Formwork device based on stock dump concrete large plate dowel bar fixation

Abstract

The utility model relates to a formwork device fixed based on a dowel bar of a large concrete plate of a storage yard. Comprising a formwork panel, lower fixing channel steel is installed on the lower middle portion of the back of the formwork panel, upper detachable channel steel is installed on the upper middle portion of the back of the formwork panel, a through hole is formed in the middle of the formwork panel, a grout stopping rubber plug is arranged in the through hole, and an embedded dowel bar is arranged in the grout stopping rubber plug in a penetrating mode. A channel steel inner side half hole is formed in the inner side of the bottom of the upper detachable channel steel, a channel steel outer side half hole is formed in the outer side of the bottom of the upper detachable channel steel, a channel steel inner side half hole is formed in the inner side of the top of the lower fixed channel steel, and a channel steel outer side half hole is formed in the outer side of the top. The channel steel inner side half holes of the upper detachable channel steel and the lower fixed channel steel form a complete channel steel inner side hole, the grout stop rubber plug is located in the channel steel inner side hole, the channel steel outer side half holes of the upper detachable channel steel and the lower fixed channel steel form a complete channel steel outer side hole, and the embedded dowel bar is located in the channel steel outer side hole. Position accuracy of pouring of the pre-embedded dowel bar is guaranteed, construction quality of the pre-embedded dowel bar is improved, and engineering quality is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of construction technology of concrete slabs in hydraulic dock yards, and particularly relates to a formwork device based on the fixing of force transmission rods for concrete slabs in yards. Background Technology

[0002] Dowel bars are round steel bars arranged at regular intervals along the transverse joints of cement concrete pavement slabs, centered on the slab thickness. One end is fixed within one side slab, while the other end can slide within the adjacent side slab. Their function is to transfer traffic loads between two pavement slabs and prevent misalignment, increase stress transfer between adjacent concrete blocks to prevent uneven settlement of the concrete pavement caused by excessive local stress, and transfer stress so that adjacent concrete blocks share the load. In traditional construction of large concrete slabs in stockyards (referring to the use of large concrete slab construction technology to form the support surface of the stockyard, such as in the construction of hydraulic wharf stockyards), improper measures can easily lead to the dowel bars of the pre-embedded expansion joints tilting and deviating during concrete pouring. In other words, the construction quality of the pre-embedded dowel bars cannot meet the requirements of engineering specifications, resulting in substandard project quality.

[0003] Therefore, controlling the deviation of the embedded dowel bars is a crucial step in the construction process of concrete slab pouring in the stockyard. Existing formwork devices cannot guarantee the construction accuracy of the embedded dowel bars and the overall project quality, so development and design are necessary. Utility Model Content

[0004] The purpose of this utility model is to provide a formwork device for fixing dowel bars in concrete slabs in stockyards, so as to ensure the accuracy of the position of the pre-embedded dowel bars during pouring, improve the construction quality of the pre-embedded dowel bars, and thus ensure the quality of the project.

[0005] The technical solution adopted by this utility model is as follows: a template device based on the fixing of the dowel bar of a large concrete slab in a stockpile, including a template panel, a lower fixed channel steel installed in the lower middle part of the back of the template panel, an upper detachable channel steel installed in the upper middle part of the back of the template panel, the upper detachable channel steel and the lower fixed channel steel being detachably connected, a through hole provided in the middle of the template panel and a grout-stopping rubber plug provided in the through hole, the pre-embedded dowel bar passing through the grout-stopping rubber plug, an inner half hole of the channel steel on the inner side of the bottom of the upper detachable channel steel and an outer half hole of the channel steel on the outer side of the bottom, an inner half hole of the channel steel on the inner side of the top of the lower fixed channel steel and an outer half hole of the channel steel on the outer side of the top, the upper detachable channel steel and the inner half hole of the lower fixed channel steel forming a complete inner hole of the channel steel and the grout-stopping rubber plug being located in the inner hole of the channel steel, the upper detachable channel steel and the outer half hole of the lower fixed channel steel forming a complete outer hole of the channel steel and the pre-embedded dowel bar being located in the outer hole of the channel steel.

[0006] Preferably, the grout-stopping rubber plug includes a rubber sleeve and a retaining ring located at the inner end of the rubber sleeve. The rubber sleeve is located inside the through hole on the template panel, and the outer diameter of the rubber sleeve is equal to the inner diameter of the through hole and the inner hole of the channel steel. The outer diameter of the pre-embedded force transmission rod is equal to the inner diameter of the outer hole of the channel steel.

[0007] Preferably, multiple sets of assembly holes are provided on the top wall of the upper detachable channel steel and the bottom wall of the lower fixed channel steel, and the upper detachable channel steel and the lower fixed channel steel are fixedly connected by upper and lower channel steel connecting bolts located in the assembly holes.

[0008] Preferably, multiple lower channel steel reinforcing plates are welded and installed between the lower fixed channel steel and the template panel.

[0009] Preferably, a top horizontal rib is installed at the top edge of the back of the template panel, and a bottom horizontal rib is installed at the bottom edge of the back of the template panel.

[0010] Preferably, both the top horizontal rib and the bottom horizontal rib of the template are angle steel and are welded and fixed to the template panel.

[0011] The advantages and positive effects of this utility model are:

[0012] This utility model provides a formwork device for fixing dowel bars in concrete slabs in a stockpile. Compared with existing formwork devices, the formwork device in this utility model has components for positioning and fixing pre-embedded dowel bars. This formwork assembly has a lower fixed channel steel and a detachable upper detachable channel steel in the middle of the back of the formwork panel. Between the lower fixed channel steel and the upper detachable channel steel, there are outer holes formed by the outer half-holes of the channel steel and inner holes formed by the inner half-holes of the channel steel. The pre-embedded dowel bars are transversely inserted into the outer and inner holes of the channel steel, thus achieving good fixing and positioning of the pre-embedded dowel bars, ensuring the accuracy of their position, improving the construction quality of the pre-embedded dowel bars, and ultimately ensuring the quality of the concrete slab construction project in the stockpile.

[0013] This template device achieves the technical effect of sealing the gap between the through hole and the pre-embedded dowel bar by setting a grout-stopping rubber plug between the through hole on the template panel and the pre-embedded dowel bar. Therefore, no mortar leakage problem will occur during the subsequent concrete pouring and vibration process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model;

[0016] Figure 3 yes Figure 1 A cross-sectional view of the rubber plug used to stop the slurry.

[0017] Figure 4 yes Figure 2 Schematic diagram of the side structure of the upper and middle detachable channel steel;

[0018] Figure 5 yes Figure 2 A schematic diagram of the side structure of the lower middle fixed channel steel.

[0019] In the picture:

[0020] 1. Template panel; 2. Top horizontal rib of template; 3. Bottom horizontal rib of template; 4. Embedded force transmission rod; 5. Grout stop rubber plug; 6. Upper detachable channel steel; 7. Lower fixed channel steel; 8. Lower channel steel reinforcing plate; 9. Upper and lower channel steel connecting and fixing bolts; 10. Outer half hole of channel steel; 11. Inner half hole of channel steel. Detailed Implementation

[0021] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0022] Please see Figure 1 and Figure 2 The template device based on the force transmission rod fixing of the concrete slab in the stockpile of this utility model includes a template panel 1, a lower fixed channel steel 7 installed in the lower middle part of the back of the template panel 1, and an upper detachable channel steel 6 installed in the upper middle part of the back of the template panel 1. The upper detachable channel steel 6 and the lower fixed channel steel 7 are detachably connected.

[0023] As shown in the figure, the lower fixed channel steel 7 is welded and fixed to the lower middle part of the back of the template panel 1, with the slot facing upwards, while the slot of the upper detachable channel steel 6 faces downwards. In order to enhance the overall structural strength, in this embodiment, multiple lower channel steel reinforcing plates 8 are welded and installed between the lower fixed channel steel 7 and the template panel 1. The steel reinforcing plates 8 are triangular in shape, with their top edges welded and fixed to the bottom of the lower fixed channel steel 7 and their side edges welded and fixed to the back facade of the template panel 1.

[0024] In this embodiment, multiple sets of assembly holes are provided on the top wall of the upper detachable channel steel 6 and the bottom wall of the lower fixed channel steel 7. The upper detachable channel steel 6 and the lower fixed channel steel 7 are fixedly connected by upper and lower channel steel connecting bolts 9 located in the assembly holes.

[0025] A through hole is provided in the middle of the template panel 1, and a grout-stopping rubber plug 5 is installed inside the through hole. A pre-embedded force transmission rod 4 passes through the grout-stopping rubber plug 5. The function of the grout-stopping rubber plug 5 is to seal the gap between the through hole and the pre-embedded force transmission rod 4, thereby preventing mortar leakage. Figure 3As shown in the figure, in this embodiment, the grout-stopping rubber plug 5 includes a rubber sleeve and a retaining ring located at the inner end of the rubber sleeve. The rubber sleeve is located in the through hole on the template panel 1 and the outer diameter of the rubber sleeve is equal to the inner diameter of the through hole. As shown in the figure, the outer diameter of the retaining ring is larger than the outer diameter of the rubber sleeve. In this way, when the rubber sleeve of the grout-stopping rubber plug 5 is inserted into the through hole on the template panel 1, the retaining ring is located on the side where the concrete is located, which can better seal the gap between the through hole and the pre-embedded force transmission rod 4, thereby better preventing grout leakage. At the same time, the retaining ring can also prevent it from falling off during the pouring process.

[0026] Please see Figure 4 and Figure 5 The upper detachable channel steel 6 has an inner half-hole 11 on the bottom inner side and an outer half-hole 10 on the bottom outer side. The lower fixed channel steel 7 has an inner half-hole 11 on the top inner side and an outer half-hole 10 on the top outer side. The upper detachable channel steel 6 and the lower fixed channel steel 7 form a complete inner channel steel hole 11, and the grout-stopping rubber plug 5 is located in the inner channel steel hole. The upper detachable channel steel 6 and the lower fixed channel steel 7 form a complete outer channel steel hole 10, and the pre-embedded force transmission rod 4 is located in the outer channel steel hole.

[0027] In this embodiment, the outer diameter of the rubber sleeve of the grout-stopping rubber plug 5 is equal to the inner diameter of the inner hole of the channel steel, and the outer diameter of the pre-embedded force transmission rod 4 is equal to the inner diameter of the outer hole of the channel steel. Thus, when the upper detachable channel steel 6 is connected to the lower fixed channel steel 7, the exposed rubber sleeve of the grout-stopping rubber plug 5 falls into the inner hole of the channel steel, and the pre-embedded force transmission rod 4 falls into the outer hole of the channel steel. Therefore, this template device can better position and fix each pre-embedded force transmission rod 4 during the template installation stage before pouring concrete, improve the positional accuracy of each pre-embedded force transmission rod 4 during concrete pouring and vibration, improve the construction quality of the pre-embedded force transmission rod 4, and improve the construction quality of the concrete slab construction project in the stockpile.

[0028] In this embodiment, a top horizontal rib 2 and a bottom horizontal rib 3 are installed at the top edge of the back of the template panel 1. The purpose of these ribs is to enhance the structural strength of the entire template assembly and prevent deformation during use. Simultaneously, the lower fixing channel steel 7 on the template panel 1 also strengthens the structural strength of the template assembly. In this embodiment, as shown... Figure 1 As shown, both the top horizontal rib 2 and the bottom horizontal rib 3 of the template are angle steel and are welded and fixed to the template panel 1.

[0029] Construction method:

[0030] First, erect the formwork panel 1 to form a concrete pouring area on the inner side of the formwork panel 1. Then, install the grout-stopping rubber plug 5 in the through hole on the formwork panel 1, with the installation direction from the inside out. Insert the rubber sleeve of the grout-stopping rubber plug 5 into the through hole and make the retaining ring contact the inner vertical surface of the formwork panel 1. The outer end of the rubber sleeve of the grout-stopping rubber plug 5 is located in the inner half-hole 11 of the channel steel of the lower fixed channel steel 7. Then, install the pre-embedded force transmission rod 4 through the grout-stopping rubber plug 5, with the installation direction from the inside out. At this time, each pre-embedded force transmission rod 4 is located in the outer half-hole 10 of the channel steel of the lower fixed channel steel 7. Complete all pre-embedded force transmission rods. After the rod 4 is installed, the upper detachable channel steel 6 is stacked and installed on the lower fixed channel steel 7, so that the outer end of the rubber sleeve of the grout stop rubber plug 5 is located in the inner half hole 11 of the upper detachable channel steel 6, and the pre-embedded force transmission rod 4 is located in the outer half hole 10 of the upper detachable channel steel 6. Finally, the rubber sleeve of the grout stop rubber plug 5 is located in the inner hole of the formed channel steel, and the pre-embedded force transmission rod 4 is located in the outer hole of the formed channel steel. Then, the upper and lower channel steel connecting fixing bolts 9 are installed and locked in the assembly holes of the upper detachable channel steel 6 and the lower fixed channel steel 7, so that the upper detachable channel steel 6 and the lower fixed channel steel 7 are stably connected.

[0031] Then, concrete was poured on the inside.

[0032] After the concrete is poured and formed, first release the connecting bolts 9 of the upper and lower channel steels, then remove the upper detachable channel steel 6 upwards, then move the template panel 1 and its lower fixed channel steel 7 outwards until the pre-embedded force transmission rod 4 is separated from the through hole on the template panel 1, then the grout stop rubber plug 5 can be removed, and then the inner side of the template panel 1 is cleaned in preparation for the next use.

Claims

1. A formwork device based on the fixing of dowel bars for large concrete slabs in a stockpile, characterized in that: Includes a template panel (1), a lower fixed channel steel (7) is installed in the lower middle part of the back of the template panel (1), and an upper detachable channel steel (6) is installed in the upper middle part of the back of the template panel (1). The upper detachable channel steel (6) and the lower fixed channel steel (7) are detachably connected. A through hole is provided in the middle of the template panel (1), and a grout-stopping rubber plug (5) is provided in the through hole. A pre-embedded force transmission rod (4) is inserted into the grout-stopping rubber plug (5). An inner half hole (11) is provided on the bottom inner side of the upper detachable channel steel (6). The outer side of the channel steel is provided with an outer half hole (10), and the inner side of the top of the lower fixed channel steel (7) is provided with an inner half hole (11) and the outer side of the top is provided with an outer half hole (10). The upper detachable channel steel (6) and the inner half hole (11) of the lower fixed channel steel (7) form a complete inner hole of the channel steel, and the grout-stopping rubber plug (5) is located in the inner hole of the channel steel. The upper detachable channel steel (6) and the outer half hole (10) of the lower fixed channel steel (7) form a complete outer hole of the channel steel, and the pre-embedded force transmission rod (4) is located in the outer hole of the channel steel.

2. The formwork device based on the fixing of the large concrete slab in the stockyard as described in claim 1, characterized in that: The grout-stopping rubber plug (5) includes a rubber sleeve and a retaining ring located at the inner end of the rubber sleeve. The rubber sleeve is located in the through hole on the template panel (1) and the outer diameter of the rubber sleeve is equal to the inner diameter of the through hole and the inner hole of the channel steel. The outer diameter of the pre-embedded force transmission rod (4) is equal to the inner diameter of the outer hole of the channel steel.

3. The formwork device based on the fixing of the large concrete slab in the stockpile as described in claim 2, characterized in that: in Multiple sets of assembly holes are provided on the top wall of the upper detachable channel steel (6) and the bottom wall of the lower fixed channel steel (7). The upper detachable channel steel (6) and the lower fixed channel steel (7) are fixedly connected by upper and lower channel steel connecting bolts (9) located in the assembly holes.

4. The formwork device based on the fixing of the large concrete slab in the stockpile as described in claim 3, characterized in that: Multiple lower channel steel reinforcing plates (8) are welded and installed between the lower fixed channel steel (7) and the template panel (1).

5. The formwork device based on the fixing of the large concrete slab in the stockpile as described in claim 4, characterized in that: A template top horizontal rib (2) is installed on the top edge of the back of the template panel (1), and a template bottom horizontal rib (3) is installed on the bottom edge of the back.

6. The formwork device based on the fixing of the large concrete slab in the stockpile as described in claim 5, characterized in that: Both the top horizontal rib (2) and the bottom horizontal rib (3) of the template are angle steel and are welded and fixed to the template panel (1).

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