Hole collapse prevention construction equipment for soft soil geologic square pile

Abstract

The utility model belongs to the technical field of geological construction equipment with weak shear capacity, and particularly relates to hole collapse prevention construction equipment for a soft soil geological square pile. According to the specific technical scheme, the device comprises a square steel pile casing, the square steel pile casing comprises a square pile casing body with an upward opening, movable cover plates are symmetrically hinged to the top of the pile casing body, and in the closed state, the two movable cover plates form an inverted-V-shaped top cover; linkage supports are arranged on the outer side walls of the movable cover plates, hoisting steel wire ropes are arranged on the outer side wall of the pile casing body, the ends, away from the pile casing body, of the hoisting steel wire ropes penetrate through the linkage supports to be connected with a crane, the crane drives the hoisting steel wire ropes to move, the tops of the two movable cover plates are made to be away from or close to each other, and opening / closing of the top cover is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of geological construction equipment with weak shearing resistance, and specifically relates to soft soil geology square pile anti-collapse hole construction equipment. Background Art

[0002] Geological conditions with weak shear resistance usually include soft soil, sandy soil, crushed stone soil, etc. Among them, soft soil refers to geological conditions with a high water content. The water content weakens the adhesion between geological particles, so the shear strength is low. Soft soil usually requires additional treatment measures in foundation engineering to ensure the stability of the project. Sandy soil is mainly composed of sand particles. The adhesion between sandy soil particles is relatively weak, so its shear strength is generally low. The drainage performance of sandy soil is usually good, but in some cases, such as liquefaction caused by earthquakes or heavy rains, sandy soil may lose its strength. Gravel soil is a geological condition containing a large amount of crushed stone or gravel. Although the stones themselves may have a high shear resistance, the bonding between the stones is weak, so the overall shear resistance is relatively low. Gravel soil may require special treatment in engineering to ensure the stability of the project.

[0003] Manual bored piles and artificial retaining walls are a high-cost, high-risk, and low-efficiency pile foundation construction method. These characteristics are particularly evident in areas with soft soil conditions with weak shear resistance, because it is very easy to collapse during the hole forming process, causing casualties. Therefore, for construction in soft soil with weak shear resistance, it is necessary to provide a construction equipment with high safety, low cost, and high efficiency. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a soft soil geology square pile anti-collapse hole construction equipment.

[0005] In order to achieve the purpose of the above-mentioned utility model, the technical solution adopted by the utility model is: a soft soil geology square pile anti-collapse hole construction equipment, including a square steel casing, the square steel casing includes a square casing body with an opening facing upward, and the top of the casing body is symmetrically hinged with movable cover plates. When in a closed state, the two movable cover plates form an inverted "V"-shaped top cover; a linkage support is provided on the outer wall of the movable cover plate, and a lifting wire rope is provided on the outer wall of the casing body. The end of the lifting wire rope away from the casing body passes through the linkage support and is connected to a crane. The crane drives the lifting wire rope to move, so that the tops of the two movable cover plates move away from / close to each other, thereby realizing the opening / closing of the top cover.

[0006] Preferably, at least two linkage supports are evenly arranged on the outer side wall of each movable cover plate in the horizontal direction, and a lifting wire rope is correspondingly arranged on each linkage support.

[0007] Preferably, two linkage supports are symmetrically arranged on the outer side wall of each movable cover plate along its horizontal length direction.

[0008] Preferably: a fixed shackle lifting lug is arranged on the outer side wall of the casing body and near the top thereof, the fixed shackle lifting lug corresponds to the linkage support, and one end of the lifting wire rope is detachably connected to the fixed shackle lifting lug.

[0009] Preferably: vertical fixing plates are symmetrically arranged on the top of the casing body, and the shape of the vertical fixing plates is a triangle, and corresponds to the side cross-sectional shape of the two movable cover plates when the two movable cover plates are in a closed state, so that when the top cover is in a closed state, the two vertical fixing plates and the two movable cover plates are combined to form a triangular prism with a hollow interior and an opening on one side, and the opening faces the casing body.

[0010] Preferably, a casing edge sealing strip is arranged on a side of the movable cover away from the top of the casing body, and the length of the casing edge sealing strip corresponds to the length of the movable cover.

[0011] Preferably, the two edge sealing strips of the protective tube are arranged vertically, and when the top cover is in a closed state, the two edge sealing strips of the protective tube are in contact with each other.

[0012] Preferably, two ends of the casing edge sealing strip are symmetrically provided with other ribs, and the other ribs are fixedly connected to the casing edge sealing strip and the movable cover plate.

[0013] Preferably, the movable cover is hinged to the top of the casing body through a movable hinge.

[0014] Preferably, it also includes a rotary drilling rig and a barrel extraction device, wherein the rotary drilling rig is used to dig into the stratum to form a pile hole, and the barrel extraction device is used to extract the square steel casing during the concrete pouring process.

[0015] This application has the following beneficial effects:

[0016] The use of square steel casing plays a key role in the construction of rotary drilling square pile anti-collapse holes. It not only helps control the flow of concrete, but also ensures the stability and accuracy of construction to a certain extent. At the same time, the amount of concrete used can be more accurately controlled, thereby reducing waste, saving costs and reducing the impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view schematic diagram of the square pile anti-collapse hole of the utility model;

[0018] Figure 2 It is a perspective schematic diagram of the square pile anti-collapse hole of the utility model;

[0019] Figure 3 This is a schematic diagram of the closed state of the square steel casing of the utility model;

[0020] Figure 4This is a schematic diagram of the square steel casing of the utility model in an open state;

[0021] Figure 5 It is a schematic diagram of the wall protection state of the square steel casing of the utility model.

[0022] In the figure, there are a square steel casing 10, a casing body 11, a movable cover plate 12, an edge banding strip 13, another rib plate 14, a movable hinge 15, a linkage support 16, a lifting wire rope 17, a fixed shackle lifting ear 18, and a wall retaining concrete 20. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0024] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] It should be noted that H1 is the moderately weathered rock geology at the bottom of the anchor pile; H2 is the strongly weathered rock layer (the depth of excavation and pouring of earthwork for anti-collapse hole retaining wall and reinforced concrete retaining wall).

[0026] like Figure 1-5 As shown, a construction method for rotary excavation of square piles to prevent collapse in soft soil has a core idea: using mechanical equipment such as a round drill or an excavator to dig square pile holes, and then installing square steel casings 10 in sections and continuously pouring concrete in the square pile holes to complete the square pile hole wall protection. Specifically, the square steel casing 10 is hoisted to the bottom of the square pile hole pit, earth is filled into the square steel casing 10, and a steel cage of wall protection concrete 20 is placed in the square pile hole. When the first section of wall protection concrete 20 is poured to the same height as the square steel casing 10, the square steel casing 10 is pulled out upwards so that the bottom of the square steel casing 10 is close to and does not separate from the top of the completed square pile hole wall protection; the operation is repeated to pour the next section of the square pile hole until the entire square pile hole wall protection is completed.

[0027] This method is suitable for soft soil, sandy soil, gravel soil and other types of geology with weak shear resistance, and concrete retaining wall pouring projects not exceeding 10 meters. This method uses mechanical equipment to replace manual labor to directly enter the hole for operation, which significantly improves the safety of the operation. This method can complete the construction of a retaining wall of about 5 to 10 meters at one time, significantly improving work efficiency. Since the square steel casing 10 is used in the method, the amount of concrete used can be more accurately controlled, thereby reducing waste, which not only saves costs but also reduces the impact on the environment.

[0028] like Figure 3-5 As shown, the construction equipment corresponding to the construction method includes a square steel casing 10 and a rotary drilling machine. The square steel casing 10 includes a casing body 11. The top of the casing body 11 is provided with an openable and closable top cover. When the top cover is closed, the top cover and the casing body 11 are combined to form a closed square steel casing 10. When the square steel casing 10 is installed in sections, the square steel casing 10 is placed at the concrete wall section to be protected, the top cover is opened to fill earth into the casing body 11, and then the top cover is closed to pour the wall protection concrete 20 of this section. After completing the wall protection of this section, the square steel concrete is pulled out upwards to start the next wall protection section.

[0029] Furthermore, it also includes a movable cover plate 12, two of which are symmetrically hingedly arranged on the top of the casing body 11, and the two movable cover plates 12 are closed to form an inverted "V"-shaped top cover; a linkage support 16 is arranged on the outer wall of the movable cover plate 12, one end of a lifting wire rope 17 passes through the linkage support 16 and is fixedly connected to the outer wall of the casing body 11, and the end of the lifting wire rope 17 away from the side wall of the casing body 11 is connected to a crane, and the crane pulls the lifting wire rope 17 to make the tops of the two movable cover plates 12 move away from / close to each other, so as to realize the opening and closing of the top cover. When closing, the crane pulls the lifting wire ropes 17 on both sides to move closer to each other, and the linkage support 16 and the lifting wire rope 17 cooperate with each other, so that the movable cover plate 12 is closed under the action of its own gravity and the traction of the lifting wire rope 17. When opening, the crane pulls the hoisting wire ropes 17 on both sides away from each other, and the linkage support 16 and the hoisting wire rope 17 cooperate with each other, so that the movable cover 12 is opened under the traction of the hoisting wire rope 17. The lower end of the movable cover 12 is hinged to the top of the casing body 11 through a movable hinge 15. It should be noted that the outer side wall of the movable cover 12 refers to the side facing away from the inner side of the casing body 11 when the top cover is in the closed state.

[0030] Furthermore, a casing edge banding strip 13 is provided on one side of the movable cover plate 12 away from the top of the casing body 11, and the length of the casing edge banding strip 13 is consistent with the length of the movable cover plate 12. Another rib plate 14 is symmetrically provided at both ends of the casing edge banding strip 13, and the other rib plate 14 is fixedly connected to the casing edge banding strip 13 and the movable cover plate 12 at the same time, so as to enhance the mechanical strength of the movable cover plate 12.

[0031] Furthermore, the top cover also includes a vertical fixing plate, two of which are symmetrically fixed on the top of the casing body 11, the vertical fixing plate is in a triangular shape, the movable cover plate 12 is in a rectangular shape, and the two vertical fixing plates and the two movable cover plates 12 together form a triangular prism with a hollow interior and an open side. The vertical fixing plates are arranged vertically.

[0032] Further, at least two linkage supports 16 are evenly arranged on the outer side wall of each movable cover plate 12. In a preferred technical solution, two linkage supports 16 are symmetrically fixedly arranged on the outer side wall of each movable cover plate 12; fixed shackle lifting lugs 18 are arranged on the outer side wall of the casing body 11 and near the top thereof, and the number and position of the fixed shackle lifting lugs 18 correspond to those of the linkage supports 16, and one end of the hoisting wire rope 17 is fixed to the fixed shackle lifting lug 18.

[0033] The use of the square steel casing 10 plays a key role in the construction of rotary excavation square pile anti-collapse holes. It not only helps control the flow of concrete, but also ensures the stability and accuracy of the construction to a certain extent.

[0034] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A soft soil square pile anti-collapse hole construction equipment, characterized by: The invention comprises a square steel casing (10), wherein the square steel casing (10) comprises a square casing body (11) with an opening facing upward, and a movable cover plate (12) is symmetrically hingedly arranged on the top of the casing body (11). When in a closed state, the two movable cover plates (12) form an inverted "V"-shaped top cover; a linkage support (16) is arranged on the outer wall of the movable cover plate (12), and a lifting wire rope (17) is arranged on the outer wall of the casing body (11). The end of the lifting wire rope (17) away from the casing body (11) passes through the linkage support (16) and is connected to a crane. The crane drives the lifting wire rope (17) to move, so that the tops of the two movable cover plates (12) move away from / close to each other, thereby realizing opening / closing of the top cover.

2. The construction equipment according to claim 1, characterized in that: At least two linkage supports (16) are evenly arranged on the outer side wall of each movable cover plate (12) in the horizontal direction, and a lifting wire rope (17) is correspondingly arranged on each linkage support (16).

3. The construction equipment according to claim 2, characterized in that: Two linkage supports (16) are symmetrically arranged on the outer side wall of each movable cover plate (12) along its horizontal length direction.

4. The construction equipment according to claim 2 or 3, characterized in that: A fixed shackle lifting lug (18) is provided on the outer wall of the casing body (11) and near the top thereof, the fixed shackle lifting lug (18) corresponds to the linkage support (16), and one end of the lifting wire rope (17) is detachably connected to the fixed shackle lifting lug (18).

5. The construction equipment according to claim 4, characterized in that: A vertical fixing plate is symmetrically arranged on the top of the casing body (11), and the shape of the vertical fixing plate is triangular and corresponds to the side cross-sectional shape of the two movable cover plates (12) when the two movable cover plates (12) are in a closed state, so that when the top cover is in a closed state, the two vertical fixing plates and the two movable cover plates (12) are combined to form a triangular prism with a hollow interior and an opening on one side, and the opening faces the casing body (11).

6. The construction equipment according to claim 5, characterized in that: A casing edge sealing strip (13) is provided on one side of the movable cover plate (12) away from the top of the casing body (11), and the length of the casing edge sealing strip (13) corresponds to the length of the movable cover plate (12).

7. The construction equipment according to claim 6, characterized in that: The two casing edge sealing strips (13) are arranged vertically, and when the top cover is in a closed state, the two casing edge sealing strips (13) are in close contact with each other.

8. The construction equipment according to claim 6, characterized in that: Another rib plate (14) is symmetrically arranged at both ends of the casing edge sealing strip (13), and the another rib plate (14) is fixedly connected to the casing edge sealing strip (13) and the movable cover plate (12).

9. The construction equipment according to claim 1, characterized in that: The movable cover plate (12) is hinged to the top of the casing body (11) via a movable hinge.

10. The construction equipment according to claim 1, characterized in that: It also includes a rotary drilling rig and a barrel extraction device, wherein the rotary drilling rig is used for digging into the stratum to form a pile hole, and the barrel extraction device is used for extracting the square steel casing (10) during the concrete pouring process.

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