A template for placing embedded steel bars and a construction method thereof
By setting strip grooves on the formwork and bending the steel bars into the grooves, the problems of poor concrete quality, large construction safety hazards and high cost in the traditional embedded steel bar methods are solved, and efficient and safe installation of embedded steel bars is achieved.
Patent Information
- Application Number
- CN202010669011.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-07-13
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2040-07-13
AI Technical Summary
The traditional method of pre-embedded steel bars has problems such as poor concrete quality, large construction safety risks and high construction costs, especially the excessive openings on the formwork, which leads to concrete erosion and damage to the formwork structure.
A formwork is adopted, on which several strip grooves are provided for accommodating embedded steel bars. The steel bars are bent into two sections. The embedded section is inserted into the strip groove to abut the inner side wall. After pouring concrete, the formwork is removed and the projection is chiseled to reveal the embedded section, and straightened by pulling.
It realizes that the steel bars are embedded efficiently and safely without opening the formwork, avoiding concrete erosion and damage to the formwork structure, ensuring concrete quality and construction safety, and reducing construction costs.
Smart Images
Figure CN111877741B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of building construction equipment and methods, and relates to a template for placing embedded steel bars and a construction method thereof. Background Art
[0002] Large structures often require concrete pouring in stages. During implementation, steel bars are embedded in the first-phase concrete to better combine the first-phase and second-phase concretes, or to facilitate the installation of embedded equipment parts. For example, the floating mooring bollard slot in a lock project is usually designed with a second-phase concrete due to its complex structure.
[0003] The traditional method of embedding steel bars is to make holes in the template and let the ends of the steel bars pass through the holes. However, this method has the following disadvantages:
[0004] First, the quality effect is not good. Too many holes in the formwork will cause the loss of concrete slurry and cause local concrete defects. Second, there are great safety hazards in construction. Too many holes in the formwork itself will affect the structure of the formwork and reduce the rigidity of the formwork. In addition, the embedded steel bars may get stuck in the formwork, making it difficult to remove the formwork, posing a great safety hazard. Third, the construction cost is high. Because the size and position of the embedded steel bars change, the formwork may need to be modified, which increases the investment in the formwork cost. The difficulty in removing the formwork will cause a delay in the construction progress, which will also increase the corresponding cost in disguise. Summary of the invention
[0005] In view of the above problems existing in the prior art, the present invention provides a template for placing embedded steel bars. The technical problem to be solved by the present invention is: how to install the embedded steel bars while ensuring the quality of concrete.
[0006] The purpose of the present invention can be achieved by the following technical solutions:
[0007] A template for placing embedded steel bars, the template comprising a plate body, characterized in that the plate body is provided with a plurality of strip grooves for accommodating the embedded steel bars.
[0008] When in use, the template is first installed, and the exposed length of the steel bar and the length embedded in the concrete are determined according to the needs. The steel bar is bent into two sections, including a protruding section and a pre-embedded section. Then the pre-embedded section of the steel bar is inserted into the strip groove, so that the pre-embedded section abuts against the inner wall of the strip groove, and the protruding section of the steel bar is located outside the strip groove. Then the pre-embedded steel bar is fixed, and then concrete is poured to fix the pre-embedded steel bar in the concrete.
[0009] During the pouring process, concrete flows into each strip groove. After pouring, the concrete flowing into each strip groove forms a protrusion connected to the formed concrete. After the formwork is removed, these protrusions are chiseled out, and the embedded section of the steel bar is exposed. At this time, the embedded section is in a bent state. After that, the embedded section is straightened by manual straightening or other methods. Even if the embedded section is perpendicular or substantially perpendicular to the surface of the concrete, the installation of the embedded steel bar is completed. Even if there are no holes in the formwork, the installation of the embedded steel bar can be realized. Because there are no holes in the formwork, concrete defects such as leakage and roughness will not be caused, and the quality of the concrete after demolding can be guaranteed to be good. Although a small part of the concrete is chiseled out, this small part is a protrusion. After chiseling out the protrusion, the shape of the concrete can still be the same as that cast by a general formwork.
[0010] In addition, the rigidity of the formwork will not be affected by the openings, which ensures construction safety to a certain extent. The formwork is easy to disassemble and assemble, saving construction time and reducing construction costs.
[0011] In the above-mentioned template for placing embedded steel bars, the strip-shaped groove includes two inclined inner side walls, and the inner side walls gradually approach each other from the outside to the inside.
[0012] In the above-mentioned template for placing embedded steel bars, the outer edges of each inner side wall are located on the surface of the plate body, and the inner edges of each inner side wall intersect and form a straight line.
[0013] In this structure, the strip groove is a V-shaped groove. After the embedded steel bars are placed in the V-shaped groove, they can be abutted against the two inner side walls of the V-shaped groove. The two side walls play a positioning role, and the installation is more convenient and accurate.
[0014] In the above-mentioned template for placing embedded steel bars, the template is square, and the strip grooves are parallel and extend along the length direction of the template.
[0015] Another object of the present invention is to provide a construction method of the above-mentioned template, the construction method comprising the following steps:
[0016] A. Install the template with strip grooves;
[0017] B. Processing the embedded steel bars, determining the exposed length of the steel bars and the length embedded in the concrete according to the needs, and bending the steel bars into two sections, wherein the two sections of the steel bars include an extended section and an embedded section;
[0018] C. Insert the embedded section of the steel bar into the strip groove so that the embedded section abuts against the inner wall of the strip groove and the extended section of the steel bar is located outside the strip groove. Then fix the embedded steel bars so that the embedded steel bars are arranged in sequence along the length direction of the strip groove and there is a spacing between the embedded steel bars.
[0019] D. pouring concrete to fix the embedded steel bars in the concrete;
[0020] E. Remove the template with strip grooves;
[0021] F. Chisel out the embedded section of the embedded steel bar on the concrete, and then straighten the embedded section of the embedded steel bar.
[0022] During the pouring process, concrete flows into each strip groove. After pouring, the concrete flowing into each strip groove forms a protrusion connected to the formed concrete. After the formwork is removed, these protrusions are chiseled out, and the embedded section of the steel bar is exposed. At this time, the embedded section is in a bent state. After that, the embedded section is straightened by manual straightening or other methods, even if the embedded section is perpendicular or substantially perpendicular to the outer surface of the concrete, the installation of the embedded steel bar is completed. This installation method can realize the installation of the embedded steel bar without opening holes in the formwork. Because there are no holes in the formwork, it will not cause concrete defects such as leakage and roughness, and it can ensure that the quality of the concrete after demolding is good. Although a small part of the concrete is chiseled out, this small part is a protrusion. After chiseling out the protrusion, the shape of the concrete can still be the same as that cast by a general formwork.
[0023] In the above-mentioned formwork construction method, in step B, the steel bar is bent into an L shape.
[0024] In the above-mentioned formwork construction method, in step C, it also includes the step of installing a fixing frame in front of the formwork with strip grooves, the fixing frame includes a plurality of horizontal beams and a plurality of vertical beams, the horizontal beams and the vertical beams are fixed to each other, there are gaps between the horizontal beams and the vertical beams, and the protruding sections of the steel bars extend from the fixing frame and are welded and fixed to the fixing frame.
[0025] The horizontal beams and vertical beams of the fixing frame are metal parts. After the embedded section of the steel bar is inserted into the strip groove and positioned, the protruding section of the embedded steel bar is welded to the fixing frame, which can well fix the embedded steel bar and greatly improve the convenience of operation.
[0026] In the above-mentioned formwork construction method, the vertical beam is parallel to the strip groove, the horizontal beam is perpendicular to the strip groove, the intervals between the horizontal beams are equal, the protruding section of each steel bar protrudes from a gap between the horizontal beams, and each protruding section is fixed on a horizontal beam.
[0027] In the process of installing the embedded steel bars in the formwork, the crossbeam plays a good auxiliary positioning role for the embedded steel bars, that is, as long as the protruding section is abutted against the crossbeam, the placement position of the embedded section can be basically determined. After the two inner walls of the V-shaped groove are abutted against the embedded section, fine-tuning is performed according to the actual situation, so that the placement position of the embedded steel bars can be conveniently and accurately determined, and the spacing between the embedded steel bars after installation is basically equal.
[0028] Compared with the prior art, the advantages of the present invention are as follows:
[0029] 1. This installation method can realize the installation of embedded steel bars without drilling holes on the formwork, will not cause concrete defects such as leakage and roughness, and can ensure good quality of concrete after demolding.
[0030] 2. In this installation method, the installation of embedded steel bars is not only simple but also accurately positioned, which greatly improves the construction efficiency.
[0031] 3. The rigidity of this template will not be affected by the opening, which ensures the construction safety to a certain extent. The template is easy to disassemble and assemble, which saves construction time and reduces construction costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is a schematic diagram of the structure of the template;
[0033] Figure 2 It is a schematic diagram of the embedded steel bars placed on the formwork;
[0034] Figure 3 It is a schematic diagram of the embedded section of embedded steel bars cast on concrete;
[0035] Figure 4 It is a schematic diagram of the embedded section of the embedded steel bar after straightening;
[0036] Figure 5 It is a structural schematic diagram of the fixing frame.
[0037] In the figure, 1 is a formwork; 2 is a plate body; 3 is a strip groove; 4 is an inner wall; 5 is an embedded steel bar; 6 is an extended section; 7 is an embedded section; 8 is a fixed frame; 9 is a horizontal beam; 10 is a vertical beam; 11 is concrete; 12 is an outer surface of concrete. DETAILED DESCRIPTION
[0038] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.
[0039] like Figure 1 As shown, the template 1 includes a plate body 2 , on which a plurality of strip grooves 3 for accommodating embedded steel bars 5 are provided.
[0040] like Figure 2-4 As shown, when in use, the template 1 is first installed, and the exposed length of the steel bar and the length embedded in the concrete 11 are determined according to needs, and the steel bar is bent into two sections, which include a protruding section 6 and a pre-embedded section 7. Then, the pre-embedded section 7 of the steel bar is inserted into the strip groove 3, so that the pre-embedded section 7 abuts against the inner wall 4 of the strip groove 3, and the protruding section 6 of the steel bar is located outside the strip groove 3, and then the pre-embedded steel bar 5 is fixed, and then concrete is poured to fix the pre-embedded steel bar 5 in the concrete;
[0041] During the pouring process, concrete flows into each strip groove 3. After pouring, the concrete flowing into each strip groove 3 forms a protrusion connected to the formed concrete. After removing the formwork 1, these protrusions are chiseled out, and the embedded section 7 of the steel bar is exposed. At this time, the embedded section 7 is in a bent state. Thereafter, the embedded section 7 is straightened by manual straightening or other methods, that is, the embedded section 7 is perpendicular or substantially perpendicular to the surface of the concrete 11. At this time, the installation of the embedded steel bar 5 is completed.
[0042] As shown in FIG. 1 , in this embodiment, the strip-shaped groove 3 includes two inner side walls 4 arranged obliquely, and each inner side wall 4 gradually approaches from the outside to the inside.
[0043] like Figure 1 As shown, in this embodiment, the outer edge of each inner side wall 4 is located on the surface of the plate body 2, and the inner edges of each inner side wall 4 intersect and form a straight line.
[0044] In this structure, the strip groove 3 is a V-shaped groove. After the embedded steel bar 5 is placed in the V-shaped groove, it can be abutted against the two inner side walls 4 of the V-shaped groove. The two side walls play a positioning role, and the installation is more convenient and accurate.
[0045] like Figure 1 As shown, in this embodiment, the template 1 is square, and the strip grooves 3 are parallel to each other and extend along the length direction of the template 1 .
[0046] The construction method of the above template comprises the following steps:
[0047] A. Install the template 1 with the strip groove 3;
[0048] B. Process the embedded steel bar 5, determine the exposed length of the steel bar and the length embedded in the concrete 11 according to the needs, and bend the steel bar into two sections, the two sections of the steel bar including the extended section 6 and the embedded section 7;
[0049] C. Insert the embedded section 7 of the steel bar into the strip groove 3, so that the embedded section 7 abuts against the inner side wall 4 of the strip groove 3, and the extended section 6 of the steel bar is located outside the strip groove 3, and then fix the embedded steel bars 5 so that the embedded steel bars 5 are arranged in sequence along the length direction of the strip groove 3, and there is a spacing between the embedded steel bars 5;
[0050] D. pouring concrete to fix the embedded steel bars 5 in the concrete 11;
[0051] E. Remove the template 1 with the strip groove 3;
[0052] F. Chisel out the embedded section 7 of the embedded steel bar 5 on the concrete 11, and then straighten the embedded section 7 of the embedded steel bar 5.
[0053] During the pouring process, concrete flows into each strip groove 3. After pouring, the concrete flowing into each strip groove 3 forms a protrusion connected to the formed concrete 11. After the template 1 is removed, these protrusions are chiseled out, and the embedded section 7 of the steel bar is exposed. At this time, the embedded section 7 is in a bent state. After that, the embedded section 7 is straightened by manual straightening or other methods, even if the embedded section 7 is perpendicular or substantially perpendicular to the outer surface 12 of the concrete, the installation of the embedded steel bar 5 is completed. This installation method can realize the installation of the embedded steel bar 5 without opening holes in the template 1. Because there are no holes in the template 1, it will not cause concrete 11 defects such as leakage and roughness, and it can ensure that the quality of the concrete 11 after demolding is good. Although a small part of the concrete is chiseled out, the small part is a protrusion. After the protrusion is chiseled out, the shape of the concrete can still be the same as that cast by the general template 1.
[0054] As an embodiment, in step B, the steel bar is bent into an L shape.
[0055] As an embodiment, step C also includes the step of installing a fixing frame 8 in front of the template 1 having the strip groove 3 .
[0056] like Figure 5 As shown, the fixing frame 8 includes a plurality of horizontal beams 9 and a plurality of vertical beams 10. The horizontal beams 9 and the vertical beams 10 are fixed to each other. There are intervals between the horizontal beams 9 and the vertical beams 10. The extending section 6 of the steel bar extends from the fixing frame 8 and is welded and fixed to the fixing frame 8.
[0057] The horizontal beam 9 and the vertical beam 10 of the fixing frame 8 are metal parts. After the embedded section 7 of the steel bar is inserted into the strip groove 3 and positioned, the protruding section 6 of the embedded steel bar 5 is welded to the fixing frame 8, which can well fix the embedded steel bar 5 and greatly improve the convenience of operation.
[0058] like Figure 5 As shown, in this embodiment, the vertical beam 10 is parallel to the strip groove 3, the horizontal beam 9 is perpendicular to the strip groove 3, the intervals between the horizontal beams 9 are equal, and the protruding section 6 of each steel bar protrudes from a gap between the horizontal beams 9 respectively, and each protruding section 6 is fixed on a horizontal beam 9.
[0059] In the process of installing the embedded steel bars 5 in the template 1, the crossbeam 9 plays a good auxiliary positioning role for the embedded steel bars 5, that is, as long as the protruding section 6 is abutted against the crossbeam 9, the placement position of the embedded section 7 can be basically determined. After the two inner walls 4 of the V-shaped groove are abutted against the embedded section 7, fine-tuning is performed according to the actual situation, so that the placement position of the embedded steel bars 5 can be conveniently and accurately determined, and the spacing between the embedded steel bars 5 after installation is also basically equal.
[0060] Of course, the application of this template is not limited to steel bars, but can also be other dowel bars.
[0061] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A construction method for placing a template for embedded steel bars, the construction method comprising the following steps: A. An installation template (1), the template (1) comprising a plate body (2), the plate body (2) being provided with a plurality of strip grooves (3) for accommodating pre-embedded steel bars (5), the strip grooves (3) comprising two inclined inner side walls (4), the outer edge of each inner side wall (4) being located on the surface of the plate body (2), the inner edges of each inner side wall (4) intersecting and forming a straight line; B. Processing the embedded steel bar (5), determining the exposed length of the steel bar and the length embedded in the concrete according to the needs, and bending the steel bar into two sections, wherein the two sections of the steel bar include a protruding section (6) and an embedded section (7); C. Installing a fixing frame (8) in front of the template (1), the fixing frame (8) comprising a plurality of horizontal beams (9) and a plurality of vertical beams (10), the horizontal beams (9) and the vertical beams (10) being fixed to each other, and having intervals between the horizontal beams (9) and the vertical beams (10), inserting the embedded section (7) of the steel bar into the strip groove (3), so that the embedded section (7) abuts against the inner wall (4) of the strip groove (3), and the extended section (6) of the steel bar is located outside the strip groove (3), and then fixing the embedded steel bars (5) so that the embedded steel bars (5) are arranged in sequence along the length direction of the strip groove (3), and there are intervals between the embedded steel bars (5), and the extended section (6) of the steel bar extends from the fixing frame (8) and is welded and fixed to the fixing frame (8); D. pouring concrete to fix the embedded steel bars (5) in the concrete; E. removing the template (1) having the strip groove (3); F. Chisel out the embedded section (7) of the embedded steel bar (5) on the concrete, and then straighten the embedded section (7) of the embedded steel bar (5).
2. A construction method for placing a template for embedded steel bars according to claim 1, characterized in that: In step B, the steel bar is bent into an L-shape.
3. A construction method for placing a template for embedded steel bars according to claim 1, characterized in that: The template (1) is square in shape, and the strip-shaped grooves (3) are parallel to each other and extend along the length direction of the template (1).
4. A construction method for placing a template for embedded steel bars according to claim 1, characterized in that: The vertical beam (10) is parallel to the strip groove (3), the horizontal beam (9) is perpendicular to the strip groove (3), the horizontal beams (9) are spaced equally from each other, the extended section (6) of each steel bar extends from a space between the horizontal beams (9), and each extended section (6) is fixed to a horizontal beam (9).
Citation Information
Patent Citations
Floor slab rebar locating support device
CN206477600U
Template for placing embedded steel bars
CN213359371U