Structural haunch template reinforcing device and reinforcing method
By using horizontal and vertical rods to form a triangular structure template reinforcement device at the axil corner, the problem of complex force of traditional oblique supports is solved, efficient and safe axil corner template reinforcement is achieved, and construction costs are reduced.
Patent Information
- Application Number
- CN202511049732.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2025-09-16
AI Technical Summary
Traditional diagonal supports have complex forces at the axil corners, low construction accuracy, and are prone to quality problems such as mold expansion and slurry leakage. They are also difficult to install, affecting construction efficiency.
A triangular structure is formed by using a horizontal rod, a first vertical rod and a second vertical rod, which are connected by fasteners and connecting angle codes to form a stable template reinforcement device, and are installed and disassembled according to specific steps.
It improves the construction efficiency and safety of formwork reinforcement, reduces construction costs, and avoids quality problems such as formwork expansion and slurry leakage.
Smart Images
Figure CN120649662A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of construction of rectangular structures such as underpass tunnels and box culverts, and in particular to a structural axil corner formwork reinforcement device and a reinforcement method. Background Art
[0002] For rectangular structures such as urban underpasses and box culverts, armpit angles are typically installed at the intersection of the side walls and roof structure to enhance the support plane rigidity and improve stress concentration at the intersection. The armpit angles are generally triangular, with right-angled sides ranging in length from 0.5m to 1.0m. Located at the corners of the structure, traditional diagonal supports must be connected to steel pipe racks, resulting in complex force distribution, low construction precision, and the risk of quality issues such as mold expansion and slurry leakage. Furthermore, the diagonal support rods are difficult to install and require frequent angle adjustments, impacting construction efficiency. Summary of the Invention
[0003] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a structural corner formwork reinforcement device and reinforcement method that can ensure the reinforced installation of the formwork and improve labor efficiency.
[0004] On the one hand, the present invention provides a structural corner formwork reinforcement device, the following technical solution: A structural armpit corner template reinforcement device includes a horizontal rod, a first vertical rod and a second vertical rod. The multiple horizontal rods are evenly distributed along the length direction of the middle partition wall. The middle partition wall is provided with multiple reserved holes. The horizontal rods pass through the reserved holes. One horizontal rod corresponds to a first vertical rod and a second vertical rod. Template holes for the first vertical rod and the second vertical rod to pass through are opened on the template. One end of the horizontal rod is connected to the bottom of the first vertical rod through a fastener, and the other end of the horizontal rod is connected to the bottom of the second vertical rod through the fastener. The first vertical rod and the second vertical rod are sleeved after passing through the template. The tops of the first vertical rod and the second vertical rod both extend out of the sleeve and are connected by connecting angle codes. Fasteners are provided on the first vertical rod and the second vertical rod to support the keel below the template.
[0005] Optionally, the fastener includes a support fastening nut and a support I-beam, the support fastening nut is threadedly connected to the first vertical rod, and the support I-beam is located between the template at the axillary corner position and the support fastening nut.
[0006] Optionally, the fastener further includes a support plate, which is located above the support nut, the first vertical rod passes through the support plate, and the support plate contacts the bottom of the supporting I-beam.
[0007] Optionally, the connecting angle code is a V-shaped pipe with an internal thread on the inner wall of the pipe. The first vertical rod is inserted into one end of the connecting angle code and is threadedly connected to the connecting angle code. The second vertical rod is inserted into the other end of the connecting angle code and is threadedly connected to the connecting angle code.
[0008] In another aspect, the present invention discloses a method for reinforcing a structural corner formwork, comprising the following steps: S1, reserved hole in the middle partition wall; S2, horizontal rod installation; According to the total length of the armpit angles on both sides of the middle partition wall, a suitable horizontal rod is matched and the horizontal rod passes through the reserved hole; S3, template preparation; A template is provided according to the size of the armpit corner, the template is extended to the lower wall, and template holes are reserved on the template according to the size of the first vertical rod and the second vertical rod; S4, vertical rod installation; After installing the formwork and primary and secondary keels on one side of the middle partition wall, first install the first vertical rod, passing it through the corresponding formwork hole. The bottom of the first vertical rod is connected to one end of the horizontal rod via a rotating fastener. The elevation of multiple first vertical rods must be consistent. Adjust the elevation of the fasteners on the first vertical rod according to the axilla angle positioning so that the formwork at the axilla angle is in the designed position. Socket the first vertical rod above the formwork. After that, install the formwork and primary and secondary keels on the other side of the middle partition wall, and then install the second vertical rod. The second vertical rod above the formwork is connected to the sleeve. The top of the second vertical rod is connected to the top of the first vertical rod through the connecting angle bracket, and the bottom of the second vertical rod is connected to the horizontal rod through the rotating fastener. S5, steel bar binding and concrete pouring; After the formwork reinforcement is completed and the composite elevation is determined, and after passing the acceptance inspection, the steel bars will be tied and concrete will be poured.
[0009] Compared with the prior art, the present invention has the following technical effects: The present invention forms a triangle by means of a first vertical rod, a second vertical rod and a horizontal rod, and utilizes the triangle stability principle to rationally optimize the process, thereby ensuring the reinforcement safety of the template, improving labor efficiency and effectively saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram embodying the horizontal rod, the first vertical rod and the second vertical rod in the present invention; Figure 3 It is a schematic diagram of the template and template holes in the present invention.
[0011] Explanation of the accompanying reference numerals: 1. Middle partition wall; 11. Reserved hole; 2. Template; 21. Template hole; 3. Horizontal rod; 4. First vertical rod; 5. Second vertical rod; 6. Fastener; 61. Support fastening nut; 62. Support I-beam; 63. Support pad; 7. Sleeve; 8. Connection angle code. DETAILED DESCRIPTION
[0012] The following is combined with Figure 1 -Attached Figure 3 The present invention is described in further detail.
[0013] Reference Figure 1 and Figure 2 An embodiment of the present invention discloses a structural armpit corner formwork reinforcement device, including a horizontal rod 3, a first vertical rod 4 and a second vertical rod 5. A plurality of reserved holes 11 are reserved on the middle partition wall 1 in the box culvert. The box culvert casting is divided into three parts. First, the bottom plate is cast, then the side wall and the middle partition wall 1 are cast, and finally the top plate is cast.
[0014] Multiple pre-set holes 11 are evenly distributed along the length of the middle partition wall 1, with each horizontal rod 3 corresponding to a pre-set hole 11, through which the horizontal rods 3 pass. Formwork 2 is provided with formwork holes 21. A first vertical rod 4 passes through the formwork holes 21 on one side of the middle partition wall 1, while a second vertical rod 5 passes through the formwork holes 21 on the other side of the middle partition wall 1. Both the first vertical rod 4 and the second vertical rod 5 are connected to the horizontal rod 3 via rotating fasteners. Formwork 2 near the middle partition wall 1 extends downward to the horizontal rod 3, which supports the formwork 2.
[0015] Both the first vertical rod 4 and the second vertical rod 5 are provided with fasteners 6 for supporting the formwork 2. The fasteners 6 on the first vertical rod 4 are used as an example to explain the fasteners 6. The fasteners 6 include a supporting fastening nut 61 and a supporting I-beam 62. The supporting fastening nut 61 is threadedly connected to the first vertical rod 4. The supporting I-beam 62 is located between the formwork 2 at the axillary corner and the supporting fastening nut 61. A keel is provided below the formwork 2, and the supporting I-beam 62 is in contact with the keel. A supporting pad 63 is provided on the supporting fastening nut 61. The supporting pad 63 is in contact with the bottom of the supporting I-beam 62, and the first vertical rod 4 passes through the supporting pad 63. According to the positioning of the axillary corner, the position of the supporting fastening nut 61 is adjusted so that the supporting I-beam 62 supports the formwork 2 at the axillary corner.
[0016] After passing through the formwork 2, the first and second vertical rods 4 and 5 are fitted with sleeves 7 made of PVC. The tops of the sleeves extend out of the sleeves and are equipped with connecting brackets 8, connecting the first and second vertical rods 4 and 5. Connecting brackets 8 are V-shaped pipes with internal threads on their inner walls. The first vertical rod 4 is inserted into one end of the connecting bracket 8 and threadedly connected to it, while the second vertical rod 5 is inserted into the other end of the connecting bracket 8 and threadedly connected to it. The first and second vertical rods 4 and 5 are positioned perpendicular to the formwork 2 at the axilla angle.
[0017] After the upper part of the box culvert is poured with concrete, when dismantling the formwork 2, first loosen the support fastening nut 61, remove the supporting I-beam 62, and then dismantle the first vertical connecting rod 4, the second vertical connecting rod 5 and the horizontal rod 3 in turn, remove the first vertical connecting rod 4 and the second vertical connecting rod 5 from the concrete, and finally dismantle the formwork 2.
[0018] The embodiment of the present invention discloses a method for reinforcing a structural corner formwork, comprising the following steps: S1, reserved hole 11 in the middle partition wall 1.
[0019] When pouring the lower concrete of the box culvert, a plurality of reserved holes 11 are set on the middle partition wall 1. The height position of the reserved hole 11 is H away from the top position of the middle partition wall 1, and the distance between two adjacent reserved holes 11 is L. The distance H is about 300 mm, and the distance L is about 450 mm. The sizes of H and L need to be calculated according to different armpit angle sizes.
[0020] S2. Installation of horizontal rod 3.
[0021] According to the total length of the armpit corners on both sides of the middle partition wall 1, a suitable horizontal rod 3 is matched, and the horizontal rod 3 passes through the reserved hole 11.
[0022] S3. Template 2 preparation.
[0023] A template 2 is equipped according to the size of the armpit corner, and the template 2 extends to the lower wall. Template holes 21 are reserved on the template 2 according to the sizes of the first vertical rod 4 and the second vertical rod 5, and the first vertical rod 4 and the second vertical rod 5 are required to be able to pass through the template 2 holes smoothly.
[0024] S4. Installation of vertical rods.
[0025] After installing the formwork 2 and primary and secondary studs on one side of the central partition wall 1, first install the first vertical rods 4, passing them through the corresponding formwork holes 21. The bottoms of the first vertical rods 4 are connected to one end of the horizontal rods 3 via rotating fasteners. The elevations of the multiple first vertical rods 4 must be consistent. Adjust the elevations of the fasteners 6 on the first vertical rods 4 based on the axilla angle positioning to ensure that the formwork 2 at the axilla angle is in the designed position. Sleeves 7 are placed on the first vertical rods 4 above the formwork 2.
[0026] After that, the formwork 2 and primary and secondary keels on the other side of the middle partition wall 1 are installed, and then the second vertical rod 5 is installed. The second vertical rod 5 above the formwork 2 is connected to the sleeve 7. The top of the second vertical rod 5 is connected to the top of the first vertical rod 4 through the connecting angle code 8, and the bottom of the second vertical rod 5 is connected to the horizontal rod 3 through a rotating fastener.
[0027] S5. Steel bar binding and concrete pouring.
[0028] After the reinforcement of formwork 2 is completed and the composite elevation is passed, the steel bars will be tied and concrete will be poured.
[0029] The present invention forms a triangle by the first vertical rod 4, the second vertical rod 5 and the horizontal rod 3, and utilizes the triangle stability principle to rationally optimize the process, thereby ensuring the reinforcement safety of the template 2, improving labor efficiency and effectively saving construction costs.
[0030] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.
Claims
1. A structural corner formwork reinforcement device, characterized by: The invention comprises a horizontal rod (3), a first vertical rod (4) and a second vertical rod (5), wherein the plurality of horizontal rods (3) are evenly distributed along the length direction of the middle partition wall (1), the middle partition wall (1) is provided with a plurality of reserved holes (11), the horizontal rods (3) pass through the reserved holes (11), one horizontal rod (3) corresponds to one first vertical rod (4) and one second vertical rod (5), the template (2) is provided with a template hole (21) for the first vertical rod (4) and the second vertical rod (5) to pass through, the horizontal rod (3) is provided with a plurality of reserved holes (11), the horizontal rod (3) passes through the reserved holes (11), one horizontal rod (3) corresponds to one first vertical rod (4) and one second vertical rod (5), the template (2) is provided with a template hole (21) for the first vertical rod (4) and the second vertical rod (5) to pass through, One end is connected to the bottom of the first vertical rod (4) through a fastener, and the other end of the horizontal rod (3) is connected to the bottom of the second vertical rod (5) through a fastener. The first vertical rod (4) and the second vertical rod (5) are sleeved with a sleeve (7) after passing through the template (2). The tops of the first vertical rod (4) and the second vertical rod (5) extend out of the sleeve (7) and are connected through a connecting angle code (8). The first vertical rod (4) and the second vertical rod (5) are both provided with a fastener (6) for supporting the keel below the template (2).
2. The structural corner formwork reinforcement device according to claim 1, characterized in that: The fastener (6) comprises a supporting fastening nut (61) and a supporting I-beam (62), wherein the supporting fastening nut (61) is threadedly connected to the first vertical rod (4), and the supporting I-beam (62) is located between the template (2) at the axillary angle position and the supporting fastening nut (61).
3. The structural armpit corner formwork reinforcement device according to claim 2, characterized in that: The fastener (6) further includes a support pad (63), the support pad (63) is located above the support nut, the first vertical rod (4) passes through the support pad (63), and the support pad (63) contacts the bottom of the supporting I-beam (62).
4. The structural corner formwork reinforcement device according to any one of claims 1 to 3, characterized in that: The connecting angle code (8) is a V-shaped pipe with an internal thread on the inner wall of the pipe. The first vertical rod (4) is inserted into one end of the connecting angle code (8) and is threadedly connected to the connecting angle code (8). The second vertical rod (5) is inserted into the other end of the connecting angle code (8) and is threadedly connected to the connecting angle code (8).
5. A reinforcement method for the structural armpit corner formwork reinforcement device according to claim 1, characterized in that: The steps include: S1, middle partition wall (1) wall reserved hole (11); S2, installation of horizontal rod (3); According to the total length of the armpit angles on both sides of the middle partition wall (1), a suitable horizontal rod (3) is matched, and the horizontal rod (3) passes through the reserved hole (11); S3, template (2) preparation; A template (2) is provided according to the size of the armpit corner, the template (2) extends to the lower wall, and a template hole (21) is reserved on the template (2) according to the size of the first vertical rod (4) and the second vertical rod (5); S4, vertical rod installation; After installing the formwork (2) and the primary and secondary keels on one side of the middle partition wall (1), first install the first vertical rod (4), so that the first vertical rod (4) passes through the corresponding template hole (21), and the bottom of the first vertical rod (4) is connected to one end of the horizontal rod (3) through a rotating fastener, requiring the elevation of multiple first vertical rods (4) to be consistent; adjust the elevation of the fastener (6) on the first vertical rod (4) according to the axillary angle positioning, so that the template (2) at the axillary angle position is in the designed position; the first vertical rod (4) above the template (2) is sleeved with the sleeve (7); Then, the template (2) and the primary and secondary keels on the other side of the middle partition wall (1) are installed, and then the second vertical rod (5) is installed. The second vertical rod (5) above the template (2) is connected to the sleeve (7). The top of the second vertical rod (5) is connected to the top of the first vertical rod (4) through the connecting angle code (8), and the bottom of the second vertical rod (5) is connected to the horizontal rod (3) through a rotating fastener. S5, steel bar binding and concrete pouring; After the formwork (2) is reinforced and the composite elevation is completed, the steel bars are tied and the concrete is poured after passing the inspection.