Combined construction joint formwork

Abstract

The utility model provides a combined disassembly-free construction joint template, which comprises a construction joint template, and the construction joint template is connected with a key groove template through iron wires to form an integrated disassembly-free construction joint template; the construction joint template comprises a template framework and a disassembly-free steel net, and the disassembly-free steel net is fixed on the template framework through the iron wires; the key groove template is a foldable and unfoldable template; the key groove template comprises a bottom die, side dies and a disassembly-free steel net of the key groove template, the four edges of the bottom die are respectively hinged with the side dies through hexagonal nuts, and the disassembly-free steel net of the key groove template is fixed on the key groove template through key groove template iron wires. The combined disassembly-free construction joint template effectively solves the problems of low construction joint processing efficiency, complex template installation and poor key groove forming quality in a high-density reinforcement environment, significantly improves the construction joint processing efficiency and quality, realizes continuous bay quick construction in the high-density reinforcement environment, and has the advantages of simple structure, convenient production, quick installation, economy, practicality, low cost, easy transportation and stacking.

Description

Technical Field

[0001] This utility model belongs to the field of formwork construction technology for water conservancy and hydropower projects, and in particular, it is a combined, non-removable construction joint formwork. Background Technology

[0002] In the construction of water conservancy and hydropower projects, the rock anchor beam of the underground powerhouse of the hydropower station serves as the core load-bearing structure, and the treatment of its construction joints directly affects the project quality and operational safety. Rock anchor beams are characterized by complex structures, high reinforcement ratios, and dense compartments, requiring the installation of keyways and the penetration of a large number of cross-joint connecting steel bars at the construction joints. This makes the treatment of construction joints a key link and technical challenge that restricts construction efficiency and structural performance.

[0003] Traditional construction joints typically use wooden or steel formwork, but this approach has several technical bottlenecks and shortcomings: dense reinforcement leads to narrow installation space for the formwork, and grout leakage is prone to occur at the connection between the keyway formwork and the main formwork, affecting the quality of the concrete bonding surface; traditional formwork only provides support and cannot integrate composite functions such as reinforcement positioning and keyway forming, making the installation process complex and cumbersome, requiring precise positioning and fixing, which increases the difficulty and error of construction; the traditional formwork removal and drilling process is time-consuming, making it difficult to meet the requirements of continuous skip-construction rapid construction, and the large size of the formwork is not conducive to transportation and stacking; during construction, due to the complexity of the procedures and the difficulty of operation, problems such as uneven treatment of construction joints and inadequate reinforcement insertion are prone to occur, affecting the overall structural performance.

[0004] To address the aforementioned issues, existing construction joint formwork and treatment methods are no longer adequate for the technical requirements of highly reinforced, large-volume concrete structures and efficient construction joint treatment. There is an urgent need for a structurally stable, easy-to-install, and highly efficient non-removable construction joint formwork to improve construction quality and efficiency. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a modular, non-removable construction joint template, which effectively solves the problems of low efficiency in construction joint treatment, complex template installation, and poor keyway forming quality in high-density reinforcement environments. It significantly improves the efficiency and quality of construction joint treatment, realizes continuous skip-construction rapid construction in high-density reinforcement environments, and has a simple structure, is easy to manufacture, quick to install, economical and practical, low cost, and easy to transport and stack.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A modular, non-removable construction joint template includes a construction joint template and a keyway template connected by wire to form an integral, non-removable construction joint template. The construction joint template includes a template frame and a non-removable steel mesh, which is fixed to the template frame by wire. The keyway template is a foldable and unfoldable template.

[0008] Preferably, the template frame consists of multiple horizontal connecting bars and a steel frame, with the horizontal connecting bars welded and fixed to the steel frame at predetermined spacing.

[0009] Preferably, the keyway template includes a bottom mold, side molds, and a keyway template non-removable steel mesh. The four sides of the bottom mold are respectively hinged to the side molds by hexagonal nuts, and the keyway template non-removable steel mesh is fixed by the keyway template wire.

[0010] Preferably, two hexagonal nuts are symmetrically welded near both ends of each side of the bottom mold to hinge with the side mold.

[0011] Preferably, the steel mesh that can be removed and the steel mesh that can be removed for the keyway template are both arranged on the same side of the template.

[0012] Preferably, the non-removable steel mesh is located inside the construction joint formwork, and the non-removable steel mesh of the keyway formwork is located inside the keyway formwork.

[0013] Preferably, the cross-joint reinforcing bars are welded and fixed to the horizontal connecting bars according to a predetermined spacing, which is used to position and fix the cross-joint reinforcing bars.

[0014] Preferably, the skeletons of the construction joint template and the keyway template are both made of welded steel bars.

[0015] Preferably, the mesh portion of the non-removable steel mesh and the keyway template is cut open to allow the cross-joint reinforcement and structural reinforcement to pass through.

[0016] The combined, non-removable construction joint template provided by this utility model has the following advantages:

[0017] 1. Reinforcing steel is used as the formwork skeleton. Waste materials from on-site steel processing plants are centrally processed and manufactured in the factory. The process is simple, the cost is low, and the materials are widely available.

[0018] 2. Construction joint templates and keyway templates can be manufactured and processed separately and then assembled on site, which speeds up the processing and manufacturing of templates and improves production efficiency. At the same time, keyway templates have the characteristic of being foldable and unfoldable, which can be unfolded and stored when not in use, greatly saving storage space and facilitating template management and transportation.

[0019] 3. The modular design integrates the construction joint formwork and the keyway formwork, greatly simplifying the installation process and reducing the difficulty of construction. At the same time, the non-removable design eliminates the traditional formwork removal and drilling procedures, shortens the construction cycle, improves the efficiency of continuous skip-construction construction, and enables rapid construction in high-density reinforcement environments.

[0020] 4. By cutting open the mesh portion of the non-removable steel mesh and keyway formwork, the reinforcing bars and structural reinforcing bars can pass smoothly through the formwork mesh without the need for on-site drilling. This ensures the continuity and strength of the reinforcing bar connection, effectively improves the quality of the construction joint and reduces the risk of structural defects.

[0021] 5. The integrated formwork system is constructed using a steel reinforcement frame and a non-removable steel mesh, which ensures that all parts of the formwork are tightly connected and the overall structure is strong. This effectively avoids local deformation or grout leakage caused by weak connections of separate formwork, and ensures the quality of the bonding surface between the old and new concrete construction joints.

[0022] 6. The horizontal connecting bars set in the steel reinforcement cage not only enhance the structural stability and provide reliable support for fixing the non-removable steel mesh, but also serve as template bars for cross-joint reinforcement, solving the problem of reinforcement positioning and fixing, and demonstrating the multi-functional characteristics of the formwork.

[0023] It effectively solves problems such as low efficiency in construction joint treatment, complex formwork installation, and poor keyway forming quality in high-density reinforcement environments. It significantly improves the efficiency and quality of construction joint treatment, and enables rapid continuous skip-construction construction in high-density reinforcement environments. It has a simple structure, is easy to manufacture, quick to install, economical and practical, low cost, and is easy to transport and stack. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a schematic cross-sectional view of the structure of this utility model.

[0027] Figure 3 This is a schematic diagram of the construction joint template structure of this utility model.

[0028] Figure 4 This is a schematic diagram of the construction joint template skeleton structure of this utility model.

[0029] Figure 5 This is a schematic diagram of the keyway template closing structure of this utility model.

[0030] Figure 6 This is a schematic diagram of the unfolded structure of the keyway template of this utility model.

[0031] Figure 7 This is a schematic diagram of the unfolded skeleton structure of the keyway template of this utility model. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1-7 As shown, a combined non-removable construction joint template includes a construction joint template 1, which is connected to a keyway template 2 by wire 3 to form an integral non-removable construction joint template; the construction joint template 1 includes a template frame 4 and a non-removable steel mesh 5, which is fixed to the template frame 4 by wire 3; the keyway template 2 is a foldable and unfoldable template.

[0034] The template frame 4 consists of multiple horizontal connecting bars 4-1 and a steel frame 4-2. The horizontal connecting bars 4-1 are welded and fixed to the steel frame 4-2 according to a predetermined row spacing.

[0035] The keyway template 2 includes a bottom mold 6, side molds 7 and a keyway template non-removable steel mesh 10. The four sides of the bottom mold 6 are respectively hinged to the side molds 7 by hexagonal nuts 8, and the keyway template non-removable steel mesh 10 is fixed by the keyway template wire 11.

[0036] Two hexagonal nuts 8 are symmetrically welded near the two ends of each side of the bottom mold 6, and are hinged to the side mold 7; the keyway template 2 has the characteristic of being foldable and unfoldable. When in use, the side mold 7 can be closed and fixed by iron wire 3 to form a trapezoidal structure; when not in use, it can be unfolded and stored to save storage space.

[0037] The steel mesh 5 and the keyway template steel mesh 10 are both arranged on the same side of the template.

[0038] The non-removable steel mesh 5 is located inside the construction joint template 1, and the non-removable steel mesh 10 of the keyway template is located inside the keyway template 2.

[0039] The cross-joint reinforcement 9 is welded and fixed to the horizontal connecting reinforcement 4-1 according to the predetermined spacing, which is used to position and fix the cross-joint reinforcement 9.

[0040] The frames of both the construction joint template 1 and the keyway template 2 are made of welded steel bars. They can be processed, transported, and stacked separately, and quickly assembled on site. Their shapes and sizes can be customized according to construction needs.

[0041] The mesh portions of the non-removable steel mesh 5 and the non-removable steel mesh 10 of the keyway template are cut open so that the cross-joint reinforcement 9 and the structural reinforcement can pass through.

[0042] The manufacturing and use process of this utility model is as follows:

[0043] a. Processing and manufacturing:

[0044] 1. Select steel bars that meet the strength requirements, cut the steel bars according to the design dimensions, and then process and manufacture construction joint template 1 and keyway template 2 respectively.

[0045] 2. According to the design structural dimensions, the cut steel bars are welded into a steel frame 4-2, and the horizontal connecting bars 4-1 are welded and fixed to the steel frame 4-2 according to the predetermined row spacing to form the template skeleton 4. It is connected to the non-removable steel mesh 5 by iron wire 3 to form the construction joint template 1.

[0046] 3. According to the design structural dimensions, weld the cut steel bars into bottom mold 6 and side mold 7. Weld hexagonal nuts 8 near the two ends of the four sides of the bottom mold 6 to hinge with the side mold 7. Connect the bottom mold 6 to the keyway template non-removable steel mesh 10 through the keyway template wire 11 to form the keyway template 2 in the unused unfolded state.

[0047] b. On-site use:

[0048] When in use, the construction joint template 1 and the keyway template 2 are transported to the construction site. First, the side template 7 is folded into place and then connected and fixed by the keyway template wire 11 to form the keyway template 2 in the closed state. Then, it is connected and fixed to the construction joint template 1 by the wire 3. Thus, the whole construction joint template system that does not need to be disassembled is formed.

[0049] Before use, the mesh portion of the non-removable steel mesh 5 and the non-removable steel mesh 10 of the keyway template is cut open so that the cross-joint reinforcement 9 and the structural reinforcement can pass through smoothly without the need for on-site drilling. The cross-joint reinforcement 9 is then welded and fixed to the horizontal connecting reinforcement 4-1 according to the predetermined spacing, which solves the problem of reinforcement positioning and fixing and demonstrates the multi-functional characteristics of the template.

[0050] When not in use, the construction joint template 1 and keyway template 2 are stacked separately. The keyway template 2 is unfolded and laid flat for storage, which greatly saves storage space.

[0051] After the template is installed, it is poured and formed as a whole with the concrete. The steel mesh 5 and the keyway template 10 are integrated with the concrete to form a rough interface, eliminating the need for formwork removal and joint treatment. This shortens the construction cycle, improves the efficiency of continuous skip-construction construction, and enables rapid construction in high-density reinforcement environments.

[0052] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The embodiments and features described in this application can be arbitrarily combined without conflict. The protection scope of this utility model should be defined as the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A modular, non-removable construction joint formwork, comprising a construction joint formwork (1), characterized in that: The construction joint template (1) and the keyway template (2) are connected by wire (3) to form an integral, non-removable construction joint template; the construction joint template (1) includes a template frame (4) and a non-removable steel mesh (5), and the non-removable steel mesh (5) is fixed to the template frame (4) by wire (3); the keyway template (2) is a foldable and unfoldable template.

2. The combined, non-removable construction joint formwork according to claim 1, characterized in that: The template frame (4) consists of multiple horizontal connecting bars (4-1) and a steel frame (4-2). The horizontal connecting bars (4-1) are welded and fixed to the steel frame (4-2) according to a predetermined row spacing.

3. The combined, non-removable construction joint formwork according to claim 1, characterized in that: The keyway template (2) includes a bottom mold (6), side molds (7) and a keyway template non-removable steel mesh (10). The four sides of the bottom mold (6) are respectively hinged to the side molds (7) by hexagonal nuts (8), and the keyway template non-removable steel mesh (10) is fixed by the keyway template wire (11).

4. The combined, non-removable construction joint formwork according to claim 3, characterized in that: Two hexagonal nuts (8) are symmetrically welded near the two ends of each side of the bottom mold (6) and are hinged to the side mold (7).

5. The combined, non-removable construction joint formwork according to claim 1, characterized in that: The steel mesh (5) and the keyway template steel mesh (10) are both arranged on the same side of the template.

6. The combined, non-removable construction joint formwork according to claim 5, characterized in that: The non-removable steel mesh (5) is located inside the construction joint template (1), and the non-removable steel mesh (10) of the keyway template is located inside the keyway template (2).

7. The combined, non-removable construction joint formwork according to claim 2, characterized in that: The cross-joint reinforcement (9) is welded and fixed to the horizontal connecting reinforcement (4-1) according to the predetermined spacing, and is used to position and fix the cross-joint reinforcement (9).

8. The combined, non-removable construction joint formwork according to claim 1, characterized in that: The frameworks of the construction joint template (1) and the keyway template (2) are both made of welded steel bars.

9. The combined, non-removable construction joint formwork according to claim 3, characterized in that: The mesh portions of the non-removable steel mesh (5) and the non-removable steel mesh (10) of the keyway template are cut open so that the cross-joint reinforcement (9) and the structural reinforcement can pass through.

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