Integrated construction method of building outer wall built-in composite thermal insulation system

Abstract

The application discloses a kind of integrated construction methods of building outer wall built-in composite thermal insulation system, comprising: composite thermal insulation system production;Composite thermal insulation system is decomposed, numbered, sample, and composite thermal insulation unit is produced according to numbered classification;When producing composite thermal insulation unit, composite thermal insulation board and steel mesh are connected using connecting structure, so that steel mesh and composite thermal insulation board maintain preset interval;Base wall steel bar binding;Composite thermal insulation system installation;Formwork setting;Pouring concrete simultaneously on both sides of composite thermal insulation system;Demolition and concrete curing step;The construction method of the application can reduce the installation difficulty of composite thermal insulation system and improve installation efficiency by connecting steel mesh and composite thermal insulation board into an integral structure when producing thermal insulation unit;And when pouring concrete, it can effectively prevent composite thermal insulation system from slipping, ensure the integrity and stability of the connection between protective layer, thermal insulation layer and structure layer, and improve the thermal insulation and protection effect of building outer wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, and in particular to an integrated construction method of a building outer wall built-in composite thermal insulation system. BACKGROUND

[0002] With the continuous expansion of the scale of housing construction, the outer wall thermal insulation technology has become an important issue in today's housing construction. Through nationwide large-scale practice research and promotion of the thermal insulation outer formwork cast-in-place concrete structure, it is proved that this technology has the advantages of same service life as building, safety and reliability, convenient construction, etc., which is a major change to building thermal insulation design and construction method. In cold regions, building outer wall thermal insulation has higher requirements, and through building outer wall thermal insulation, the emission of indoor heat can be effectively prevented, which plays an important role in creating a suitable indoor thermal environment and saving energy. However, in the actual construction process, the existing thermal insulation wall structure still has problems.

[0003] The Chinese patent with publication number CN205046699U discloses an outer wall thermal insulation integrated structure, which fixes the integrated outer formwork for thermal insulation to the shear wall through rivets to achieve the effect of outer wall thermal insulation. In this scheme, even if the thermal insulation outer formwork is fixed to the shear wall, the shear wall and the thermal insulation outer formwork are still in a split state, and the thermal insulation board is exposed on the outer facade of the shear wall, which has certain safety hazards.

[0004] In the construction process of the thermal insulation wall, there is also a construction method of using a connecting piece to fix the thermal insulation board and the formwork, so that the thermal insulation board is embedded into the wall. When this method is used for construction, the thermal insulation board will slip during the concrete pouring process, affecting the construction quality of the thermal insulation wall. SUMMARY

[0005] One of the purposes of the present application is at least to provide an integrated construction method of a building outer wall built-in composite thermal insulation system, which connects the composite thermal insulation board and the steel mesh into a composite thermal insulation system through a connecting structure, can effectively prevent the composite thermal insulation board and the steel mesh from slipping during the concrete construction process, so as to effectively connect the protective layer and the structural layer, and improve the thermal insulation and protection effect of the building outer wall.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application includes the following aspects.

[0007] An integrated construction method of a building outer wall built-in composite thermal insulation system, comprising the following steps:

[0008] Step one, composite thermal insulation system production; the composite thermal insulation system in the building outer wall is decomposed, numbered, sampled, and then the composite thermal insulation unit is produced according to the number classification; when the composite thermal insulation unit is produced, the composite thermal insulation board and the steel mesh are connected by using the connecting structure, so that the steel mesh and the composite thermal insulation board maintain a preset interval;

[0009] Step two, base wall steel bar binding; the base wall steel bar is bound at the position of the vertical lap steel bar on the floor slab;

[0010] Step three, composite thermal insulation system installation; the composite thermal insulation unit is sequentially installed by using the vertical hoisting mode of the tower crane and manual work according to the number of the composite thermal insulation unit;

[0011] Step four, formwork setting; the first formwork is set on the side of the composite thermal insulation system close to the steel mesh, and the second formwork is set on the side away from the steel mesh;

[0012] Step five, concrete pouring; the concrete is poured on both sides of the composite thermal insulation system;

[0013] Step six, formwork removal and concrete curing.

[0014] Preferably, the connecting structure comprises an anchor disc, a chuck and an L-shaped steel bar; wherein the side surface center of the anchor disc is coaxially provided with a wedge-shaped block, and the wedge-shaped block is integrally arranged with the anchor disc; longitudinal and transverse intersecting grooves are formed on the anchor disc, the grooves extend from the anchor disc into the wedge-shaped block, an axial connecting hole is arranged on the wedge-shaped block and communicates with the anchor disc and the chuck, and the connecting hole is eccentrically arranged.

[0015] Preferably, the connecting process of the composite thermal insulation board and the steel mesh comprises:

[0016] An installation hole penetrating through the composite thermal insulation board is formed at a preset position of the composite thermal insulation board;

[0017] The anchor disc is sleeved on the steel mesh through the grooves on the anchor disc, so that the steel mesh is clamped into the wedge-shaped block of the anchor disc, and the steel mesh is located at the groove bottom of the wedge-shaped block;

[0018] The anchor disc or the steel mesh is moved, the anchor disc is attached to one side surface of the composite thermal insulation board, the L-shaped steel bar is inserted, the long side of the L-shaped steel bar passes through the connecting hole on the anchor disc and the installation hole on the composite thermal insulation board at the same time, and the short side of the L-shaped steel bar is clamped on the wedge-shaped block;

[0019] On the side of the composite thermal insulation board away from the steel mesh, the chuck passes through the L-shaped steel bar, and the steel mesh and the composite thermal insulation board are fixed together.

[0020] Preferably, a limiting sleeve is provided on the anchor plate, the limiting sleeve is coaxially disposed at the connection hole of the anchor plate, and the limiting sleeve is disposed opposite to the wedge block; when the anchor plate is attached to one side of the insulation board, the limiting sleeve is inserted into the insulation board so that the anchor plate is stably attached to the side of the insulation board.

[0021] Preferably, after the composite insulation board is connected to the steel mesh, a limiting plate is inserted into the groove of the anchor plate.

[0022] After the long side of the L-shaped steel bar passes through the connection hole on the anchor plate and the installation hole on the composite insulation board, the L-shaped steel bar is rotated so that the short side of the L-shaped steel bar is inserted into the wedge block through the receiving groove.

[0023] Preferably, the floor slab is provided with two sets of vertical lapped reinforcing bars, each set of which is provided with horizontal fixing reinforcing bars. The first set of vertical lapped reinforcing bars is located at the position of the steel mesh, and the second set of vertical lapped reinforcing bars is located at the position of the wall reinforcement. When tying the base wall reinforcement, a chalk line is used on the floor slab to mark the position lines and control lines of the wall, edge components, and door and window openings. The vertical lapped reinforcing bars are arranged according to the position lines and control lines, and the base wall reinforcement is tied at the second set of vertical lapped reinforcing bars.

[0024] Preferably, in step three, when installing the composite insulation system, the composite insulation units are installed according to the numbering order, with the bottom layer composite insulation unit installed first, and then the top layer composite insulation unit installed.

[0025] When installing the composite insulation unit at the bottom layer, after vertically hoisting the composite insulation unit into place, measure and correct its verticality. Once the verticality meets the requirements, tie the L-shaped steel bars of the composite insulation unit to the vertical lapped steel bars and the base wall steel bars respectively. Then tie the steel mesh of the composite insulation unit to the corresponding vertical lapped steel bars.

[0026] When installing adjacent composite insulation units, after the composite insulation unit is hoisted into place, square timber is placed on top of the composite insulation unit. The timber is then tapped with a hammer to fine-tune the position of the composite insulation unit. Next, the L-shaped steel bars of the composite insulation unit are tied to the vertical lapped steel bars and the base wall steel bars respectively. The steel mesh of the composite insulation unit is tied to the corresponding vertical lapped steel bars and then tied to the steel mesh of the already installed composite insulation unit.

[0027] Preferably, in step five, during the simultaneous pouring of concrete on both sides of the composite insulation unit, the height of the concrete on both sides of the composite insulation unit is observed, and the difference in the height of the concrete liquid level on both sides of the composite insulation unit is controlled within 400mm.

[0028] Preferably, when pouring the concrete, the steel pipe is inserted on the side of the composite thermal insulation unit far from the steel mesh; a vibrating rod with a diameter of 25-30 mm is inserted into the formwork for vibration, and the outside of the formwork is tapped or auxiliary vibration is performed by using a leather hammer; when local blockage occurs, the steel bar is used for insertion.

[0029] Preferably, in step six, after the formwork is removed, the thermal insulation wall is covered and watered or coated with a curing agent for curing, and the anchor rod hole is plugged; when plugging the anchor rod hole, polyurethane foam is injected into the anchor rod hole from the indoor, with a reservation of 20-30 mm, and after the polyurethane foam is hardened, waterproof mortar is injected into the reserved anchor rod hole for plugging and compaction.

[0030] In summary, due to the adoption of the above technical solutions, the present application has at least the following beneficial effects:

[0031] In the production of the composite thermal insulation system, the steel mesh and the composite thermal insulation board are connected into an integral structure, which can maintain a stable preset distance between the steel mesh and the composite thermal insulation board, prevent the steel mesh from slipping during the pouring of the concrete, and improve the thermal insulation and protection effect of the building outer wall; connecting the steel mesh and the composite thermal insulation board into a stable structure during the production of the composite thermal insulation system can also reduce the difficulty of installation and positioning of the composite thermal insulation system in the later stage, and improve the construction efficiency.

[0032] By pouring the concrete on both sides of the composite thermal insulation system at the same time, and controlling the height difference of the concrete pouring on both sides of the composite thermal insulation system within 400 mm, the deviation of the composite thermal insulation system can be further prevented, and the construction quality of the building outer wall can be improved; the thermal insulation layer, the protection layer and the structural layer are constructed at the same time, which can reduce the construction process and improve the construction efficiency. The thermal insulation layer is built into the building outer wall structure, which can isolate the fire source and improve the fireproof performance of the building outer wall.

[0033] After the pouring of the concrete, the protection layer, the thermal insulation layer and the structural layer of the building outer wall form an integral structure through the concrete and the connecting structure, which can prevent the thermal insulation layer from falling off, improve the building structure strength, realize the same service life of building thermal insulation and structure, and also save the repair cost caused by the falling off of the thermal insulation layer in the later stage. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is an integrated construction process diagram of the building outer wall built-in composite thermal insulation system of the exemplary embodiment of the present application.

[0035] Figure 2 is a schematic diagram of the composite thermal insulation system of the exemplary embodiment of the present application.

[0036] Figure 3 is a schematic diagram of the connecting structure of the exemplary embodiment of the present application.

[0037] Figure 4 is Figure 3 the left view of the anchor disc.

[0038] Figure 5 the left side of Figure 3 the anchor disc from another perspective, Figure 5 the right side of the left anchor disc is the right view.

[0039] Figure 6 is the connection structure of the exemplary embodiment of the present application.

[0040] Figure 7 is the composite insulation board assembly schematic diagram of the exemplary embodiment of the present application.

[0041] Figure 8 is the arrangement schematic diagram of the lapping steel bar on the floor slab of the exemplary embodiment of the present application.

[0042] Figure 9 is the composite insulation system installation schematic diagram of the exemplary embodiment of the present application.

[0043] Figure 10 is the formwork reinforcement schematic diagram of the exemplary embodiment of the present application.

[0044] Figure 11 is the pouring point control schematic diagram of the exemplary embodiment of the present application.

[0045] Figure 12 is the structure schematic diagram of the built-in composite insulation system of the building outer wall of the exemplary embodiment of the present application.

[0046] Identified in the figure: 1-composite insulation board, 2-steel mesh, 3-connection structure, 4-anchor disc, 5-chuck, 6-L-shaped steel bar, 7-wedge block, 8-groove, 9-receiving groove, 10-connection hole, 11-tensioning bolt, 12-limiting sleeve, 13-first insulation block, 14-second insulation block, 15-corrosion-proof cap, 16-floor slab, 17-vertical lapping steel bar, 18-base wall steel bar, 19-first formwork, 20-second formwork, 21-pull screw, 22-vertical keel, 23-horizontal keel, 24-inclined brace, 25-insulation layer, 26-protection layer, 27-structure layer, 28-interior finish layer, 29-exterior finish layer. DETAILED DESCRIPTION

[0047] The present application will be further described below in conjunction with the drawings and embodiments, so that the purpose, technical scheme and advantages of the present application are more clear and explicit. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0048] Reference Figure 1The integrated construction method of the building outer wall built-in composite thermal insulation system of the exemplary embodiment of the present application comprises the following steps:

[0049] Step one, composite thermal insulation system manufacturing; the composite thermal insulation system as a whole is a splicing structure, which is spliced by a plurality of composite thermal insulation units, each of which comprises a composite thermal insulation board 1, a steel mesh 2 and a connecting structure 3. When manufacturing the composite thermal insulation system, according to the arrangement of the composite thermal insulation system in the construction drawing, the node detail drawing and the related technical regulations, the composite thermal insulation system in the building outer wall is decomposed, numbered, sampled, and then the composite thermal insulation units are manufactured according to the number classification.

[0050] When manufacturing the composite thermal insulation unit, the connecting structure 3 is used to connect the composite thermal insulation board 1 and the steel mesh 2, so as to keep a preset distance between the steel mesh 2 and the composite thermal insulation board 1.

[0051] Reference Figure 2 , Figure 3 The connecting structure 3 comprises a chuck 5, an anchor disc 4 and an L-shaped steel bar 6; the side surface center of the anchor disc 4 is coaxially provided with a wedge block 7, the wedge block 7 is a platform or a column structure, and the wedge block 7 is integrally arranged with the anchor disc 4; the anchor disc 4 is provided with longitudinal and transverse intersecting grooves 8, the grooves 8 extend from the anchor disc 4 into the wedge block 7, the wedge block 7 is axially provided with a connecting hole 10 which communicates the wedge block 7 and the chuck 5, and the connecting hole 10 is eccentrically arranged.

[0052] The connecting process of the steel mesh 2 and the composite thermal insulation board 1 comprises the following steps: an installation hole which penetrates the composite thermal insulation board 1 is formed at a preset position of the composite thermal insulation board 1, the installation hole can be formed on site or reserved during the manufacturing process of the composite thermal insulation board 1, the size of the installation hole is matched with the size of the L-shaped steel bar 6 (the size of the installation hole can be changed according to actual installation needs); the anchor disc 4 is sleeved on the steel mesh 2 through the grooves 8 on the anchor disc 4, so that the steel mesh 2 is clamped on the wedge block 7 of the anchor disc 4 and the steel mesh 2 is located at the groove bottom of the wedge block 7; the anchor disc 4 or the steel mesh 2 is moved, the anchor disc 4 is attached to one side surface of the composite thermal insulation board 1, the L-shaped steel bar 6 is inserted, so that the long side of the L-shaped steel bar 6 penetrates the connecting hole 10 on the anchor disc 4 and the installation hole on the composite thermal insulation board 1 at the same time, and the short side of the L-shaped steel bar 6 is clamped on the wedge block 7; the chuck 5 is penetrated through the L-shaped steel bar 6 on the side surface of the composite thermal insulation board 1 which is away from the steel mesh 2, so as to fix the steel mesh 2 and the composite thermal insulation board 1 together.

[0053] Reference Figures 2-5The end face of the wedge-shaped block 7 is further provided with a containing groove 9, the containing groove on the end face of the wedge-shaped block 7 is communicated with the side face of the wedge-shaped block 7, the short edge of the L-shaped steel bar 6 is located in the containing groove 9, so as to prevent the L-shaped steel bar 6 from interfering with the installation of the formwork and affecting the construction of the protective layer; the connecting hole 10 is arranged in the area of the containing groove on the end face of the wedge-shaped block 7, the connecting hole 10 is communicated with the anchor disc 4 by the groove bottom of the containing groove 9; after the L-shaped steel bar 6 passes through the anchor disc 4, the L-shaped steel bar 6 is rotated, so that the short edge of the L-shaped steel bar 6 is clamped into the wedge-shaped block 7 through the containing groove 9, thereby stably connecting the anchor disc 4 and the L-shaped steel bar 6. The total height of the anchor disc 4 and the wedge-shaped block 7 is determined according to the thickness requirement of the protective layer of the building outer wall.

[0054] The anchor disc 4 is further provided with a limiting sleeve 12, the limiting sleeve 12 is coaxially arranged at the connecting hole 10 of the anchor disc 4, the limiting sleeve 12 is integrally arranged or detachably arranged with the anchor disc 4, the limiting sleeve 12 is oppositely arranged with the wedge-shaped block 7, the inner diameter of the limiting sleeve 12 is matched with the size of the L-shaped steel bar 6, and the length of the limiting sleeve 12 is not greater than the thickness of the thermal insulation board. When the limiting sleeve 12 is arranged on the anchor disc 4, the size of the mounting hole on the composite thermal insulation board 1 is matched with the size of the limiting sleeve 12; when the steel mesh 2 is connected with the composite thermal insulation board 1, the limiting sleeve 12 is inserted into the composite thermal insulation board 1, so that the anchor disc 4 is stably attached to the side face of the composite thermal insulation board 1, and then the L-shaped steel bar 6 is inserted.

[0055] During the connection of the L-shaped steel bar 6 and the chuck 5, threads can be arranged on the long edge of the L-shaped steel bar 6 and threads are arranged on the chuck 5, so as to stably fix the thermal insulation board by the chuck 5; a tension bolt 11 can also be used to fasten the chuck 5 on the composite thermal insulation board 1 (for reference Figure 6 ). When the limiting sleeve 12 is arranged on the anchor disc 4, threads can also be arranged on the outer side face of the limiting sleeve 12; when the length of the limiting sleeve 12 is greater than the thickness of the thermal insulation board, the limiting sleeve 12 is threadedly connected with the chuck 5. By using this connection mode, the L-shaped steel bar 6 can be prevented from directly contacting the thermal insulation board, and the cold bridge phenomenon of the L-shaped steel bar 6 can be prevented from affecting the thermal insulation effect of the composite thermal insulation board 1.

[0056] The anchor disc 4 is made of polyamide, polyethylene or polypropylene, and the pullout resistance thereof is not less than 0.6 KN; the chuck 5 is made of engineering plastics (such as polyamide, polycarbonate or polyphenyl ether), so as to prevent the connection structure 3 from being affected by the large temperature difference and affecting the thermal insulation performance of the building outer wall; the L-shaped steel bar 6 is preferably made of HPB300 or HRB400 steel bar, and the nominal diameter thereof is not less than 8 mm.

[0057] The steel mesh 2 is made of 3*50*50mm galvanized welded mesh. After the steel mesh 2 is connected with the 3*50*50mm galvanized welded mesh, a limiting plate (not shown in the figure) can be inserted into the groove 8 of the anchor disc 4. The limiting plate can prevent the steel mesh 2 from slipping in the wedge block 7, so that the steel mesh 2 and the insulation board maintain a stable preset distance. After pouring the concrete, the protective layer of the building outer wall can be effectively prevented from cracking, and the protection effect of the protective layer is ensured.

[0058] During the connection of the composite insulation board 1 and the steel mesh 2, it is preferable to connect the composite insulation board 1 and the steel mesh 2 by using four connection structures 3. In each composite insulation unit, the composite insulation board 1 includes a first insulation block 13 and a second insulation block 14 (refer to Figure 7 ). The second insulation block 14 is fixedly arranged on one side of the first insulation block 13, and the length of the first insulation block 13 is greater than that of the second insulation block 14 to form a convex-shaped structure composite insulation board, which facilitates the connection between adjacent composite insulation units. The first insulation block 13 is made of molded polystyrene board, extruded polystyrene board, graphite polystyrene board, graphite extruded board or vitrified microsphere layer composite board. The second insulation block 14 is made of molded polystyrene board, extruded polystyrene board, graphite polystyrene board, graphite extruded board or vitrified microsphere layer composite board. When the composite insulation unit is made, the steel mesh 2 is connected to the surface of the first insulation block 13 or the second insulation block 14 of the composite insulation board.

[0059] After the composite insulation unit is made, a corrosion-resistant cap 15 (refer to Figure 3 ) that is matched with the L-shaped steel bar 6 is screwed into the end of the long side of the L-shaped steel bar 6 to prevent moisture, oxygen or other chemical substances from entering the L-shaped steel bar 6 from the end of the L-shaped steel bar 6, reduce the corrosion of the steel bar, and improve the service life of the L-shaped steel bar 6.

[0060] Step two, binding of the base wall steel bars 18; the base wall steel bars 18 are bound on the floor slab 16 (refer to Figure 9 ). The floor slab 16 is a completed concrete structure. The floor slab 16 can be a floor, a roof eave, a pile cap foundation or other structures. The thickness of the floor slab 16 is 80mm. When the floor slab 16 is a roof eave, the floor slab 16 overhangs the wall 130mm. When the floor slab 16 is constructed, two groups of vertical overlapping steel bars 17 (refer to Figure 8), and horizontal fixing steel bars are arranged at the top of the vertical lapping steel bars 17 of each group to prevent the deformation of the structure of the vertical lapping steel bars 17. Each group of vertical lapping steel bars 17 extends 50-100 cm above the top of the floor slab 16. The first group of vertical lapping steel bars 17 is arranged at the position of the steel mesh, and the second group of vertical lapping steel bars 17 is arranged at the position of the base wall steel bars 18. When the base wall steel bars 18 are bound, the ink duct is used to position the wire at the corresponding position on the floor slab 16 to mark the position lines and control lines of the wall body, edge components (hidden columns), door and window openings, and then the vertical lapping steel bars 17 are arranged according to the position lines and control lines. The base wall steel bars 18 are bound at the second group of vertical lapping steel bars 17.

[0061] Step three, installation of the composite thermal insulation system; according to the number of the composite thermal insulation unit, the composite thermal insulation unit is sequentially installed by using the vertical lifting method of the tower crane and manual work. During the installation, the composite thermal insulation unit at the bottom is installed first, and then the composite thermal insulation unit at the top is installed. During the lifting of the composite thermal insulation unit, square timbers are arranged at the contact position between the lifting rope and the composite thermal insulation unit to prevent the deformation of the steel mesh. The installation process of the composite thermal insulation unit at the bottom includes: after the vertical lifting of the composite thermal insulation unit, the verticality of the composite thermal insulation unit is measured and corrected. After the verticality meets the requirements, the L-shaped steel bars 6 of the composite thermal insulation unit are bound and connected with the vertical lapping steel bars 17 and the base wall steel bars 18 respectively, and then the steel mesh 2 of the composite thermal insulation unit is bound and connected with the corresponding vertical lapping steel bars.

[0062] During the installation of adjacent composite thermal insulation units, after the lifting of the composite thermal insulation unit, square timbers are arranged on the composite thermal insulation unit, and the position of the composite thermal insulation unit is fine-tuned by using an iron hammer to knock the square timbers. Then, the L-shaped steel bars 6 of the composite thermal insulation unit are bound and connected with the vertical lapping steel bars 17 and the base wall steel bars 18 respectively, and then the steel mesh 2 of the composite thermal insulation unit is bound and connected with the corresponding vertical lapping steel bars and the steel mesh 2 of the already installed composite thermal insulation unit.

[0063] After the installation of the composite thermal insulation system is completed, the laying and fixing of the wall body pipe, box and embedded part are performed. When the pipe is vertically laid, the steel mesh 2 is cut off. After the laying of the pipe is completed, the same specification of steel mesh 2 is used to repair the cut-off part. The repaired steel mesh 2 is connected with the steel mesh 2 on the composite thermal insulation unit by binding, and the number of binding points is not less than 1 / 4 of the number of mesh of the steel mesh 2.

[0064] Step four, formwork setting; refer to Figure 10A first formwork 19 is arranged on the side of the composite thermal insulation system close to the steel mesh, the distance between the first formwork 19 and the composite thermal insulation board is 50-60 mm, a second formwork 20 is arranged on the side of the composite thermal insulation system away from the steel mesh, the distance between the second formwork 20 and the composite thermal insulation board is 200 mm, a Φ14 tensioning screw rod 21 is used to connect the first formwork 19, the composite thermal insulation system and the second formwork 20, the distance between the tensioning screw rods 21 is 450 mm. The first formwork 19 and the second formwork 20 are both 15 mm thick plywood formworks, vertical keels 22 are arranged on the outer side of the plywood formworks, the vertical keels 22 are 40*90 mm square woods, the distance between adjacent vertical keels 22 is 200 mm, horizontal keels 23 are arranged vertically on the vertical keels 22, the horizontal keels 23 are Φ48 double steel pipes, the distance between adjacent double steel pipes is 450 mm, the distance between the double steel pipe close to the ground and the ground is not more than 200 mm; the first formwork 19 and the second formwork 20 are both provided with Φ48 single steel pipe inclined braces 24, the angle between the inclined braces 24 and the ground is 45°, the height of the inclined braces 24 from the ground is 1 m and 1.6 m respectively, and the horizontal distance is 2 m.

[0065] During the formwork setting process, mortar is laid on the bottom of the formwork when the formwork is in place, or the formwork is laid and then the mortar is applied to the joints on the bottom of the formwork, sponge sealing strips or adhesive tape are filled and pressed in the joint parts between adjacent formworks to prevent mortar leakage; during the connection of the formwork and the composite thermal insulation system, holes are drilled from the indoor side to the outdoor side (from the second formwork to the first formwork direction) when the tensioning screw rod holes are to be set on site, so as to facilitate the cleaning of the debris falling on the floor slab after drilling, the debris on the floor slab is blown clean by a handheld hair dryer and manual labor after the tensioning screw rod 21 on the bottom of the formwork passes through the formwork and the composite thermal insulation system, and then the formwork is reinforced.

[0066] Step five, concrete pouring; self-compacting concrete is poured on both sides of the composite thermal insulation system; the maximum particle size of the aggregate of the self-compacting concrete is not more than 15 mm, the slump is not less than 230 mm, the temperature of the concrete into the mold is controlled at 5-35℃, pouring is avoided during rainfall or snowfall to prevent rainfall, snowfall or water accumulation in the formwork from affecting the performance of the self-compacting concrete, resulting in segregation of the self-compacting concrete.

[0067] Before pouring concrete, the pump truck and concrete delivery pipeline are cleaned, and a screen with a mesh size of 20 mm is installed at the inlet of the pump truck to prevent debris in the concrete from entering the pump truck and to reduce blockage and resistance in the pump truck pipeline, thereby improving the pumping efficiency of the pump truck. During concrete pouring, the continuity of concrete pouring is maintained, and when the pump is stopped for too long, the concrete in the pump and pump pipeline is removed and re-poured. The concrete pouring point is set at the intersection of the cross-shaped, T-shaped or L-shaped wall to facilitate the uniform flow of concrete, and the horizontal flow distance of the concrete is not more than 7 m (the specific flow distance is determined according to the construction site). The pouring height of the concrete is not more than 5 m, and when the pouring height is too large, a string drum or chute is added to prevent the impact force generated by the falling concrete from being too large, causing the coarse aggregate to sink and causing the concrete to segregate. For the thinner side concrete (the concrete filled in the space formed by the first formwork and the composite thermal insulation system, and the concrete filled in the space formed by the second formwork and the composite thermal insulation system is thicker side concrete), a hopper or baffle is provided at the top opening of the first formwork 19 to control the speed of the thinner side concrete into the mold. Similarly, a hopper or baffle can also be provided at the top opening of the second formwork 20 to control the speed of the thicker side concrete into the mold.

[0068] During the concrete pouring process, the height of the concrete on both sides of the composite thermal insulation system is observed using methods such as hand-held light irradiation and rod measurement, and the height difference h between the concrete on both sides of the composite thermal insulation system is controlled within 400 mm to prevent the composite thermal insulation system from being offset due to the lateral pressure generated by the height difference between the concrete on both sides, thereby affecting the construction quality of the building exterior wall. The height difference h between the concrete on both sides of any cross section of the composite thermal insulation system in the length direction is not more than 400 mm, and when the height difference h of the concrete at a certain cross section is around 400 mm, concrete is supplemented on the side with lower concrete level. Referring to Figure 11 , when controlling the height difference h of the concrete at a certain cross section, the concrete pouring sequence on both sides of the composite thermal insulation board 1 can be in the order of pouring point 1, pouring point 3, and pouring point 2, for example. When the height of the thinner side concrete in the middle is higher than the height of the thicker side concrete in the middle, the height of the thinner side concrete on both sides is lower than the height of the thicker side concrete on both sides, the overall height of the thinner side concrete is higher than the overall height of the thicker side concrete, the height difference between the middle of the two is h1, and the heights of the two sides are h3 and h2 respectively, the middle of the thicker side concrete (pouring point 1) is poured first, and then the two sides of the thinner side concrete (pouring point 3 and pouring point 2) are poured. At the same pouring point, continuous pouring is performed using the push method to prevent air pockets from forming during pouring; when switching between multiple pouring points, the next layer of concrete is poured before the already poured concrete has set.

[0069] During the concrete pouring process, steel pipes for scaffolding can be vertically inserted into the thicker side concrete to control the section, thereby controlling the concrete flow rate on both sides of the composite thermal insulation system and improving the pouring quality; before inserting the steel pipes, hooks are welded on the steel pipes to facilitate the removal of the steel pipes. During the concrete pouring process, the step of vibrating the concrete is also included; when vibrating, a 25-30mm vibrating rod is inserted into the thicker side concrete for vibration, and auxiliary vibration is performed by point vibration or using a hammer to knock from the outside of the formwork, thereby improving the pouring quality of the concrete and making the surface of the poured and formed building outer wall smooth; when local blockage occurs, steel bars are used for insertion and vibration.

[0070] Step six, form removal and concrete curing; the form removal time of the building outer wall is delayed by 24h compared with the ordinary shear wall, after the form removal, immediate covering and watering curing or brushing curing agent curing are performed, and the hole of the tensioning screw rod is plugged; the curing time is delayed by more than 24h compared with the ordinary shear wall, when plugging the hole of the tensioning screw rod, polyurethane foaming glue is injected into the hole of the tensioning screw rod from the indoor, 20-30mm is reserved, after the polyurethane foaming glue is hardened, waterproof mortar is injected into the reserved hole of the tensioning screw rod for plugging and densification.

[0071] Figure 12 The building outer wall embedded composite thermal insulation system structure constructed by using the construction method of the present application, in the structure, the composite thermal insulation system is embedded in the building outer wall, the connecting structure 3 of the composite thermal insulation system connects the protective layer 26 and the structural layer 27 into an integrated structure, realizing reliable connection of the thermal insulation layer 25, the protective layer 26 and the structural layer 27, effectively preventing the thermal insulation layer 25 from separating from the building outer wall, and improving the thermal insulation effect of the building outer wall; and under the action of the connecting structure 3, the steel mesh 2 can be stably kept at the preset position, effectively improving the structural strength and stability of the protective layer 26 and enhancing the protection effect of the protective layer 26. After the construction of the building outer wall is completed, the outer finish layer 29 is constructed on the surface of the protective layer 26, and the inner finish layer 28 is constructed on the surface of the structural layer 27.

[0072] The above is only a detailed description of the specific embodiments of the present application, not a limitation of the present application. Various substitutions, modifications and improvements made by those skilled in the related technical field without departing from the principles and scope of the present application should be included in the protection scope of the present application.

Claims

1. An integrated construction method for a composite thermal insulation system built into the exterior wall of a building, characterized in that, Includes the following steps: Step 1: Fabrication of composite insulation system; The composite insulation system in the building exterior wall is decomposed, numbered, and sampled, and then composite insulation units are fabricated according to the numbering; When fabricating composite insulation units, a connecting structure (3) is used to connect the composite insulation board (1) and the steel mesh (2) so that the steel mesh (2) and the composite insulation board (1) maintain a preset distance; Step 2: Binding of base wall reinforcement (18); Bind the base wall reinforcement (18) at the position of the vertical lapped reinforcement (17) on the floor slab (16). Step 3: Installation of the composite insulation system; Based on the numbering of the composite insulation units, the composite insulation units are installed sequentially using a tower crane for vertical hoisting in conjunction with manual labor. Step 4: Template erection; erect the first template (19) on the side of the composite insulation system closest to the steel mesh and erect the second template (20) on the side away from the steel mesh. Step 5: Concrete pouring; Concrete is poured simultaneously on both sides of the composite insulation system; Step Six: Formwork Removal and Concrete Curing; The connecting structure (3) includes an anchor plate (4), a chuck (5), and an L-shaped steel bar (6); wherein, a wedge block (7) is coaxially arranged on the side center of the anchor plate (4), and the wedge block (7) is integrally arranged with the anchor plate (4); the anchor plate (4) is provided with crisscrossing grooves (8), the grooves (8) extend from the anchor plate (4) into the wedge block (7), and the wedge block (7) is axially provided with a connecting hole (10) connecting the wedge block (7) and the chuck (5), and the connecting hole (10) is eccentrically arranged; The wedge block (7) is also provided with a receiving groove (9) on its end face. The receiving groove on the end face of the wedge block (7) is connected to the side of the wedge block (7). The short side of the L-shaped steel bar (6) is located in the receiving groove (9). The connecting hole (10) is located in the area of ​​the receiving groove corresponding to the end face of the wedge block (7). The connecting hole (10) is connected to the anchor plate (4) through the bottom of the receiving groove (9). After the L-shaped steel bar (6) passes through the anchor plate (4), the L-shaped steel bar (6) is rotated so that the short side of the L-shaped steel bar (6) is inserted into the wedge block (7) through the receiving groove (9). The connection process between the composite insulation board (1) and the steel mesh (2) includes: An installation hole is made through the composite insulation board (1) at a predetermined position; The anchor plate (4) is inserted into the steel mesh (2) through the groove (8) on the anchor plate (4), so that the steel mesh (2) is stuck into the wedge block (7) of the anchor plate (4) and the steel mesh (2) is at the bottom of the groove of the wedge block (7); Move the anchor plate (4) or steel mesh (2) to attach the anchor plate (4) to one side of the composite insulation board (1), insert the L-shaped steel bar (6) so that the long side of the L-shaped steel bar (6) passes through the connection hole (10) on the anchor plate (4) and the installation hole on the composite insulation board (1) at the same time, and the short side of the L-shaped steel bar (6) is engaged on the wedge block (7). On the side of the composite insulation board (1) away from the steel mesh (2), the chuck (5) passes through the L-shaped steel bar (6) to fix the steel mesh (2) and the composite insulation board (1) together; Two sets of vertical lapped steel bars (17) are provided on the floor slab (16). Each set of vertical lapped steel bars (17) is provided with horizontal fixed steel bars. The first set of vertical lapped steel bars (17) is located at the position of the steel mesh (2), and the second set of vertical lapped steel bars (17) is located at the position of the wall steel bars. When tying the base wall steel bars (18), the chalk line is used to mark the position lines and control lines of the wall, edge components, and door and window openings on the floor slab (16). The vertical lapped steel bars (17) are arranged according to the position lines and control lines. The base wall steel bars (18) are tied at the second set of vertical lapped steel bars (17). In step three, when installing the composite insulation system, the composite insulation units are installed according to the numbering order, with the bottom layer composite insulation unit installed first, followed by the top layer composite insulation unit. When installing the composite insulation unit at the bottom layer, after the composite insulation unit is vertically hoisted into place, the verticality is measured and corrected. After the verticality meets the requirements, the L-shaped steel bar (6) of the composite insulation unit is tied to the vertical lap steel bar (17) and the base wall steel bar (18) respectively. Then the steel mesh (2) of the composite insulation unit is tied to the corresponding vertical lap steel bar (17). When installing adjacent composite insulation units, after the composite insulation unit is hoisted into place, square timber is placed on the composite insulation unit and the square timber is struck with a hammer to make a fine adjustment to the position of the composite insulation unit. Then, the L-shaped steel bar (6) of the composite insulation unit is tied to the vertical lap steel bar (17) and the base wall steel bar (18) respectively. The steel mesh (2) of the composite insulation unit is tied to the corresponding vertical lap steel bar (17) and the steel mesh (2) of the installed composite insulation unit is tied to the steel mesh (2) of the composite insulation unit.

2. The integrated construction method for the building exterior wall built-in composite thermal insulation system according to claim 1, characterized in that, A limiting sleeve (12) is provided on the anchor plate (4). The limiting sleeve (12) is coaxially arranged at the connection hole (10) of the anchor plate (4). The limiting sleeve (12) is arranged opposite to the wedge block (7). When the anchor plate (4) is attached to one side of the insulation board, the limiting sleeve (12) is inserted into the insulation board so that the anchor plate (4) is stably attached to the side of the insulation board.

3. The integrated construction method for the building exterior wall built-in composite thermal insulation system according to claim 1, characterized in that, After the composite insulation board (1) is connected to the steel mesh (2), a limiting plate is inserted into the groove (8) of the anchor plate (4); After the long side of the L-shaped steel bar (6) passes through the connection hole (10) on the anchor plate (4) and the installation hole on the composite insulation board (1), the L-shaped steel bar (6) is rotated so that the short side of the L-shaped steel bar (6) is inserted into the wedge block (7) through the receiving groove (9).

4. The integrated construction method for the building exterior wall built-in composite thermal insulation system according to claim 1, characterized in that, In step five, during the simultaneous pouring of concrete on both sides of the composite insulation unit, the height of the concrete on both sides of the composite insulation unit is observed, and the difference in the height of the concrete liquid level on both sides of the composite insulation unit is controlled within 400mm.

5. The integrated construction method for the building exterior wall built-in composite thermal insulation system according to claim 4, characterized in that, When pouring concrete, insert steel pipes on the side of the composite insulation unit away from the steel mesh (2); use a vibrator with a diameter of 25-30mm to vibrate inside the template, and use spot vibration on the outside of the template or tap with a rubber hammer for auxiliary vibration; when local blockage occurs, use steel bars for tamping.

6. The integrated construction method for the building exterior wall built-in composite thermal insulation system according to claim 1, characterized in that, In step six, after the template is removed, the insulation wall is covered and watered for curing or coated with a curing agent for curing, and the tie rod holes are sealed. When sealing the tie rod holes, polyurethane foam is injected into the tie rod holes from inside the room, leaving a 20-30mm gap. After the polyurethane foam has dried and hardened, waterproof mortar is injected into the reserved tie rod holes to seal them tightly.

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