A closed drill hole cast-in-place pile pouring platform

Abstract

The present application relates to the field of bored pile construction technology, in particular to a closed type bored pile pouring platform, which comprises a platform base, a guide pipe platform and a guide device, the platform base is welded into a rectangular frame by high-strength steel material to provide stable support for the whole pouring platform, the guide pipe platform is formed into a well-shaped structure by two parallel and opposite main rods and the supporting steel bars on both sides of the main rods, the guide pipe platform is welded with horse path rods and inclined steel bars to form a perspective steel mesh, which can not only enhance the rigidity of the guide pipe platform, but also prevent the falling of construction personnel or objects, and facilitate the observation of the situation inside the pile hole by the construction personnel, the guide device is used for guiding and positioning the guide pipe, so that the guide pipe can be accurately lowered to the center position of the pile hole, and the accuracy of the guide pipe is ensured. The platform has the advantages of improving the stability of the pouring platform, ensuring the accurate positioning of the guide pipe, realizing the internal visual observation of the pile hole, and improving the construction safety, etc.

Description

Technical Field

[0001] The invention relates to the technical field of bored cast-in-place pile construction, in particular to a visually enclosed bored cast-in-place pile casting platform. Background Art

[0002] In highway bridge construction, pile foundation construction is a critical step, and its quality directly impacts the stability and durability of the entire bridge. Typically, highway bridge projects involve numerous pile foundations, each requiring a substantial amount of concrete pouring. Traditionally, the conduit installation platform is constructed on a casing. It consists of a simple welded structure of thick steel plates and several I-beams. The center of the steel plate is cut to accommodate the conduit's cross-section.

[0003] However, this traditional pouring platform has many drawbacks. First, the platform's construction is relatively crude, resulting in insufficient stability during use and difficulty adapting to complex geological conditions. Especially when encountering soft soil or water impact, the platform is prone to tilting or displacement, seriously affecting the pouring quality. Second, the conduit is only fixed by hoisting. During the placement process, the conduit is prone to shaking or shifting. This not only causes concrete segregation and affects the bearing capacity of the pile foundation, but also may cause pipe blockage, increasing construction difficulty and cost. In addition, the traditional platform has poor sealing and large overhanging areas on both sides, which puts construction workers at risk of falling during operation, and materials and tools are easily dropped, posing a threat to construction safety. Finally, the traditional platform cannot directly observe the internal conditions of the pile hole, making it difficult for construction workers to understand the flow state and pouring status of the concrete in real time. This can easily lead to discontinuous concrete pouring and defects in the pile foundation.

[0004] Therefore, developing a pile foundation casting platform that can improve casting efficiency, ensure construction safety, enhance conduit fixation and have good sealing properties has become an urgent problem to be solved in the current highway bridge engineering construction. Summary of the Invention

[0005] In response to the above-mentioned defects and problems, the present invention provides a visually enclosed bored pile casting platform, which has the advantages of improving the stability of the casting platform, ensuring the precise positioning of the conduit, realizing visual observation inside the pile hole, and improving construction safety.

[0006] The solution adopted by the present invention to solve its technical problems is: a visually closed bored pile casting platform, including a guide tube, a platform foundation and a guide tube platform, the platform foundation as the base of the casting platform is supported on a steel casing in the pile foundation hole, the guide tube platform is supported above the platform foundation, and a guiding device is provided at the center of the guide tube platform for guiding the guide tube to be limited and lowered to the center of the pile foundation hole; the guide tube platform includes two parallel and opposite main rods, the ends of the two main rods are connected by a connecting rod, and two sets of parallel supporting steel bars are vertically welded on both sides of the main rods, and the main rods and the supporting steel bars are arranged in a well-shaped structure. The center of the crisscross structure in the conduit platform serves as a guide area for installing a guide device. Several runway poles are welded on the main pole and the supporting steel bars, arranged outward with the guide area as the center. The ends of the vertically adjacent runway poles are connected one by one by oblique steel bars. The runway poles and the oblique steel bars expand outward in equal proportion with the guide area as the center to form a transparent steel mesh. The guide device is installed in the guide area of ​​the conduit platform through the innermost runway pole; the conduit is positioned and guided by the guide device on the conduit platform to be placed in the center of the pile foundation hole. The transparent steel mesh in the casting platform provides support and a perspective observation of the situation in the pile foundation hole when the conduit is placed.

[0007] Furthermore, the guiding device is a positioning guide box, which is positioned and installed on the catheter platform through the four innermost horse rods. The positioning guide box includes a box frame with upper and lower openings. The upper and lower opening edges of the box frame are provided with inward borders, and the width of the lower border is greater than that of the upper border. A lower positioning plate is fixed at the lower border, and an upper positioning plate is horizontally movably mounted on the upper border. Guide holes matching the outer diameter of the catheter are provided in the centers of the upper and lower positioning plates. A calibration seat is provided on the lower positioning plate, and a calibration rod is provided on the upper positioning plate. The calibration rod cooperates with the calibration seat to correct the position of the upper positioning plate so that the centers of the upper and lower guide holes are completely corresponding.

[0008] Furthermore, the calibration seat includes a conical groove block fixed on the lower positioning plate, with an inverted conical groove in the conical groove block, and a threaded hole is provided below the conical groove and through the lower positioning plate and the lower frame. The calibration rod is composed of a long bolt, and the position of the long bolt near the tail end is fixedly sleeved with a conical sleeve matching the inner diameter of the conical groove, and the tail end of the long bolt is set to a threaded section adapted to the threaded hole, and the upper positioning plate is provided with calibration holes corresponding to the upper and lower positions of the calibration seat, the maximum outer diameter of the conical sleeve is smaller than the aperture of the calibration hole, and the bolt head size at the top of the long bolt is larger than the aperture of the calibration hole; when calibrating the position of the upper positioning plate, the long bolt is inserted downward through the calibration hole, and after its tail end enters the conical groove, it drives the upper positioning plate to move and calibrate through the action force between the tail end and the inclined surface of the conical groove, and positions the upper positioning plate through the cooperation of the threaded hole and the threaded section.

[0009] Furthermore, the upper positioning plate has four degrees of freedom in the movable frame groove, and the calibration seat and calibration rod are arranged in the middle position of the upper positioning plate or the lower positioning plate in the four directions of front, back, left and right with the guide hole as the center.

[0010] Furthermore, the guiding device is a conduit buckle plate, which is composed of two symmetrically arranged half buckles, and the innermost group of horseway rods are hinged steel bars. The outer side of the half buckle plate is hingedly installed in the center of the conduit platform through the hinged steel bars. After the two half buckle plates are spliced ​​together, a lower pipe hole matching the outer diameter of the conduit is formed in the center, and a steel handrail is welded on the half buckle plate.

[0011] Furthermore, the platform foundation is welded into a rectangular frame using high-strength steel, reinforcing ribs and frame diagonal bracing steel bars are welded at the corners of the rectangular frame, and a platform support frame pointing to the center of the rectangular frame is horizontally welded and fixed inside the rectangular frame, and the two main poles of the catheter platform are erected on the platform support frame.

[0012] Furthermore, a middle frame is provided below the upper frame, and a movable frame groove is formed between the upper frame and the middle frame, and the upper positioning plate is movably mounted in the movable frame groove.

[0013] Furthermore, a lifting lug is provided at the end of the main rod.

[0014] The beneficial effects of the present invention are as follows: high construction safety: the foundation is welded into a rectangular frame with high-strength steel, and reinforcing ribs and frame diagonal bracing steel bars are welded at the corners to form a solid support structure, which can stably support the steel casing in the pile foundation hole, effectively adapt to complex geological conditions, avoid tilting or displacement under soft soil foundation or water flow impact, provide a stable working platform for construction workers, and reduce construction safety risks; the transparent steel mesh on the guide tube platform forms a fence above the pile foundation hole, effectively preventing construction workers or objects from falling, reducing the occurrence of accidents, and improving construction safety;

[0015] Precise catheter positioning: The guiding device uses a positioning guide box or a catheter buckle plate. The positioning guide box, through the cooperation of the calibration seat and the calibration rod, accurately corrects the position of the upper positioning plate, so that the centers of the upper and lower guide holes are completely aligned, ensuring that the catheter can be stably lowered along the axis of the pile foundation hole, accurately guiding the catheter to the center of the pile foundation hole, and improving the construction quality of the pile foundation; the catheter buckle plate is composed of two symmetrically arranged half buckle plates. The half buckle plates can be rotated outward to open to form an operating space. After the catheter is lowered to the set position, they are spliced ​​together to form a complete lower pipe hole. The lower pipe hole guides and positions the catheter, limits the horizontal deviation of the catheter, and achieves precise positioning of the catheter;

[0016] Convenient observation: The design of the transparent steel mesh not only provides support for the conduit platform, but also makes it convenient for construction workers to observe the situation inside the pile foundation hole, such as the flow state of concrete and the pouring height, so that construction workers can grasp the pouring situation in real time, promptly discover and solve problems that may arise during the pouring process, ensure the continuity of concrete pouring and the quality of the pile foundation, and avoid problems such as discontinuous pouring and defects in the pile foundation due to the lack of intuitive observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the explosion structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the catheter platform and the catheter buckle frame plate of the present invention;

[0021] Figure 5 This is a structural schematic diagram of a positioning guide box of the present invention;

[0022] Figure 6 This is a schematic diagram of the internal structure of the positioning guide box of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the calibration seat and calibration rod of the present invention;

[0024] Figure 8 This is a schematic diagram of the box frame structure of the present invention;

[0025] Figure 9 This is a schematic diagram of the cooperation between the positioning guide box and the catheter of the present invention.

[0026] In the figure: 1. Conduit; 2. Steel casing; 3. Platform foundation; 31. Rectangular frame; 32. Reinforcement ribs; 33. Frame diagonal bracing steel bars; 34. Platform support frame; 4. Conduit platform; 41. Main pole; 42. Connecting rod; 43. Lifting lug; 44. Horseway pole; 45. Diagonal steel bars; 46. Support steel bars; 47. Hinge steel bars; 5. Conduit buckle plate; 51. Half buckle plate; 52. Lower pipe hole; 53. Steel bar handrail; 6. Positioning guide box; 61. Box frame; 62. Middle frame; 63. Movable frame slot; 64. Lower positioning plate; 65. Upper positioning plate; 66. Calibration seat; 661. Cone groove block; 662. Threaded hole; 67. Calibration rod; 671. Long bolt; 672. Cone sleeve; 673. Threaded segment; 68. Calibration hole. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and examples.

[0028] See also Figure 1-9 The present invention provides a technical solution for a visually enclosed bored pile casting platform.

[0029] Example 1: Figure 1-4 As shown, a visually enclosed bored pile pouring platform mainly includes a conduit 1, a steel casing 2, a platform foundation 3 and a conduit platform 4. First, the platform foundation 3 is built on the steel casing 2 in the pile foundation hole. The platform foundation 3 is supported on the steel casing 2 in the pile foundation hole as the base of the pouring platform. The platform foundation 3 is welded into a rectangular frame 31 using high-strength steel. A platform support frame 34 pointing to the center of the rectangular frame 31 is horizontally welded and fixed in the rectangular frame 31. Reinforcement ribs 32 and frame diagonal bracing steel bars 33 are welded at the corners of the rectangular frame 31 to enhance the stability and bearing capacity of the platform foundation 3 to adapt to complex geological conditions and avoid soft soil foundations or water impact. The guide tube platform 4 is arranged above the platform foundation 3, and specifically includes two parallel and opposite main rods 41, the main rod 41 is arranged on the rectangular frame 31 of the platform foundation 3, and the two main rods 41 are set on the platform support frame 34, and the rectangular frame 31 and the platform support frame 34 provide stable support for the main rod 41. The ends of the two main rods 41 are connected by connecting rods 42 perpendicular to the main rods 41, thereby forming a ladder-shaped main structure. On both sides of the main rod 41, there are respectively welded flat rods perpendicular to the main rod 41. Two groups of supporting steel bars 46 are arranged in a row, and the main rod 41 and the supporting steel bars 46 form a well-shaped structure and are stably supported on the platform foundation 3. The center of the well-shaped structure is used as a guide area on the main rod 41 and the supporting steel bars 46. A number of bridle poles 44 are evenly arranged and welded on the main rod 41 and the supporting steel bars 46 in the direction of the rod body or the extension of the steel bars. The ends of the bridle poles 44 vertically adjacent on the main rod 41 and the supporting steel bars 46 are connected one by one through oblique steel bars 45. The bridle poles 44 and the oblique steel bars 45 are centered with the guide area as the center. The center of the main rod 41 expands outward in proportion to the center of the main rod 41, thereby forming a transparent steel mesh on the conduit platform 4. The transparent steel mesh can not only provide support for the conduit platform 4 and enhance the rigidity of the conduit platform 4, but also provide a fence above the pile foundation hole to prevent construction workers or objects from falling, thereby improving safety. It can also facilitate construction workers to observe the situation in the pile foundation hole through the transparent steel mesh, so that construction workers can quickly grasp the pouring situation; a lifting lug 43 is provided at the end of the main rod 41 or the rectangular frame 31, and the lifting lug 43 is welded to the end of the structure for connecting the lifting equipment.

[0030] The four innermost horse rails 44 on the crisscross-shaped conduit platform 4 enclose a rectangular space, which serves as a guide area on the conduit platform 4 for installing a guide device, and the innermost horse rails 44 serve as a reference for positioning and installing the guide device.

[0031] The guiding device here adopts the catheter buckle frame plate 5, such as Figure 4 As shown, the conduit buckle frame plate 5 is composed of two symmetrically arranged half buckle plates 51. Here, the innermost opposite set of bridle rods 44 are used as hinged steel bars 47. The outer sides of the two half buckle plates 51 are hingedly installed on the central guide area of ​​the conduit platform 4 through the hinged steel bars 47 on the same side. After the two half buckle plates 51 are spliced ​​together, a lower pipe hole 52 matching the outer diameter of the conduit 1 can be formed in the center. The lower pipe hole 52 is coaxial with the pile foundation hole, and a steel handrail 53 is welded to the half buckle plate 51.

[0032] When in use, the catheter buckle plate 5 is installed in the center position of the catheter platform 4. When the catheter 1 needs to be placed, the half buckle plate 51 can be rotated outward to open to form an operating space. After the catheter 1 is lowered to the set position, the half buckle plate 51 is rotated inward to form a complete lower pipe hole 52. The inner diameter of the lower pipe hole 52 is precisely matched with the outer diameter of the catheter. The friction force generated by the metal contact surface limits the horizontal deviation of the catheter. The catheter 1 is guided and positioned through the lower pipe hole 52, so that the catheter 1 can pass through the lower pipe hole 52 smoothly and be accurately guided to the center of the pile foundation hole. The steel handrail 53 not only facilitates operation for construction personnel, but also increases the stability of the catheter buckle plate 5 to a certain extent.

[0033] Example 2: Based on Example 1, the similarities between this example and Example 1 are not repeated here, and the differences are as follows: Figure 5-Figure 9 As shown, a positioning guide box 6 is used as a guiding device.

[0034] The positioning guide box 6 is positioned and installed in the guide area of ​​the catheter platform 4 through the four innermost horseway rods 44, and mainly includes a box frame 61 with upper and lower openings. The upper and lower opening edges of the box frame 61 are provided with an inward frame, and the width of the lower frame is greater than the width of the upper frame. The upper frame is horizontally movable with an upper positioning plate 65, and a middle frame 62 is provided below the upper frame. A movable frame groove 63 is formed between the upper frame and the middle frame 62. The upper positioning plate 65 is movable in the movable frame groove 63, and the size of the movable frame groove 63 is greater than the outline size of the upper positioning plate 65. Inch, an adjustable gap is formed between the two, so that the upper positioning plate 65 has four degrees of freedom in the movable frame groove 63, namely, front, back, left and right, for preliminarily constraining the position of the lower end of the catheter 1 and dynamically adjusting the centering position of the catheter so that the position can be flexibly adjusted during the process of lowering the catheter, thereby improving the accuracy and convenience of calibration; a lower positioning plate 64 is fixed on the upper surface of the lower frame, and guide holes matching the outer diameter of the catheter 1 are provided in the centers of the upper positioning plate 65 and the lower positioning plate 64, which are used to provide directional guidance during the process of lowering the catheter, so that the catheter 1 coincides with the central axis of the pile foundation hole and is placed vertically.

[0035] A calibration seat 66 is provided on the lower positioning plate 64, and a calibration rod 67 is provided on the upper positioning plate 65. The specific structure and the mutual cooperation effect of the calibration seat 66 and the calibration rod 67 are as follows: Figure 6 and Figure 7 As shown, the calibration seat 66 includes a tapered groove block 661 fixed on the lower positioning plate 64, and an inverted cone-shaped tapered groove is provided in the tapered groove block 661, and a threaded hole 662 is provided below the tapered groove, passing through the lower positioning plate 64 and the lower frame; the calibration rod 67 is composed of a long bolt 671, and the long bolt 671 is fixed with a tapered sleeve 672 matching the inner diameter of the tapered groove near the tail end, and the tail end is set to a threaded section 673 adapted to the threaded hole 662, and a calibration hole 68 corresponding to the upper and lower positions of the calibration seat 66 is provided on the upper positioning plate 65, and the maximum outer diameter of the tapered sleeve 672 is smaller than the aperture of the calibration hole 68, ensuring that the tapered sleeve 672 on the long bolt 671 can be smoothly inserted downward through the calibration hole 68, and the bolt head size at the top of the long bolt 671 is larger than the aperture of the calibration hole 68, ensuring that the bolt head at the top of the long bolt 671 will not pass through the calibration hole 68, so that the long bolt 671 can be pressed and fixed to the upper positioning plate 65 by the bolt head.

[0036] When calibrating the position of the upper positioning plate 65, the long bolt 671 is inserted downward through the calibration hole 68, and the threaded section 673 at the tail end enters the tapered groove. The lateral component force generated between the upper positioning plate 65 and the tapered groove slope drives the upper positioning plate 65 to move and calibrate, and fine-tune until the tapered sleeve 672 completely falls into the bottom of the tapered groove to achieve coaxial positioning, so that the guide hole on the upper positioning plate 65 is completely corresponding to the center of the guide hole on the lower positioning plate 64, forming a guide channel that runs through the upper and lower parts, thereby ensuring that the catheter 1 can always remain vertical and be accurately guided to the center of the pile foundation hole.

[0037] The upper positioning plate 65 can be locked in position by the long bolt 671 after calibration, ensuring that the axes of the upper and lower guide holes are completely aligned, forming a guide channel that passes through the upper and lower parts, thereby ensuring that the catheter 1 is stably placed along the axis of the pile foundation hole.

[0038] Embodiment three: Since the upper positioning plate 65 has four degrees of freedom in the movable frame groove 63, the calibration seat 66 and the calibration rod 67 are arranged in the middle position of the upper positioning plate 65 or the lower positioning plate 64 in the four directions of front, back, left and right with the guide hole as the center. The four calibration points are distributed in the middle position of the orthogonal orientation of the guide hole. When any two adjacent calibration points act at the same time, a vector-synthesized calibration force can be formed, so that the upper positioning plate 65 moves along the direction of the resultant force until the four calibration points reach a contact equilibrium state. At this time, the axes of the guide holes of the upper and lower positioning plates 64 are spatially overlapped, eliminating the eccentricity error caused by unilateral calibration.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A visually closed bored pile casting platform, comprising a conduit (1), a steel casing (2), a platform foundation (3) and a conduit platform (4), characterized in that: The platform foundation (3) is supported on the steel casing (2) in the pile foundation hole as the base of the pouring platform. The conduit platform (4) is supported and arranged above the platform foundation (3). A guiding device is arranged at the center of the conduit platform (4). The guiding device is used to guide the conduit (1) to be directional and lowered to the center of the pile foundation hole. The conduit platform (4) includes two parallel and opposite main rods (41). The ends of the two main rods (41) are connected by a connecting rod (42). Two sets of parallel supporting steel bars (46) are vertically welded on both sides of the main rods (41). The main rods (41) and the supporting steel bars (46) form a well-shaped structure. The center of the well-shaped structure in the conduit platform (4) serves as a guide. A guide area is provided for installing a guide device. A plurality of bridle poles (44) are welded on the main pole (41) and the supporting steel bar (46) with the guide area as the center and arranged outward. The ends of the vertically adjacent bridle poles (44) are connected one by one through the inclined steel bars (45). The bridle poles (44) and the inclined steel bars (45) are proportionally expanded outward with the guide area as the center to form a perspective steel mesh. The guide device is installed in the guide area of ​​the conduit platform (4) through the innermost bridle pole (44). The conduit (1) is positioned and guided by the guide device on the conduit platform (4) and placed in the center of the pile foundation hole. The perspective steel mesh provides support and perspective observation of the situation in the pile foundation hole when the conduit (1) is placed. The guiding device is a positioning guide box (6), which is positioned and installed on the catheter platform (4) through the four innermost horseway rods (44). The positioning guide box (6) includes a box frame (61) with upper and lower openings. The upper and lower opening edges of the box frame (61) are provided with inward frames, and the width of the lower frame is greater than that of the upper frame. A lower positioning plate (64) is fixed at the lower frame, and an upper positioning plate (65) is horizontally movably sleeved at the upper frame. The centers of the upper positioning plate (65) and the lower positioning plate (64) are both provided with guide holes matching the outer diameter of the catheter (1). A calibration seat (66) is provided on the lower positioning plate (64), and a calibration rod (67) is provided on the upper positioning plate (65). The calibration rod (67) cooperates with the calibration seat (66) to correct the position of the upper positioning plate (65) so that the centers of the upper and lower guide holes are completely corresponding.

2. A visually enclosed bored pile pouring platform according to claim 1, characterized in that: The calibration seat (66) includes a conical groove block (661) fixed on the lower positioning plate (64), a conical groove in the shape of an inverted cone is provided in the conical groove block (661), and a threaded hole (662) is provided below the conical groove. The threaded hole (662) passes through the lower positioning plate (64) and the lower frame. The calibration rod (67) is composed of a long bolt (671). The long bolt (671) is fixedly sleeved with a conical sleeve (672) matching the inner diameter of the conical groove near the tail end, and the tail end of the long bolt (671) is provided with a threaded section (673) adapted to the threaded hole (662). The upper positioning plate ( 65) is provided with a calibration hole (68) corresponding to the upper and lower positions of the calibration seat (66), the maximum outer diameter of the tapered sleeve (672) is smaller than the aperture of the calibration hole (68), and the bolt head size of the top of the long bolt (671) is larger than the aperture of the calibration hole (68); when calibrating the position of the upper positioning plate (65), the long bolt (671) is inserted vertically downward through the calibration hole (68), and after the tail end enters the tapered groove, the upper positioning plate (65) is driven to move and calibrate through the force between the tail end and the tapered groove inclined surface, and the upper positioning plate (65) is positioned by the threaded hole (662) and the threaded section (673) of the long bolt.

3. The visually enclosed bored pile pouring platform according to claim 2, characterized in that: A middle frame (62) is provided below the upper frame, and a movable frame groove (63) is formed between the upper frame and the middle frame (62). The upper positioning plate (65) is movably mounted in the movable frame groove (63). The upper positioning plate (65) has four degrees of freedom in the movable frame groove (63), i.e., front, back, left, and right. The calibration seat (66) and the calibration rod (67) are provided at the middle position of the upper positioning plate (65) or the lower positioning plate (64) in the four directions of front, back, left, and right, with the guide hole as the center.

4. The visually enclosed bored pile pouring platform according to claim 1, characterized in that: The platform foundation (3) is welded into a rectangular frame (31) using high-strength steel. Reinforcement ribs (32) and frame diagonal bracing steel bars (33) are welded at the corners of the rectangular frame (31). A platform support frame (34) pointing to the center of the rectangular frame (31) is horizontally welded and fixed inside the rectangular frame (31). The two main rods (41) of the conduit platform (4) are mounted on the platform support frame (34).

5. The visually enclosed bored pile pouring platform according to claim 1, characterized in that: The end of the main rod (41) is provided with a lifting lug (43).

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