A pouring mold for bite pile

Abstract

The utility model relates to a kind of perfusion mould for occlusion pile, including perfusion frame, and perfusion frame is made of a piece of side flat plate, a piece of flat bottom plate and a piece of arc side plate, arc side plate is fixed on the both ends of side flat plate by welding mode, flat bottom plate is fixed on the bottom end of arc side plate and side flat plate by welding mode, and with the bottom end contour of arc side plate and side flat plate flush;The height of perfusion frame is consistent with the height of corbel, and perfusion frame is rested on one side in steel casing by resting component, and arc side plate is consistent with the inner side wall of steel casing;The utility model is applied to special structure occlusion pile by using the above-mentioned design perfusion mould, after occlusion pile perfusion forming, without excavating to chisel pile head resting top plate step, and single pile can save thousands of yuan of concrete cost and chisel pile cost, greatly reduce cost, and improve construction efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, and in particular relates to a grouting mold for interlocking piles. Background Technology

[0002] With the development of urban infrastructure, especially the large-scale construction of subways, each subway station requires a foundation pit during construction. Foundation pits usually require retaining piles, which are mostly interlocking piles. This is a new type of retaining technology in the field of foundation pits. Due to its lower cost and shorter construction period compared to diaphragm walls, it is rapidly growing in ultra-deep foundation pits and projects with high environmental protection requirements. In particular, the emergence of double-layer interlocking piles (both the first and second sequence piles contain steel cages) and the design of anchoring the pile top into the capping beam has added stronger competitiveness to interlocking piles. However, the design of anchoring the pile top into the capping beam also puts forward higher requirements for on-site construction, because the retaining piles need to be anchored into the top slab and capping beam as permanent structures. Because of the process of anchoring the pile top into the crown beam, and because the pile foundation grouting needs to be poured at the highest point of the pile top in order to ensure the grouting quality, the concrete on the side from the pile top to the step needs to exceed the pipe. This not only wastes this section of concrete and increases the cost of concrete, but also greatly increases the difficulty of chiseling the pile head after excavation, requiring a larger volume to be excavated. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a grouting mold for interlocking piles. After casting, there is no need to excavate and chisel the step where the pile head rests on the top plate, thereby improving construction efficiency and reducing costs.

[0004] The purpose of this utility model is achieved through the following technical solution: a grouting mold for interlocking piles includes a grouting frame, which is composed of a side plate, a flat bottom plate, and an arc-shaped side plate. The arc-shaped side plate is fixed to both ends of the side plate by welding, and the flat bottom plate is fixed to the bottom ends of the arc-shaped side plate and the side plate by welding, and is flush with the bottom contours of the arc-shaped side plate and the side plate. The height of the grouting frame is consistent with the height of the crown beam. The grouting frame is placed on one side inside the steel casing by a support assembly, and the arc-shaped side plate matches the inner wall of the steel casing.

[0005] The beneficial effects of this utility model are as follows: Compared with the prior art, by adopting the above-designed grouting mold and applying it to interlocking piles with special structures, after the interlocking pile is grouted and formed, there is no need to excavate and chisel the steps where the pile head rests on the top plate. Moreover, a single pile can save thousands of yuan in concrete costs and pile chiseling fees, which greatly reduces costs and improves construction efficiency.

[0006] Preferably, the support assembly includes a through hole on the side plate and a through hole on the arc-shaped side plate. The two through holes are located at the upper end of the grouting frame and are concentrically distributed. The through holes pass through the reinforcing cage resting inside the steel casing via a plug. By providing the through holes, they can serve as lifting points during hoisting and as anchor points to prevent the mold from floating due to buoyancy, fixing it to the reinforcing cage to resist buoyancy.

[0007] Preferably, the outer diameter of the arc-shaped side plate is smaller than the inner diameter of the steel casing, and the distance A between the center point of the arc-shaped side plate and the center point of the side plate is equal to the support distance for supporting the top plate; this not only avoids jamming when the mold is lowered, but also ensures the support distance for supporting the top plate, thus guaranteeing the stability of the top plate support.

[0008] Preferably, the flat bottom plate is inclined, and the flat bottom plate is inclined at 3° from one side of the arc-shaped side plate to the side plate; so that when the concrete is poured to the elevation of the bottom plate of the mold, the concrete and laitance can continue to be squeezed upward in an orderly manner, and the laitance is controlled at the top of the whole to avoid the accumulation of laitance affecting the quality of the pile head.

[0009] Preferably, all welded joints of the grouting frame are fully welded and sealed, and the grouting frame is filled with concrete. Because the concrete inside the steel casing has a high density, directly placing the mold will cause it to be lifted by buoyancy. Therefore, the mold needs to be filled with concrete to increase its weight.

[0010] Preferably, the upper end of the reinforcing cage has a stepped structure, the grouting frame is located at the stepped part of the reinforcing cage, and the flat bottom plate of the grouting frame is provided with a first through hole for the sound-conducting tube and a second through hole for the vertical reinforcement of the reinforcing cage to pass through, and PVC pipes are fixed on both the first through hole and the second through hole; to ensure the placement of the grouting frame and facilitate its application in actual construction.

[0011] Preferably, the distance B between the side plate of the grouting frame and the reinforcing cage inside the steel casing is 3 to 5 cm; this ensures that the reinforcing cage is not exposed and ensures the quality of grouting. Attached Figure Description

[0012] Fig. 1 This is a schematic diagram of the injection mold structure of this utility model.

[0013] Fig. 2 This is a top view schematic diagram of the actual application of the injection mold of this utility model.

[0014] Fig. 3 This is a side view of the actual application structure of the injection mold of this utility model.

[0015] The labels in the attached diagram are as follows: 1. Grouting frame; 2. Crown beam; 3. Steel casing; 4. Insert rod; 5. Reinforcing cage; 6. PVC pipe; 11. Side plate; 12. Flat bottom plate; 13. Arc-shaped side plate; 14. Through hole; 15. First through hole; 16. Second through hole. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings: as shown in the drawings Figs. 1 to 3 As shown, this utility model includes a grouting frame 1, which is composed of a side plate 11, a flat bottom plate 12, and an arc-shaped side plate 13. The arc-shaped side plate 13 is fixed to both ends of the side plate 11 by welding. The flat bottom plate 12 is fixed to the bottom end of the arc-shaped side plate 13 and the side plate 11 by welding and is flush with the bottom contour of the arc-shaped side plate 13 and the side plate 11. The height of the grouting frame 1 is the same as the height of the crown beam 2. The grouting frame 1 is placed on one side inside the steel casing 3 by a support assembly, and the arc-shaped side plate 13 matches the inner wall of the steel casing 3.

[0017] The support assembly includes a through hole 14 on the side plate 11 and a through hole 14 on the arc-shaped side plate 13. The two through holes 14 are located at the upper end of the grouting frame 1. The two through holes 14 are concentrically distributed and pass through the reinforcing cage 5 placed inside the steel casing 3 via the insert rod 4.

[0018] The outer diameter of the arc-shaped side plate 13 is smaller than the inner diameter of the steel casing 3, generally by about 10 mm. During use, the side plate 11 is kept in the same position as designed. There can be a certain gap between the arc-shaped side plate 13 and the inner wall of the steel casing 3, which does not affect the grouting quality. Even if the concrete flows around it, the thin block of concrete formed can be broken off and removed by tapping after it solidifies. The distance A between the center point of the arc-shaped side plate 13 and the center point of the side plate 11 is equal to the support distance for supporting the top plate.

[0019] The flat bottom plate 12 is distributed in an inclined manner, and the flat bottom plate 12 is inclined at 3° from one side of the arc-shaped side plate 13 to the side plate 11.

[0020] All welded joints of the grouting frame 1 are fully welded and sealed, and concrete is poured inside the grouting frame 1.

[0021] The upper end of the reinforcing cage 5 is a stepped structure. The grouting frame 1 is located at the stepped part of the reinforcing cage 5. The flat bottom plate 12 of the grouting frame 1 is provided with a first through hole 15 for the sound tube and a second through hole 16 for the vertical reinforcement of the reinforcing cage to pass through. The vertical reinforcement can be connected to the end reinforcement of the top plate. PVC pipes 6 are fixed on both the first through hole 15 and the second through hole 16.

[0022] The distance B between the side plate 11 of the grouting frame 1 and the steel cage 5 inside the steel casing 3 is 3 to 5 cm.

[0023] The working principle of this utility model is as follows: First, the reinforcing cage 5 is hoisted into the steel casing 3 and fixed in place; then, the grouting frame 1 is hoisted into the steel casing 3 through two through holes 14 and located on one side of the reinforcing cage 5; finally, the insert rod 4 passes through the two through holes 14 to limit and fix the grouting frame 1 on the reinforcing cage 5 and located on one side inside the steel casing 3. At this time, concrete can be poured into the steel casing 3 until the concrete is poured to be flush with the bottom of the through holes 14 of the grouting frame 1, thus forming a support step for supporting the top slab.

[0024] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pouring mold for use on a bite pile, comprising a pouring frame (1), characterized in that: The injection frame (1) is composed of a side plate (11), a flat bottom plate (12) and an arc-shaped side plate (13). The arc-shaped side plate (13) is fixed to both ends of the side plate (11) by welding. The flat bottom plate (12) is fixed to the bottom of the arc-shaped side plate (13) and the side plate (11) by welding, and is flush with the bottom contour of the arc-shaped side plate (13) and the side plate (11). The height of the injection frame (1) is the same as the height of the crown beam (2). The injection frame (1) is placed on one side of the steel casing (3) by a support assembly, and the arc-shaped side plate (13) matches the inner wall of the steel casing (3).

2. A pour form for use on a bite pile according to claim 1, characterized in that: The support assembly includes a through hole (14) on the side plate (11) and a through hole (14) on the arc-shaped side plate (13). The two through holes (14) are located at the upper end of the injection frame (1). The two through holes (14) are coaxially distributed and pass through the reinforcing cage (5) placed inside the steel casing (3) via the insert rod (4).

3. A pour form for use on a bite pile according to claim 1, characterized in that: The outer diameter of the arc-shaped side plate (13) is smaller than the inner diameter of the steel casing (3), and the distance A between the center point of the arc-shaped side plate (13) and the center point of the side plate (11) is equal to the support distance for supporting the top plate.

4. A pour form for use on a bite pile according to claim 1, characterized in that: The flat bottom plate (12) is distributed in an inclined manner, and the flat bottom plate (12) is inclined at 3° from one side of the arc-shaped side plate (13) to the side plate (11).

5. A pour form for use on a bite pile according to claim 1, characterized in that: All welded joints of the grouting frame (1) are fully welded and sealed, and concrete is poured into the grouting frame (1).

6. A pour form for use on a bite pile according to claim 2, characterized in that: The upper end of the steel cage (5) is a stepped structure. The grouting frame (1) is located at the stepped part of the steel cage (5). The flat bottom plate (12) of the grouting frame (1) is provided with a first through hole (15) for the sound tube and a second through hole (16) for the vertical reinforcement of the steel cage to pass through. PVC pipes (6) are fixed on the first through hole (15) and the second through hole (16).

7. A pour form for use on a bite pile according to claim 6, characterised in that: The distance B between the side plate (11) of the grouting frame (1) and the steel cage (5) inside the steel casing (3) is 3 to 1.

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