Construction method of aluminum alloy formwork system for residential building

Abstract

The invention discloses a construction method of an aluminum alloy formwork system for residential buildings. According to the construction method, the difficulty of assembly and disassembly construction and turnover use of aluminum alloy formworks can be reduced, and the construction quality and the construction efficiency of an assembly type structural system are improved. The construction method comprises the following steps: rechecking an axis and a wall line projected by a wall body according to a building design scheme, so that the axis and the wall line meet construction requirements; determining a wall body vertical reference line, and positioning a wall corner; a wall formwork system is installed, and perpendicularity is corrected; a beam formwork system is installed and corrected; a floor formwork system is installed and corrected; wall body concrete, beam body concrete, column concrete and floor slab concrete are poured, so that the wall body, the beam body, the column and the floor slab are connected into an integral structure; and the wall formwork system, the beam formwork system and the floor formwork system are dismantled, and the dismantled wall formwork system, the dismantled beam formwork system and the dismantled floor formwork system are conveyed to an upper-layer building for construction through a feeding opening.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a construction method of an aluminum alloy formwork system for residential buildings. Background Art

[0002] With the development of building industrialization, high-rise building construction (with more than 10 floors) gradually adopts a prefabricated structural system that combines cast-in-place and prefabricated components. Aluminum alloy formwork has been widely used in prefabricated structural systems due to its environmental protection and high reuse rate. The following problems exist in the construction process of aluminum alloy formwork: aluminum alloy formwork is an integral formwork, which is mainly suitable for construction in parts with regular structures and open spaces. However, in actual construction, there are situations where the structural space is narrow, and large-sized aluminum alloy formwork is difficult to remove; there are many types and quantities of aluminum alloy formworks required for construction, and improper assembly and disassembly sequence and method of aluminum alloy formworks will affect the construction quality of the prefabricated structural system; it is difficult to control the deviation of aluminum alloy formwork installation, and improper deviation control will affect the overall construction quality of the prefabricated structural system; when it needs to be circulated to the upper level, it is difficult to transport the aluminum alloy formwork upward, and the turnover efficiency is low. Summary of the invention

[0003] At least one of the purposes of the present invention is to provide a construction method for an aluminum alloy formwork system for residential buildings in order to overcome the problems existing in the above-mentioned prior art, which can reduce the difficulty of assembly and disassembly of the aluminum alloy formwork and turnover use, and improve the construction quality and construction efficiency of the prefabricated structural system.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention includes the following aspects.

[0005] A construction method for an aluminum alloy formwork system for residential buildings comprises the following steps: Step 1: Check the lines: According to the architectural design plan, check the axis and wall line of the wall projection to ensure that the axis and wall line meet the construction requirements; Step 2: Determine the vertical reference line of the wall and locate the corner; Step 3: Install the wall formwork system and calibrate the verticality; Step 4: Install the beam formwork system and calibrate it; Step 5: Install the floor formwork system and calibrate it; Step 6: pouring wall concrete, beam concrete, column concrete and floor slab concrete to connect the wall, beam, column and floor slab into an integral structure; Step 7: dismantle the wall formwork system, beam formwork system and floor formwork system, and transfer the dismantled wall formwork system, beam formwork system and floor formwork system to the upper building construction through the loading port.

[0006] Preferably, in the step 2, the specific process of determining the vertical reference line of the wall and locating the wall corner includes: projecting the wall control line 150 mm outside the wall line as the vertical positioning reference line of the wall; welding a plurality of Ф14 mm positioning bars perpendicular to the vertical steel bars of the wall on the vertical steel bars of the wall along the length direction of the wall steel bars, and welding one or more positioning bars at both ends of the length direction of the wall steel bars.

[0007] Preferably, the wall formwork system includes a wall end formwork and a wall side formwork, and the installation process of the wall formwork system includes: setting multiple rows of internal supports on the wall reinforcement along the height direction of the wall reinforcement; cleaning the surface of the wall formwork and applying a release agent on the panel surface of the wall formwork; and installing the wall formwork system piece by piece from both ends of the wall reinforcement to the middle according to the wall control line.

[0008] Preferably, the beam formwork system comprises a beam bottom formwork and a beam side formwork, and the installation process of the beam formwork system comprises: Transporting the beam bottom formwork and the beam side formwork to a preset installation position, installing one or more rows of beam bottom formwork supports along the length direction of the beam body, wherein the beam bottom formwork supports are connected to the early removal head; Adjust the height of the early removal head on the beam bottom formwork support, and then connect the beam bottom formwork and the early removal head; Correct the verticality of the beam bottom formwork, and then install the beam side formwork on both sides of the beam bottom formwork.

[0009] Preferably, the floor formwork system includes floor formwork and floor keels. The installation process of the floor formwork system includes: after checking that the tip of the plumb bob is aligned with the vertical reference line of the wall, the floor keels are installed. When installing the floor keels, an adjustable single-bracket top is used for leveling to keep the floor keels in a horizontal state, and then the diagonal of the floor formwork is checked. After the correction is correct, the floor formwork is installed. During the installation process, the floor formworks are arranged in parallel one by one. The floor formworks are first temporarily fixed with pins. After the installation of the floor formwork of each unit is completed, the level is used to measure its flatness and the installation elevation of the corresponding layer. When the installation of the floor formwork deviates, the adjustable single-bracket top is used for correction. After the flatness of the floor formwork of the corresponding layer and the deviation of the installation elevation meet the requirements, the pins are used to tighten the floor formwork. After the correction of the flatness of the floor formwork of each unit and the installation elevation of the corresponding layer is completed, the flatness and installation elevation of the floor formwork of the entire floor are checked.

[0010] Preferably, during the installation of the floor formwork, a 1.5-2m high climbing stool is provided. The overall structure of the climbing stool frame is an isosceles step structure, and support rods and steel grids are provided on the top of the frame, and the steel grids are fixedly connected to the frame.

[0011] Preferably, during the installation of the floor formwork, a loading port template is installed at a preset position to form a loading port; the cross-sectional shape of the loading port is a trapezoidal structure, the top width is wider than the bottom width, and the top cross-sectional shape of the loading port is a rectangle; the loading port template is a planar structure with a trapezoidal cross-section, and multiple loading port templates are assembled into a trapezoidal platform structure; during the installation of the loading port template, the bottom of each loading port template is bolted to the floor template, adjacent loading port templates are connected by bolts, and the joints of adjacent loading port templates are sealed with rubber strips; in the height direction of the loading port template, the loading port template is connected to the floor slab steel bars.

[0012] Preferably, during the connection process between the feeding port template and the floor slab steel bars, the floor slab steel bars are passed through the feeding port template, and stop blocks are filled at the connection positions of the floor slab steel bars and the feeding port template. After the floor slab steel bars pass through the feeding port template, support ribs are arranged at positions of the floor slab steel bars close to the feeding port template panel to support the feeding port template, and steel pipes or angle steel supports are arranged between the relative feeding port templates.

[0013] Preferably, in step seven, after the template is transferred through the feeding port, a patching plate is set at the bottom of the feeding port, the patching plate is supported by multiple adjustable steel pipes, and then reinforcing steel bars are used at the feeding port to connect the floor slab steel bars around the feeding port, and concrete is poured to seal the feeding port so that the floor slab forms an integral structure.

[0014] Preferably, during the installation of the wall formwork system, the beam formwork system and the floor formwork system, an aluminum-wood combination method is used for construction at locations where the structure changes.

[0015] In summary, due to the adoption of the above technical solution, the present invention has at least the following beneficial effects: The present invention optimizes the installation of aluminum alloy formwork smoothly, reduces the installation deviation of the aluminum alloy formwork, and improves the construction quality of the building; for the parts with structural changes, a combination of aluminum and wood formwork is used for construction, and an adjustable formwork and a wooden formwork are used as the adjustment section, which solves the problem that the pre-made standard aluminum alloy formwork cannot be installed at the parts with structural changes, reduces the construction difficulty, and improves the construction flexibility.

[0016] At the location where a feeding port is required, a trapezoidal feeding port template is used for block installation, and the floor slab reinforcement is passed through the feeding port template. When the feeding port is sealed later, the floor slab reinforcement extending out of the feeding port template can be connected with the reinforcing reinforcement to form an integral structure, thereby improving the structural strength of the floor slab at the feeding port location. Compared with the feeding port construction method in which an integral mold box is used at the feeding port and the floor slab reinforcement needs to be cut off at the mold box, the floor slab at the feeding port location is stronger after the trapezoidal feeding port template is used for block construction, thereby ensuring the integrity and structural strength of the floor slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a construction flow chart of an aluminum alloy formwork system for residential buildings according to an exemplary embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the installation of the wall side formwork of an exemplary embodiment of the present invention.

[0019] Figure 3 It is an enlarged schematic diagram of the connection between the wall side form and the inner support of an exemplary embodiment of the present invention.

[0020] Figure 4 It is a schematic diagram of the plane structure of the wall side formwork of an exemplary embodiment of the present invention.

[0021] Figure 5 Schematic diagram of plumb bob arrangement according to an exemplary embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of the connection at the corner of the wall side mold of an exemplary embodiment of the present invention.

[0023] Figure 7 Schematic diagram of the K-plate plane structure of an exemplary embodiment of the present invention.

[0024] Figure 8 Schematic diagram of beam formwork system installation according to an exemplary embodiment of the present invention.

[0025] Fig. 9 is a top view of a beam form system connection according to an exemplary embodiment of the present invention.

[0026] Fig.10 It is a schematic diagram of the floor formwork plan layout of an exemplary embodiment of the present invention.

[0027] Fig.11 It is a schematic diagram of the three-dimensional structure of a climbing stool according to an exemplary embodiment of the present invention.

[0028] Fig.12 2 is a front view of a frame structure of a step-up stool according to an exemplary embodiment of the present invention.

[0029] Fig.13 2 is a top view of the installation of the feed port template according to an exemplary embodiment of the present invention.

[0030] Fig.14 2 is a side view of the installation of the loading port template according to an exemplary embodiment of the present invention.

[0031] Fig.15 Schematic diagram of floor panel installation according to an exemplary embodiment of the present invention.

[0032] Fig.16 2 is a schematic diagram of installing a patching plate according to an exemplary embodiment of the present invention.

[0033] Fig.17 It is a schematic structural diagram of an angle steel strut supporting a wall side formwork according to an exemplary embodiment of the present invention.

[0034] Fig.18 It is a schematic diagram of the combination of aluminum and wood formwork at the floor connection position of an exemplary embodiment of the present invention.

[0035] Fig.19 It is a schematic diagram of the combination of aluminum and wood formwork at the floor plan portion of an exemplary embodiment of the present invention.

[0036] Fig. 20 It is a schematic diagram of the combination of aluminum and wood formwork at the beam body part of an exemplary embodiment of the present invention.

[0037] Fig.21 It is a schematic diagram of the combination of aluminum and wood formwork at the beam body part of another exemplary embodiment of the present invention.

[0038] Fig. 22 It is a schematic diagram of template installation at the wall-column joint portion of an exemplary embodiment of the present invention.

[0039] Fig.23 It is a schematic diagram of the inner tube structure of an adjustable single-support top according to an exemplary embodiment of the present invention.

[0040] Fig.24 It is a schematic diagram of the outer tube structure of an adjustable single-support top according to an exemplary embodiment of the present invention.

[0042] Markings in the figure: 1- wall side form, 2- inner support, 3- hose, 4- cup head cover, 5- nut, 6- adjustable diagonal support, 7- plumb bob, 8- angle steel support rod, 9- K plate, 10- C groove, 11- tension screw, 12- conical screw, 13- beam bottom form, 14- beam side form, 15- back rib, 16- beam bottom form support, 17- internal angle form, 18- external angle form, 19- column form, 20- floor form, 21- floor keel, 22- adjustable single support top, 23- climbing stool, 231- frame, 232- support leg, 23 3-cross bar, 234-support bar, 235-steel grid, 24-feeding port, 25-feeding port template, 26-floor reinforcement, 27-support ribs, 28-feeding port support, 29-floor panel, 30-hole filling plate, 31-adjustable steel pipe support, 32-wood formwork, 33-rear formwork, 34-wooden square, 35-end plate, 36-steel pipe, 37-wooden formwork strip, 38-channel steel connector, 39-inner pipe, 40-outer pipe, 41-prefabricated floor, 42-angle iron, 43-locking screw, 44-adjusting formwork. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments to make the purpose, technical solutions and advantages of the present invention more clearly understood. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] refer to Figure 1 The construction method of the aluminum alloy formwork system for residential buildings according to the exemplary embodiment of the present invention comprises the following steps: Step 1: Check the lines: According to the architectural design plan, check the axis and wall line projected by the wall to ensure that the axis and wall line meet the construction requirements.

[0045] During the line inspection process, visually check whether the wall reinforcement is within the wall line and ensure that the wall reinforcement meets the requirements for the thickness of the wall reinforcement protective layer. If the requirements are not met, bend or cut off the wall reinforcement that exceeds the thickness range of the wall reinforcement protective layer. Use a spirit level to measure whether the elevation of the construction layer is within the control range. When the elevation exceeds the design elevation by 10mm, level the wall so that the elevation of the construction layer meets the design requirements to facilitate the subsequent installation of the wall formwork system.

[0046] Step 2: Determine the vertical reference line of the wall and locate the wall corner; based on the verified wall line position, project the wall control line 150mm outside the wall line as the vertical positioning reference line of the wall; weld multiple 14mm locating bars perpendicular to the vertical steel bars of the wall on the vertical steel bars of the wall along the length direction of the wall steel bars. The length of the locating bars is the same as the width of the wall. The distance between the locating bars close to the floor and the designed floor is 30mm~50mm, and the distance between adjacent locating bars is 300mm~500mm; and weld one or more locating bars at both ends of the length direction of the wall steel bars.

[0047] Step 3: Install the wall formwork system and calibrate the verticality; the wall formwork system includes the wall side formwork 1, refer to Figure 2 , Figure 3 The installation process includes: on the wall reinforcement, multiple rows of internal supports 2 (using tension screws) are set along the height direction of the wall reinforcement. The distance between each row of internal supports 2 and the distance between adjacent rows of internal supports 2 are determined according to the design and construction requirements. The internal supports 2 are connected to the horizontal reinforcement of the wall or the vertical reinforcement of the wall, and are perpendicular to the wall line to ensure the flatness and verticality of the wall after construction; after the internal supports 2 are installed, the surface of the wall side formwork 1 is cleaned, and a release agent is applied to the panel surface of the wall side formwork 1 to facilitate subsequent demoulding; according to the wall control line, the wall side formwork 1 is installed piece by piece from both ends of the wall reinforcement to the middle; during the installation of the wall side formwork 1, the hose 3 and the cup head cover 4 are passed through the internal support 2, the hose 3 is connected to the wall reinforcement, the tension holes of the wall side formwork 1 and the internal support 2 are aligned, the internal support 2 is passed through the wall side formwork 1, and then the nut 5 is screwed into the internal support 2. The wall side formwork 1 is connected to the wall reinforcement by an adjustable diagonal support 6 and a plumb bob 7 (reference Figure 5) To adjust its verticality, one end of the adjustable diagonal brace 6 is detachably connected to the fixed plate on the floor or ground (the fixed plate is pre-buried in the concrete during the construction of the floor or ground), and the other end of the adjustable diagonal brace 6 is detachably connected to the back rib 15 of the wall side form 1; at the corner position of the wall side form 1, the plumb bob 7 falls freely, and observe whether the tip of the plumb bob 7 is aligned with the vertical reference line of the wall. If not, adjust the verticality of the wall side form 1 installation by rotating the adjustable diagonal brace 6 connected to the wall side form 1 until the tip of the plumb bob 7 is aligned with the vertical reference line of the wall. After the verticality of the wall side form 1 is corrected, adjust the nut 5 on the inner support 2 so that the nut 5 fixes the wall side form 1; the verticality of the wall side form 1 can also be corrected by a screw jack and an iron chain.

[0048] During the installation of the wall formwork system, an M18 tension screw 11 is used to connect the corners formed by the wall side formwork 1 to improve the integrity and stability of the connection of the wall side formwork 1 and prevent the formwork from deforming; Figure 6 When the tensioning screw rods 11 are connected, angle irons 42 are respectively set on the back ribs 15 of the adjacent templates at the corner positions. After the tensioning screw rods 11 pass through the angle irons 42, they are fixed by nuts 5. At the elevator shaft, for the wall side molds 1 close to each other on both sides of the elevator shaft opening, 50 mm * 50 mm angle steel support rods 8 are used for support (reference Fig.17 ), for the wall side formwork 1 at the elevator shaft opening, the back rib 15 is pulled through at the opening position to improve the stability of the wall formwork system installation at the elevator shaft.

[0049] For the part where the upper building structure needs to be built, after the wall side form 1 is installed, K plate 9 is installed on the top of the wall side form 1 outside the building structure, and the bottom of K plate 9 is connected to the wall side form 1 (refer to Figure 2 , Figure 4 ), a C groove 10 is installed on the top of the wall side mold 1 on the inner side of the building structure, and a back rib 15 is arranged on the outer side of the K plate 9 (reference Figure 2 , Figure 7 ), the back rib 15 is made of double steel pipes, and the K-plate 9 and the C-slot 10 are connected by the tension screw 11; after the K-plate 9 is installed, its top height extends out of the preset floor top height of 50mm to facilitate the pouring of the floor concrete. The inner side of the K-plate 9 is fixed with a conical screw 12, which is embedded in the floor concrete. After the wall side formwork 1 under the K-plate 9 is removed later, the conical screw 12 can make the K-plate 9 stably fit on the surface of the floor wall, so as to facilitate the continued installation of the wall side formwork 1 on the K-plate 9. A 26mm long strip hole is opened on the K-plate 9, which is convenient for adjusting the K-plate 9 after the floor concrete is poured, ensuring the verticality of the K-plate 9 and the verticality of the building structure after construction; after the K-plate 9 is installed, check the verticality of the K-plate 9. When it is necessary to adjust the installation elevation of the K-plate 9, loosen the fastening bolts counterclockwise, adjust the K-plate 9 to the preset elevation, and tighten the fastening bolts.

[0050] During the installation of the wall formwork system, at the preset column position, the wall side formwork 1 and the column formwork 19 can be installed at the same time (the wall side formwork can also be installed first, and then the column formwork). At the junction of the wall and the column, the wall side formwork 1 extends from one side of the column to the other side of the column. The corner positions of the wall side formwork 1 and the column formwork 19 are connected by the external angle formwork 18 and the internal angle formwork 17 respectively, and the junction positions of the column formworks 19 and the column formworks 19 are connected by the internal angle formwork 17 (refer to Fig. 22 ).

[0051] Step 4: Install the beam formwork system and calibrate it; according to the design drawings of the floor beam body, install the beam formwork system at the preset positions. The beam formwork system includes a beam bottom formwork 13 and a beam side formwork 14. Figure 8 , Fig. 9 The overall shapes of the beam bottom formwork 13 and the beam side formwork 14 are both rectangular structures. The length of the beam bottom formwork 13 is 1.1 m ~1.5m, and the width is 250mm~350mm. Along the length direction of the beam bottom formwork 13, flanges of 65mm~80mm are arranged on both sides of the beam bottom formwork 13; the length of the beam side formwork 14 is 1.1 m ~1.5m, and the width is 400mm. A back rib is arranged in the length direction of the beam side formwork 14, and the distance between the back rib and the bottom of the beam side formwork 14 is 250mm.

[0052] The installation process of the beam formwork system includes: transporting the beam bottom formwork 13 and the beam side formwork 14 to the preset installation position, installing one or more rows of beam bottom formwork supports 16 along the length direction of the beam body, and in each row of beam bottom formwork supports 16, the spacing between adjacent beam bottom formwork supports 16 is not greater than 1.2m; the beam bottom formwork supports 16 use adjustable steel pipe supports, and the beam bottom formwork supports 16 are connected to the early removal heads. The turnover efficiency can be improved by supporting the beam bottom formwork 13 through the beam bottom formwork supports 16 and the early removal heads; after the beam bottom formwork supports 16 are installed, the height of the early removal heads on them is adjusted, and then the beam bottom formwork 13 and the early removal heads are connected. Dismantle the head connection. After the connection, correct the verticality of the beam bottom formwork 13, and then install the beam side formwork 14 on both sides of the beam bottom formwork 13. The opposite beam side formworks 14 are connected by tension screws, and the distance between adjacent tension screws is not more than 800mm; the joints between the beam bottom formwork 13 and the beam side formwork 14 are connected by the internal angle formwork 17, and the beam side formwork 14 and the floor formwork 20 are connected by the external angle formwork 18; the connection position of the beam side formwork 14 and the wall side formwork 1 (or column formwork 19) is locked by pins to ensure the stability of the connection between the beam side formwork 14 and the wall side formwork 1.

[0053] Step 5: Install and calibrate the floor formwork system; the floor formwork system includes the floor formwork 20 and the floor keel 21, refer to Fig.10 The overall shape of the floor formwork 20 is a rectangular structure, with a length of 1.1 m ~ 1.5 m, a width of 400 mm, a panel thickness of 4 ~ 6 mm (the length and width can be adjusted according to actual conditions), and the floor keel 21 is 100 mm wide.

[0054] The installation process of the floor formwork system includes: pre-assembling the floor formwork system on site according to the design drawings of the floor formwork system. After the pre-assembly meets the requirements, the components of the floor formwork system are transported to the construction site; after checking that the tips of all plumb bobbins 7 are aligned with the vertical reference line of the wall, the floor keel 21 is installed. When installing the floor keel 21, the adjustable single support top 22 is used for leveling (refer to Figure 8 ), so that the floor keel remains horizontal, and then calibrate the diagonal of the floor formwork 20. After the calibration is correct, install the floor formwork 20. During the installation process, the floor formwork 20 is arranged in parallel piece by piece. The floor formwork 20 is first temporarily fixed with pins. After the installation of the floor formwork 20 of each unit is completed, use a level to measure its flatness and the installation elevation of the corresponding layer. When the installation of the floor formwork 20 deviates, use the adjustable single support top 22 to correct it. After the flatness of the floor formwork 20 of the corresponding layer and the installation elevation deviation meet the requirements, use the pins to tighten the floor formwork 20. After the flatness of each unit's floor formwork 20 and the installation elevation of the corresponding layer are calibrated, the flatness and installation elevation of the floor formwork 20 of the entire floor are checked to ensure the quality of floor construction. Reference Fig.23 , Fig.24 The adjustable single-support top includes an inner tube 39 and an outer tube 40, one end of the inner tube 39 is used to install the early disassembly head, and the other end of the inner tube 39 is embedded in the outer tube 40 from one end of the outer tube 40, and the other end of the outer tube 40 is used to fix the adjustable single-support top on the ground or floor; a plurality of adjustment holes are arranged in the length direction of the inner tube 39, a threaded adjustment section is arranged on the outer tube 40, and an adjustment groove is arranged on the threaded adjustment section. After the inner tube 39 is embedded in the outer tube 40, the inner tube 39 and the outer tube 40 can be connected by using a pin to pass through the adjustment groove and the adjustment section at the same time.

[0055] The floor formwork 20 is connected to the wall side formwork 1 through the wall top side formwork and the corner formwork (C groove), and the floor formwork 20 is connected to the beam side formwork 14 through the beam corner formwork (male corner formwork); before installing the wall top side formwork and the corner formwork, a release agent is applied to the contact surfaces of the wall top side formwork and the corner formwork with the concrete respectively, and when the wall top side formwork and the corner formwork are connected to the wall side formwork 1, pins are inserted from top to bottom to prevent the pins from falling off during concrete pouring; after the wall top side formwork and the corner formwork are installed, the floor formwork 20 is installed at the wall corner position; at the connection position between the floor formwork 20 and the floor beam body, the beam side formwork 14 and the beam corner formwork can also support the floor formwork 20 to ensure the stability of the floor formwork 20.

[0056] During the installation of the floor formwork 20, the installers are provided with a 1.5~2m high climbing stool 23, refer to Fig.11 , Fig.12The overall structure of the frame 231 of the climbing stool 23 is an isosceles step structure. One or more cross bars 233 are arranged between two adjacent legs 232 in the width direction of the frame 231 to ensure the structural strength of the frame 231 and facilitate the installation personnel to climb up and down the climbing stool 23. The two opposite cross bars are also connected by a reinforcing rod. A support rod 234 and a 1.2*0.3m steel grid 235 are arranged on the top of the frame 231. The steel grid 235 is fixedly connected to the frame 231, and the support rod 234 supports the frame 231 and the steel grid 235; when installing the floor formwork 20, the installer stands on the steel grid 235 of the climbing stool 23 to install the floor formwork 20; an inclined rod is also arranged between the support rod 234 and the legs to further strengthen the structural strength of the climbing stool 23.

[0057] During the installation of the floor formwork 20, the loading port formwork 25 is installed at the preset position (refer to Fig.13 , Fig.14 ), forming a feeding port 24, after the later demoulding, it is convenient for the template, back rib 15, support and other structures to be transferred to the upper layer through the feeding port 24 for use, thereby improving the turnover efficiency of the template and supporting facilities. The number of feeding ports 24 is determined according to the construction progress and floor area. The cross-sectional shape of the feeding port 24 is a trapezoidal structure. Fig.14 , the top width is wider than the bottom width, the top cross-sectional shape of the feeding port 24 is rectangular, and its size is 200mm×800mm; the feeding port template 25 can be an integral trapezoidal platform structure, or a plane structure with a trapezoidal cross-section. When it is a plane structure, multiple feeding port templates 25 are assembled into a trapezoidal platform structure; during the installation of the feeding port template 25, the bottom of each feeding port template 25 is bolted to the floor template 20, and the adjacent feeding port templates 25 are connected by bolts, and the joints of the adjacent feeding port templates 25 are sealed with adhesive strips; in the height direction of the feeding port template 25, the feeding port template 25 is connected to the floor slab steel bar 26 to ensure the stability of the feeding port template 25, to avoid deformation of the feeding port template 25 during the pouring of the floor slab concrete, which affects the transmission of the later template and supporting facilities; the feeding port template During the connection process between the floor slab reinforcement 25 and the floor slab reinforcement 26, the floor slab reinforcement 26 can be passed through the loading port template 25, and the stop block is filled at the connection position of the floor slab reinforcement 26 and the loading port template 25. After the floor slab reinforcement 26 passes through the loading port template 25, support ribs 27 (rebars, steel nails, etc.) are arranged at the position of the floor slab reinforcement 26 close to the panel of the loading port template 25, and the support ribs 27 are welded to the floor slab reinforcement 26. The support ribs 27 support the loading port template 25, and then a loading port support 28 (angle steel or steel pipe support) is arranged between the relative loading port templates 25 to prevent the loading port template 25 from deforming during the pouring of floor slab concrete; the floor slab reinforcement 26 passes through the loading port template 25, and when the loading port 24 is blocked in the later stage, the floor slab reinforcement 26 extending out of the loading port template 25 can also improve the structural strength of the floor at the position of the loading port 24.

[0058] During the installation of the floor formwork system, when the floor adopts a structure combining prefabricated floor slab 41 and cast-in-place floor slab, a floor panel 29 and a supporting keel (refer to Fig.15 ), the opposite ends of the floor panel 29 extend out of the edge of the prefabricated floor slab 41 by 50 to 150 mm respectively.

[0059] Step 6: Pour the wall concrete, beam concrete, column concrete and floor concrete to connect the wall, beam, column and floor into an integral structure. Before pouring concrete, check whether each formwork is fastened in place, and fill the bottom of the wall bottom formwork and the wall end formwork with plain concrete to prevent leakage during concrete pouring. During the pouring of wall concrete, beam concrete and floor concrete, spread the pouring from the middle to the surrounding areas to prevent the overall displacement of each formwork and affect the construction quality; the wall concrete and column concrete are poured in multiple times (2~3 times), the time interval between each pouring is 4~6h, the height of each pouring does not exceed 2m, and the vibrating process is uniform to ensure the pouring quality; during the concrete pouring process, support the rubber pad under the pump pipe on the floor to prevent the vibration of the pump pipe from affecting the pouring effect. When using a vertical pump pipe for pouring, fix the vertical pump pipe to avoid contact between the vertical pump pipe and the formwork. After the floor concrete is poured, measure the horizontality at the top of K-plate 9 to prevent K-plate 9 from deviating from the center line of the building structure and ensure the quality of the building structure after construction. Before pouring the floor slab concrete, the floor slab reinforcement bars 26 are tied onto the floor formwork 20 to ensure the structural strength of the floor slab.

[0060] Step 7: dismantle the wall formwork system, beam formwork system and floor formwork system, and transfer the dismantled wall formwork system, beam formwork system and floor formwork system to the upper building construction through the loading port 24.

[0061] During the formwork removal process, for the floor formwork 20, the floor formwork 20 can be removed only when the span of the floor formwork 20 is not less than 2m and the concrete strength of the floor slab is not less than 50% of the design strength; when the span of the floor formwork 20 is greater than 2m and not greater than 8m, the floor slab concrete strength is not less than 75% of the design strength, the floor formwork 20 can be removed; for the beam bottom formwork 13, when the span of the beam bottom formwork 13 is not greater than 8m, the concrete strength of the beam body is not less than 75% of the design strength, the beam bottom formwork 13 can be removed; when the span of the beam bottom formwork 13 is greater than 8m, the concrete strength of the beam body is not less than 100% of the design strength, the beam bottom formwork 13 can be removed.

[0062] During the process of dismantling the wall formwork system, the wall formwork system can be dismantled 24 hours after the wall concrete is poured, so as to avoid premature dismantling and causing the wall concrete to stick to the formwork, which will affect the wall quality. During the process of dismantling the wall side formwork 1, it is dismantled from both sides of the wall to the middle. The beam formwork system is dismantled before the floor formwork system. During the process of dismantling the floor formwork system, it is dismantled 36 hours after the floor slab concrete is poured (the specific dismantling time is determined according to the construction situation); for each floor formwork 20, first drag the formwork manually, then remove the pins, and when lowering the floor formwork 20, lower it slowly and gently; for the floor formwork 20 of each unit, when the first formwork is placed on the support opening of the wall top side formwork, first remove the adjacent formwork, then remove the pins and wedges of the floor formwork 20 to be dismantled, and use the demolding tool to separate the adjacent formworks; when dismantling the floor formwork 20 on both sides of the wall, first remove the wall top side formwork, and then remove the floor formwork 20. When removing the floor formwork 20 and the beam bottom formwork 13, avoid touching the adjustable single support top 22 and the adjustable steel pipe support 31, and avoid returning to the top after removing the adjustable single support top 22 and the adjustable steel pipe support 31. After the wall formwork system, beam formwork system and floor formwork system are removed, use a scraper and a wire brush to clean each formwork panel to ensure the turnover of each formwork.

[0063] After the template is transferred through the loading port 24, a hole filling plate 30 is arranged at the bottom of the loading port 24 (refer to Fig.16 ), the hole-filling plate 30 is supported by a plurality of adjustable steel pipe supports 31, and then the reinforcing steel bars are used at the position of the feeding port 24 to connect the floor slab steel bars 26 around the feeding port 24, and the concrete is poured to block the feeding port 24, so that the floor slab forms an integral structure. During the construction of the upper structure, when the concrete strength of the constructed floor slab reaches the weight that can support the formwork, support and newly poured concrete of the upper layer, the support of the constructed layer is removed and the construction of the upper structure is carried out; the pillars of the upper structure and the pillars of the constructed layer are on the same vertical axis.

[0064] In the above construction process, for the parts with structural changes, the combination of aluminum and wood formwork is used for construction. On the basis of standard aluminum alloy formwork, wood formwork is used as the adjustment structure, which can not only meet the requirements of flexible construction, but also reduce the cost of using aluminum alloy formwork. Fig.18, at the receiving position of the floor, when a wooden formwork 32 is set on the outer surface of the constructed floor, and the wall of the new floor adopts an aluminum alloy formwork, a locking screw 43 is pre-embedded on the floor slab of the constructed floor, and the locking screw 43 extends out of the wall. After the wall side formwork 1 of the wall of the new floor is installed, a 14mm thick supplementary formwork 33 (using a wooden formwork) is set on the surface of the wooden formwork 32. The supplementary formwork 33 is partially fitted with the wall side formwork 1 and partially fitted with the wooden formwork 32. Then, a 40mm*40mm wooden square 34 is set on the surface of the supplementary formwork 33. After the end plate 35 is set on the surface of the wooden square 34, a steel pipe 36 with a diameter of 4.8mm is set on the surface of the end plate 35. The steel pipe 36 is connected to the locking screw 43 through a nut 5 (the locking screw 43 passes through the gap between the two steel pipes) to reinforce the joint between the wall side formwork 1 and the wooden formwork 32 to prevent the wooden formwork 32 from being damaged during the construction of the wall of the new floor. Reference Fig.19 In the plane part, when the aluminum alloy formwork and the wooden formwork 32 are to be connected, the panel surface of the adjustment formwork 44 (using an aluminum alloy formwork, whose cross-section shape is U-shaped and whose size can be adjusted according to installation needs) is aligned with the panel surface of the wooden formwork 32, and then a wooden square 34 is set on the outer side of the wooden formwork 32 (the surface away from the casting space formed by the wooden formwork), and a wooden formwork strip 37 is set on the wooden square 34, and the wooden square 34 and the wooden formwork strip 37 form a groove, and one connecting end of the adjustment formwork 44 is embedded in the groove formed by the wooden square 34 and the wooden formwork strip 37, and is connected to the wooden square 34 through a connecting screw, and the other connecting end of the adjustment formwork 44 can be connected to other standard aluminum alloy formworks. Reference Fig. 20 In the part where the beam structure changes, when the height of the beam is high and the standard aluminum alloy template manufactured by the manufacturer cannot meet the installation requirements of the beam side template, a structural form combining the adjustment template 44 and the wooden template 32 can be adopted. The adjustment template 44 and the wooden template 32 are both used as adjustment sections. After the panel surface of the wooden template 32 is flush with the panel surface of the adjustment template 44, wooden squares 34 are set on the outer side of the wooden template 32. Two groups of wooden squares 34 are respectively set at the top and bottom of the wooden template 32. The wooden squares 34 at the top of the wooden template 32 are bolted to one connecting end of the adjustment template 44, and the wooden squares 34 at the bottom of the wooden template 32 are bolted to the beam bottom template 13. The other connecting end of the adjustment template 44 is welded or bolted to the C groove 10. Reference Fig.21 When the width of the beam body is wider and the standard aluminum alloy formwork manufactured by the manufacturer cannot meet the installation requirements of the beam bottom formwork, a wooden formwork 32 is set on one side or both sides of the beam bottom formwork as an adjustment section, and a wooden square 34 is set on the outer surface of the wooden formwork 32. The wooden square 34 on the wooden formwork 32 is bolted to a connecting end of the adjustment formwork 44 on the side of the beam body.

[0065] The above is only a detailed description of the specific implementation of the present invention, rather than a limitation of the present invention. Various substitutions, modifications and improvements made by those skilled in the relevant art without departing from the principle and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction method for an aluminum alloy formwork system for residential buildings, characterized in that: The following steps are involved: Step 1: Check the lines: According to the architectural design plan, check the axis and wall line of the wall projection to ensure that the axis and wall line meet the construction requirements; Step 2: Determine the vertical reference line of the wall and locate the corner; Step 3: Install the wall formwork system and calibrate the verticality; Step 4: Install the beam formwork system and calibrate it; Step 5: Install the floor formwork system and calibrate it; Step 6: pouring wall concrete, beam concrete, column concrete and floor slab concrete to connect the wall, beam, column and floor slab into an integral structure; Step 7: dismantle the wall formwork system, beam formwork system and floor formwork system, and transfer the dismantled wall formwork system, beam formwork system and floor formwork system to the upper building construction through the loading port.

2. The construction method according to claim 1, characterized in that: In the step 2, the specific process of determining the vertical reference line of the wall and locating the wall corner includes: projecting the wall control line 150 mm outside the wall line as the vertical positioning reference line of the wall; welding a plurality of 14 mm Ø positioning bars perpendicular to the vertical reinforcement of the wall on the vertical reinforcement of the wall along the length direction of the reinforcement of the wall, and welding one or more positioning bars at both ends of the length direction of the reinforcement of the wall.

3. The construction method according to claim 1, characterized in that: The wall formwork system includes a wall end formwork and a wall side formwork. The installation process of the wall formwork system includes: arranging multiple rows of internal supports on the wall reinforcement along the height direction of the wall reinforcement; cleaning the surface of the wall formwork and applying a release agent on the panel surface of the wall formwork; and installing the wall formwork system piece by piece from both ends of the wall reinforcement to the middle according to the wall control line.

4. The construction method according to claim 3, characterized in that: The beam formwork system includes a beam bottom formwork and a beam side formwork, and the installation process of the beam formwork system includes: Transporting the beam bottom formwork and the beam side formwork to a preset installation position, installing one or more rows of beam bottom formwork supports along the length direction of the beam body, wherein the beam bottom formwork supports are connected to the early removal head; Adjust the height of the early removal head on the beam bottom formwork support, and then connect the beam bottom formwork and the early removal head; Correct the verticality of the beam bottom formwork, and then install the beam side formwork on both sides of the beam bottom formwork.

5. The construction method according to claim 1, characterized in that: The floor formwork system comprises a floor formwork and a floor keel. The installation process of the floor formwork system comprises: after checking that the tip of the plumb bob is aligned with the vertical reference line of the wall, the floor keel is installed. When installing the floor keel, an adjustable single-bracket top is used for leveling to keep the floor keel in a horizontal state, and then the diagonal line of the floor formwork is checked. After the check is correct, the floor formwork is installed. During the installation process, the floor formwork is arranged in parallel piece by piece. The floor formwork is first temporarily fixed with pins. After the installation of the floor formwork of each unit is completed, the level is used to measure its flatness and the installation elevation of the corresponding layer. When the installation of the floor formwork deviates, the adjustable single-bracket top is used for correction. After the flatness of the floor formwork of the corresponding layer and the deviation of the installation elevation meet the requirements, the pins are used to tighten the floor formwork. After the correction of the flatness of the floor formwork of each unit and the installation elevation of the corresponding layer is completed, the flatness and installation elevation of the floor formwork of the entire floor are checked.

6. The construction method according to claim 5, characterized in that: During the installation of the floor formwork, a 1.5-2m high climbing stool is provided. The overall structure of the climbing stool frame is an isosceles step structure. Support rods and steel grids are provided on the top of the frame, and the steel grids are fixedly connected to the frame.

7. The construction method according to claim 5, characterized in that: During the installation of the floor formwork, a loading port template is installed at a preset position to form a loading port; the cross-sectional shape of the loading port is a trapezoidal structure, the top width is wider than the bottom width, and the top cross-sectional shape of the loading port is a rectangle; the loading port template is a plane structure with a trapezoidal cross-section, and a plurality of loading port templates are assembled into a trapezoidal platform structure; during the installation of the loading port template, the bottom of each loading port template is bolted to the floor template, adjacent loading port templates are connected by bolts, and the joints of adjacent loading port templates are sealed with rubber strips; in the height direction of the loading port template, the loading port template is connected to the floor slab steel bars.

8. The construction method according to claim 7, characterized in that: During the connection process between the feeding port template and the floor slab steel bars, the floor slab steel bars are passed through the feeding port template, and stop blocks are filled at the connection positions of the floor slab steel bars and the feeding port template. After the floor slab steel bars pass through the feeding port template, support ribs are arranged at positions of the floor slab steel bars close to the feeding port template panel to support the feeding port template, and steel pipes or angle steel supports are arranged between the relative feeding port templates.

9. The construction method according to claim 1, characterized in that: In the step seven, after the template is transferred through the loading port, a patching plate is set at the bottom of the loading port, and the patching plate is supported by multiple adjustable steel pipes. Then, reinforcing steel bars are used at the loading port to connect the floor steel bars around the loading port, and concrete is poured to seal the loading port so that the floor forms an integral structure.

10. The construction method according to any one of claims 1 to 9, characterized in that: During the installation of the wall formwork system, beam formwork system and floor formwork system, a combination of aluminum and wood is used in the construction of locations where the structure changes.

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