Hole-opening-free construction method for wood formwork assembly

Abstract

The invention discloses a trepanning-free construction method for wood formwork assembly. The trepanning-free construction method comprises the following construction steps that S1, lofting and positioning are conducted; s2, bottom formwork installation, wherein a first formwork is transversely installed through a large spliced formwork; a vertical abutted seam reinforcing device is installed at the vertical abutted seam of the adjacent formworks; s3, installation of a transverse abutted seam reinforcing device, wherein the transverse abutted seam reinforcing device is installed at the transverse abutted seam of the formwork; s4, pre-installing the counter-pulling lead screw: pre-penetrating the counter-pulling lead screw into a preformed hole of square steel of the transverse abutted seam reinforcing device; s5, an upper formwork is installed, specifically, a second formwork continues to be installed and is tightly attached to the bottom abutted seam reinforcing device; s6, circulating construction is conducted, specifically, the steps S2 to S5 are repeated, and formworks are installed upwards layer by layer till the elevation of the beam bottom or the slab bottom is reached; and S7, overall reinforcement is conducted, specifically, the batten back edges and the main beams are installed, final reinforcement of the formwork system is completed, by adopting transverse and vertical abutted seam reinforcement devices, the mechanical property of the formwork abutted seam is effectively improved, formwork loss is reduced, and the construction technology is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and particularly relates to a construction method for assembling wooden formwork without drilling holes. Background Art

[0002] In the construction of large formwork for cast-in-place concrete stairs, the horizontal joint tie rod reinforcement process recommended in Article 5.2.3 of the "Safety Technical Code for Construction Formwork" JGJ162 - 2008 has the following technical defects:

[0003] Imbalance of mechanical system: The horizontal joints (1) are concentratedly arranged with φ14 tie rods (2), and the spacing is encrypted to 200 mm, while the spacing of the vertical tie rods (3) is expanded to 600 mm (the upper limit value of the specification is 400 mm). The measured elastic deformation (4) of the formwork at the horizontal joint reaches 1.8 - 2.5 mm (the allowable value ≤ 0.5 mm), resulting in the over-standard rate of the height difference (5) of the joints stipulated in Article 8.3.1 of the "Code for Acceptance of Construction Quality of Concrete Structures" GB50204 - 2015 reaching 73%;

[0004] Structural defect: In order to install the horizontal tie rod (2), a tie rod hole (6) with a diameter of 18 mm is forcibly opened at the edge of the formwork, and a stress concentration area (7) is formed around the hole. The flexural strength (8) of the wooden formwork is reduced by 42% (the measured value is reduced from 12 MPa to 7 MPa), and the slurry leakage rate (9) at the hole position after pouring reaches 15 - 20%;

[0005] Process redundancy: The current compensation measure uses a 40 mm × 50 mm short wooden strip (10) to cover the joint, which requires an additional 3 processes of drilling (11), cutting (12), and edge sealing (13). The material loss rate (14) of a single stair section is increased by 8%, but there is still a step difference of 0.8 - 1.2 mm (the standard value ≤ 0.5 mm) in the flatness of the concrete at the joint;

[0006] Deterioration of economy: The breakage rate (16) of the short wooden strip reaches 65% after 2 turns, increasing the comprehensive cost (17) of the formwork by 22% compared with the whole - board construction, and the labor cost of joint repair accounts for 35% of the total working hours (the industry - advanced value ≤ 15%).

[0007] Therefore, there is an urgent need for a construction method for assembling wooden formwork without drilling holes, which has the advantages of improving the mechanical properties at the formwork joints, reducing formwork loss, simplifying the construction process, and reducing the construction cost. Summary of the Invention

[0008] In view of this, the present invention provides a construction method for assembling wooden formwork without drilling holes, which has the advantages of improving the mechanical properties at the formwork joints, reducing formwork loss, simplifying the construction process, and reducing the construction cost.

[0009] A construction method for assembling wooden formwork without drilling holes provided by the present invention adopts the following technical solutions:

[0010] A construction method for assembling wooden formwork without drilling holes includes the following construction steps:

[0011] S1: Lofting and positioning: Loft on the formwork installation positions on both sides of the shear wall and pop out obvious marking lines;

[0012] S2: Installation of bottom formwork:

[0013] Adopt assembled large formwork to horizontally install the first formwork to ensure neat assembly;

[0014] Install a vertical joint reinforcement device at the vertical joint of adjacent formworks. The flange of the vertical joint reinforcement device faces outward and is fixed with fasteners;

[0015] S3: Installation of horizontal joint reinforcement device:

[0016] Install a horizontal joint reinforcement device at the horizontal joint of the formwork. The flange of the horizontal joint reinforcement device faces inward to ensure that the device is closely attached to the assembled large formwork;

[0017] S4: Pre-installation of tie rods: Pre-penetrate the tie rods into the reserved holes of the square steel of the horizontal joint reinforcement device;

[0018] S5: Installation of upper formwork:

[0019] Continue to install the second formwork, horizontally install it as a whole, closely attach to the bottom joint reinforcement device, and fill the locally uneven places with foam rubber strips;

[0020] S6: Circular construction: Repeat steps S2 to S5, layer by layer install the formwork upward until reaching the elevation of the beam bottom or slab bottom;

[0021] S7: Overall reinforcement: Install wooden square back ribs and main beams to complete the final reinforcement of the formwork system.

[0022] Optionally, the upper flange and lower flange of the horizontal reinforcement device are installed inside the joint of the assembled large formwork, and anti-slip tooth patterns are provided on the contact surface with the assembled large formwork to limit the displacement at the formwork joint.

[0023] Optionally, the upper flange and lower flange of the vertical reinforcement device are installed outside the joint of the assembled large formwork, and the outer edges of the upper flange and lower flange exceed the formwork joint line by 10 - 15 mm, and are anchored to the formwork side through the fixing parts penetrating the fixing holes.

[0024] Optionally, an L-shaped connecting angle code is provided at the joint intersection node of the horizontal reinforcement device and the vertical reinforcement device. The L-shaped connecting angle code is connected to the corresponding fixing holes of the upper flange and lower flange through bolts to form a three-dimensional reinforcement system.

[0025] Optionally, elastic sealing strips are adhesively bonded to the contact surfaces of the horizontal reinforcement device and the upper and lower flanges of the vertical reinforcement device with the assembled large formwork.

[0026] Optionally, a bushing is embedded in the perforation of the horizontal reinforcement device. The inner diameter of the bushing and the gap of the tension rod ≤ 0.5 mm. An annular protrusion is provided on the outer wall of the bushing for interference fit with the hole wall of the bottom plate to prevent concrete slurry from seeping in.

[0027] Optionally, the horizontal joint reinforcement device includes a horizontally arranged horizontal bottom plate, an upper flange provided at the top of the horizontal bottom plate, and a lower flange provided at the bottom of the horizontal bottom plate. Fixing holes are provided on the upper and lower flanges, and a perforation for the tension rod to pass through is provided on the horizontal bottom plate.

[0028] Optionally, the vertical joint reinforcement device includes a vertically arranged vertical bottom plate, an upper flange provided at the top of the vertical bottom plate, and a lower flange provided at the bottom of the horizontal bottom plate. Fixing holes are provided on the upper and lower flanges.

[0029] Optionally, the bottom plates of both the horizontal joint reinforcement device and the vertical joint reinforcement device are square steel.

[0030] In summary, the present invention includes at least one of the following beneficial technical effects: By adopting the horizontal and vertical joint reinforcement devices, the mechanical properties at the formwork joints are effectively improved, formwork loss is reduced, the construction process is simplified, the construction cost is reduced, and it has remarkable practicability and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 is the vertical formwork assembly reinforcement device of the embodiment of the present invention;

[0033] Figure 2 is the horizontal formwork assembly reinforcement device of the embodiment of the present invention;

[0034] Figure 3 is the sectional view of the reinforcement device of the embodiment of the present invention;

[0035] Figure 4 is the schematic diagram of horizontal assembly reinforcement of the embodiment of the present invention;

[0036] Figure 5 is the schematic diagram of vertical assembly reinforcement of the embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of the installation of template assembly reinforcement and decoration in an embodiment of the present invention.

[0038] Explanation of reference numerals: 1, square steel; 2, upper flange; 3, lower flange; 4, perforation; 5, fixing buckle; 6, horizontal template assembly reinforcement device; 7, vertical template assembly reinforcement device; 8, assembled large template; 9, shear wall; 10, tie rod. Specific embodiments

[0039] The following specific examples illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0040] The following Figure 1-6 Further detailed description of the present invention is made in conjunction with the

[0041] An embodiment of the present invention discloses a construction method for assembling wooden templates without opening holes.

[0042] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , a construction method for assembling wooden templates without opening holes, comprising the following construction steps:

[0043] S1: Lofting and positioning: Loft on the template installation positions on both sides of the shear wall 9 and pop obvious marking lines;

[0044] S2: Installation of bottom template:

[0045] Horizontally install the first template with the assembled large template 8 to ensure neat assembly;

[0046] Install a vertical joint reinforcement device at the vertical joint of adjacent templates. The flange of the vertical joint reinforcement device faces outward and is fixed with fasteners;

[0047] S3: Installation of horizontal joint reinforcement device:

[0048] Install a horizontal joint reinforcement device at the horizontal joint of the template. The flange of the horizontal joint reinforcement device faces inward to ensure that the device is closely attached to the assembled large template 8;

[0049] S4: Pre-installation of tie rod 10: Pre-penetrate the tie rod 10 into the reserved hole of the square steel 1 of the horizontal joint reinforcement device;

[0050] S5: Installation of the upper formwork:

[0051] Continue to install the second formwork. Install it horizontally as a whole, closely attach to the bottom joint reinforcement device, and fill the locally uneven parts with foam rubber strips.

[0052] S6: Circular construction: Repeat steps S2 to S5, install the formwork layer by layer upwards until reaching the elevation of the beam bottom or slab bottom.

[0053] S7: Overall reinforcement: Install the wooden backing bars and main beams to complete the final reinforcement of the formwork system.

[0054] In the lofting and positioning step, the popping of the marking lines helps to ensure the accuracy of formwork installation. During the installation of the bottom formwork, the use of the assembled large formwork 8 and the installation of the vertical joint reinforcement device help to improve the stability and integrity of the formwork. The installation of the horizontal joint reinforcement device further enhances the horizontal stability of the formwork. The pre-installation of the tie rods 10 provides convenience for the subsequent formwork fixation. During the installation of the upper formwork, the use of foam rubber strips helps to fill the locally uneven parts and improve the flatness of the formwork. The implementation of the circular construction step ensures the continuity and consistency of formwork installation. The overall reinforcement step finally completes the reinforcement of the formwork system and improves the construction quality.

[0055] The technical solution of the present application, through the design of no hole opening, avoids opening screw holes on the formwork, reduces the stress concentration area of the formwork, improves the bending strength of the formwork, and reduces the leakage rate of mortar. At the same time, through the installation of vertical and horizontal joint reinforcement devices, the overall stability of the formwork is enhanced, the elastic deformation of the formwork is reduced, thereby improving the construction quality of the concrete structure. Compared with the prior art, the technical solution of the present application reduces process redundancy, reduces the material loss rate and comprehensive cost, and improves the construction efficiency.

[0056] In this embodiment, the upper flange 2 and the lower flange 3 of the horizontal reinforcement device are installed inside the joint of the assembled large formwork 8, and anti-slip tooth patterns are provided on the contact surface with the assembled large formwork 8 for restricting the displacement at the formwork joint.

[0057] Specifically, the upper flange 2 and the lower flange 3 of the horizontal reinforcement device are installed inside the joint of the assembled large formwork 8. This installation method can effectively reduce the displacement at the formwork joint. By providing anti-slip tooth patterns on the contact surface of the assembled large formwork 8, the stability of the reinforcement device is further enhanced, preventing the formwork from sliding or displacing during construction. The design of the anti-slip tooth patterns can be adjusted according to actual needs. For example, the depth and spacing of the tooth patterns can be optimized according to the material of the formwork and the construction environment to ensure the best anti-slip effect.

[0058] As a preferred embodiment, the anti-slip tooth pattern can adopt a serrated or wavy design to increase the friction of the contact surface. In addition, the material of the anti-slip tooth pattern can be selected as a wear-resistant material that matches the template material to improve the service life of the reinforcement device. During actual construction, the setting of the anti-slip tooth pattern can be combined with the installation steps of the template. For example, when installing the horizontal reinforcement device, first align the upper flange 2 and the lower flange 3 with the joint position, and then fix them through fasteners to ensure that the anti-slip tooth pattern is in close contact with the template.

[0059] In the present invention, by installing the upper flange 2 and the lower flange 3 of the horizontal reinforcement device inside the joint of the assembled large template 8 and setting anti-slip tooth patterns on the contact surface, the problem of displacement at the template joint is effectively solved. Compared with the prior art, this solution not only improves the stability of the template joint, but also simplifies the construction process and reduces the construction quality problems caused by template displacement.

[0060] In this embodiment, the upper flange 2 and the lower flange 3 of the vertical reinforcement device are installed outside the joint of the assembled large template 8, and the outer edges of the upper flange 2 and the lower flange 3 extend 10 - 15 mm beyond the template joint line and are anchored to the side of the template through the fixing parts penetrating the fixing holes.

[0061] Specifically, the upper flange 2 and the lower flange 3 of the vertical reinforcement device are installed outside the joint of the assembled large template 8, and this design can effectively enhance the overall stability at the template joint. The outer edges of the upper flange 2 and the lower flange 3 extend 10 - 15 mm beyond the template joint line. The selection of this dimension range not only ensures the coverage range of the reinforcement device, but also avoids the excessive outer edge affecting the construction operation. By the fixing parts penetrating the fixing holes and anchoring to the side of the template, the firm connection between the reinforcement device and the template is ensured, preventing displacement or loosening during the construction process.

[0062] As a preferred embodiment, the fixing parts can adopt bolts or screws. These fixing parts have high strength and durability and can withstand various stresses during the construction process. In addition, the setting positions and quantities of the fixing holes can be adjusted according to the actual construction requirements to ensure a more uniform and stable connection between the reinforcement device and the template.

[0063] In the present invention, by installing the upper flange 2 and the lower flange 3 of the vertical reinforcement device outside the joint of the assembled large template 8, making their outer edges extend 10 - 15 mm beyond the template joint line, and anchoring to the side of the template through the fixing parts penetrating the fixing holes, the problems of easy displacement and loosening at the template joint are effectively solved. Compared with the prior art, this technical solution not only improves the overall stability at the template joint, but also simplifies the construction process, reduces the adjustment and repair work during the construction process, thereby improving the construction efficiency and quality.

[0064] In this embodiment, an L-shaped connecting angle is provided at the joint intersection of the horizontal reinforcement device and the vertical reinforcement device. The L-shaped connecting angle is fixed to the corresponding fixing holes of the upper flange 2 and the lower flange 3 through bolts to form a three-dimensional reinforcement system.

[0065] Specifically, the design of the L-shaped connecting angle enables the horizontal reinforcement device and the vertical reinforcement device to be firmly connected at the joint intersection. The L-shaped connecting angle is connected to the fixing holes of the upper flange 2 and the lower flange 3 through bolts, ensuring the stability of the connection points. This connection method not only enhances the rigidity of the overall structure but also avoids displacement and deformation at the joints. As a preferred implementation method, the L-shaped connecting angle can be made of high-strength steel to ensure its load-bearing capacity and durability. In addition, the size and shape of the L-shaped connecting angle can be adjusted according to actual construction requirements to adapt to different specifications of formwork joints.

[0066] The present invention effectively solves the connection problem between the horizontal reinforcement device and the vertical reinforcement device at the joint intersection by introducing the L-shaped connecting angle. This solution not only improves the stability of the formwork joints but also reduces the formwork deformation and concrete leakage caused by joint displacement during the construction process. Compared with the prior art, the technical solution of the present application simplifies the construction process and improves the construction efficiency while ensuring the construction quality.

[0067] In this embodiment, elastic sealing strips are adhesively bonded to the contact surfaces of the upper flange 2 and the lower flange 3 with the assembled large formwork 8. The elastic sealing strips can be made of rubber, silicone or other materials with elasticity and sealing performance, and their thickness and width can be adjusted according to actual requirements. The bonding method of the elastic sealing strips can be double-sided tape, hot melt adhesive or other adhesives to ensure their close fit with the formwork contact surface and prevent concrete slurry from seeping in.

[0068] Specifically, the setting of the elastic sealing strips can effectively prevent the leakage of concrete slurry from the joints during the pouring process, thereby improving the sealing performance of the formwork. Since the elastic sealing strips have a certain elasticity, they can adapt to the minor deformation of the formwork during the formwork assembly process to ensure the sealing effect at the joints. In addition, the installation of the elastic sealing strips is simple and does not require additional complex processes, reducing the construction procedures and improving the construction efficiency.

[0069] The present invention solves the problem of concrete slurry leakage at the joints in the prior art by adhesively bonding elastic sealing strips to the contact surfaces of the upper flange 2 and the lower flange 3 with the assembled large formwork 8, improving the sealing performance and construction quality of the formwork. Compared with the prior art, this solution has the advantages of simple structure, convenient installation and good sealing effect, and can effectively improve the overall efficiency of formwork construction and the quality of concrete pouring.

[0070] In this embodiment, a bushing is embedded in the perforation 4 of the transverse reinforcement device. The inner diameter of the bushing has a clearance of ≤0.5 mm with the tension rod 10. An annular protrusion is provided on the outer wall of the bushing for interference fit with the hole wall of the bottom plate to prevent concrete slurry from seeping in.

[0071] Specifically, the clearance between the inner diameter of the bushing and the tension rod 10 is controlled within 0.5 mm to ensure the stability and accuracy of the tension rod 10 in the hole. The outer wall of the bushing is designed with an annular protrusion, which forms an interference fit with the hole wall of the bottom plate, thus effectively preventing concrete slurry from seeping into the hole. As a preferred embodiment, the bushing can be made of wear-resistant and elastic material, such as polyurethane or rubber, to enhance its sealing performance and durability. In addition, the annular protrusion of the bushing can be designed into multiple ones to further improve the tightness of its fit with the hole wall.

[0072] In this regard, the technical solution of this application effectively solves the problem of concrete slurry seeping into the perforation 4 by embedding a bushing in the perforation 4, strictly controlling the clearance between the inner diameter of the bushing and the tension rod 10, and using the interference fit between the annular protrusion on the outer wall of the bushing and the hole wall of the bottom plate. Thereby, not only the accuracy and stability of formwork assembly are improved, but also the formwork damage and construction quality problems caused by slurry seepage are reduced. Compared with the prior art, this solution simplifies the construction process and reduces the maintenance cost while ensuring the construction quality.

[0073] In this embodiment, the transverse joint reinforcement device includes a horizontally arranged transverse bottom plate, an upper flange 2 provided at the top of the transverse bottom plate, and a lower flange 3 provided at the bottom of the transverse bottom plate. Fixing holes are provided on the upper flange 2 and the lower flange 3, and a perforation 4 for the tension rod 10 to pass through is provided on the transverse bottom plate.

[0074] Specifically, the transverse bottom plate is the basic structure of the transverse joint reinforcement device, and its horizontal arrangement ensures the overall stability of the reinforcement device. The upper flange 2 and the lower flange 3 are respectively provided at the top and bottom of the transverse bottom plate, and are connected to the formwork through the fixing holes, further enhancing the fixing effect of the reinforcement device. The perforation 4 provided on the transverse bottom plate is for the tension rod 10 to pass through, so that the tension rod 10 can effectively pass through the reinforcement device, thereby realizing the reinforcement of the formwork.

[0075] As a preferred embodiment, the transverse bottom plate can be made of square steel 1 material to improve its strength and durability. The fixing holes on the upper flange 2 and the lower flange 3 can be designed into multiple ones to meet the fixing requirements at different positions. The size of the perforation 4 can be precisely designed according to the diameter of the tension rod 10 to ensure that the tension rod 10 can pass through smoothly and be firmly fixed.

[0076] Through the setting of the horizontal bottom plate, the design of the fixing holes on the upper flange 2 and the lower flange 3, and the opening of the perforations 4, the present invention effectively solves the problems of mechanical system imbalance, structural defects, and technological redundancy existing in the horizontal joint reinforcement device in the prior art. This solution not only improves the reinforcement effect at the template joint, but also simplifies the construction process, reduces material loss and labor costs, and has significant technical advantages.

[0077] In this embodiment, the vertical joint reinforcement device includes a vertically arranged vertical bottom plate, an upper flange 2 provided at the top of the vertical bottom plate, and a lower flange 3 provided at the bottom of the vertical bottom plate. Fixing holes are provided on the upper flange 2 and the lower flange 3.

[0078] Specifically, the vertical bottom plate is a square steel 1 arranged vertically. The upper flange 2 and the lower flange 3 are respectively located at the top and bottom of the vertical bottom plate and are perpendicular to the vertical bottom plate. Fixing holes are provided on the upper flange 2 and the lower flange 3 for anchoring the reinforcement device to the side of the template through fixing members. The setting of the vertical bottom plate enables the reinforcement device to effectively support the vertical joint of the template and prevent displacement or deformation at the joint. The outer edges of the upper flange 2 and the lower flange 3 extend 10 - 15 mm beyond the template joint line, further enhancing the stability of the reinforcement device.

[0079] As a preferred embodiment, elastic sealing strips can be bonded to the contact surfaces of the upper flange 2 and the lower flange 3 of the vertical joint reinforcement device with the template to prevent concrete slurry from seeping into the joint. In addition, the bottom plate of the horizontal joint reinforcement device and the bottom plate of the vertical joint reinforcement device can be connected through an L-shaped connecting angle to form a three-dimensional reinforcement system, further improving the overall stability of the template.

[0080] Through the structural design of the vertical joint reinforcement device, the present invention effectively solves the problems of template deformation and displacement at the vertical joint in the prior art. The setting of the vertical bottom plate enables the reinforcement device to provide sufficient supporting force, and the design of the fixing holes on the upper flange 2 and the lower flange 3 ensures the firm connection between the reinforcement device and the template. Compared with the prior art, this solution not only simplifies the construction process, but also improves the stability and construction quality of the template, reducing the slurry leakage and deformation phenomena at the joint.

[0081] In this embodiment, the bottom plates of both the horizontal joint reinforcement device and the vertical joint reinforcement device are square steels 1. The use of square steels 1 can significantly improve the stiffness and stability of the reinforcement device, ensure uniform stress at the joint during the template assembly process, and reduce deformation and displacement. Specifically, the cross-sectional shape and size of the square steel 1 can be adjusted according to actual construction requirements, such as using different specifications of square steels 1 to adapt to templates of different thicknesses. In addition, the surface of the square steel 1 can be treated with rust prevention to extend its service life.

[0082] In the construction of large formwork for cast-in-place concrete stairs, there are problems such as imbalance of the mechanical system, structural defects, technological redundancy, and deterioration of economy in the reinforcement process of the horizontal joint tie rod 10. By using square steel 1 as the bottom plate of the horizontal joint reinforcement device and the vertical joint reinforcement device, these problems can be effectively solved. The high stiffness and stability of square steel 1 can reduce the elastic deformation at the formwork joint, ensuring that the height difference of the joint is within the allowable range. At the same time, the use of square steel 1 avoids opening screw holes at the edge of the formwork, reduces the formation of stress concentration areas, improves the flexural strength of the assembled large formwork 8, and reduces the slurry leakage rate at the hole positions. In addition, the use of square steel 1 simplifies the construction process, reduces additional drilling, cutting, and edge sealing processes, and reduces the material loss rate and the comprehensive cost of the formwork.

[0083] The present invention solves many problems in the prior art of the reinforcement process of the horizontal joint tie rod 10 by using square steel 1 as the bottom plate of the reinforcement device, and improves the construction quality and efficiency of formwork assembly.

[0084] In this embodiment, the bottom plates of both the horizontal joint reinforcement device and the vertical joint reinforcement device are square steel 1. As a common profile, square steel 1 has high strength and stiffness, can effectively support and fix the formwork, and ensure that the formwork remains stable during the construction process. The cross-sectional shape of square steel 1 is rectangular, and its size can be adjusted according to actual construction requirements to adapt to different thicknesses of formwork and reinforcement requirements. In addition, the surface of square steel 1 is smooth, which is convenient for installation and disassembly, reduces the frictional resistance during the construction process, and improves the construction efficiency.

[0085] Specifically, using square steel 1 as the bottom plates of the horizontal joint reinforcement device and the vertical joint reinforcement device can effectively solve the deformation problem caused by uneven stress at the formwork joint. The rigid structure of square steel 1 can evenly distribute the force, reduce the stress concentration at the joint, thereby reducing the elastic deformation of the formwork and ensuring that the flatness of the joint meets the specification requirements. At the same time, the installation method of square steel 1 is simple, and it can be quickly connected to the formwork through bolts or other fixing parts, reducing the construction process and improving the construction efficiency.

[0086] In this article, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation mode of the present invention. It should be noted that due to the limited nature of written expression and objectively existing infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.

Claims

1. A construction method for assembling wooden formwork without opening holes, characterized in that: The construction steps include: S1: Locating and positioning: Locate the installation positions of the large templates on both sides of the shear wall and pop up obvious marking lines; S2: Bottom template installation: Use a large assembled template to install the first template horizontally to ensure neat assembly; Install vertical joint reinforcement devices at the vertical joints of adjacent templates, with the flanges of the vertical joint reinforcement devices facing outwards and fixed with fasteners; S3: Installation of transverse joint reinforcement device: Install the transverse joint reinforcement device at the transverse joint of the template, with the flange of the transverse joint reinforcement device facing inward to ensure that the device is tightly attached to the large template; S4: Pre-installation of the drawing rod: insert the drawing rod into the reserved hole of the square steel of the transverse joint reinforcement device in advance; S5: Upper template installation: Continue to install the second template, using a whole sheet to install horizontally, close to the bottom joint reinforcement device, and use foam strips to fill the local unevenness; S6: Circular construction: repeat steps S2 to S5, and install the formwork layer by layer until the bottom elevation of the beam or the slab is reached; S7: Overall reinforcement: Install wooden back ribs and main beams to complete the final reinforcement of the formwork system.

2. The method for assembling wooden formwork without opening holes according to claim 1, characterized in that: The upper flange and the lower flange of the transverse reinforcement device are installed on the inner side of the joint of the assembled large template, and the contact surface with the assembled large template is provided with anti-slip teeth to limit the displacement at the template joint.

3. The method for assembling wooden formwork without opening holes according to claim 2, characterized in that: The upper flange and lower flange of the vertical reinforcement device are installed on the outside of the joints of the assembled large template. The outer edges of the upper flange and lower flange extend 10-15mm beyond the template joint line and are anchored to the side of the template through fixing parts passing through the fixing holes.

4. The method for assembling wooden formwork without opening holes according to claim 3, characterized in that: An L-shaped connection angle code is arranged at the joint intersection of the horizontal reinforcement device and the vertical reinforcement device. The L-shaped connection angle code is connected to the corresponding upper flange and lower flange fixing holes through bolts to form a three-dimensional reinforcement system.

5. The method for assembling wooden formwork without opening holes according to claim 4, characterized in that: The upper flange and the lower flange of the transverse reinforcement device and the vertical reinforcement device are bonded with elastic sealing strips on the contact surface with the assembled large template.

6. The method for assembling wooden formwork without opening holes according to claim 4, characterized in that: A bushing is embedded in the perforation of the transverse reinforcement device, the inner diameter of the bushing and the gap between the drawing rod is ≤0.5mm, and an annular protrusion is provided on the outer wall of the bushing to have an interference fit with the bottom plate hole wall to prevent concrete slurry from penetrating.

7. The method for assembling wooden formwork without opening holes according to claim 6, characterized in that: The transverse seam reinforcement device includes a transverse bottom plate arranged transversely, an upper flange arranged on the top of the transverse bottom plate, and a lower flange arranged on the bottom of the transverse bottom plate. Fixing holes are provided on the upper flange and the lower flange, and a through hole is provided on the transverse bottom plate for the drawing rod to pass through.

8. The method for assembling wooden formwork without opening holes according to claim 7, characterized in that: The vertical joint reinforcement device comprises a vertical bottom plate arranged vertically, an upper flange arranged at the top of the vertical bottom plate and a lower flange arranged at the bottom of the horizontal bottom plate, and fixing holes are opened on the upper flange and the lower flange.

9. The method for assembling wooden formwork without opening holes according to claim 8, characterized in that: The bottom plates of the transverse joint reinforcement device and the vertical joint reinforcement device are both square steels.

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