Dowel bar flat joint template for airport concrete pavement

Abstract

The utility model discloses an airport concrete pavement dowel bar flat seam template which comprises fixing feet, a supporting frame body, a template body, a dowel bar and a dowel bar fixing piece, a bar piece bracket is welded to the rear side of a reserved through hole in the template, the pre-burying distance of the dowel bar is convenient to control, meanwhile, an easily-demoulded ring piece is arranged on the casting face side of the dowel bar, and the dowel bar fixing piece is fixed to the template body. The template at the dowel bar part can be easily removed, the damage of the concrete at the dowel bar part caused by the removal of the template is prevented, the overall quality of the concrete pavement is improved, and the dowel bar fixing part is arranged on the rear side of the template, so that the displacement of the rod piece caused by the influence of external factors such as mechanical equipment running and concrete vibration is prevented; the stability of the mounting position of the dowel bar in the concrete pouring period is ensured, the dowel bar is located at the position required by a design drawing from beginning to end, the dowel bar is stressed more uniformly in the runway operation period, and the anti-shearing force caused by resisting aircraft collision is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering, specifically relates to an airport concrete pavement force transmission rod flat joint formwork. BACKGROUND

[0002] At present, the airport concrete pavement construction at home and abroad adopts the fixed mold pouring process, one of which is the pre-buried mode, the installation of the force transmission rod is carried out before the pavement concrete pouring after the completion of the formwork installation, the construction method is convenient to operate and low in cost, and is most commonly used in engineering, but due to the influence of external factors such as personnel placement position, mechanical equipment driving and row type vibrating rod vibration, the force transmission rod is deviated, the pre-buried depth is uneven, and other problems, which will lead to failure in quality acceptance and be required to rework, and more seriously, will affect the safety of runway operation in the later period. CONTENT OF THE UTILITY MODEL

[0003] In order to ensure the continuity and forming quality of the airport pavement paving and reduce the consumption caused by subsequent quality problems, the utility model provides an airport concrete pavement force transmission rod flat joint formwork, which ensures the stability of the installation position of the force transmission rod during the concrete pouring.

[0004] In order to achieve the above purpose, the utility model is realized by the following technical scheme:

[0005] An airport concrete pavement force transmission rod flat joint formwork, comprising a fixed foot, a support frame body, a formwork, a force transmission rod and a force transmission rod fixing piece;

[0006] The force transmission rod flat joint formwork comprises an integral steel form made of channel steel and a plurality of steel form webs connected to the inner side of the channel of the integral steel form, the integral steel form is used for pavement concrete forming, a row of reserved through holes for passing through the force transmission rod are arranged at equal intervals on the integral steel form, each reserved through hole is provided with a demolding ring piece, a rod bracket is arranged at the position corresponding to each reserved through hole on the inner side of the channel of the integral steel form, and at least part of the steel form webs are connected with the support frame body through first bolts;

[0007] The support frame body comprises a support frame resisting the horizontal thrust generated during the concrete pouring and a support web ensuring the uniform and stable stress of the support frame, the support frame is bent from an L-shaped steel, the support frame comprises a horizontal section, a vertical section and an inclined section, the inclined section is located above the horizontal section, the vertical section connects the horizontal section and the inclined section, the horizontal section and the inclined section are both welded and connected with the support web, the free end of the horizontal section and the free end of the inclined section are connected with the steel form web through first bolts, and the bottom surface of the horizontal section is flush with the bottom surface of the integral steel form;

[0008] The fixed foot comprises a fixed foot support providing support, a steel drill vertically driven into the surface of the water stable layer to provide support, a second bolt for fixing the steel drill to prevent it from sliding up and down, and a third bolt connected with the support frame body to form a whole, the fixed foot support has a vertical through hole, the fixed foot support is sleeved on the steel drill and fixed on the steel drill through the second bolt, and the fixed foot support is connected with the vertical section of the support frame through the third bolt;

[0009] The force transmission rod fixing member comprises a square tube, positioning tubes welded on the top surface of the square tube and arranged at equal intervals on the same horizontal plane, and positioning bolts for fixing the force transmission rod installed on each positioning tube, the interval between the positioning tubes is equal to the interval between the reserved through holes;

[0010] Each reserved through hole is provided with a force transmission rod, one end of each force transmission rod protrudes from the back of the support frame body to the same length, and the other end of each force transmission rod is inserted into the corresponding positioning tube and locked through the positioning bolt.

[0011] Further, the easy demolding ring piece is coated with a demolding agent.

[0012] The utility model has the following beneficial effects:

[0013] 1、The utility model discloses an airport concrete pavement force transmission rod flat joint formwork, welding the bracket behind the reserved through hole, the control of force transmission rod pre -buried distance is convenient, and the easy demolding ring piece is arranged on the force transmission rod pouring surface side, and the formwork of force transmission rod part can be easily removed, the damage of the concrete of force transmission rod part caused by formwork removal is prevented, and the overall quality of the concrete pavement is improved. Through setting the force transmission rod fixing member on the back of the formwork, the displacement of the rod caused by the influence of external factors such as mechanical equipment driving and concrete vibration is prevented, the stability of the installation position of the force transmission rod during the concrete pouring period is ensured, the force transmission rod is always in the position required by the design drawing, the force transmission rod is more uniform during the runway operation period, and the shear resistance caused by the impact of the airplane is strengthened.

[0014] 2, simple structure, convenient operation, the main material can be made of sectional steel, and can be made on site. Through setting the bracket behind the reserved through hole, the horizontal position of the force transmission rod is guaranteed, and the pre -buried length of the force transmission rod is controlled, the force transmission rod is installed through the force transmission rod fixing member, and the adverse influence of the displacement of the rod caused by external factors is avoided.

[0015] 3, install the easy demolding ring piece on the formwork, and brush the demolding agent, reduce the knock -caused by the formwork removal, make the connection of the formwork and the force transmission rod smooth and flat. DRAWINGS

[0016] Figure 1 It is the construction state diagram of the airport concrete pavement force transmission rod flat joint formwork of the utility model.

[0017] Figure 2 It is a structural diagram of the template of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the support frame of the utility model;

[0019] Figure 4 This is another angle view of the support frame of the present invention;

[0020] Figure 5 This is the assembly drawing of the support frame, template and fixed legs;

[0021] Figure 6 yes Figure 5 Another angle view of

[0022] Figure 7 This is the overall structural diagram of the airport concrete pavement dowel bar flat seam template of the utility model;

[0023] Figure 8 yes Figure 7 Another angle view of

[0024] Figure 9 It is a schematic diagram of the dowel rod fixing member of the present utility model; DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] 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. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] like Figures 1 to 9 As shown, this embodiment discloses a dowel bar flat seam formwork for an airport concrete pavement, comprising a fixed foot 1, a support frame 2, a formwork 3, a dowel bar 4 and a dowel bar fixing member 5.

[0028] The template 3 comprises a whole steel mould 301 made of channel steel for forming pavement concrete, a plurality of steel mould webs 306 connected to the inner side of the channel of the whole steel mould 301, and a row of equidistantly arranged and used for passing through the force transmission rod 4 reserved through holes 302 provided on the whole steel mould 301, each reserved through hole 302 is provided with a demoulding ring 303, and the inner side of the channel of the whole steel mould 301 is provided with a rod bracket 304 corresponding to each reserved through hole 302, and at least part of the steel mould webs 306 are connected with the support frame 2 through the first bolts 305 (preferably hexagonal bolts).

[0029] The support frame 2 comprises a support frame 201 resisting the horizontal thrust generated during concrete pouring and a support web 202 ensuring that the support frame 201 is uniformly and stably stressed, the support frame 201 is bent from an L-shaped steel, the support frame 201 comprises a horizontal section, a vertical section and an inclined section, the inclined section is located above the horizontal section, the vertical section connects the horizontal section and the inclined section, and the horizontal section and the inclined section are both welded with the support web 202, the free end of the horizontal section and the free end of the inclined section are connected with the steel mould web 306 through the first bolts 305, and the bottom surface of the horizontal section is flush with the bottom surface of the whole steel mould 301.

[0030] The fixing foot 1 comprises a fixing foot frame 101 providing support, a steel drill 102 vertically punched into the surface of the water stable layer to support and fix, a second bolt 103 for fixing the steel drill 102 to prevent it from sliding up and down, and a third bolt 104 connected with the support frame 2 to form a whole, the fixing foot frame 101 has a vertical through hole, the fixing foot frame 101 is sleeved on the steel drill 102 and fixed on the steel drill 102 through the second bolt 103, and the fixing foot frame 101 is connected with the vertical section of the support frame 201 through the third bolt 104.

[0031] The force transmission rod fixing part 5 comprises a square tube 501 for forming a frame, positioning pipes 502 welded on the top surface of the square tube 501 and arranged equidistantly on the same horizontal plane, and positioning bolts 503 installed on each positioning pipe 502 for fixing the force transmission rod 4, the spacing between the positioning pipes 502 is equal to the spacing between the reserved through holes 302.

[0032] Each reserved through hole 302 is provided with a force transmission rod 4, one end of each force transmission rod 4 protrudes from the back side of the whole steel mould 301 away from the support frame 2 and has the same length of protrusion, and the other end of each force transmission rod 4 is inserted into the corresponding positioning pipe 502 and locked by the positioning bolt 503.

[0033] The support frame body 2 is made of L-shaped steel bending, in order to ensure the uniform stress and stability of the support frame 201, a support web 202 is welded near the end part, the support frame body 2 is connected with the fixed foot 1 through the fixing bolt 104, so that it forms a whole, the fixed foot 1 provides a support point, and the support frame body 2 provides a support force to resist the horizontal thrust generated by the two side forms 3 during the concrete pouring.

[0034] The fixed foot 1 provides a support point for the whole of the support frame body 2 and the form 3, and prevents the displacement caused by vibration and other external forces.

[0035] The form 3 is welded with a rod bracket 304 at the rear side of the reserved through hole 302, the transfer bar 4 is horizontally placed on the rod bracket 304 before the concrete pouring, so as to facilitate the position determination. After the transfer bar 4 is placed on the rod bracket 304 through the reserved through hole 302, the easy-to-demould ring piece 303 is passed through each transfer bar 4 and installed to the side of the concrete pouring surface, when the form 3 is removed, the easy-to-demould ring piece 303 can protect the concrete part of the transfer bar 4 from being damaged, and the easy-to-demould ring piece 303 is coated with a demoulding agent, so that the ring piece is easy to demould.

[0036] The interval of the positioning pipe 502 in the transfer bar fixing part 5 should be the same as the interval of the reserved through hole 302, and meet the requirements of the design drawing and the specification for the arrangement interval of the transfer bar 4; the positioning pipe 502 is welded on the same side of the square tube 501 and kept on the same horizontal plane. According to the setting of the transfer bar 4, the positioning pipe 502 is passed through each transfer bar 4, and after the required size is measured by a tape measure according to the design drawing, the transfer bar 4 is locked by the positioning bolt 503, so that it does not slide again.

[0037] After the pouring surface is measured and laid out, the steel drill 102 is vertically punched into the water stable layer and locked by the second bolt 103; after the transfer bar 4 is passed through the reserved through hole 302 on the form 3 and placed on the rod bracket 304, the easy-to-demould ring piece 303 is passed through the transfer bar 4 and installed to the pouring side; the transfer bar fixing part 5 welds the positioning pipe 502 on the same horizontal plane according to the interval of the reserved through hole 302 through the square tube 501, and after the transfer bar 4 is passed through the transfer bar fixing part, the positioning bolt 503 is used to lock each transfer bar 4 after it is moved to the same size according to the design specification requirements.

[0038] The airport concrete pavement transfer bar flat joint form in the embodiment has the advantages of simple structure, convenient operation, and the main materials used can be made of profiled steel and can be made on site, and before the production, the form height can be made as 42cm, 38cm, 25cm and 20cm and the like according to the thickness of the transfer bar pavement slab required for construction. Taking the 42cm pavement slab as an example, each transfer bar flat joint form has the size of length 5m x width 0.05m x height 0.42m, and the steel plate thickness is 5mm.

[0039] The fixing method of the airport concrete pavement dowel bar flat joint formwork of the embodiment is as follows: the fixing foot is connected with the support frame body 201 through the third bolt 104 by using the fixing foot frame 101, after the pouring surface is measured and lofted, the steel drill 102 is vertically punched into the water stable layer, and it is locked fast through the second bolt 103;

[0040] The support frame body 201 is connected with the steel form web 306 through the first bolt 305;

[0041] After the dowel bar 4 passes through the reserved through hole 302 on the formwork, it is placed on the bar bracket 304, the easy-to-demould ring piece 303 is installed to the pouring side through the dowel bar;

[0042] The dowel bar fixing part 5 is welded on the same horizontal plane according to the interval of the reserved through hole by the square tube 501, after the dowel bar 4 passes through the dowel bar fixing part, according to the design specification requirement, each dowel bar is moved to the same size and locked fast through the positioning bolt 503.

[0043] The above described, the embodiment is only used to illustrate the technical scheme of the utility model, and is not limited to it; although the utility model is described in detail with reference to the foregoing embodiment, those skilled in the art should understand that: it still can modify the technical scheme recorded in the foregoing embodiment, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the embodiment of the utility model, therefore, all other embodiments obtained by the ordinary skilled in the art without creative labor all belong to the protection scope of the utility model.

Claims

1. An airport concrete pavement dowel bar flat joint form, characterized by, The fixed foot, the support frame body, the template, the force transmission rod and the force transmission rod fixing part are included. The template includes an integral steel form made of channel steel and a plurality of steel form webs connected to the inner side of the channel of the integral steel form, the integral steel form is used for forming pavement concrete, the integral steel form is provided with a row of reserved through holes arranged at equal intervals and used for passing through the force transmission rod, each reserved through hole is provided with a demolding ring, the inner side of the channel of the integral steel form is provided with a rod bracket corresponding to each reserved through hole, and at least part of the steel form webs are connected with the support frame body through first bolts. The support frame body includes a support frame resisting horizontal thrust generated during concrete pouring and a support web ensuring uniform and stable stress of the support frame, the support frame is bent from an L-shaped steel, the support frame includes a horizontal section, a vertical section and an inclined section, the inclined section is located above the horizontal section, the vertical section connects the horizontal section and the inclined section, the horizontal section and the inclined section are welded with the support web, the free end of the horizontal section and the free end of the inclined section are connected with the steel form web through first bolts, and the bottom surface of the horizontal section is flush with the bottom surface of the integral steel form. The fixed foot includes a fixed foot frame providing support, a steel drill vertically punched into the surface of the water stable layer to provide support and fixation, second bolts for fixing the steel drill to prevent it from sliding up and down, and third bolts connected with the support frame body to form an integral whole, the fixed foot frame has a vertical through hole, the fixed foot frame is sleeved on the steel drill and fixed on the steel drill through the second bolts, and the fixed foot frame is connected with the vertical section of the support frame through the third bolts. The force transmission rod fixing part includes a square tube, positioning tubes welded on the top surface of the square tube and arranged at equal intervals on the same horizontal plane, and positioning bolts installed on each positioning tube and used for fixing the force transmission rod, the spacing between the positioning tubes is equal to the spacing between the reserved through holes. Each reserved through hole is provided with a force transmission rod, one end of each force transmission rod protrudes from the integral steel form by the same length and away from the support frame body, and the other end of each force transmission rod is inserted into the corresponding positioning tube and locked by the positioning bolt.

2. The airport concrete pavement dowel bar flat joint form of claim 1, wherein, The demolding agent is coated on the demolding ring.

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