Temporary fixing platform for installation of pile foundation reinforcement cage

Abstract

The temporary fixing platform for installation of the pile foundation reinforcement cage comprises base bodies, the four base bodies are spliced to form a rectangular frame, each base body comprises an installation beam and a triangular rib plate, the installation beams are perpendicularly welded to one another, splicing flanges are arranged at the free ends of the installation beams, the rib plate is welded between the two installation beams, a limiting plate is arranged on the rib plate, and the limiting plates are connected with the rectangular frame. And an adjusting beam is arranged on the limiting plate in a sliding manner. According to the temporary fixing platform for installation of the pile foundation reinforcement cage, the four base bodies are mutually spliced to form the space facilitating penetration of the pile foundation reinforcement cage, the splicing flanges are adopted to facilitate installation, disassembly and assembly of the pile foundation reinforcement cage, the reinforcement cage and the temporary fixing platform can form a whole in combination with the design of the adjusting beams, and therefore the pile foundation reinforcement cage can be installed conveniently. And the sinking and floating problem of the reinforcement cage is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of large-diameter cast-in-place pile reinforcement cage installation, and more specifically, to a temporary fixing platform for installing a pile foundation reinforcement cage. Background Art

[0002] Bridge pile foundations are typically constructed using bored cast-in-place piles. The construction process for bored cast-in-place piles involves burying the steel casing, drilling with a drill rig, lowering the guide pipe, primary hole cleaning, installing the rebar cage, secondary hole cleaning, and concrete pouring. During cage installation, the presence of a thick protective concrete layer between the cage and the pile foundation, as well as the resulting drop in the pile hole bottom elevation caused by excessive hole cleaning or overdrilling during drilling, necessitates securing the cage after lowering to ensure accurate positioning.

[0003] The rebar cage is typically secured by welding hangers to the main cage bars. The tops of the hangers are pre-bent to form lugs, which are then passed through the lugs and placed on the steel casing. Alternatively, the bottom of the adjuster beam is flush with the steel casing, with both ends resting on top of a hydraulic jack or a sleeper. However, in these methods, when the weight of the rebar cage is primarily borne by the steel casing, the casing is susceptible to geological factors and can settle, causing the final pile top elevation to deviate from the designed pile top elevation.

[0004] The accuracy of pile foundation reinforcement cage installation is crucial to the final quality of the pile. Therefore, securing the cage securely and ensuring it does not sink or float during concrete pouring are crucial to ensuring pile foundation quality. While common cage installation methods prevent the cage from sinking, they cannot prevent the cage from floating during concrete pouring.

[0005] Therefore, a temporary pile foundation reinforcement cage installation fixing platform device is invented to effectively avoid the settlement problem caused by the load-bearing of the steel casing. At the same time, the device can be cyclically used for the installation of reinforcement cages of large-diameter cast-in-place piles. Utility Model Content

[0006] The utility model provides a temporary fixing platform for installing a pile foundation reinforcement cage, so as to solve the problem that the existing steel casing is easily affected by geological factors and causes inaccurate elevation of the final pile top.

[0007] According to one aspect of the utility model, a temporary fixed platform for installing a pile foundation steel cage is provided, comprising a base, four of the bases being spliced ​​together to form a rectangular frame, the base comprising a mounting beam and a triangular rib plate, the mounting beams being welded perpendicularly to each other, and a splicing flange being installed at the free end of the mounting beam, the rib plate being welded between two of the mounting beams, a limit plate being provided on the rib plate, and an adjustment beam being slidably installed on the limit plate.

[0008] Preferably, based on the above solution, the rib plate is in the shape of a right-angled triangle, two right-angled sides of the rib plate are respectively connected to the mounting beam, and the adjustment beam is located on the waistline of the rib plate.

[0009] Preferably, based on the above solution, the limit plates are two spaced apart and arranged in parallel, and the adjustment beam is adjustably arranged on the limit plates.

[0010] Preferably, based on the above solution, reinforcing ribs are provided between the limiting plate and the rib plate.

[0011] Preferably, based on the above solution, bolt holes are provided on the splicing flange, and bolts are passed through the bolt holes to lock the adjacent base bodies.

[0012] The utility model provides a temporary fixing platform for installing a pile foundation steel cage. It adopts four bases spliced ​​together to form a space for the pile foundation steel cage to pass through, and adopts a splicing flange to facilitate its installation and disassembly. Combined with the design of the adjusting beam, the steel cage and the temporary fixing platform of the present application can be formed into a whole, effectively avoiding the sinking and floating problem of the steel cage.

[0013] During operation, after the steel cage is installed in sections, an adjusting beam passes through the cage's lifting lugs to transfer the entire cage's weight to the limit plates and ribs. Because the limit plates and ribs are welded to the temporary cage fixing platform as a single unit, the cage's weight is ultimately balanced by the platform's own weight. Furthermore, the adjusting beam is prevented from moving up and down along the pile foundation hole due to the influence of the limit plates and ribs, effectively preventing the cage from sinking or floating.

[0014] The utility model provides a temporary fixed platform for installing a pile foundation steel cage, which can effectively avoid the problems of settlement caused by relying on the steel casing to bear the dead weight of the steel cage and floating of the steel cage during the pouring of pile foundation concrete. It can effectively control the deviation between the final pile top elevation and the designed pile top elevation within a controllable range, thereby ensuring the pile quality of the pile foundation.

[0015] At the same time, the temporary fixed platform device is detachable, making it extremely convenient during installation, transfer and transportation. It can be used for the installation of steel cages for large-diameter cast-in-place piles and is reusable in pile foundation construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a temporary fixed platform for installing a pile foundation reinforcement cage according to the present invention;

[0018] Figure 2 A top view of a temporary fixing platform for installing a pile foundation reinforcement cage according to the present invention;

[0019] Description of Figure Numbers:

[0020] Base 1, mounting beam 2, rib plate 3, splicing flange 4, limit plate 5, adjusting beam 6, reinforcing rib 7. DETAILED DESCRIPTION

[0021] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] It will be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections.

[0023] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0024] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0025] In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of various components of the present invention are not absolute but relative. These descriptions are applicable when these components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components are changed, these directional indications will also change accordingly.

[0026] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0028] See also Figure 1 , and combined with Figure 2 As shown, the utility model is a temporary fixed platform for installing a pile foundation steel cage, including a base 1. Four bases 1 are spliced ​​together to form a rectangular frame. The base 1 includes a mounting beam 2 and a triangular rib 3. The mounting beams 2 are welded perpendicularly to each other, and a splicing flange 4 is installed at the free end of the mounting beam 2. The rib 3 is welded between the two mounting beams 2. A limit plate 5 is provided on the rib 3, and an adjustment beam 6 is slidably installed on the limit plate 5.

[0029] Specifically, the utility model adopts the installation beam 2 made of I-beam, which is spliced ​​into a rectangle with a side length of 2.8m by 8 sections of installation beam 2. The midpoints of the four sides of the rectangle are connected by 12 high-strength bolts through connecting flanges, and the four corner points are connected by welding. 12mm thick steel plates are welded on the inside and outside of the rectangle to increase the cross-sectional area to improve the overall rigidity, in order to prevent the I-beam from twisting and becoming unstable due to excessive load.

[0030] The utility model features 18mm-thick equilateral triangular ribs 3 welded to the four corners of a rectangular surface, providing a mounting platform for a stopper plate 5. Two 5cm-thick isosceles triangular steel plates are placed on this platform as stoppers 5 for the adjustment beam 6. Each stopper plate 5 is cut using a cutting machine to create a 10.5cm x 6cm opening for the 10cm x 5cm adjustment beam 6. The openings in the stopper plates 5 are designed to be slightly larger to facilitate installation and removal of the adjustment beam 6. Two reinforcing ribs 7 are added to the second stopper to enhance its strength and rigidity. To facilitate the transfer of the device to the construction site, two lifting lugs are provided along each side of the platform.

[0031] Specifically, the rib plate 3 of the present invention is in the shape of a right triangle, the two right-angled sides of the rib plate 3 are respectively connected to the mounting beam 2, and the adjustment beam 6 is located on the waistline of the rib plate 3 to ensure balanced force.

[0032] The limit plates 5 of the present invention are two spaced apart and arranged in parallel. The adjusting beam 6 is adjustably passed through the limit plates 5 . In order to ensure the strength thereof, reinforcing ribs 7 are provided between the limit plates 5 and the rib plates 3 of the present invention.

[0033] Specifically, bolt holes are provided on the splicing flange 4 of the present invention, and bolts are passed through the bolt holes to lock the adjacent base bodies 1 .

[0034] The utility model provides a temporary fixed platform for installing a pile foundation steel cage. It adopts four bases 1 spliced ​​together to form a space for the pile foundation steel cage to pass through, and adopts a splicing flange 4 to facilitate its installation and disassembly. Combined with the design of the adjusting beam 6, the steel cage and the temporary fixed platform of the present application can be formed into a whole, effectively avoiding the sinking and floating problem of the steel cage.

[0035] During use, after the steel cage is installed in sections, the adjusting beam 6 passes through the cage lifting lugs to transfer the entire cage's weight to the limit plates 5 and ribs 3. Because the limit plates 5 and ribs 3 are welded to the temporary cage fixing platform as a single unit, the cage's weight is ultimately balanced by the platform's own weight. Furthermore, the adjusting beam 6 is prevented from moving up and down along the pile foundation hole due to the influence of the limit plates 5 and ribs 3, effectively preventing the cage from sinking or floating.

[0036] The utility model provides a temporary fixed platform for installing a pile foundation steel cage, which can effectively avoid the problems of settlement caused by relying on the steel casing to bear the dead weight of the steel cage and floating of the steel cage during the pouring of pile foundation concrete. It can effectively control the deviation between the final pile top elevation and the designed pile top elevation within a controllable range, thereby ensuring the pile quality of the pile foundation.

[0037] At the same time, the temporary fixed platform device is detachable, making it extremely convenient during installation, transfer and transportation. It can be used for the installation of steel cages for large-diameter cast-in-place piles and is reusable in pile foundation construction.

[0038] Finally, the method of this application is only a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this utility model should be included in the scope of protection of this utility model.

Claims

1. A temporary fixed platform for installing a pile foundation reinforcement cage, characterized in that: It includes a base, four of which are spliced ​​together to form a rectangular frame. The base includes a mounting beam and a triangular rib plate. The mounting beams are welded perpendicularly to each other, and a splicing flange is installed at the free end of the mounting beam. The rib plate is welded between two of the mounting beams. A limit plate is provided on the rib plate, and an adjustment beam is slidably installed on the limit plate.

2. A temporary fixed platform for installing a pile foundation reinforcement cage according to claim 1, characterized in that: The rib plate is in the shape of a right-angled triangle, two right-angled sides of the rib plate are respectively connected to the mounting beam, and the adjustment beam is located on the waistline of the rib plate.

3. A temporary fixing platform for installing a pile foundation reinforcement cage according to claim 2, characterized in that: The limiting plates are two plates that are spaced apart and arranged in parallel, and the adjusting beam is adjustably arranged on the limiting plates.

4. A temporary fixing platform for installing a pile foundation reinforcement cage according to claim 2, characterized in that: Reinforcing ribs are provided between the limiting plate and the rib plate.

5. A temporary fixing platform for installing a pile foundation reinforcement cage according to claim 1, characterized in that: The splicing flange is provided with bolt holes, and adjacent base bodies are locked by passing bolts through the bolt holes.

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