A formwork structure for a continuous beam zero block

Abstract

This utility model relates to the field of continuous beam construction technology for bridges, and particularly to a template structure for the No. 0 block of a continuous beam, comprising: an outer template, with several first through holes on the side wall of the outer template near the reinforcement-densified zone; and a widened section template, with several second through holes on the side wall of the widened section template, the extension line of the line connecting the second through holes and the first through holes falling into the reinforcement-densified zone. This template structure, by creating through holes in the outer template and the widened section template, allows the vibrator to directly enter the reinforcement-densified zone from the side, effectively avoiding the problem of the vibrator being unable to penetrate the reinforcement-densified zone in traditional methods. The design that the extension line of the line connecting the second through holes and the first through holes falls into the reinforcement-densified zone allows the vibrator to precisely act on the target area, ensuring that the concrete in that area is fully vibrated, significantly improving the adequacy of vibration, ensuring the compactness of the concrete, and effectively reducing the generation of honeycomb-like voids.

Description

Technical Field

[0001] This utility model relates to the field of bridge continuous beam construction technology, and in particular to a template structure for the No. 0 block of a continuous beam. Background Technology

[0002] When constructing new railway bridges cross existing highways or railways, cantilever prestressed concrete continuous beams are often used. Block 0 of the continuous beam is the first unit poured during cantilever construction and is usually located directly above the pier. In the construction of long-span integral continuous beam bridges, the bridge is typically divided into multiple segments, each called a "block." After the construction of block 0, it not only serves as the foundation for subsequent segment construction but also provides sufficient space for installing construction machinery such as bridge-building machines and formwork.

[0003] Because the No. 0 block of the continuous beam needs to withstand a large bending moment, the bottom of the No. 0 block near the support needs to be widened, and the reinforcement binding needs to be denser. Traditional vibrators are difficult to penetrate the dense reinforcement for vibration, which can easily lead to inadequate vibration of the poured concrete, resulting in honeycomb-like holes in local areas of the No. 0 block of the continuous beam, affecting the overall strength. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of using ordinary formwork vibrators to achieve poor vibration effects in the reinforced concrete areas during the construction of the No. 0 block of a continuous beam, and to provide a formwork structure for the No. 0 block of a continuous beam.

[0005] In a first aspect, the present invention provides a template structure for block 0 of a continuous beam, comprising:

[0006] The outer formwork has several first through holes opened on its sidewalls near the reinforced concrete zone;

[0007] The template is widened, and several second through holes are opened on the side wall of the template. The extension line of the line connecting the second through hole and the first through hole falls into the reinforcement densification zone.

[0008] This invention, by creating through holes in the outer formwork and the widened section formwork, allows the vibrator to directly enter the reinforced concrete zone from the side, effectively avoiding the problem of the vibrator struggling to penetrate the reinforced concrete zone in traditional methods. The design that the extended line connecting the second and first through holes falls within the reinforced concrete zone allows the vibrator to precisely target the area, ensuring thorough compaction of the concrete, significantly improving the effectiveness of compaction, ensuring concrete density, and effectively reducing the formation of honeycomb-like voids.

[0009] The template structure for the No. 0 block of a continuous beam provided by this utility model can also vibrate the widened section of the No. 0 block when the vibrator is withdrawn after the vibration of the reinforced zone is completed, further improving the construction efficiency.

[0010] Preferably, a cover plate is installed on the second through hole located on the upper part of the widened section template, and the cover plate is used to close the corresponding second through hole.

[0011] With this structural design, during the concrete pouring process, the cover plate is installed on the second through hole at the top of the widened section of the formwork and used to seal it. This effectively prevents concrete from overflowing or leaking out of the through hole, ensuring that the concrete can be fully filled and compacted within the formwork. This avoids voids or quality defects caused by grout leakage, thereby guaranteeing the integrity of the concrete component.

[0012] Preferably, the cover plate is hinged to the side wall of the outer template.

[0013] This structural design, with its hinged connection, allows the cover plate to be opened and closed easily. During construction, when vibration is required, workers can quickly open the cover plate and insert the vibrator into the target area; while during concrete pouring, the cover plate can be quickly closed, effectively preventing concrete leakage and significantly improving construction flexibility and efficiency.

[0014] Preferably, the number and position of the first through holes correspond one-to-one with the second through holes.

[0015] With this structural design, the first through-hole is located on the outer formwork, while the second through-hole is located on the widened section formwork. This one-to-one correspondence means that the vibrator can be inserted linearly into the reinforced concrete zone from the outer formwork through the corresponding hole. During the pouring of block 0, due to the dense reinforcement, the traditional method of inserting the vibrator from the top often fails to reach the target area. This design provides a direct path for the vibrator, allowing it to directly act on the areas requiring vibration, significantly improving the accessibility of the vibration process.

[0016] Because the first and second through holes are precisely aligned, construction workers can quickly insert the vibrator through the aligned holes without repeatedly adjusting the equipment position or finding the appropriate insertion angle. This simplified operation reduces time wasted during vibration, thereby improving construction efficiency and accelerating the overall pouring progress.

[0017] Preferably, the device further includes a connecting pipe that passes through the first through hole and the second through hole.

[0018] The connecting pipe forms a continuous channel between the first and second through holes. By providing a direct channel, the vibrator can act on the concrete in the target area more quickly and effectively, thus improving the vibration efficiency.

[0019] Preferably, the connecting pipe is a PVC pipe.

[0020] PVC pipes are preferred for connection. PVC pipes have excellent corrosion resistance, effectively resisting the erosion of chemicals that may be generated during concrete pouring, thus ensuring the stability of the connection during construction and its long service life. In addition, PVC pipes have a certain degree of temperature resistance, which can withstand the heat generated when concrete hardens, preventing deformation or damage due to temperature changes.

[0021] Preferably, the angle between the connecting pipe and the horizontal plane is 30° to 60°.

[0022] The connecting pipe is set at an inclination angle of 30° to 60°, providing an optimal insertion path for the vibrator. This angle range allows the vibrator to enter the reinforced concrete zone from the side at an appropriate inclination, ensuring that the vibrator can reach the reinforced concrete zone smoothly and accurately, improving vibration efficiency and concrete compaction.

[0023] Preferably, the outer diameter of the connecting pipe is 5~12CM.

[0024] The design of the connecting pipe with an outer diameter of 5~12cm can well accommodate the size of commonly used vibratory rods, ensuring that the vibratory rod can be smoothly inserted and move flexibly in the pipe, without being blocked due to the pipe being too narrow or inaccurate due to the pipe being too wide.

[0025] Preferably, the cover plate has a size of 15cm × 15cm.

[0026] The cover plate measures 15cm x 15cm and can completely cover the second through hole, effectively sealing the through hole at the top of the widened section of the formwork. This prevents concrete from overflowing or leaking from the through hole during the pouring process, ensuring the sealing of the through hole during the non-vibration stage.

[0027] Preferably, along the bridge direction, the spacing between adjacent second through holes is 2m to 2.5m.

[0028] The spacing between adjacent second through holes along the bridge direction is set to 2m~2.5m, which can ensure that when the vibrator is inserted into the reinforced concrete zone, the coverage is wide and uniform enough, thereby avoiding blind spots in vibration and reducing the generation of honeycomb holes or other defects.

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0030] 1. This utility model provides a template structure for the No. 0 block of a continuous beam. By opening through holes in the outer template and the widened section template, the vibrator can directly enter the reinforced concrete zone from the side, effectively avoiding the problem of the vibrator being unable to penetrate the reinforced concrete zone in traditional methods. The design that the extended line connecting the second through hole and the first through hole falls into the reinforced concrete zone allows the vibrator to act precisely on the target area, ensuring that the concrete in that area is fully vibrated, significantly improving the adequacy of vibration, ensuring the compactness of the concrete, and effectively reducing the generation of honeycomb-like voids;

[0031] 2. This utility model provides a template structure for the No. 0 block of a continuous beam. After the reinforcement zone is vibrated, the widened section of the No. 0 block can also be vibrated when the vibrator is withdrawn, which further improves the construction efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the template structure used for block 0 of the continuous beam in Example 1;

[0033] Figure 2 This is a partially enlarged view of the template structure used for block 0 of the continuous beam in Example 1;

[0034] Figure 3 This is a partial enlarged view of the template structure used for block 0 of the continuous beam in Example 2.

[0035] Marked in the image:

[0036] 1-Outer formwork, 11-First through hole, 2-Wide section formwork, 21-Second through hole, 22-Cover plate, 3-Connecting pipe, 100-Reinforced reinforcement zone. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0038] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0040] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0041] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0042] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0043] Example 1

[0044] Because the No. 0 block of the continuous beam needs to withstand a large bending moment, the bottom of the No. 0 block near the support needs to be widened, and the reinforcement binding needs to be denser. Due to the widened section and denser reinforcement zone near the support at the bottom of the No. 0 block, traditional continuous beam formwork requires the vibrator to extend from the top into the bottom of the No. 0 block, passing through the densely reinforced zone. This method is difficult to operate, as the vibrator cannot reach the target area, resulting in insufficient concrete vibration.

[0045] This embodiment provides a template structure for block 0 of a continuous beam, including:

[0046] Outer formwork 1, with several first through holes 11 opened on the side wall of outer formwork 1 near the reinforcement densification zone 100;

[0047] Specifically, the reinforced concrete zone 100 can be distributed in the bottom area of ​​block 0 (e.g., Figure 1 , Figure 2 As shown, Figure 1 The bolded dashed box indicates the specific location of a reinforced concrete zone 100, which may be the bottom left or right sides of block 0, especially the part near the support (the connection between the pier and the beam).

[0048] The widened section formwork 2 can be located on the left and right sides of the outer formwork 1. Several second through holes 21 are opened on the sidewalls of the widened section formwork 2. The extension line connecting the second through holes 21 and the first through holes 11 falls into the reinforced concrete zone 100. Specifically, for example... Figure 2 As shown, Figure 2 The dashed line connecting the second through hole 21 and the first through hole 11 is the extension of the line connecting the two. Figure 2 The dashed lines all fall within the reinforced concrete zone of 100mm.

[0049] Furthermore, such as Figure 1 , Figure 2 As shown, a cover plate 22 is installed on the second through hole 21 located on the upper part of the widened section template 2. The cover plate 22 is used to close the corresponding second through hole 21. Specifically, it could be, for example... Figure 2 A cover plate 22 is installed on the second through hole 21 at the top of the widened section formwork 2. With this structure, during the concrete pouring process, the cover plate 22 is installed on the second through hole 21 at the top of the widened section formwork 2 and is used to seal it. This effectively prevents concrete from overflowing or leaking out of the through hole, ensuring that the concrete can be fully filled and compacted in the formwork, avoiding voids or quality defects caused by grout leakage, thereby ensuring the integrity of the concrete component.

[0050] Furthermore, the cover plate 22 is hinged to the side wall of the outer formwork 1. Specifically, the cover plate 22 can be connected to the outer formwork 1 via hinges. This structural design allows the cover plate 22 to be easily opened and closed. During construction, when vibration is required, workers can quickly open the cover plate 22 and insert the vibrator into the target area; while during concrete pouring, the cover plate 22 can be quickly closed, effectively preventing concrete leakage and significantly improving construction flexibility and efficiency.

[0051] Furthermore, the number and position of the first through holes 11 correspond one-to-one with the second through holes 21. Specifically, for example... Figure 2 As shown, Figure 2The three second through holes 21 located on the widened section template 2 correspond one-to-one with the three first through holes 11 located on the outer template 1 from top to bottom, that is, the vibrator can pass through the corresponding through holes to enter the reinforcement densification zone 100 for operation.

[0052] With this structural arrangement, the first through hole 11 is located on the outer formwork, while the second through hole 21 is located on the widened section formwork 2. This one-to-one correspondence means that the vibrator can be inserted linearly into the reinforced concrete zone 100 from the outer formwork through the corresponding hole. During the pouring of block 0, due to the dense arrangement of the reinforcing bars, the traditional method of inserting the vibrator from the top often makes it difficult to reach the target area. This design provides a direct path for the vibrator, allowing it to directly act on the areas requiring vibration, significantly improving the accessibility of the vibration process.

[0053] Because the first through hole 11 and the second through hole 21 are precisely aligned, construction workers can quickly insert the vibrator through the aligned holes without repeatedly adjusting the equipment position or finding the appropriate insertion angle. This simplified operation reduces time wasted during vibration, thereby improving construction efficiency and accelerating the overall pouring progress.

[0054] Furthermore, in this embodiment, the cover plate 22 has a size of 15cm × 15cm. Setting the cover plate 22 to 15cm × 15cm can completely cover the second through hole 21, effectively sealing the through hole at the top of the widened section template 2, preventing concrete from overflowing or leaking from the through hole during the pouring process, and ensuring the sealing of the through hole during the non-vibration stage.

[0055] Furthermore, in this embodiment, along the bridge direction, the spacing between adjacent second through holes 21 is 2m to 2.5m, which can ensure that when the vibrator is inserted into the reinforced concrete zone 100, the coverage is sufficiently wide and uniform, thereby avoiding vibration blind spots and reducing the generation of honeycomb holes or other defects.

[0056] This embodiment, by creating through holes in the outer formwork 1 and the widened section formwork 2, allows the vibrator to directly enter the reinforced concrete zone 100 from the side, effectively avoiding the problem of the vibrator being unable to penetrate the reinforced concrete zone 100 in traditional methods. The design that the extended line connecting the second through hole 21 and the first through hole 11 falls into the reinforced concrete zone 100 allows the vibrator to precisely act on the target area, ensuring that the concrete in that area is fully vibrated, significantly improving the adequacy of vibration, ensuring the compactness of the concrete, and effectively reducing the formation of honeycomb-like voids.

[0057] The template structure for block 0 of the continuous beam provided in this embodiment can also vibrate the widened section of block 0 when the vibrator is removed after the reinforcement densification zone 100 is completed, which further improves the construction efficiency.

[0058] Example 2

[0059] Based on Embodiment 1, the template structure for the 0th block of the continuous beam provided in this embodiment further includes a connecting pipe 3, which passes through the first through hole 11 and the second through hole 21. Specifically, for example... Figure 3 As shown, Figure 3 Three connecting pipes 3 are shown on one side of the outer and middle formwork 1. The connecting pipes 3 can be inserted into the target area from the outside to the inside according to the correspondence of the through holes opened in the widened section formwork 2 and the outer formwork 1. The connecting pipes 3 form a continuous channel between the first through hole 11 and the second through hole 21. By providing a direct channel, the vibrator can act on the concrete in the target area more quickly and effectively, thus improving the vibration efficiency.

[0060] Furthermore, the connecting pipe 3 is a PVC pipe. Preferably, the connecting pipe 3 is a PVC pipe, as PVC pipe has good corrosion resistance and can effectively resist the erosion of chemicals that may be generated during concrete pouring, thus ensuring the stability and long service life of the connecting pipe 3 during construction. In addition, PVC pipe has a certain degree of temperature resistance, which can withstand the heat generated during concrete hardening, preventing deformation or damage due to temperature changes.

[0061] Furthermore, the angle between the connecting pipe 3 and the horizontal plane is 30°~60°, and the outer diameter of the connecting pipe 3 is 5~12cm. The 30°~60° inclination of the connecting pipe 3 provides an optimal insertion path for the vibrator. This angle range allows the vibrator to enter the reinforced concrete zone 100 from the side at an appropriate angle, ensuring smooth and precise access to the zone, improving vibration efficiency and concrete compaction. The 5~12cm outer diameter of the connecting pipe 3 is well-suited to the dimensions of commonly used vibrators, ensuring smooth insertion and flexible movement within the pipe, without obstruction due to excessive narrowness or inaccurate operation due to excessive width.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A formwork structure for a continuous beam No. 0 block, characterized by, include: The outer formwork (1) has several first through holes (11) on its side wall near the reinforcement densification zone (100). The widened section template (2) has several second through holes (21) on its side wall. The extension line of the connection between the second through hole (21) and the first through hole (11) falls into the reinforcement densification zone (100).

2. The template structure for block 0 of a continuous beam according to claim 1, characterized in that, A cover plate (22) is installed on the second through hole (21) located on the upper part of the widened section template (2), and the cover plate (22) is used to close the corresponding second through hole (21).

3. A template structure for block 0 of a continuous beam according to claim 2, characterized in that, The cover plate (22) is hinged to the side wall of the outer template (1).

4. A template structure for block 0 of a continuous beam according to claim 1, characterized in that, The number and position of the first through hole (11) correspond one-to-one with the second through hole (21).

5. A template structure for block 0 of a continuous beam according to claim 4, characterized in that, It also includes a connecting pipe (3), which passes through the first through hole (11) and the second through hole (21).

6. A template structure for block 0 of a continuous beam according to claim 5, characterized in that, The connecting pipe (3) is a PVC pipe.

7. A template structure for block 0 of a continuous beam according to claim 5, characterized in that, The angle between the connecting pipe (3) and the horizontal plane is 30°~60°.

8. A template structure for block 0 of a continuous beam according to claim 5, characterized in that, The outer diameter of the connecting pipe (3) is 5~12CM.

9. A template structure for block 0 of a continuous beam according to claim 2, characterized in that, The cover plate (22) has a size of 15cm × 15cm.

10. A template structure for block 0 of a continuous beam according to any one of claims 1-9, characterized in that, Along the longitudinal direction of the bridge, the distance between adjacent second through holes (21) is 2m~2.5m.

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