Recyclable culvert wall tie-rod-free tongue-and-groove formwork device

Abstract

The present invention relates to a formwork, in particular to a recyclable culvert wall tie-rod-free tongue-and-groove formwork device. It comprises an inner formwork, wherein the inner formworks on both sides are symmetrically arranged, an outer formwork is provided on the outer side of the inner formwork, a support structure is provided between the inner formworks, adjacent surfaces of the inner formworks on the same side are connected by a tongue-and-groove structure, the inner side surface of the inner formwork is provided with multiple layers of cross bars, a plurality of vertical bars are provided between the cross bars, and the vertical bars are provided with positioning holes; the support structure comprises vertical bars and cross bracing assemblies, the cross bracing assemblies are respectively located on the rod body and the top end of the vertical bars, the cross bracing assemblies comprise a first horizontal bar, an adjustment bar and a second horizontal bar, the adjustment bar is respectively threadedly connected to the first horizontal bar and the second horizontal bar, and the outer ends of the first horizontal bar and the second horizontal bar are inserted into the positioning holes of the vertical bars. The formwork of the present invention adopts a tongue-and-groove structure for connection, thereby reducing formwork loss; the tie-rod-free formwork reduces the installation of tie bars in the body, greatly reduces the concrete construction time of each formwork, accelerates the construction progress, and shortens the construction period.

Description

Technical Field

[0001] The invention relates to a template, in particular to a recyclable culvert wall tie-rod-free tongue-and-groove template device. Background Art

[0002] With the rapid development of expressways, the construction technology and construction level have been significantly improved. At the same time, the requirements for the internal and external quality of concrete structures have also been continuously improved. In the construction of concrete walls of culvert projects, conventional technology is often used, that is, steel pipe supports are combined with tension screws to fix the inner and outer formwork. However, this construction technology has the following problems:

[0003] ① The panels, which are mainly based on the traditional steel pipe support system, are spliced with flat templates and equipped with through-core tension screws;

[0004] ② The wall surface is prone to bulging and mold expansion, affecting the appearance;

[0005] ③ There are a large number of tie rod holes or tie rod heads on the wall surface. Leakage is very likely to occur around the tie rod holes. After the tie rod holes are sealed, the wall surface is not beautiful, the waterproof quality of the wall is difficult to control, and it is difficult to achieve the ideal effect;

[0006] ④ In order to avoid water seepage in the tie rod holes, asphalt is used to paint the back of the wall, which not only pollutes the environment but also increases the investment in construction measures;

[0007] ⑤ The amount of work required to erect a large number of steel pipe support systems, lay out tie rods, and assemble and dismantle the formwork system is large, and the construction speed is slow, which increases the labor intensity of the construction workers and fails to improve the construction efficiency.

[0008] A Chinese utility model with authorization announcement number CN 219137458 U discloses a formwork-integrated culvert wall formwork structure without tie rods. This utility model requires the erection of a formwork, and has a complex structure. Summary of the Invention

[0009] The present invention aims to solve the above technical problems, thereby providing a recyclable culvert wall tie rod-free tongue and groove formwork device, improving the quality of the culvert wall and improving construction efficiency.

[0010] The present invention solves the technical problem and adopts the following technical solution:

[0011] A recyclable culvert wall tongue-and-groove formwork device without tie rods comprises an inner formwork, the inner formworks on both sides are symmetrically arranged, an outer formwork is provided on the outer side of the inner formwork, and a supporting structure is provided between the inner formworks.

[0012] The adjacent surfaces of the inner template on the same side are connected by a tongue-and-groove structure. The inner side surface of the inner template is provided with multiple layers of horizontal bars, and multiple vertical bars are provided between the horizontal bars. The vertical bars are provided with positioning holes.

[0013] The supporting structure includes vertical poles and cross-bracing assemblies, the cross-bracing assemblies are respectively located at the pole body and the top end of the vertical poles, the cross-bracing assemblies include a first horizontal pole, an adjustment pole and a second horizontal pole, the adjustment poles are respectively threadedly connected to the first horizontal pole and the second horizontal pole, and the outer ends of the first horizontal pole and the second horizontal pole are inserted into the positioning holes of the vertical poles.

[0014] Compared with the prior art, the present invention adopting the above technical solution has the following beneficial effects:

[0015] 1) The template is connected with a tongue-and-groove structure, which can turnover the template, reduce template loss and realize green construction;

[0016] 2) The template has good integrity and strong stability;

[0017] 3) The template assembly workload is small. The entire set of templates only needs to be assembled in place before the first pouring of the wall. Ensure that the joints of each template meet the requirements and are polished smooth.

[0018] 4) The formwork is easy to assemble and disassemble. After pouring concrete for each section of the wall, when the formwork needs to be moved to the next section, it can be hoisted as a whole or disassembled for transportation.

[0019] 5) Tie-rod-free formwork reduces the installation of tie rods inside the formwork, greatly reducing the construction time of each concrete formwork, speeding up the construction progress and effectively shortening the construction period;

[0020] 6) Reduce the number of workers, speed up the construction progress, reduce the investment in construction measures, and achieve the goal of energy conservation and emission reduction;

[0021] 7) After the formwork is removed, there are no traces of repair on the tie rod holes, the structure looks beautiful, and the appearance quality of the wall is effectively improved;

[0022] 8) Since the template does not use tie rods, the loss of tie rods is reduced, and the consumption of tie rod supporting facilities is reduced;

[0023] 9) The tie-rod-free formwork has high rigidity, small deformation during use, and good surface flatness of the finished structure, which improves the internal and external quality of the culvert wall.

[0024] Furthermore, the optimization scheme of the present invention is:

[0025] The inner template comprises a frame and a metal plate. The metal plate is fixed to the outer side surface of the frame. The vertical frame of the frame is provided with a tongue-and-groove structure.

[0026] The crossbar comprises an upper steel section and a lower steel section, the upper steel section and the lower steel section are symmetrically arranged, and an inner template between the upper steel section and the lower steel section is provided with a connecting rod, which passes through the vertical rod and is fixedly connected to the vertical rod.

[0027] The upper steel and the lower steel are channel steel or H-shaped steel.

[0028] The rod body of the vertical rod is connected to the first horizontal rod and the second horizontal rod respectively through connecting fasteners.

[0029] The top end of the vertical rod is fixedly connected to an arc-shaped supporting plate, and the first horizontal rod and the second horizontal rod are respectively placed on the supporting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A front view of an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A top view of

[0032] Figure 3 for Figure 1 Left view of .

[0033] In the figure: inner formwork 1; frame 1-1; metal plate 1-2; tongue-and-groove structure 1-3; cross bar 2; lower steel section 2-1; upper steel section 2-2; connecting rod 3; vertical rod 4; upright rod 5; pad 5-1; support plate 5-2; cross bracing assembly 6; first horizontal rod 6-1; adjustment rod 6-2; second horizontal rod 6-3. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0036] See also Figure 1-Figure 3The present invention provides a recyclable culvert wall tie rod-free tongue and groove formwork device, which is mainly composed of an inner formwork 1 and a supporting structure. The inner formwork 1 is respectively placed on both sides of the culvert and arranged symmetrically, and the outer side of the inner formwork 1 supports the outer formwork. The inner formwork 1 is composed of a frame 1-1 and a metal plate 1-2. The frame 1-1 is a grid-shaped welded component. The metal plate 1-2 is welded to the outer side of the frame 1-1. The metal plate 1-2 is made of 6 mm thick steel plates that are combined, assembled, welded, and polished. The integral fixed large-surface formwork can be hoisted as a whole or disassembled for transportation. After the template is assembled, the large-surface flatness and the misalignment between the plates are less than 1 mm, and there are no tie rod holes on the plate surface. The adjacent inner formworks 1 on the same side are connected by a tongue and groove structure 1-3, and the tongue and groove structure 1-3 is located on the vertical frame of the frame 1-1.

[0037] The inner side of the inner formwork 1 is provided with multiple layers of crossbars 2. Crossbars 2 are composed of lower steel 2-1 and upper steel 2-2. Lower steel 2-1 and upper steel 2-2 are channel steel, with the notch of upper steel 2-2 facing upward. Lower steel 2-1 and upper steel 2-2 are symmetrically arranged. H-shaped steel can also be used for lower steel 2-1 and upper steel 2-2. Connecting rods 3 are provided between lower steel 2-1 and upper steel 2-2. Connecting rods 3 are arranged horizontally and perpendicular to inner formwork 1. Connecting rods 3 are threaded rods that are fixedly connected to inner formwork 1. Multiple evenly spaced vertical rods 4 are erected on the inner side of lower steel 2-1 and upper steel 2-2. Vertical rods 4 are square tubes, rectangular tubes, or square steel. The inner ends of connecting rods 3 pass through vertical rods 4 and are connected to vertical rods 4 via nuts. Vertical rods 4 are provided with multiple positioning holes.

[0038] A support structure is provided between the inner formwork 1 on both sides. The support structure is primarily composed of vertical rods 5 and cross bracing assemblies 6. The cross bracing assemblies 6 are located at the shaft and top of the vertical rods 5, respectively. A rectangular pad 5-1 is welded to the lower end of the vertical rod 5, and an arc-shaped support plate 5-2 is welded to the top of the vertical rod 5. The vertical rods 5 are made of steel pipe. The cross bracing assemblies 6 primarily consist of a first horizontal rod 6-1, an adjustment rod 6-2, and a second horizontal rod 6-3. The first and second horizontal rods 6-1, 6-3 are both made of steel pipe. The first and second horizontal rods 6-1, 6-3 of the shaft of the vertical rod 5 are connected to the vertical rod 5 via connecting fasteners. The first and second horizontal rods 6-1, 6-3 at the top of the vertical rod 5 are placed on the support plate 5-2.

[0039] The length of the first horizontal rod 6-1 is longer than the length of the second horizontal rod 6-3. The adjustment rod 6-2 is located between the first horizontal rod 6-1 and the second horizontal rod 6-3. Screws are welded to both ends of the adjustment rod 6-2, and the screws are connected to the threaded holes of the first horizontal rod 6-1 and the second horizontal rod 6-3 respectively. The adjustment rod 6-2 is used to adjust the distance between the first horizontal rod 6-1 and the second horizontal rod 6-3, thereby adjusting the overall length of the cross brace assembly 6. The first horizontal rod 6-1 is located on the inner side of the front inner template 1, and the second horizontal rod 6-3 is located on the inner side of the rear inner template 1. The outer ends of the first horizontal rod 6-1 and the second horizontal rod 6-3 are respectively inserted into the positioning holes of the vertical rod 4.

[0040] The single-section wall body of the present invention adopts an independent formwork, and the formwork support and reinforcement adopts a rigid support system composed of steel pipes and steel sections, which is firmly supported. The inner formwork adopts an adjustable telescopic steel pipe frame for support and reinforcement, and the outer formwork adopts I-steel + high-strength tension screws at both ends of the formwork for reinforcement. There is no need to add reinforcement screws in the formwork. The entire inner and outer formwork surfaces are integrated, which improves the appearance quality of the culvert wall, makes the formwork quick and easy to move, and improves the construction efficiency.

[0041] There are no longer tie rod holes at the bottom of the formwork, and bottom limit supports are used. At the same time, the formwork relies on its own rigidity and the middle and upper connections to resist deformation and displacement caused by construction loads. Three inner top supports are used to reinforce the middle part; the top is connected with A25 precision-rolled threaded steel tension bolts that are higher than the wall. There is no need to set tie rods within the wall, and there are no tie rod holes on the entire wall.

[0042] Compared to the traditional process of using steel pipe supports with tie rods to secure the inner and outer formwork, the formwork assembly of this invention saves labor, machinery, and materials. Tie-rod-free wall formwork is a novel construction technology that improves construction efficiency, enhances the appearance of culvert walls, saves construction costs, reduces the use of formwork and tie rods, and avoids noise pollution and waste gas pollution caused by machines such as electric saws and impact drills, resulting in excellent economic and environmental benefits.

[0043] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A recyclable culvert wall tongue-and-groove formwork device without tie rods, comprising inner formwork, inner formwork on both sides arranged symmetrically, outer formwork provided on the outer sides of the inner formwork, and a support structure provided between the inner formworks, characterized in that: The adjacent surfaces of the inner template on the same side are connected by a tongue-and-groove structure. The inner side surface of the inner template is provided with multiple layers of horizontal bars, and multiple vertical bars are provided between the horizontal bars. The vertical bars are provided with positioning holes. The support structure includes vertical rods and cross-bracing assemblies, the cross-bracing assemblies are respectively located at the rod body and the top of the vertical rods, the cross-bracing assemblies include a first horizontal rod, an adjustment rod and a second horizontal rod, the adjustment rod is respectively threadedly connected to the first horizontal rod and the second horizontal rod, and the outer ends of the first horizontal rod and the second horizontal rod are inserted into the positioning holes of the vertical rods; The inner template comprises a frame and a metal plate, the metal plate being fixed to the outer side of the frame, and the vertical frame of the frame is provided with a tongue-and-groove structure; The crossbar comprises an upper steel section and a lower steel section, the upper steel section and the lower steel section are symmetrically arranged, and the inner template between the upper steel section and the lower steel section is provided with a connecting rod, which passes through the vertical rod and is fixedly connected to the vertical rod; The top end of the vertical rod is fixedly connected to an arc-shaped supporting plate, and the first horizontal rod and the second horizontal rod are respectively placed on the supporting plate.

2. The recyclable culvert wall tie-rod-free tongue-and-groove formwork device according to claim 1, characterized in that: The upper steel and the lower steel are channel steel or H-shaped steel.

3. The recyclable culvert wall tie-rod-free tongue-and-groove formwork device according to claim 1, characterized in that: The rod body of the vertical rod is connected to the first horizontal rod and the second horizontal rod respectively through connecting fasteners.

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