height of a floor minus the thickness of the floor, the number of the built-in insulation board is classified according to the installation layout picture before the insulation board leaves the factory, and specific use parts are determined.
The steel wire meshes at the male and female corners of the built-in insulation board are connected with the external wall steel bars by binding wires, and the steel wire meshes at the joints of the built-in insulation board are bound and connected in the same way. The number of the steel bar connecting pieces is not less than 8 per square meter, and the steel bar connecting pieces penetrating through the built-in heat insulation plate are coated by engineering plastics in a hot melting mode.
The pouring surface of the protective layer is higher than the bearing wall structure layer. A feed inlet of the small concrete conveying pump is provided with a screen for filtering super-particle-size stones. Self-compacting concrete is vibrated by knocking the outer side template.
Example 1
Manufacturing a distributing hopper and a flat mouth pump pipe, wherein the distributing hopper 10 is formed by welding a thin steel plate, assisting an angle steel keel and combining step by step 11; the distributing hopper 10 is assembled and welded by adopting a 1mm thick steel plate, has a funnel-shaped section, is 800mm long, has an upper opening with the width of 200mm, a lower opening with the width of 35mm and the height of 120mm, and ensures that a welding opening is full and firm because the steel plate welding process is double-sided continuous welding. 2 intercept 50 by 5mm angle steel, angle steel length 800mm, the welding is in the both sides on the long limit of cloth fill 10, and the angle steel is with the end parallel and level on the long limit of cloth fill 10. Preparing 2 steps of tightening 11, and respectively welding the tightening 11 with angle steel at two ends of the distributing hopper 10 to be used as a fixing device of the distributing hopper. The concrete of the protective layer with the thickness of 50mm on the outer wall is fed by a special flat pump pipe, one end of the flat pump pipe 12 is connected with a delivery pump pipe 14 by an elbow 13, the other end of the flat pump pipe is gradually reduced in diameter, the tail end of the flat pump pipe is in a flat shape, and the cross section size of the flat pump pipe is 100 x 50mm.
Binding external wall reinforcing steel bars (including external wall longitudinal bars 17), cleaning up base sundries above a lower-layer poured external wall 5, releasing detailed dimensions such as floor axes, wall side lines, control lines, door and window opening position lines and the like according to a design drawing, and copying +500mm horizontal elevation control points on wall and column vertical reinforcing steel bars; correcting the position of the lower-layer connecting longitudinal bar, binding hidden column reinforcing bars, mounting vertical and horizontal ladder bars, and binding wall distribution reinforcing bars; the first horizontal rib is 50mm away from the bottom plate, and then the horizontal ribs are installed according to the grading spacing of the vertical ladder ribs; all the steel bar cross points are bound point by splayed buckles formed by 20# binding wires; binding beam connecting reinforcing steel bars, wherein the length of the beam longitudinal reinforcing steel bars anchored into the hidden columns on the two sides of the hole opening is required to meet the design anchoring requirement; adopt two F card reinforcing bars control displacement between the double reinforcing bar of wall body, the skeleton interval of fixed double reinforcing bar distributes and arranges in the upper, middle and lower of wall body, and the horizontal muscle outside sets up the protective layer cushion of reinforcing bar, is plum blossom form and arranges, interval 600mm.
And (3) numbering and matching the boards, wherein a typesetting and dividing scheme is determined according to the design size of a drawing before the built-in insulation board 6 is delivered from a factory, and an installation layout is drawn. In order to reduce the construction difficulty and material loss and reduce the cracking of the abutted seams, the main specification and size should be used as much as possible. The height dimension of the heat insulation board is that the thickness of the floor is subtracted from the height of the floor, vertical splicing is avoided, cutting on a construction site is strictly forbidden, numbering and classification are carried out before the heat insulation board leaves a factory according to a typesetting diagram, and specific use positions are determined. The heat-insulating plate should be lightly taken and lightly put during transportation, is strictly forbidden to be thrown and trampled during loading and unloading, the storage site of the heat-insulating plate should be leveled and tamped or hardened, drainage, rainproof and anti-exposure measures are made, the heat-insulating plate is stored in a flat mode and stacked in a classified mode, the heat-insulating plate is not suitable for being stored in the open air, and the storage site is arranged within the working range of hoisting equipment.
The built-in insulation boards are assembled, the built-in insulation boards 6 are installed after the external wall steel bars are bound and positioned, the insulation boards are vertically transported and hoisted by adopting a tower crane, protective measures are taken around the boards by using templates or battens, and hoisted ropes are firmly fixed to prevent falling in the air; when the wind power exceeds 5 grades, the hoisting cannot be carried out; the insulation boards are sequentially installed according to a design and typesetting scheme, the male corner and the female corner are installed firstly, then the installation is performed from one side to the other side in sequence, the insulation boards are installed in place in a manual matching mode and then are temporarily fixed, and the concrete cantilever plates are arranged on the lower floor and extend to 4/5 of the thickness of the protective layer to serve as supports for installation of the insulation boards; the position of the insulation board corresponding to the template split bolt 15 is drilled and the bolt is penetrated, the tight joint of the positive and negative corners of the insulation board is ensured, the steel wire mesh is connected with the external wall steel bar by binding wires to enhance the stability, and the steel wire mesh at the joint of the insulation board is also bound and connected; after the insulation board is installed, a steel bar protection layer cushion block is installed on the steel wire mesh sheet and arranged in a plum blossom shape, and the distance between the cushion blocks is 600mm.
And (3) installing connecting pieces, wherein phi 8 steel bar connecting pieces (namely the inner support 16) of the built-in heat insulation system penetrate into a positioning chuck on the heat insulation board, the section size of the template is ensured, the position of the heat insulation board is limited, the number of the connecting pieces is not less than 8 per square meter, and the steel bar connecting pieces penetrating through the heat insulation board are coated by engineering plastics in a hot melting manner.
Installing an outer wall template 8, erecting an inner side template of the outer wall, adjusting the root position of the template according to a template control line, accurately positioning the end part corresponding to the end template position line and temporarily supporting the end template by using a steel pipe; then, an outer side mold is erected, holes are drilled in the positions of the formwork split screws, PVC sleeves are arranged and the split screws penetrate, double-steel-pipe main keels are installed from bottom to top, the split screws are arranged between the main keels, a mountain-shaped clamp and a fastening nut are sleeved in the split screws, and the wall formwork is locked and fixed. The template should be assembled tightly, leaks thick liquid when the template bottom foreshadowing mortar prevents concrete placement, and the wall bolt hole in the template uses special pistol to bore by indoor side outside, and the cleaning gap is set aside to the template bottom, and the heated board piece clean up and the shutoff cleaning gap in with the mould after the template is fixed. The self-compacting concrete distributing hopper is arranged on the upper portion of the external wall template 8, the position of the distributing hopper 10 is adjusted to enable a discharge port of the distributing hopper to be aligned with a 50mm thick protective layer, angle steel welded on the outer side of the distributing hopper 10 is placed on a square wooden keel 9 of a side die, step-by-step fasteners 11 at two ends of the distributing hopper 10 are crossarms on the square wooden keel 9 and clamped tightly, and fixing of the distributing hopper 10 is completed.
Installing a construction platform and pouring equipment, and synchronously erecting a support die carrier 3 of a floor plate 4 when an outer wall template 8 is installed to serve as an operating platform for outer wall pouring and an installation platform of concrete pouring equipment; the bearing wall is poured by using a concrete spreader 1, a protective layer with the thickness of 50mm is poured by using a small concrete delivery pump 2 through tower crane transportation, and the concrete spreader 1 and the small concrete delivery pump 2 are respectively installed and fixed on a support die carrier 3.
The concrete of the outer wall is poured, and the structural layer of the bearing wall adopts common concrete and is transported and poured by a vehicle-mounted pump and a concrete spreader; a protective layer with the thickness of 50mm on the outer side of the outer wall is made of self-compacting concrete 7, and pouring is completed through vertical transportation of a tower crane, distribution of a small concrete delivery pump and a special distribution hopper and a flat-mouth pump pipe which are installed on an outer wall formwork 8. The self-compacting concrete should achieve the following working properties: slump: 240-260 mm, spreading degree: 600-750 mm, good workability, and no visual bleeding or segregation phenomenon. The outer wall bearing wall body and the heat preservation protective layer are synchronously blanked by two sets of pouring equipment respectively, and the pouring surface of the protective layer is about 400mm higher than the structural layer of the bearing wall, so that the heat preservation plate is prevented from being extruded and displaced; a feed inlet of the small-sized delivery pump is provided with a screen for filtering super-particle-size stones, and the pouring thickness of each layer of wall concrete is controlled to be about 400 mm. The self-compacting concrete does not need to be vibrated by an inserted vibrator, but needs to be vibrated by being knocked by an outer side die manually, so that the self-compacting concrete is favorably filled in the inner space of the protective layer; when bearing wall body concrete vibrates, the direct heated board that touches of the stick of prohibiting vibrating to cause the heated board to damage.
The parameters of the small concrete delivery pump are shown in table 1.
TABLE 1 Small concrete delivery pump parameter table
| Item | Parameter(s) |
| Overall dimension | 2100*1100*700mm |
| Concrete delivery | ≤5～8m 3 |
| Motor power | 15KW |
| Weight of the complete machine | 480Kg |
| Vertical pumping distance | ≤30m |
| Horizontal pumping distance | ≤100m |
In conclusion, by means of the technical scheme, the built-in heat-insulation boards are installed after the external wall steel bars are bound and positioned, the external wall wood formwork is erected and reinforced by a conventional method, the size of the cross section of the formwork is ensured by the aid of the internal supports of the built-in heat-insulation system, and the positions of the heat-insulation boards are limited; the supporting die carrier of the floor is used as a mounting platform of a distributing rod and a small concrete delivery pump, and the bearing wall structural layer adopts common concrete and is transported and cast by a vehicle-mounted pump and a concrete distributing machine; the outer 50mm thick protective layer of the outer wall is made of self-compacting concrete, vertically transported by a tower crane, distributed by a small concrete delivery pump, and poured by a special distribution hopper and a flat pump pipe arranged on an outer wall template; the concrete spreader and the synchronous unloading of small-size concrete feeding pump, the inoxidizing coating face of pouring is higher than about 400mm of bearing wall structural layer, prevents that the heated board from being extruded the displacement, but furthest saves machinery and cost of labor, compression process time, reduces the material loss, ensures heat preservation and outer wall structure integration construction quality.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The method for pouring the concrete on the external wall of the built-in heat-insulation integrated system is characterized by comprising the following steps of:
manufacturing a distribution hopper and a flat mouth pump pipe, assembling and welding steel plates to obtain the distribution hopper with a rectangular opening, welding angle steels on two sides of the long side of the distribution hopper, and respectively welding two ends of the angle steels with two legs in a step-by-step manner to form a distribution hopper fixing device; one end of the flat-mouth pump pipe is connected with the delivery pump pipe by adopting an elbow, the other end of the flat-mouth pump pipe gradually reduces the caliber, and the tail end of the flat-mouth pump pipe is in a flat-mouth shape;
binding external wall steel bars and installing a built-in insulation board, temporarily fixing the built-in insulation board after the built-in insulation board is installed in place, and arranging a concrete cantilever board on a lower floor as a support for installing the insulation board; the built-in insulation board is drilled and penetrated with bolts at the positions corresponding to the pull bolts of the template; a steel bar connecting piece of the built-in heat insulation system penetrates into a positioning chuck on the built-in heat insulation plate, so that the section size of the template is ensured, and the position of the built-in heat insulation plate is limited;
installing an external wall template, placing a cloth bucket on the upper part of the external wall template, adjusting the position of the cloth bucket to ensure that a discharge port of the cloth bucket is opposite to a protective layer, placing angle steel welded on the outer side of the cloth bucket on a square wooden keel of a side mold, and tightly clamping cross arms at two ends of the cloth bucket on the square wooden keel in a stepping manner to clamp tightly so as to finish the fixation of the cloth bucket;
installing a construction platform and pouring equipment, and synchronously erecting a support formwork of a floor slab as an operation platform for outer wall pouring and an installation platform of concrete pouring equipment when the outer wall formwork is installed; the concrete spreader and the small concrete delivery pump are respectively fixedly arranged on the support formwork;
the method comprises the following steps that outer wall concrete is poured, two sets of pouring equipment are respectively adopted for synchronously blanking a bearing wall structure layer and a protective layer, and the bearing wall structure layer is made of common concrete and is transported and poured by a vehicle-mounted pump and a concrete spreader; the protective layer adopts self-compacting concrete, and is vertically transported by a tower crane, distributed by a small concrete delivery pump, and poured by a distribution hopper and a flat pump pipe which are arranged on an outer wall template.
2. The concrete pouring method for the external wall of the built-in heat-insulation integrated system according to claim 1, wherein the length of the distributing hopper is 800mm, the width of an upper opening is 200mm, the width of a lower opening is 35mm, the height is 120mm, and the steel plate welding process is double-sided continuous welding.
3. The concrete pouring method for the external wall of the built-in heat-insulation integrated system according to claim 1, wherein the length of the cross section of the tail end of the flat-mouth pump pipe is 100mm, and the width of the cross section of the tail end of the flat-mouth pump pipe is 50mm.
4. The concrete pouring method for the external wall of the built-in heat-preservation integrated system according to claim 1, wherein the concrete cantilever slab extends to 4/5 of the thickness of the protective layer.
5. The method for pouring the concrete on the external wall of the built-in heat-insulation integrated system according to claim 1, wherein before the built-in heat-insulation board leaves a factory, a typesetting and dividing scheme is determined according to the design size of a drawing, an installation layout is drawn, the height of the built-in heat-insulation board is the height of a floor minus the thickness of the floor, and the built-in heat-insulation board is classified by numbering according to the installation layout before the heat-insulation board leaves the factory, so that specific use positions are determined.
6. The concrete pouring method for the outer wall of the built-in heat insulation integrated system according to claim 1, wherein steel wire meshes at the internal and external corners of the built-in heat insulation plate are connected with outer wall steel bars by binding wires, and the steel wire meshes at the abutted seams of the built-in heat insulation plate are bound and connected in the same way.
7. The concrete pouring method for the external wall of the built-in heat-insulation integrated system according to claim 1, wherein the number of the reinforcing steel bar connecting pieces per square meter is not less than 8, and the reinforcing steel bar connecting pieces penetrating through the position of the built-in heat-insulation plate are coated by engineering plastics in a hot melting mode.
8. The method for pouring the concrete on the external wall of the built-in heat-insulation integrated system according to claim 1, wherein the pouring surface of the protective layer is higher than the structural layer of the bearing wall.
9. The concrete pouring method for the external wall of the built-in heat-insulation integrated system according to claim 1, wherein a screen is arranged at a feed inlet of the small concrete delivery pump to filter the super-grain-size stones.
10. The concrete pouring method for the external wall of the built-in heat-insulation integrated system according to claim 1, wherein the self-compacting concrete is vibrated by knocking an external template.
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