Middle heightening concrete pouring formwork for bridge jacking pier column

Abstract

The invention relates to the field of bridge jacking transformation, in particular to a middle heightening concrete pouring formwork for a bridge jacking pier stud, the middle heightening concrete pouring formwork for the bridge jacking pier stud comprises a plurality of unit formworks, and each unit formwork comprises a U-shaped formwork and an edge sealing formwork; the edge sealing mold is used for sealing the U-shaped mold to form a cylindrical structure, a connecting device is arranged between the edge sealing mold and the U-shaped mold, the connecting device is used for fixing the edge sealing mold and the U-shaped mold, and the adjacent unit molds are stacked to form a concrete pouring template; each edge sealing die is provided with a feeding opening, the feeding openings are used for being connected with concrete hoppers, the concrete hoppers are matched with the feeding openings in an inserted connection mode, the feeding openings are used for adding concrete into the unit dies, sealing devices are arranged at the feeding openings, and the sealing devices are used for sealing the feeding openings, so that the purposes of shortening the concrete pouring time and improving the concrete pouring efficiency are achieved. And the construction period of bridge jacking is shortened.

Description

Technical Field

[0001] The present application relates to the field of bridge lifting and reconstruction, and in particular to a concrete pouring formwork for increasing the height of the middle of a bridge lifting pier. Background Art

[0002] At present, bridge broken column jacking is a unique construction method in bridge lifting and reconstruction construction. It mainly adopts the method of cutting the bridge piers of the existing bridge structure, and uses jacking equipment to jack up the broken columns, cap beams and upper structures as a whole to the designed elevation, and then reinforces and connects the cut upper and lower parts of the piers, so as to achieve the purpose of raising the bridge elevation. The broken column jacking technology used is economical, efficient, easy to operate, and avoids the impact of demolition and reconstruction on the environment and traffic. This not only improves the use function of the existing bridge structure, but also saves the environment.

[0003] The existing broken column reinforcement and splicing is a key link in the bridge broken column lifting process. The traditional pier column splicing is to roughen the concrete of the broken column section, overlap and connect the pier column steel bars, and then install spiral stirrups as required, and then set up the formwork to pour concrete. When pouring concrete, a pouring hole is opened on the side wall of the top of the formwork, and the pouring hole is connected to the pouring hopper for pouring concrete. After pouring a certain amount of concrete, the pouring hopper is removed, and then the poured concrete is vibrated through the pouring hole with a vibrating rod. After the vibration is completed, the pouring hopper is connected to the pouring hole and pouring is continued. After pouring a certain amount of concrete, the pouring hopper is pulled out and vibrated again, and then the above steps are repeated for multiple pouring and vibration.

[0004] The above-mentioned prior art solutions have the following defects: due to the repeated connection of the vibrating rod and the pouring hopper, the pouring time of the concrete is too long, resulting in a long construction period for the bridge jacking. Summary of the invention

[0005] In order to shorten the construction period of bridge jacking, the present application provides a concrete pouring template for increasing the height of the middle of the bridge jacking pier.

[0006] The above technical objectives of this application are achieved through the following technical solutions: A concrete pouring template for the middle height increase of a bridge jacking pier column, comprising a plurality of unit molds, each of which comprises a U-shaped mold and an edge-sealing mold, the edge-sealing mold is used to close the U-shaped mold to form a cylindrical structure, a connecting device is provided between the edge-sealing mold and the U-shaped mold, the connecting device is used to fix the edge-sealing mold and the U-shaped mold, and adjacent unit molds are stacked to form a concrete pouring template; Each of the edge sealing molds is provided with a feeding port, which is used to connect to a concrete hopper. The concrete hopper is plugged into the feeding port, and the feeding port is used to add concrete into the unit mold. A closing device is provided at the feeding port, and the closing device is used to close the feeding port.

[0007] Furthermore, the closing device includes a closing plate and a fixing bar, at least two fixing bars are provided, the two fixing bars are symmetrically arranged on the side wall of the feeding port, each fixing bar is provided with a closing groove, the closing plate is plugged into the closing groove, the side wall of the closing groove is provided with a closing bolt, the closing bolt passes through the side wall of the closing groove and abuts against the closing plate, and the closing bolt is threadedly connected to the fixing bar.

[0008] Furthermore, the closing plate is fixedly connected with a sealing gasket, and the sealing gasket is used to seal the gap between the closing plate and the edge sealing mold.

[0009] Furthermore, a positioning device is provided between adjacent unit molds, and the positioning device is used to ensure the accuracy of the position between adjacent unit molds; The positioning device comprises a positioning block and a positioning groove. The upper end of the U-shaped mold is provided with the positioning groove, and the lower end of the U-shaped mold is fixedly connected to the positioning block. When two adjacent U-shaped molds are abutted, the positioning groove and the positioning block are plugged and matched.

[0010] Furthermore, an auxiliary block is provided on the outside of the U-shaped mold, one end of the auxiliary block is fixedly connected to the outer side wall of the U-shaped mold, and the other end abuts against the outer side wall of the adjacent U-shaped mold. The auxiliary block is used to assist the adjacent U-shaped mold positioning block to be plugged into the positioning groove.

[0011] Furthermore, the connecting device includes a connecting screw and a connecting nut. After the connecting screw passes through the U-shaped mold and the edge-sealing mold, it is threadedly connected to two connecting nuts respectively, and the two connecting nuts are respectively abutted against the U-shaped mold and the edge-sealing mold.

[0012] Furthermore, steel pipes and mountain-shaped clamps are arranged between the connecting nut and the U-shaped mold and the edge sealing mold. At least two steel pipes are arranged, and both steel pipes are engaged with the mountain-shaped clamps. The connecting screw is plug-engaged with the mountain-shaped clamps.

[0013] Furthermore, each of the U-shaped forms is provided with a vibrator, which is fixedly connected to the U-shaped form and is used to fully vibrate the concrete in the form.

[0014] In summary, this application has the following technical effects: 1. By setting up several unit molds, and each unit mold includes a U-shaped mold and an edge-sealing mold, the molds can be quickly spliced; then a feeding port is opened on each edge-sealing mold, and the material is fed through the feeding port. When the material is fed to the feeding port, the concrete hopper is separated from the feeding port, and then the vibrating rod is passed through the feeding port to vibrate the concrete. The floating slurry generated by the vibration flows out of the mold through the feeding port. At the same time, the concrete hopper is plugged and matched with the feeding port of the upper adjacent unit mold, and then the feeding port is closed with a closing device. The closed feeding port prevents concrete leakage, so that the concrete can be poured layer by layer, and the floating slurry can be discharged in time when the concrete is vibrated, and the installation of the concrete hopper and the upper feeding port is completed, thereby shortening the concrete pouring time and shortening the construction period of bridge jacking; 2. By setting up a positioning device, using positioning blocks and positioning grooves, the upper and lower unit molds will not be skewed after being spliced, thus avoiding the misalignment of the concrete pier column after pouring and solidification; 3. By setting up a connecting device, the U-shaped mold and the edge banding mold can be fixed by connecting screws and steel pipes, and the upper and lower adjacent unit molds can be positioned to avoid tilting of the unit molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a concrete pouring template for the middle height increase of a bridge jacking pier column in the present application when in use; Figure 2 It is a structural schematic diagram of the casting formwork of this application; Figure 3 It is a structural diagram of the unit model of this application; Figure 4 It is a schematic diagram of the structure of the closure device of the present application; Figure 5 is a schematic diagram of the structure of the positioning device in this application; Figure 6 yes Figure 2 A partial enlarged view of part A.

[0016] In the figure, 1. U-shaped mold; 2. Edge sealing mold; 21. Feeding port; 3. Concrete hopper; 4. Closing device; 41. Closing plate; 42. Fixing strip; 43. Closing bolt; 5. Sealing gasket; 6. Positioning device; 61. Positioning groove; 62. Positioning block; 7. Auxiliary block; 8. Connecting device; 81. Connecting screw; 82. Connecting nut; 83. Steel pipe; 84. Mountain-shaped card; 9. Vibrator. DETAILED DESCRIPTION

[0017] The present application is further described in detail below in conjunction with the accompanying drawings.

[0018] Reference Figure 1 and Figure 2 The present embodiment provides a concrete pouring formwork for the middle height increase of a bridge jacking pier column, comprising a plurality of unit molds, each of which comprises a U-shaped mold 1 and an edge-sealing mold 2, the edge-sealing mold 2 being used to close the U-shaped mold 1 to form a cylindrical structure. In the present embodiment, the U-shaped mold 1 comprises two side edges and a bottom edge, the two side edges are perpendicular to the bottom edge and fixedly connected, and the side of the two side edges away from the bottom edge abuts against the edge-sealing mold 2; a connecting device 8 is provided between the edge-sealing mold 2 and the U-shaped mold 1, the connecting device 8 is used to fix the edge-sealing mold 2 and the U-shaped mold 1, and adjacent unit molds are stacked to form a concrete pouring formwork; each of the edge-sealing molds 2 is provided with a feeding port 21, the feeding port 21 is used to connect a concrete hopper 3, the concrete hopper 3 is plugged into the feeding port 21, the feeding port 21 is used to add concrete into the unit mold, a closing device 4 is provided at the feeding port 21, the closing device 4 is used to close the feeding port 21, and the feeding port 21 outlet can also be used to discharge the floating slurry generated by concrete vibration, so as to improve the quality of the concrete after solidification.

[0019] Reference Figure 3 and Figure 4 The closing device 4 includes a closing plate 41 and a fixing strip 42. At least two fixing strips 42 are provided. The two fixing strips 42 are symmetrically arranged on the side wall of the feeding port 21. Each fixing strip 42 is provided with a closing groove. The closing plate 41 is plugged into the closing groove. The side wall of the closing groove is provided with a closing bolt 43. The closing bolt 43 passes through the side wall of the closing groove and abuts against the closing plate 41. The closing bolt 43 is threadedly connected to the fixing strip 42. The closing plate 41 is fixedly connected with a sealing gasket 5, which is used to seal the gap between the closing plate 41 and the edge sealing mold 2.

[0020] Reference Figure 3 and Figure 5 A positioning device 6 is provided between adjacent unit molds. The positioning device 6 is used to ensure the accurate position between adjacent unit molds. The positioning device 6 includes a positioning block 62 and a positioning groove 61. The upper end of the U-shaped mold 1 is provided with a positioning groove 61, and the lower end of the U-shaped mold 1 is fixedly connected to the positioning block 62. When two adjacent U-shaped molds 1 are abutted, the positioning groove 61 and the positioning block 62 are plugged and matched. The plug-in cooperation of the positioning groove 61 and the positioning block 62 fixes the positions of the two adjacent U-shaped molds 1, thereby avoiding the misalignment between the two adjacent U-shaped molds 1 and causing the concrete piers solidified after pouring to be misaligned; an auxiliary block 7 is provided on the outer side of the U-shaped mold 1, one end of the auxiliary block 7 is fixedly connected to the outer side wall of the U-shaped mold 1, and the other end abuts against the outer side wall of the adjacent U-shaped mold 1. The auxiliary block 7 is used to assist the adjacent U-shaped mold 1 positioning block 62 to plug and match with the positioning groove 61.

[0021] Reference Figure 2 and Figure 6The connecting device 8 includes a connecting screw and a connecting nut 82. The connecting screw 81 passes through the U-shaped mold 1 and the edge banding mold 2 and is threadedly connected with two connecting nuts 82 respectively. The two connecting nuts 82 are respectively abutted against the U-shaped mold 1 and the edge banding mold 2; steel pipes 83 and mountain-shaped clips 84 are arranged between the connecting nut 82 and the U-shaped mold 1 and the edge banding mold 2. At least two steel pipes 83 are arranged, and the two steel pipes 83 are both engaged with the mountain-shaped clips 84, and the connecting screw 81 is plug-engaged with the mountain-shaped clips 84.

[0022] Reference Figure 1 and Figure 2 Each U-shaped mold 1 is provided with a vibrator, and the vibrator 9 is fixedly connected to the U-shaped mold 1. The vibrator 9 is used to fully vibrate the concrete in the mold; the vibrators 9 are installed on the two side edges and one bottom edge of the U-shaped mold 1.

[0023] The implementation principle of a formwork for increasing the height of the middle concrete casting of a bridge jacking pier column in an embodiment of the present application is as follows: when using the formwork to cast the concrete pier column, first move the U-shaped form 1 close to the lower half of the pier column, and then move the adjacent U-shaped form 1 to the top of the U-shaped form 1, use the auxiliary block 7 to position the two side edges of the U-shaped form 1, and then when the auxiliary block 7 at the bottom edge of the U-shaped form 1 abuts against the adjacent U-shaped form 1, the positions of the two U-shaped forms 1 are aligned up and down, and then the adjacent U-shaped form 1 is pushed to abut against the U-shaped form 1 below, so that the positioning block 62 is plugged into the positioning groove 61, and the above steps are repeated to sequentially place a plurality of U-shaped forms 1 in abutment. Splice, then move the edge banding mold 2 and the U-shaped mold 1 for splicing, pass one end of the connecting screw 81 through the U-shaped mold 1, and pass the connecting screw through the edge banding mold 2. After all the edge banding molds 2 are installed, move the two steel pipes 83 to both sides of the connecting screw, and use the mountain-shaped clip 84 to clamp the two steel pipes 83, and finally use the tool to rotate the connecting nut 82 and the connecting screw 81 for threaded connection, apply a certain torque to the connecting nut 82, so that the mountain-shaped clip 84 and the steel pipe 83 are in contact with the template and clamp the edge banding mold 2 and the U-shaped mold 1, and use the steel pipe 83 to fix the vertical direction of the template to avoid the up and down misalignment of the template during the vibration process.

[0024] When pouring concrete after the template is assembled, first plug the concrete hopper 3 into the lowest feeding port 21, and then add concrete into the template through the concrete hopper 3. When the concrete is gradually added to the same height as the feeding port 21, separate the concrete hopper 3 from the feeding port 21, and then pass the vibrating rod through the feeding port 21 to vibrate the concrete. The floating slurry generated by the vibration flows out of the template through the feeding port 21. At the same time, the concrete hopper 3 is plugged and matched with the feeding port 21 of the adjacent unit mold above. During the concrete vibration process, start the vibrator 9 to vibrate the template, so that the concrete in the template is more vibrated. After the vibration is completed, the closing plate 41 is moved and inserted into the closing groove, and then the closing bolt 43 is rotated to abut against the closing plate 41, so that the sealing gasket 5 abuts against the edge of the feeding port 21, and the feeding port 21 is sealed by the sealing gasket 5. At this time, concrete can continue to be added to the template through the concrete hopper 3, thereby realizing the layered pouring and vibration of the concrete, and the installation of the vibration and the concrete hopper 3 can be completed at the same time, which greatly speeds up the use efficiency, shortens the pouring time of the concrete, and shortens the construction period of the bridge jacking; and the floating slurry generated during the layered vibration is discharged in time, thereby improving the pouring quality of the concrete.

[0025] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A concrete pouring formwork for the middle height increase of bridge jacking piers, characterized by: It comprises a plurality of unit molds, each of which comprises a U-shaped mold (1) and an edge-sealing mold (2), the edge-sealing mold (2) being used to seal the U-shaped mold (1) to form a cylindrical structure, a connecting device (8) being provided between the edge-sealing mold (2) and the U-shaped mold (1), the connecting device (8) being used to fix the edge-sealing mold (2) and the U-shaped mold (1), and adjacent unit molds being stacked to form a concrete pouring template; Each of the edge sealing molds (2) is provided with a feeding port (21), the feeding port (21) is used to connect to a concrete hopper (3), the concrete hopper (3) is plugged into and matched with the feeding port (21), the feeding port (21) is used to add concrete into the unit mold, and a closing device (4) is provided at the feeding port (21), the closing device (4) is used to close the feeding port (21).

2. A concrete pouring formwork for the middle height increase of bridge jacking piers according to claim 1, characterized in that: The closing device (4) comprises a closing plate (41) and a fixing strip (42). At least two fixing strips (42) are provided. The two fixing strips (42) are symmetrically arranged on the side wall of the feeding port (21). Each fixing strip (42) is provided with a closing groove. The closing plate (41) is plugged into the closing groove. The side wall of the closing groove is provided with a closing bolt (43). The closing bolt (43) passes through the side wall of the closing groove and abuts against the closing plate (41). The closing bolt (43) is threadedly connected to the fixing strip (42).

3. The concrete pouring formwork for the middle height increase of bridge jacking piers according to claim 2 is characterized by: The closing plate (41) is fixedly connected with a sealing gasket (5), and the sealing gasket (5) is used to seal the gap between the closing plate (41) and the edge sealing mold (2).

4. The concrete pouring formwork for the middle height increase of bridge jacking piers according to claim 1 is characterized by: A positioning device (6) is provided between adjacent unit molds, and the positioning device (6) is used to ensure that the positions between adjacent unit molds are accurate; The positioning device (6) comprises a positioning block (62) and a positioning groove (61); the upper end of the U-shaped mold (1) is provided with the positioning groove (61); the lower end of the U-shaped mold (1) is fixedly connected to the positioning block (62); when two adjacent U-shaped molds (1) are abutted, the positioning groove (61) and the positioning block (62) are plugged and matched.

5. The concrete pouring formwork for the middle height increase of bridge jacking piers according to claim 4 is characterized by: An auxiliary block (7) is arranged on the outside of the U-shaped mold (1); one end of the auxiliary block (7) is fixedly connected to the outer side wall of the U-shaped mold (1), and the other end abuts against the outer side wall of the adjacent U-shaped mold (1); the auxiliary block (7) is used to assist the adjacent U-shaped mold (1) in inserting and fitting the positioning block (62) with the positioning groove (61).

6. The concrete pouring formwork for the middle height increase of bridge jacking piers according to claim 1 is characterized by: The connecting device (8) comprises a connecting screw and a connecting nut (82); the connecting screw (81) passes through the U-shaped mold (1) and the edge-sealing mold (2) and is threadedly connected to two connecting nuts (82) respectively; the two connecting nuts (82) are respectively in contact with the U-shaped mold (1) and the edge-sealing mold (2).

7. The concrete pouring formwork for the middle height increase of bridge jacking piers according to claim 6 is characterized by: A steel pipe (83) and a mountain-shaped clamp (84) are arranged between the connecting nut (82) and the U-shaped mold (1) and the edge-sealing mold (2); at least two steel pipes (83) are arranged; both steel pipes (83) are engaged with the mountain-shaped clamp (84); and the connecting screw rod (81) is plug-engaged with the mountain-shaped clamp (84).

8. The concrete pouring formwork for the middle height increase of bridge jacking piers according to claim 1 is characterized by: Each of the U-shaped molds (1) is provided with a vibrator, the vibrator (9) is fixedly connected to the U-shaped mold (1), and the vibrator (9) is used to fully vibrate the concrete in the mold.

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