Reinforcing protective hoop cover device of cast-in-place pile casing

Abstract

A reinforcing protection hoop cover device of a cast-in-place pile casing comprises the cast-in-place pile casing. The reinforcing hoop is a sleeve with a T-shaped vertical section and a through hole in the center, the reinforcing hoop is arranged on the outer side of the cast-in-place pile casing in a sleeving mode, the top face of the reinforcing hoop is flush with the top face of the cast-in-place pile casing, the side wall of the reinforcing hoop is connected with the side wall of the cast-in-place pile casing through a first connecting piece, and the top of the reinforcing hoop is provided with an openable protective cover; the supporting arms extend in the radial direction of the reinforcing tension band, one ends of the supporting arms are connected with the horizontal section of the reinforcing tension band through second connecting pieces, the other ends of the supporting arms are connected with the ground through supporting pieces, and the multiple supporting pieces are evenly arranged in the circumferential direction of the reinforcing tension band; at least two anchoring parts are arranged in the circumferential direction of the reinforcing hoop, one end of each anchoring part is fixedly connected with the horizontal section of the reinforcing hoop, and the other end of each anchoring part is connected to the ground in an outward inclined mode. The cast-in-place pile casing is stable, deflection and sinking of the cast-in-place pile casing are prevented, personnel can be prevented from falling into a pile hole or rainwater can be prevented from being poured into the pile hole, and recycling and reusing are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a reinforcement and protection hoop device for a cast-in-place pile casing. Background Technique

[0002] The "Technical Code for Building Pile Foundations" (JGJ 94-2008) stipulates that a pile with a diameter exceeding 800 mm is a large-diameter pile. Especially for the pile foundations of large high-rise buildings, large bridges and other structures, the pile diameter can reach more than 2000 mm. These pile foundations are usually called reinforced concrete cast-in-place piles. The scale of the pile foundation is large, and the amount of soil to be drilled or excavated for the pile hole formation is large, and the stability requirements of the pile side wall are relatively high. During the construction process of forming the pile hole of the cast-in-place pile, generally when starting the hole, a cast-in-place pile casing is set at a certain depth downward from the ground surface to temporarily support the shallow soft or loose soil layer, so as to prevent the upper soil layer from collapsing and falling blocks caused by mechanical disturbance during the continuous drilling of the pile hole, and at the same time ensure the stability of the slurry liquid level in the pile hole during the construction process, and finally ensure the quality of the cast-in-place pile hole formation and the quality of the cast-in-place concrete. At present, the mechanical hole-forming construction processes of cast-in-place piles include: rotary drilling, positive and reverse circulation drilling, impact drilling, etc. These soft or loose soil layers include: soft soils such as silty soil, silty soil or sandy soil layers that are easily disturbed and liquefied, and fill soils that are loose and prone to collapse. In particular, when the groundwater level is buried relatively shallow, the stability requirements for the pile hole are more stringent, and underwater cast-in-place concrete will be involved. The cast-in-place pile casing is in the shape of a cylinder with the same diameter up and down, and is generally formed by rolling and welding steel plates with a thickness of 4-12 mm. Before burying the cast-in-place pile casing, generally, first, the length of the cast-in-place pile casing is selected according to the pile diameter, the thickness of the soft or loose soil layer and engineering experience, and then the cast-in-place pile casing is positioned with the pile position center as the center of the circle, and then the cast-in-place pile casing is buried into the soil by static pressure or impact. If it is difficult to properly bury the cast-in-place pile casing by the above method, first dig out part of the soil layer at the pile hole opening, and then bury the cast-in-place pile casing into the ground. The cast-in-place pile casing must be in a vertically downward state.

[0003] However, during the construction process of pile foundation hole formation and concrete pouring, due to the frequent entry and exit of mechanical drill bits or conduits into and out of the drill hole, mud scouring, and soil extrusion around the hole wall, the cast-in-place pile casing may be deflected or sunk, which will seriously affect the pile quality, prolong the construction period, cause huge economic losses, and even lead to the failure of hole formation.

[0004] In addition, the existing cylinder casing has no protective cover, there is a risk of personnel falling, and it is easy to enter rainwater on rainy days, resulting in dilution of the slurry in the pile hole.

[0005] Some construction casing devices are disclosed in the prior art, such as the devices disclosed in patent document numbers 202410546502.8, 202410493647.6, 202321471910.9, etc. However, none of them can well solve the above problems. Therefore, it is necessary to develop a new protective device for cast-in-place pile casings. Summary of the Utility Model

[0006] In view of the problems and deficiencies in the prior art, the present utility model provides a reinforcement and protection hoop cover device for cast-in-place pile casings.

[0007] The technical solution of the present utility model is as follows:

[0008] A reinforcement and protection hoop cover device for cast-in-place pile casings, comprising a cast-in-place pile casing;

[0009] A reinforcement hoop, which is a sleeve with a T-shaped vertical cross-section and a through hole in the center, is sleeved outside the cast-in-place pile casing, the top surface is flush with the top surface of the cast-in-place pile casing, the side wall is connected to the side wall of the cast-in-place pile casing through a first connecting piece, and a protective cover that can be opened is provided at the top;

[0010] Support arms, extending radially along the reinforcement hoop, one end is fixedly connected to the horizontal section of the reinforcement hoop through a second connecting piece, and one end is connected to the ground through a support member, and multiple support members are uniformly arranged along the circumferential direction of the reinforcement hoop;

[0011] Anchoring members, at least two are arranged along the circumferential direction of the reinforcement hoop, one end is fixedly connected to the horizontal section of the reinforcement hoop, and one end is connected to the ground obliquely outward.

[0012] According to a specific embodiment, the reinforcement hoop is a split structure, including two hoop members symmetrically centered vertically, symmetrically clamped around the outer circle of the cast-in-place pile casing, and there is a gap at the butt joint, and the gap distance is not less than 20 mm.

[0013] The support arms are located below the horizontal section of the reinforcement hoop and are connected in a radially adjustable manner along the length of the reinforcement hoop. The support members are vertically arranged below the support arms. In order to provide sufficient vertical support force to prevent the reinforcement hoop from settling, the support members are made of pads or jacks. Further, four support arms and support members are provided along the circumferential direction of the reinforcement hoop respectively. Furthermore, there are four anchoring members along the circumferential direction of the reinforcement hoop, and they are arranged at intervals and staggered with the support arms. The purpose is to prevent the reinforcement hoop and the cast-in-place pile casing from tilting and keep them in a vertical state.

[0014] Specifically, the included angle between the anchoring member and the side wall of the reinforcement hoop is 30° - 60°. The anchoring member is a soil nail or a threaded steel bar, and the diameter specification is 20 - 38 mm. More specifically, in order to ensure the reinforcement effect, the soil nails can be of 20 and 25 diameter specifications, and the threaded steel bars can be steel pipe piles with 25 mm, 32 mm, and 38 mm diameter specifications.

[0015] For easy opening, the protective cover is composed of a circular cover plate with a U-shaped groove and a sliding small cover plate. The cross-section of the small cover plate is T-shaped, with a semi-circular protrusion at its outer end and a semi-circular hole at its inner end. After the small cover plate is installed in place, a closed circular hole matching the size of the steel casing is formed between the semi-circular hole at the inner end and the protective cover.

[0016] To improve safety and prevent personnel from falling at night, a solar photovoltaic panel and a warning light strip electrically connected thereto are provided on the protective cover to achieve the function of emitting light for warning at night.

[0017] For easy fixed connection and convenient disassembly, both the first connecting member and the second connecting member are bolts and nuts.

[0018] The beneficial effects of the present utility model are as follows:

[0019] (1) Stabilize the cast-in-place pile casing, that is, prevent the cast-in-place pile casing from deflecting and sinking during the whole process of the construction of recovering and pulling out the cast-in-place pile casing after the pile foundation hole is formed, concrete is poured, and the pile is completed.

[0020] (2) Stabilize the cast-in-place pile casing for pouring concrete, that is, facilitate the installation of the conduit and maintain continuous stability during the pouring process when the concrete is poured after the hole is formed.

[0021] (3) Have the function of a protective cover, which can not only cover the cast-in-place pile casing opening during the construction break to prevent personnel from falling into the pile hole, but also cover the cast-in-place pile casing opening during the rain stop to prevent rainwater from entering the pile hole and diluting the mud.

[0022] (4) Facilitate disassembly, and do not affect the pulling out of the cast-in-place pile casing after the pile pouring is completed, for recycling and reuse. Description of the Drawings

[0023] Figure 1 It is a top view structural schematic diagram of the embodiment;

[0024] Figure 2 It is Figure 1 The sectional view of A-A in

[0025] Figure 3 It is Figure 1 The sectional view of B-B in

[0026] Figure 4 It is a structural schematic diagram of the protective cover;

[0027] Figure 5 It is a structural schematic diagram of the small cover plate;

[0028] Figure 6 It is a sectional schematic diagram of the small cover plate;

[0029] 1. Steel casing; 2. Reinforcing hoop; 3. Support arm; 4. Support member; 5. Protective cover; 6. Anchor; 7. First connecting member; 8. Second connecting member; 51. Circular cover plate; 52. Small cover plate. Detailed implementation manner

[0030] The following will further elaborate on the technical means adopted to achieve the predetermined invention purpose of the present utility model in combination with the drawings in the embodiments of the present utility model.

[0031] Please refer to Figures 1 - 3 as shown, where Figure 1 is the top view structural schematic diagram of the embodiment; Figure 2 is Figure 1 the cross-sectional view of the A-A section in Figure 3 is Figure 1 the cross-sectional view of the B-B section in

[0032] A reinforcement and protection hoop cover device for a cast-in-place pile casing, comprising a cast-in-place pile casing;

[0033] The reinforcing hoop 2 is a sleeve with a T-shaped vertical cross-section and a through hole in the center, sleeved outside the cast-in-place pile casing, with the top surface flush with the top surface of the cast-in-place pile casing. The side wall is connected to the side wall of the cast-in-place pile casing through the first connecting member 7, and a detachable protective cover 5 is provided at the top;

[0034] The support arm 3 extends radially along the reinforcing hoop 2, one end is fixedly connected to the horizontal section of the reinforcing hoop 2 through the second connecting member 8, and one end is connected to the ground through the support member 4, and multiple support members 4 are evenly arranged circumferentially along the reinforcing hoop 2.

[0035] The anchor 6 is arranged at least in two pieces circumferentially along the reinforcing hoop 2, one end is fixedly connected to the horizontal section of the reinforcing hoop 2, and one end is connected to the ground obliquely outward.

[0036] According to a specific embodiment, the reinforcing hoop 2 is a split structure, including two hoop members symmetrically centered vertically, symmetrically clamped around the outer ring of the cast-in-place pile casing, and there is a gap at the butt joint, and the gap distance is not less than 20 mm.

[0037] Refer to Figure 2As shown in the figure, the support arm 3 is located below the horizontal section of the reinforcement hoop 2 and is connected to the reinforcement hoop in a radially adjustable manner. The support member 4 is vertically arranged below the support arm 3. To provide sufficient vertical support force and prevent the reinforcement hoop 2 from settling, the support member 4 can be a cushion block or a jack. Specifically, the support arm can adopt a telescopic structure, which is composed of two and a half telescopic sections connected together, and then the two ends are respectively connected to the reinforcement hoop and the support member. Further, four support arms 3 and four support members 4 are respectively arranged along the circumferential direction of the reinforcement hoop 2. Even further, there are four anchor members 6 along the circumferential direction of the reinforcement hoop 2, and they are arranged at intervals and staggered with the support arm 3. The purpose is to prevent the reinforcement hoop 2 and the cast-in-place pile casing from tilting and keep them in a vertical state.

[0038] Specifically, refer to Figure 3 As shown in the figure, the anchor member 6 is connected to the reinforcement hoop 2 through a wedge-shaped pedestal and fastening bolts, and the included angle between the anchor member 6 and the side wall of the reinforcement hoop 2 is 30° - 60°. In this embodiment, the anchor member 6 can be a soil nail or a threaded steel bar, and the diameter specification is 20 - 38 mm. More specifically, to ensure the reinforcement effect, the soil nails can be of 20 and 25 diameter specifications, and the threaded steel bars can be steel flower pipes of 25 mm, 32 mm, and 38 mm diameter specifications.

[0039] Refer to Figures 4 - 6 As shown in the figure, the protective cover 5 is composed of a circular cover plate 51 with a U-shaped groove and a sliding small cover plate 52. The cross-section of the small cover plate is T-shaped, with a semi-circular protrusion at its outer end and a semi-circular hole at its inner end. After the small cover plate is installed in place, a closed circular hole matching the size of the steel casing is formed between the semi-circular hole at the inner end and the protective cover. In specific implementation, the protective cover 5 is composed of a circular cover plate 51 with a U-shaped notch and a sliding small cover plate 52. The outer side of the circular cover plate 51 is hinged to the reinforcement hoop 2 and can be lifted and closed to cover the steel casing 1. The length of the small cover plate 52 should exceed the length of the U-shaped hole by 40 cm. The small cover plate 52 slides into the U-shaped notch from the outside to the inside. To ensure that it can fit the edge of the U-shaped notch and slide smoothly, the two straight edges of the small cover plate 52 are of a T-shaped structure with a wider upper part and a narrower lower part, and the height of the narrower lower part is the same as the thickness of the edge of the U-shaped notch. After the small cover plate is installed in place, it is fixed by bolts. The small cover plate 52 adopts a design with different ends at both ends. It has a semi-circular protrusion at its outer end and a semi-circular hole at its inner end. In the working state, after the small cover plate is installed in place, a closed circular hole matching the size of the steel casing is formed between the semi-circular hole at the inner end and the protective cover, and then it is fixed by bolts through the installation holes on both sides, which is convenient for installation and presses the steel casing, and is used in the concrete pouring stage; in the non-working state, the end of the small cover plate 52 with the semi-circular protrusion cooperates with the arc edge of the U-shaped groove of the protective cover, thereby blocking the hole for installing the steel casing and preventing rainwater or other sundries from entering the construction hole when the construction is not completed, the steel casing has not been installed, and there is no construction.

[0040] To improve safety and prevent personnel from falling at night, a solar photovoltaic panel and a warning light strip electrically connected thereto are provided on the protective cover 5 to achieve the function of emitting light for warning at night. In this embodiment, the warning light strip is in a semi-circular ring shape with a notch, and the side with the notch faces the small cover plate.

[0041] For the convenience of fixed connection and easy disassembly, both the first connecting member 7 and the second connecting member 8 adopt bolts and nuts.

[0042] The utility model makes the cast-in-place pile casing stable through the settings of the reinforcement hoop 2, the support member 4 and the anchor member 6, that is, it prevents the cast-in-place pile casing from deflecting and sinking during the whole process of the construction of recovering and pulling out the cast-in-place pile casing after the pile foundation hole forming, concrete pouring and pile forming are completed. And it is convenient for the installation of the conduit and the continuous stability during the pouring process when the concrete is poured after the hole forming is completed.

[0043] Through the setting of the protective cover 5, not only can the cast-in-place pile casing opening be covered during the construction break to prevent personnel from falling into the pile hole, but also when the construction stops in rainy days, it can cover the cast-in-place pile casing opening to prevent rainwater from entering the pile hole and diluting the slurry. And it is easy to disassemble, and does not affect the pulling out of the cast-in-place pile casing and recycling after the pile pouring is completed.

[0044] The above is the preferred embodiment of the utility model, but the utility model is not limited to the above embodiment and examples. Various changes, equivalent replacements, improvements, etc. made without departing from the inventive concept within the knowledge scope of those skilled in the art shall be included within the protection scope of the utility model.

Claims

1. A reinforcing and protective hoop cover device for a cast-in-place pile casing, comprising a cast-in-place pile casing, characterized in that, Also included are: A reinforcing hoop (2), which is a casing with a T-shaped vertical cross-section and a through hole in the center. It is sleeved outside the cast-in-place pile casing, with its top surface flush with the top surface of the cast-in-place pile casing. Its side wall is connected to the side wall of the cast-in-place pile casing through a first connecting piece (7), and a movable protective cover (5) is provided at the top. Support arms (3), which extend radially along the reinforcing hoop (2). One end is fixedly connected to the horizontal section of the reinforcing hoop (2) through a second connecting piece (8), and the other end is connected to the ground through a support member (4). And a plurality of the support members (4) are evenly arranged along the circumferential direction of the reinforcing hoop (2). Anchoring members (6), at least two of which are arranged along the circumferential direction of the reinforcing hoop (2). One end is fixedly connected to the horizontal section of the reinforcing hoop (2), and the other end is connected obliquely outward underground.

2. The reinforced protective hoop cover device according to claim 1, wherein, The reinforcing hoop (2) is of a split structure, including two hoop members symmetrically centered vertically. They symmetrically hold and connect to the outer circle of the cast-in-place pile casing, and there is a gap at the butt joint. The distance of the gap is not less than 20 mm.

3. The reinforced protective hoop cover device according to claim 2, wherein, The support arms (3) are located below the horizontal section of the reinforcing hoop (2) and are connected in a radially adjustable manner along the reinforcing hoop. The support members (4) are vertically arranged below the support arms (3), and the support members are pads or jacks.

4. The reinforcement and protection hoop cover device according to claim 3, characterized in that, Four support arms (3) and four support members (4) are respectively arranged along the circumferential direction of the reinforcing hoop (2).

5. The reinforced protective hoop cover device according to claim 4, wherein, There are four anchoring members (6) along the circumferential direction of the reinforcing hoop (2), and they are arranged at intervals and staggered with the support arms (3).

6. The reinforcement and protection hoop cover device according to any one of claims 1-5, characterized in that, The included angle between the anchoring member (6) and the side wall of the reinforcing hoop (2) is 30° - 60°.

7. The reinforcing and protective hoop cover device according to claim 6, characterized in that, The anchoring member (6) is a soil nail or a threaded steel bar, and the diameter specification is 20 - 38 mm.

8. The reinforced protective hoop cover device according to claim 7, wherein, The protective cover (5) is composed of a circular cover plate (51) with a U-shaped groove and a sliding small cover plate (52). The cross-section of the small cover plate is T-shaped, with a semi-circular protrusion at its outer end and a semi-circular hole at its inner end. And after the small cover plate is installed in place, a closed circular hole matching the size of the steel casing is formed between the semi-circular hole at the inner end and the protective cover.

9. The reinforcing and protective hoop cover device according to claim 7, wherein, The protective cover (5) is provided with a solar photovoltaic panel and a warning light strip electrically connected thereto.

10. The reinforced protective hoop cover device according to claim 8 or 9, characterized in that, Both the first connecting piece (7) and the second connecting piece (8) are bolts and nuts.

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