A tool-type formwork for a non-support system in a renovation project and a construction method thereof

Abstract

The invention relates to a tool formwork for a support-free system of a reconstruction project and a construction method thereof, and belongs to the field of construction engineering. The tool formwork for the support-free system of the reconstruction project has two sides of a crossbeam placed on an original structural cantilever plate, a U-shaped groove in the middle of the crossbeam is clamped at the position of a decorative column, and is connected and covered with a reverse small crossbeam by bolts, a screw is inserted between the crossbeam and the aluminum alloy, a nut is tightened at the bottom of the aluminum alloy formwork, concrete is poured between the crossbeam and the aluminum alloy formwork, a sleeve is sleeved around the screw, and the setting of the sleeve prevents the screw from being fixed by concrete pouring and can be recycled; the construction method of the tool formwork for the support-free system of a cantilevered part of the reconstruction project discloses a complete set of construction processes of the aluminum alloy formwork from material selection to construction and installation, and ensures that the aluminum alloy formwork is smoothly installed and used. At the same time, the later maintenance and preservation method of the aluminum alloy formwork is also disclosed, which can effectively extend the service life of the aluminum alloy formwork.

Description

Technical Field

[0001] The invention belongs to the field of building engineering construction, and in particular relates to a tool-type template for a non-supporting system of a reconstruction project and a construction method thereof. Background Art

[0002] In the cantilevered part of the house building, there are protruding cantilevers. Due to the use function and decoration needs, a concrete slab needs to be poured between the protruding cantilevers to make it flush with the protruding cantilevers. The pouring of the concrete slab is generally completed by using a pouring mold. In the prior art, there are many disadvantages in using traditional wooden formwork construction, such as the material cannot be recycled, large waste, slow template assembly, installation, reinforcement and removal are very inconvenient. In order to replace the wooden formwork construction, steel formwork or aluminum alloy formwork can also be used for construction, but the steel formwork and aluminum alloy formwork will be damaged and deformed during the long-term repeated disassembly, installation and recycling process, and can no longer be recycled. Considering that it is light and easy to carry and transport, the use range of aluminum alloy formwork is wider, but aluminum alloy formwork is more prone to deformation and damage than steel formwork. Summary of the invention

[0003] In order to overcome the problems existing in the background technology, the present invention discloses a tool formwork for a non-support system for a renovation project and a construction method thereof. The two sides of the crossbeam of the tool formwork for a non-support system for a renovation project are placed on the cantilever plate of the original structure, and the middle of the crossbeam is U-shaped. The groove is stuck in the position of the decorative column, and the screw is inserted between the beam and the aluminum alloy template through bolts to connect the reverse small beam. The nut is tightened at the bottom of the aluminum alloy template, and concrete is poured between the beam and the aluminum alloy template. A sleeve is sleeved around the screw. The setting of the sleeve prevents the screw from being fixed by the concrete pouring and can be recycled. The construction method of the tool-type template for the unsupported system of the renovation project discloses a complete construction process from material selection to construction and installation of the aluminum alloy template, which ensures the smooth installation and use of the aluminum alloy template. The later maintenance and preservation method of the aluminum alloy template can effectively extend the service life of the aluminum alloy template. The purpose of the present invention is to provide a construction template and a construction method that can be recycled and used multiple times and is suitable for renovation projects with completed main structures, which can effectively solve the problems of difficult construction, difficult layout and difficult reinforcement of traditional templates, reduce material waste, increase construction speed, extend the service life of the construction template, and save construction costs.

[0004] To achieve the above object, the present invention is implemented through the following technical solutions:

[0005] The tool-type formwork for the unsupported system of the transformation project mainly includes an aluminum alloy formwork, a screw, a sleeve, and a back rib. A beam is installed at the cantilevered part where the formwork needs to be installed, and pads are arranged at both ends of the beam. The beam consists of a beam body and a reverse small beam. The beam body and the reverse small beam are provided with U-shaped grooves, which are arranged relatively to each other and are covered on the decorative column. Before the aluminum alloy formwork is installed, a screw is inserted from the beam, and a sleeve is arranged on the screw. The sleeve is made of PVC material. Concrete is poured between the beam and the aluminum alloy formwork. The aluminum alloy formwork is divided into a wide side formwork, a wide bottom formwork, and an inner wide side formwork. A nut is arranged at the bottom of the wide bottom formwork for adjustment and tightening. The wide side formwork is connected to the wide bottom formwork through a positive angle formwork and a pin, and the inner wide side formwork is connected to the wide side formwork using a positive angle formwork and a pin. A back rib is arranged at the bottom of the aluminum alloy formwork, and the back rib is connected to the aluminum alloy formwork through a screw and a nut.

[0006] The construction method of the tool formwork for the unsupported system of the reconstruction project comprises the following steps:

[0007] 1) Aluminum alloy template production:

[0008] (1) An aluminum alloy composed of alloy elements such as manganese and magnesium is selected, and the aluminum alloy is extruded into an aluminum alloy template in one step, and reinforcing ribs and holes are set on the aluminum alloy template;

[0009] (2) The surface of the aluminum alloy template is anodized;

[0010] (3) The back ribs, screws and pins of the aluminum alloy formwork system are made of Q235B steel;

[0011] 2) Re-inspection of aluminum alloy formwork:

[0012] (1) Before the template is shipped, a trial assembly should be carried out. The aluminum alloy template for trial assembly should be fully pinned. The trial assembly must confirm that the pins are fully matched, the aluminum alloy template has no misalignment or excessive gaps, and the screw length meets the installation requirements;

[0013] (2) Aluminum alloy templates should be pickled and passivated before shipment;

[0014] (3) Check the qualified aluminum alloy formwork, number it, pack it and load it according to the installation sequence;

[0015] 3) Aluminum alloy formwork installation:

[0016] Installation process: construction preparation → measurement and layout → installation of keels → adjustment of keel height → installation of pins → installation of flat panels → adjustment of panel elevation → installation of pins → installation of side panels → installation of pins → pouring of concrete → maintenance;

[0017] 4) Care and maintenance:

[0018] (1) After the used aluminum alloy formwork and accessories are removed, the mortar on the formwork surface must be removed, and the deformed and damaged formwork and accessories must be reshaped and repaired;

[0019] (2) Weld cracks should be repaired, and aluminum alloy templates that are not in use should be coated with release agent and stacked according to specifications;

[0020] (3) When aluminum alloy formwork is stored indoors or in an open shed, the bottom of the formwork should be at least 100 mm above the ground;

[0021] Preferably, in step 1), the thinnest part of the aluminum alloy template is ≥4 mm, the steel back ribs generally adopt specifications of 60×40×3 mm or 50×30×3 mm, and the pins are galvanized pins.

[0022] Preferably, the compressive and tensile strengths of the aluminum alloy template material in step 1) are 150 MPa, and the shear strength is 85 MPa.

[0023] As a preferred embodiment: during the packaging process of the aluminum alloy templates manufactured in step 2), wooden blocks should be added between each bundle of aluminum alloy templates, the aluminum alloy templates and wooden blocks should be aligned up and down, and the bottom template should be padded at least 100 mm above the ground;

[0024] As a preferred embodiment: the key points of the construction process control in step 3) are that the keel height needs to be adjusted to ensure the correct elevation of the board surface; the keel of the cantilever board formwork needs to be removed after the concrete strength reaches 100%, and the concrete strength is measured by ultrasonic rebound method; the pins at the positive corners of the side panel must be fully driven; and the cantilever formwork is observed during the concrete pouring process.

[0025] Preferably, when the disassembled aluminum alloy formwork is stacked in the open air in step 4), the bottom surface of the aluminum alloy formwork is at least 200 mm above the ground, and the distance between the two supporting points and the two ends of the aluminum alloy formwork is no more than 1 / 6 of the length of the formwork.

[0026] Preferably, the sleeve is used in conjunction with the screw, the sleeve diameter is φ32mm×3.2mm, the outer diameter is 32mm, and the sleeve length has an allowable error of -1mm.

[0027] The beneficial effects of the present invention are as follows: the two sides of the crossbeam of the tool formwork for the unsupported system of the renovation project are placed on the original structural cantilever plate, the U-shaped groove in the middle of the crossbeam is stuck in the position of the decorative column, the crossbeam is connected and covered with a reverse small crossbeam by bolts, a screw is inserted between the crossbeam and the aluminum alloy, the nut is tightened at the bottom of the aluminum alloy formwork, concrete is poured between the crossbeam and the aluminum alloy formwork, and a sleeve is sleeved around the screw. The setting of the sleeve prevents the screw from being fixed by the concrete pouring and can be recycled; the construction method of the tool formwork for the unsupported system of the renovation project discloses a complete set of construction processes for the aluminum alloy formwork from material selection to construction and installation, while ensuring the smooth installation and use of the aluminum alloy formwork, it also discloses a later maintenance and preservation method for the aluminum alloy formwork, which can effectively extend the service life of the aluminum alloy formwork. The purpose of the present invention is to provide a construction formwork and a construction method thereof that can be recycled and used multiple times and is suitable for renovation projects where the main structure has been completed, which can effectively solve the problems of difficult construction, difficult arrangement and difficult reinforcement of traditional formworks, reduce material waste, increase construction speed, extend the service life of the construction formwork, and save construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 A top view of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the beam.

[0031] In the figure, 1-concrete slab, 2-cantilever plate, 3-crossbeam, 4-crossbeam body, 5-reverse small crossbeam, 6-U-shaped groove, 7-decorative column, 8-aluminum alloy formwork, 9-wide edge formwork, 10-wide bottom formwork, 11-inner wide edge formwork, 12-screw, 13-sleeve, 14-back rib, 15-pad. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objectives, technical solutions and beneficial effects clearer, the present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0033] As shown in the figure, the tool-type template for the renovation project without a support system mainly includes an aluminum alloy template 8, a screw 12, a sleeve 13, and a back rib 14. A beam 3 is installed at the cantilevered part where the template needs to be installed. Pads 15 are set at both ends of the beam 3. The beam 3 is composed of a beam body 4 and a reverse small beam 5. The beam body 4 and the reverse small beam 5 are provided with U-shaped grooves 6. The U-shaped grooves 6 are relatively arranged. The U-shaped grooves 6 are covered on the decorative columns 7. Before the aluminum alloy template 8 is installed, the screw 12 is inserted from the beam 3, and the screw 12 is covered with a sleeve Tube 13, the sleeve 13 is made of PVC material, concrete is poured between the crossbeam 3 and the aluminum alloy template 8, the aluminum alloy template 8 is divided into a wide side template 9, a wide bottom template 10, and an inner wide side template 11, a nut is set at the lower part of the wide bottom template 10 for adjustment and fastening, the wide side template 9 is connected to the wide bottom template 10 through a positive angle template and pins, the inner wide side template 11 is connected to the wide side template 9 by using a positive angle template and pins, a back rib 14 is set at the bottom of the aluminum alloy template 8, and the back rib 14 is connected to the aluminum alloy template 8 through a screw 12 and a nut.

[0034] The tool-type template for the unsupported system of the renovation project is built between the cantilever plates 2, and the two sides of the beam 3 are placed on the cantilever plates 2. The beam 3 is composed of a beam body 4 and a reverse small beam 5. The beam body 4 and the reverse small beam 5 are provided with U-shaped grooves 6. The U-shaped grooves 6 are arranged relatively. The U-shaped grooves 6 are clamped at the position of the decorative column 7 and connected and covered with the reverse small beam 5 by bolts 12. The screw 12 is inserted between the beam 3 and the aluminum alloy template 8. The nut is tightened at the bottom of the aluminum alloy template 8. The concrete is poured between the beam 3 and the aluminum alloy template 8. Concrete, a sleeve 13 is sleeved on the periphery of the screw 12, and the setting of the sleeve 13 prevents the screw 12 from being fixed by concrete pouring. The aluminum alloy template 8 is composed of a wide side template 9, a wide bottom template 10, and an inner wide side template 11. A nut is set at the bottom of the wide bottom template 10 for adjustment and tightening. The wide side template 9 is connected to the wide bottom template 10 through a positive angle template and a pin. The inner wide side template 11 is connected to the wide side template 9 by a positive angle template and a pin. The back rib 14 is connected to the aluminum alloy template 8 through a screw 12 and a nut, and can be recycled.

[0035] The purpose of the present invention is to provide a construction template and a construction method thereof which can be recycled and reused multiple times and is suitable for renovation projects whose main structures have been completed, which can effectively solve the problems of difficult construction, difficult layout and difficult reinforcement of traditional templates, reduce material waste, increase construction speed, extend the service life of the construction template, and save construction costs.

[0036] The construction method of the tool formwork for the unsupported system of the reconstruction project comprises the following steps:

[0037] 1) Aluminum alloy template production:

[0038] (1) Aluminum alloy composed of alloying elements such as manganese and magnesium is selected, which is a weak hardening material of type 6061-T6. The compressive and tensile strength of the template material is 150Mpa, and the shear strength is 85Mpa. The template material must meet the requirements of the specification. For specific requirements, refer to the table below;

[0039]

[0040] Note: Design strength value of aluminum alloy material (N / mm 2 )

[0041] Standard plate: aluminum alloy, the thinnest part of the template is ≥4mm, the aluminum alloy template needs to be extruded in one time, and the reinforcement ribs and holes are set according to the standard plate processing atlas.

[0042] (2) The surface of the aluminum profile is anodized and meets the AA15 grade in GB / T5237.2 "Aluminum Alloy Building Profiles";

[0043] (3) The back ribs, screws and pins of the aluminum alloy formwork system are made of Q235B steel, and the material should comply with the current national standards "Carbon Structural Steel" GB / T700 and "Low Alloy High Strength Structural Steel" GB / T1591;

[0044] (4) The back ribs generally adopt the specifications of 60×40×3mm or 50×30×3mm;

[0045] (5) The sleeve is made of PVC and is used in conjunction with the screw. The sleeve diameter is φ32mm×3.2mm, the outer diameter is 32mm, and the allowable error of the sleeve length is -1mm.

[0046] 2) Re-inspection of aluminum alloy formwork:

[0047] (1) After the template is produced, the pass rate of the single template should be 100% checked. The inspection indicators are as follows:

[0048] Inspection standard for single aluminum alloy formwork

[0049]

[0050] (2) Before the template is shipped, it should be assembled for trial (with all the pins inserted), and the following items should be checked in particular:

[0051] ①Whether the nails are complete;

[0052] ②Whether the construction methods of each node are consistent with the design plan;

[0053] ③Whether the template has problems such as misalignment or too large gaps;

[0054] ④Whether the length of the tension screw meets the requirements;

[0055] ⑤Whether the support and reinforcement system is fully configured.

[0056] (3) The aluminum alloy formworks that have passed the inspection shall be numbered, packaged and loaded according to the installation sequence. The numbers shall be clear and not faded. Pads shall be placed between each bundle of aluminum alloy formworks. The formworks and pads shall be aligned vertically. The bottom layer of formworks shall be padded at least 100mm above the ground. During transportation, the whole formworks shall be tied tightly to prevent shaking and friction.

[0057] (4) The pins are galvanized, and the large ends of the pins are drilled or bent for easy removal;

[0058] (5) The template should be pickled and passivated at the factory before shipment.

[0059] 3) Aluminum alloy formwork installation:

[0060] (1) Construction process: Construction preparation → Measurement and layout → Installation of keels → Adjustment of keel height → Installation of pins → Installation of flat panels → Adjustment of panel elevation → Installation of pins → Installation of side panels → Installation of pins → Concrete pouring → Maintenance

[0061] (2) Before installing the aluminum alloy formwork system, technical and safety briefings should be given to the construction team. The relevant construction operators must be familiar with the construction drawings, installation drawings of the formwork project, construction operation points and related safety requirements.

[0062] (3) The construction site should have reliable measurement control points or control lines that can meet the needs of formwork installation and inspection.

[0063] (5) Key points of construction control

[0064] ①The keel height needs to be adjusted to ensure the correct elevation of the board surface;

[0065] ② The formwork must be removed after the concrete strength reaches 100%, and the concrete strength is measured using the ultrasonic rebound method;

[0066] ③ The pins at the inner wide side formwork and the outer corner formwork of the wide side formwork must be fully driven to ensure that the formwork does not expand during concrete pouring and to ensure the cross-sectional size of the cantilever plate;

[0067] ④ During the concrete pouring process, observe the cantilever formwork to prevent it from sinking.

[0068] ⑤Inspection measures

[0069] a. The construction unit has a complete self-inspection mechanism. The aluminum alloy formwork team must appoint a full-time quality inspector. After the aluminum alloy formwork is assembled, the team will inspect it by themselves. If it is qualified, it will be reported to the construction personnel and supervisor for re-inspection. Only after it is qualified can concrete be poured.

[0070] b. During the concrete pouring process, a dedicated person should be arranged to conduct on-site measurements. If the formwork is found to be contaminated by concrete, it should be cleaned in time.

[0071] c. After the concrete pouring is completed, the supervision unit should organize the construction unit to conduct actual measurement of the structure, post the data on the wall, circle the unqualified data, summarize the reasons and polish or repair them in time.

[0072] 4) Care and maintenance:

[0073] (1) After the aluminum alloy formwork and accessories are removed, the mortar and other debris on the formwork surface should be removed in time; the deformed and damaged formwork and accessories should be reshaped and repaired in time; the repaired formwork and accessories should meet the requirements of the following table.

[0074]

[0075] (2) Weld cracks should be repaired, and the aluminum alloy formwork that is not in use should be coated with a release agent and stacked according to specifications;

[0076] (3) Aluminum alloy formwork and accessories whose maintenance quality does not meet the requirements in the table above of this technical standard shall not be used in the project;

[0077] (4) When aluminum alloy formwork is stored indoors or in an open shed, the bottom of the formwork should be padded at least 100 mm above the ground. When it is stacked outdoors, the ground should be flat and solid, with waterproofing and drainage measures. The bottom of the aluminum alloy formwork should be padded at least 200 mm above the ground, and the distance between the two supporting points and the two ends of the aluminum alloy formwork should not be greater than 1 / 6 of the length of the formwork.

[0078] Embodiment 1:

[0079] 1) Aluminum alloy template production:

[0080] (1) Extruding an aluminum alloy plate that meets the requirements into an aluminum alloy template, and setting reinforcing ribs and holes on the aluminum alloy template;

[0081] (2) The surface of the aluminum alloy template is anodized;

[0082] 2) Re-inspection of aluminum alloy formwork:

[0083] (1) Aluminum alloy is assembled as required;

[0084] (2) After the aluminum alloy template is pickled and passivated;

[0085] (3) Check the qualified aluminum alloy formwork, number it, pack it and load it according to the installation sequence;

[0086] 3) Install the re-inspected aluminum alloy formwork:

[0087] Installation process: construction preparation → measurement and layout → installation of keels → adjustment of keel height → installation of pins → installation of flat panels → adjustment of panel elevation → installation of pins → installation of side panels → installation of pins → pouring of concrete → maintenance;

[0088] 4) Care and maintenance:

[0089] (1) After the used aluminum alloy formwork and accessories are removed from the project location, the mortar on the surface of the aluminum alloy formwork shall be removed, and the deformed and damaged formwork and accessories shall be reshaped and repaired;

[0090] (2) Weld cracks should be repaired, and the aluminum alloy templates that are not in use should be coated with a release agent and stacked according to specifications and types. They can be stacked according to the size of the aluminum alloy templates;

[0091] (3) When aluminum alloy formwork is stored indoors, the bottom of the formwork should be at least 100 mm above the ground.

[0092] When the disassembled aluminum alloy formwork is piled in the open air, the bottom of the aluminum alloy formwork should be at least 200mm above the ground, and the distance between the two supporting points and the two ends of the aluminum alloy formwork should not be greater than 1 / 6 of the length of the formwork;

[0093] Example 2

[0094] 1) Aluminum alloy template production:

[0095] (1) Extruding an aluminum alloy plate that meets the requirements into an aluminum alloy template, and setting reinforcing ribs and holes on the aluminum alloy template;

[0096] (2) The surface of the aluminum alloy template is anodized;

[0097] 2) Re-inspection of aluminum alloy formwork:

[0098] (1) Aluminum alloy is assembled as required;

[0099] (2) After the aluminum alloy template is pickled and passivated;

[0100] (3) Check the qualified aluminum alloy formwork, number it, pack it and load it according to the installation sequence;

[0101] 3) Install the re-inspected aluminum alloy formwork:

[0102] Installation process: construction preparation → measurement and layout → installation of keels → adjustment of keel height → installation of pins → installation of flat panels → adjustment of panel elevation → installation of pins → installation of side panels → installation of pins → pouring of concrete → maintenance;

[0103] 4) Care and maintenance:

[0104] (1) After the used aluminum alloy formwork and accessories are removed from the project location, the mortar on the surface of the aluminum alloy formwork shall be removed, and the deformed and damaged formwork and accessories shall be reshaped and repaired;

[0105] (2) Weld cracks should be repaired, and the aluminum alloy templates that are not in use should be coated with a release agent and stacked according to specifications and types. They can be stacked according to the size of the aluminum alloy templates;

[0106] (3) The aluminum alloy formwork is stored outdoors, directly in contact with the ground, and is directly taken out when it is used again;

[0107] Example 3

[0108] 1) Aluminum alloy template production:

[0109] (1) Extruding an aluminum alloy plate that meets the requirements into an aluminum alloy template, and setting reinforcing ribs and holes on the aluminum alloy template;

[0110] (2) The surface of the aluminum alloy template is anodized;

[0111] 2) Re-inspection of aluminum alloy formwork:

[0112] (1) Aluminum alloy is assembled as required;

[0113] (2) After the aluminum alloy template is pickled and passivated;

[0114] (3) Check the qualified aluminum alloy formwork, number it, pack it and load it according to the installation sequence;

[0115] 3) Install the re-inspected aluminum alloy formwork:

[0116] Installation process: construction preparation → measurement and layout → installation of keels → adjustment of keel height → installation of pins → installation of flat panels → adjustment of panel elevation → installation of pins → installation of side panels → installation of pins → pouring of concrete → maintenance;

[0117] 4) Care and maintenance:

[0118] (1) After the used aluminum alloy formwork and accessories are removed from the project location, the mortar on the surface of the aluminum alloy formwork shall be removed, and the deformed and damaged formwork and accessories shall be reshaped and repaired;

[0119] (2) Weld cracks should be repaired, and the aluminum alloy templates that are not in use should be coated with a release agent and stacked according to specifications and types. They can be stacked according to the size of the aluminum alloy templates;

[0120] (3) When the aluminum alloy formwork is stored indoors, the bottom surface of the formwork should be padded 50mm above the ground. When the disassembled aluminum alloy formwork is piled in the open air, the bottom surface of the aluminum alloy formwork should be padded 100mm above the ground, and the distance between the two supporting points and the two ends of the aluminum alloy formwork should not be greater than 1 / 6 of the length of the formwork; Effect analysis:

[0121] The processing methods of the three embodiments are derived from the processing methods described in the specific implementation methods, and the difference lies in the storage method of the aluminum alloy template after use. The external characteristics and service life of the aluminum alloy template are compared and recorded within the same time range.

[0122]

[0123] The material selection, production, installation process, and later maintenance of the aluminum alloy formworks of the three embodiments are consistent. The difference lies in the preservation of the aluminum alloy formworks after disassembly and recycling. The preservation method recorded in Example 1 is more suitable for the preservation of the aluminum alloy formwork. The aluminum alloy formwork in Example 3 is placed closer to the ground, and the corrosion of the aluminum alloy formwork is more serious than that in Example 1. The corrosion of the aluminum alloy formwork in Example 2 is serious, which affects the subsequent construction operations and can no longer be used normally. Therefore, the storage conditions of Example 1 are more suitable.

[0124] The two sides of the crossbeam of the tool formwork for the unsupported system of the renovation project are placed on the original structural cantilever plate, the U-shaped groove in the middle of the crossbeam is stuck in the position of the decorative column, and the crossbeam is connected and covered with a reverse small crossbeam by bolts. The screw is inserted between the crossbeam and the aluminum alloy, the nut is tightened at the bottom of the aluminum alloy formwork, and concrete is poured between the crossbeam and the aluminum alloy formwork. The outer periphery of the screw is covered with a sleeve. The setting of the sleeve prevents the screw from being fixed by the concrete pouring and can be recycled. The construction method of the tool formwork for the unsupported system of the renovation project discloses a complete set of construction processes for the aluminum alloy formwork from material selection to construction and installation, while ensuring the smooth installation and use of the aluminum alloy formwork, it also discloses the later maintenance and preservation method of the aluminum alloy formwork, which can effectively extend the service life of the aluminum alloy formwork. The purpose of the present invention is to provide a recyclable and reusable formwork suitable for renovation projects with completed main structures, which can effectively solve the problems of difficult construction, difficult arrangement and difficult reinforcement of traditional formworks, reduce material waste, increase construction speed and save construction costs.

[0125] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A tool formwork for a non-support system for a renovation project, characterized in that: The tool-type formwork for the unsupported system of the transformation project includes: an aluminum alloy formwork, a screw, a sleeve, and a back rib. A crossbeam is installed at the cantilevered part where the formwork needs to be installed, and pads are arranged at both ends of the crossbeam. The crossbeam consists of a crossbeam body and a reverse small crossbeam. The crossbeam body and the reverse small crossbeam are provided with U-shaped grooves, which are arranged relatively to each other and are covered on the decorative column. Before the aluminum alloy formwork is installed, a screw is inserted from the crossbeam, and a sleeve is sleeved on the screw. The sleeve is made of PVC material. Concrete is poured between the crossbeam and the aluminum alloy formwork. The aluminum alloy formwork is divided into a wide side formwork, a wide bottom formwork, and an inner wide side formwork. A nut is arranged at the bottom of the wide bottom formwork for adjustment and tightening. The wide side formwork is connected to the wide bottom formwork through a positive angle formwork and a pin, and the inner wide side formwork is connected to the wide side formwork using a positive angle formwork and a pin. A back rib is arranged at the bottom of the aluminum alloy formwork, and the back rib is connected to the aluminum alloy formwork through a screw and a nut.

2. A construction method for a tool formwork for a non-support system in a renovation project according to claim 1, characterized in that: The construction method comprises the following steps: 1) Aluminum alloy template production: (1) The aluminum alloy is a weakly hardened material of type 6061-T6. The aluminum alloy is extruded into an aluminum alloy template in one step, and reinforcing ribs and holes are set on the aluminum alloy template; (2) The surface of the aluminum alloy template is anodized; (3) The back ribs, screws and pins of the aluminum alloy formwork system are made of Q235B steel; 2) Re-inspection of aluminum alloy formwork: (1) Before the template is shipped, a trial assembly is carried out. The aluminum alloy template assembled for trial assembly is fully pinned. The trial assembly must confirm that the pins are fully matched, the aluminum alloy template has no misalignment or excessive gaps, and the screw length meets the installation requirements; (2) Aluminum alloy templates should be pickled and passivated before shipment; (3) Check the qualified aluminum alloy formwork, number it, pack it and load it according to the installation sequence; 3) Aluminum alloy formwork installation: Installation process: construction preparation → measurement and layout → installation of keels → adjustment of keel height → installation of pins → installation of flat panels → adjustment of panel elevation → installation of pins → installation of side panels → installation of pins → pouring of concrete → maintenance; 4) Care and maintenance: (1) After the used aluminum alloy formwork and accessories are removed, the mortar on the surface of the formwork must be removed, and the deformed and damaged formwork and accessories must be reshaped and repaired; (2) The cracked welds on the template surface should be repaired. For aluminum alloy templates that are not in use, the plate surface should be coated with a release agent and stacked according to specifications and varieties; (3) When aluminum alloy formwork is stored indoors or in an open shed, the bottom of the formwork should be at least 100 mm above the ground.

3. A construction method of a tool formwork for a non-support system for a renovation project according to claim 2, characterized in that: In the step 1), the thinnest part of the aluminum alloy template is ≥4 mm, the back rib generally adopts a specification of 60×40×3 mm or 50×30×3 mm, and the pins are galvanized pins.

4. A construction method for a tool formwork for a non-support system in a renovation project according to claim 2, characterized in that: The compressive and tensile strengths of the aluminum alloy template material in step 1) are 150 MPa, and the shear strength is 85 MPa.

5. A construction method of a tool formwork for a non-support system for a renovation project according to claim 2, characterized in that: During the packaging process of the aluminum alloy templates produced in step 2), wooden blocks should be added between each bundle of aluminum alloy templates, the aluminum alloy templates and the wooden blocks should be aligned up and down, and the bottom template should be padded at least 100 mm above the ground.

6. A construction method of a tool formwork for a non-support system for a renovation project according to claim 2, characterized in that: The key points of the construction process control in step 3) are to adjust the keel height; the aluminum alloy formwork must be removed after the concrete strength reaches 100%, and the concrete strength is measured by ultrasonic rebound method; The pins at the positive corner formwork of the side formwork are fully driven; the cantilever formwork is observed during the concrete pouring process.

7. A construction method for a tool formwork for a non-support system in a renovation project according to claim 2, characterized in that: When the disassembled aluminum alloy template is stacked in the open air in step 4), the bottom surface of the aluminum alloy template is at least 200 mm above the ground, and the distance between the two supporting points and the two ends of the aluminum alloy template is no more than 1 / 6 of the length of the template.

8. According to claim 1, a tool formwork for a non-support system for a renovation project is characterized by: The sleeve is used in conjunction with the screw, the sleeve diameter is φ32mm×3.2mm, the outer diameter is 32mm, and the sleeve length has an allowable error of -1mm.

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