Anti-slide pile excavation opening protection structure and construction method

Abstract

The application discloses an anti-slide pile excavation opening protection structure and a construction method, which comprises anchor rods, a plurality of which are arranged around a pile hole opening; a baffle, a lifting mechanism, a supporting frame, a side frame, a cross beam, an overhead rod, a cable-stayed mechanism, a vibration detection mechanism and a controller, the baffle has three and encloses a rectangular frame with a side opening, the upper end of the anchor rod is inserted into the positioning hole of the baffle, and the height of the side frame is at least greater than the height of the baffle; the cable-stayed mechanism is connected with the side frame and the supporting frame, and the adjacent side frames are bundled when being erected; the two ends of the overhead rod penetrate through two symmetrical side frames respectively, the overhead rod is a plurality of and is parallel to each other; and the controller is arranged to: if the current orientation of the side frame is upward, and the vibration information fed back by the vibration detection mechanism matches the preset rock falling impact condition, then the lifting mechanism is controlled to reduce the spacing between the supporting frame and the baffle to a preset spacing value. The application has the effects of improving the utilization rate of the anti-slide pile excavation opening protection structure and simplifying the construction process.

Description

Technical Field

[0001] This application relates to the field of geological disaster management technology, and in particular to a protective structure for the excavation opening of an anti-slide pile and its construction method. Background Technology

[0002] In subtropical humid climate zones, annual precipitation is relatively abundant. If the area is mountainous and mainly composed of carbonate and clastic rocks, the risk of landslides is relatively high.

[0003] Currently, landslide control can be achieved by installing anti-slide piles and retaining walls. Anti-slide piles require deep holes to be excavated at the toe of the steep slope, and then reinforced with concrete. During the construction of the pile holes, whether it's clearing debris or installing detonators, workers need to enter the holes. If debris or other contaminants fall into the holes during this stage, it can endanger the workers' lives. Therefore, protective structures need to be installed at the excavation opening.

[0004] The existing excavation opening protection structures mostly consist of a guardrail surrounding the pile opening, with a hinged door panel on one side of the guardrail to meet the needs of protection and access. When it is necessary to lift the excavated soil in the hole, a separate support is erected inside the guardrail, and lifting equipment is installed on the support to lift the excavated soil.

[0005] As can be seen from the above, the above setup has a relatively low utilization rate of the protective structure, and the process requires the installation and dismantling of two sets of excavation structures, which complicates the construction process. Therefore, this application proposes a new technical solution. Summary of the Invention

[0006] To improve the utilization rate of the anti-slide pile excavation opening protection structure and simplify the construction process, this application provides an anti-slide pile excavation opening protection structure and construction method.

[0007] In a first aspect, this application provides a protective structure for the excavation opening of an anti-slide pile, employing the following technical solution: A protective structure for the excavation opening of an anti-slide pile includes: Anchor bolts, which are multiple and arranged around the opening of the pile hole; A baffle with positioning holes along its height to fit the upper end of the anchor rod; The lifting mechanism is installed on the upper part of the baffle and the lifting direction is vertical; The support frame is installed on the upper part of the lifting mechanism; Side frame, one end of which is hinged to the side of the support frame; The crossbeam, with its parallel support frame, is used to install the slag lifting equipment; Aerial poles, which are multiple in number and used to fix the crossbeams; A cable-stayed mechanism, used to lock the upright side frame; Vibration detection mechanism, used to detect vibration information of side frames and baffles; The controller is electrically connected to the vibration detection structure and the lifting mechanism; The baffle has three sections and forms a rectangular frame with an opening on one side. The upper end of the anchor rod is inserted into the positioning hole of the baffle. The side frame has three sections and corresponds to the three baffles respectively. The height of the side frame is at least greater than the height of the baffle. The inclined cable mechanism connects the side frame and the support frame, and adjacent side frames are bound together when erected; the two ends of the overhead pole penetrate two symmetrical side frames respectively, and there are multiple overhead poles that are parallel to each other; The controller is configured such that if the side frame is currently facing upwards and the vibration information fed back by the vibration detection mechanism matches the preset falling rock impact conditions, the lifting mechanism is controlled to reduce the distance between the support frame and the baffle to the preset distance value.

[0008] Optionally, a support plate is fixed to the inner side of the upper part of the baffle, and the support plate is provided with a slot with an upward opening structure. The lifting mechanism includes a hydraulic cylinder, the cylinder body of the hydraulic cylinder is fixed to the support frame and the piston rod is inserted into the slot with the piston facing downward. A clamp is detachably connected to the baffle, and the clamp clamp clamps the piston rod of the hydraulic cylinder.

[0009] Optionally, the end of the side frame away from the hinge end is fixed with a right-angled triangular bracket on the side wall, one straight surface of the right-angled triangular bracket is horizontal when the side frame is vertical, the overhead pole rests on the triangular bracket and is secured with a clamp; the overhead pole penetrates the crossbeam.

[0010] Optionally, the inclined pull mechanism includes a traction rope, a base, a screw, a turntable, and a slider. The traction rope consists of two ropes, with one end of one rope fixed to the support frame and the other end of the traction rope fixed to the side frame. The base is block-shaped and has through holes. The opening diameter of the through holes is smaller than the diameter of the middle part. There are two screws located at both ends of the through holes. One end of the screw extends out of the through holes and fixes the turntable. A guide groove is provided on the base. The guide groove is located on the side of the through hole and connects the through hole to the outside. The slider is threaded to the screw and slidably connected to the through hole. The slider extends out of the guide groove to form a hook. The other end of the traction rope is fixed to the hook.

[0011] Optionally, the turntable has radial holes, and there are multiple radial holes distributed around the turntable; an L-plate is connected to the side frame and is detachably connected to one end of the side frame; the L-plates are arranged in pairs and the inner angles of the two L-plates in the same pair face each other; the other end of the L-plate is detachably connected to the support frame; and the base is placed between the two L-plates in the same pair.

[0012] Optionally, the vibration detection mechanism includes multiple IMU units, which are respectively mounted on each side frame and baffle and electrically connected to the controller.

[0013] Optionally, the controller controls the lifting mechanism to reduce the distance between the support frame and the baffle, which includes: Establish a one-to-one correspondence between each IMU unit and the lifting mechanism based on the installation location; If the vibration information of the IMU unit on one side of the structure reaches the preset baffle deformation threshold, the change in baffle height is obtained based on the vibration information. Adjust the shortening control amount of the lifting mechanism according to the change in baffle height, so that the support frame remains horizontal when the distance between the support frame and the baffle is the preset distance value.

[0014] Secondly, this application provides a construction method for protecting the excavation opening of anti-slide piles, which adopts the following technical solution: A construction method for protecting the excavation opening of anti-slide piles involves constructing an anti-slide pile excavation opening protection structure as described above at the excavation opening location.

[0015] In summary, this application includes at least one of the following beneficial technical effects: In the early stage of pile hole excavation, the side frame can be folded down to contact the ground and used as a guardrail with baffles. When it is necessary to clean the slag in the pile hole, the side frame can be folded up and used as a support foundation for the slag lifting equipment with crossbeams and other structures. Thus, this application can improve the utilization rate of the anti-slide pile excavation opening protection structure, eliminating the need to set up two or more sets of structures and simplifying the construction process. At the same time, it can also sense the impact on the baffle and side frame, and promptly reduce the distance between the support frame for installing the side frame and the baffle to avoid the distance between the support frame and the baffle becoming too large due to the need to raise the installation height of the equipment, thereby reducing the probability of falling rocks entering the pile hole and improving the protection effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a structural schematic diagram of the side frame and support frame of this application; Figure 3 This is a structural schematic diagram of the cable-stayed mechanism of this application; Figure 4 This is the control structure of the controller in this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Anchor bolt; 2. Baffle plate; 21. Support plate; 3. Lifting mechanism; 4. Support frame; 5. Side frame; 51. L-plate; 52. Right-angle triangular support; 61. Crossbeam; 62. Overhead pole; 7. Diagonal tension mechanism; 71. Traction rope; 72. Base; 73. Screw; 74. Turntable; 75. Slider; 8. Vibration detection mechanism; 81. IMU unit; 9. Controller. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0019] This application discloses a protective structure for the excavation opening of an anti-slide pile.

[0020] Reference Figure 1-4 The anti-slide pile excavation opening protection structure includes anchor rod 1, baffle 2, lifting mechanism 3, support frame 4, side frame 5, crossbeam 61, overhead pole 62, inclined tension mechanism 7, vibration detection mechanism 8, and controller 9.

[0021] Anchor rod 1 is a metal rod whose lower end is inserted into the ground. It can be driven directly into the ground or the anchor rod 1 can be lowered into a hole and then poured with concrete. The upper end of anchor rod 1 extends out of the ground. There are multiple anchor rods 1, which are arranged around the opening of the pile hole, forming a rectangular structure when viewed from above.

[0022] The baffle 2 has three sections corresponding to the three interconnected sides of the aforementioned rectangle. The height of the baffle 2 should be between 0.3m and 0.7m. The side openings of the structure enclosed by the baffle 2 should not face steep slopes to ensure that debris can be transported out through the pile hole opening by a wheelbarrow when necessary, and to provide safety protection in case of rockfall on steep slopes. Positioning holes for the anchor rods 1 are made along the height direction on the baffle 2; that is, after installation, the anchor rods 1 are inserted into the positioning holes of the baffle 2 to fix the baffle 2. This connection method makes the installation and disassembly of this application relatively more convenient.

[0023] A support plate 21 is fixed to the inner side of the upper part of the baffle 2. A reinforcing rib can be added to the lower part of the support plate 21 to enhance its strength. The support plate 21 has an inwardly recessed groove with an upper opening structure.

[0024] Reference Figure 1 The lifting mechanism 3 is installed on the upper part of the baffle 2, and includes a hydraulic cylinder. The support frame 4 is located above the baffle 2, with the pile hole opening below it; the cylinder body of the hydraulic cylinder is fixed upward to the bottom of the support frame 4, and the piston rod end of the hydraulic cylinder is inserted downward into the slot; multiple hydraulic cylinders cooperate to support the support frame 4. A clamp is fixed to the baffle 2 with bolts, and the clamp holds the piston rod of the hydraulic cylinder for stability.

[0025] Reference Figure 2In this embodiment, the support frame 4 is a grid-shaped metal frame, and an opening is formed on one side of the structure opening surrounded by the three baffles 2 from the middle, so that it can serve as a shield and protection above the pile hole, as well as the foundation of the support structure for lifting the slag inside the hole, without affecting people entering and exiting the pile hole, and with minimal impact on the lifting equipment to remove the slag inside the pile hole.

[0026] Side frame 5 is also a metal structure, with its lower end hinged to support frame 4. When it is necessary to install lifting equipment to remove slag from the pile hole, side frame 5 remains upright and works with other structures for support; before removing slag from the hole, side frame 5 can rotate outwards, with its lower end resting on the ground as a guardrail.

[0027] In this embodiment, the height of the side frame 5 is at least greater than the height of the baffle 2, that is, the side frame 5, which is attached to the ground, is tilted to form a triangular support structure with the baffle 2, thereby improving the stability when used as a guardrail.

[0028] Reference Figure 1 and Figure 3 In order to keep the side frame 5 upright, this application uses a diagonal bracing mechanism 7, which specifically includes a traction rope 71, a base 72, a screw 73, a turntable 74, and a slider 75.

[0029] There are two traction ropes 71, one end of which is tied to the support frame 4, and the other end of which is tied to the side frame 5; the traction ropes 71 can be steel wire ropes.

[0030] The base 72 is block-shaped and has a through hole, the opening diameter of which is smaller than the diameter of the middle part; the base 72 can be formed by welding two halves together. There are two screws 73 located at both ends of the through hole, one end of the screw 73 extends out of the through hole and fixes the turntable 74.

[0031] A guide groove is provided on the base 72. The guide groove is located on the side of the through hole and connects the through hole to the outside. The slider 75 is threaded to the screw 73 and slidably connected to the through hole. The slider 75 extends out of the guide groove to form a hook. The other end of the traction rope 71 is fixed to the hook.

[0032] According to the above setup, the operator drives the screw 73 to rotate via the turntable 74, which in turn causes the slider 75 to move the traction rope 71, thereby changing the length of the inclined tension mechanism 7 and thus fixing the side frame 5. There are multiple inclined tension mechanisms 7, and each side frame 5 is connected to at least one of them.

[0033] In one embodiment of this structure, considering that the inclined cable mechanism 7 is suspended, making it relatively inconvenient to rotate the turntable 74, the following settings are also made: An L-plate 51 is provided, with one end of the L-plate 51 fixed to the support frame 4 by bolts and the other end fixed to the vertical side frame 5 by bolts; the L-plates 51 are provided in pairs and the inner angles of the two L-plates 51 in the same pair face each other.

[0034] The base 72 is placed between two L plates 51 of the same pair; radial holes are provided on the turntable 74, and there are multiple radial holes distributed around the turntable 74.

[0035] According to the above settings, the staff can insert the appropriate rod into the radial hole, hold the outer end of the rod and apply force to rotate the turntable 74 relatively easily, and tighten the side frame 5 and the support frame 4.

[0036] Reference Figure 1 A right-angled triangular bracket 52 is fixed on the side wall at the end of the side frame 5 away from the hinge end. The right-angled triangular bracket 52 is a frame structure and is a right-angled triangle when viewed from the front. One straight surface of the right-angled triangular bracket 52 is horizontal when the side frame 5 is vertical.

[0037] The two ends of the aforementioned overhead pole 62 penetrate the two symmetrical side frames 5 and rest on the right-angled triangular bracket 52, and are fixed to the right-angled triangular bracket 52 by bolts or by clamps; there are multiple overhead poles 62 and they are parallel to each other.

[0038] The crossbeam 61 is shaped like an "I" at one end, with a pre-drilled opening at the top for the overhead pole 62 to pass through. The overhead pole 62 passes through the opening, and limiting bolts are installed on both sides of the crossbeam 61, with the limiting bolts threaded to the overhead pole 62. Equipment used for lifting the slag in the pile hole (such as a winch) can be installed on the crossbeam 61.

[0039] Reference Figure 4 In one embodiment of this structure, the vibration detection mechanism 8 includes multiple IMU units 81, each IMU unit being mounted on a side frame 5 and a baffle 2 respectively. The IMU unit 81 is electrically connected to a controller 9; the controller 9 includes an MCU controller and is electrically connected to a hydraulic cylinder controller. The IMU unit 81 mainly includes an accelerometer and a gyroscope. It is known that velocity can be obtained by integrating acceleration, and displacement can be calculated based on this. The output and signal processing methods of the IMU unit 81 are existing technologies and will not be described in detail here.

[0040] The controller 9 is set to: if the side frame 5 is currently facing upwards and the vibration information fed back by the vibration detection mechanism 8 matches the preset falling stone impact conditions, then control the lifting mechanism 3 (i.e., the hydraulic cylinder) to reduce the distance between the support frame 4 and the baffle 2 to the preset distance value.

[0041] When the side frame 5 is not used to support the overhead poles 62 and crossbeams 61, it can be rotated to tilt downwards to touch the ground as a guardrail. However, when the side frame 5 is facing upwards to support the foundation installation of the pile hole soil lifting equipment, the baffle 2 serves as the lower guardrail, and the side frame 5 serves as the higher guardrail. But in this case, to meet the installation height requirements of the lifting equipment, the lifting mechanism 3 needs to raise the side frame, creating a significant gap between the support frame 4 and the baffle 2. This means that if a rockfall occurs on a steep slope, the rock may enter the pile hole through the gap between the baffle 2 and the support frame 4, posing a construction hazard.

[0042] By setting up the vibration detection mechanism 8 and controller 9, it is possible to detect large rockfalls in advance. After all, rockfalls and landslides usually start with small stones falling, so the construction danger can be reduced by timely reducing the distance between the support frame 4 and the baffle 2.

[0043] In one embodiment, the aforementioned control lifting mechanism 3 (i.e., hydraulic cylinder) reduces the distance between the support frame 4 and the baffle 2 to a preset distance value, specifically: Establish a one-to-one correspondence between each IMU unit 81 and the lifting mechanism 3 (hydraulic cylinder) based on the installation location; Example: The IMU unit 81 on the left corresponds to the hydraulic cylinder on the left. If the vibration information (here referring to the triaxial displacement) of the IMU unit 81 on one side of the structure reaches the preset deformation threshold of the baffle 2, then the height change of the baffle 2 (more specifically, the height change of the IMU unit 81) is obtained based on the vibration information (i.e., the Z-axis displacement). Adjust the shortening control amount of the lifting mechanism 3 according to the height change of the baffle 2 (example: if it is originally shortened by 0.5m and the height change is 0.1m, change it to shorten by 0.4m) so that the distance between the support frame 4 and the baffle 2 is the preset distance value, and the support frame 4 is horizontal.

[0044] Based on the above settings, the probability of structural tilting above the support frame 4 can be reduced, thus reducing the risk of the structure collapsing.

[0045] This application also discloses a construction method for protecting the excavation opening of anti-slide piles.

[0046] The construction method for protection of the excavation opening of anti-slide piles includes, as described in any of the foregoing embodiments, constructing an anti-slide pile excavation opening protection structure at the excavation opening. The specific setting method and function have been described above and will not be repeated here.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protective structure for the excavation opening of an anti-slide pile, characterized in that, include: Anchor bolts (1) are multiple and arranged around the opening of the pile hole; The baffle (2) has positioning holes along its height direction to fit the upper end of the anchor rod (1); The lifting mechanism (3) is installed on the upper part of the baffle (2) and the lifting direction is vertical; The support frame (4) is installed on the upper part of the lifting mechanism (3); Side frame (5), one end of which is hinged to the side of support frame (4); A crossbeam (61) with a parallel support frame (4) for installing a slag lifting device; The overhead poles (62) are multiple and are used to fix the crossbeams (61); A diagonal bracing mechanism (7) is used to lock the upright side frame (5). Vibration detection mechanism (8), which is used to detect vibration information of side frame (5) and baffle (2); The controller (9) is electrically connected to the vibration detection structure and the lifting mechanism (3). Among them, the baffle (2) has three rectangular frames that form an opening on one side, the upper end of the anchor rod (1) is inserted into the positioning hole of the baffle (2), the side frame (5) has three and corresponds to the three baffles (2) respectively, and the height of the side frame (5) is at least greater than the height of the baffle (2); The inclined cable mechanism (7) connects the side frame (5) and the support frame (4). When erected, the adjacent side frames (5) are bound together. The two ends of the overhead pole (62) penetrate two symmetrical side frames (5) respectively. There are multiple overhead poles (62) that are parallel to each other. The controller (9) is configured to: if the side frame (5) is currently facing upwards and the vibration information fed back by the vibration detection mechanism (8) matches the preset falling stone impact conditions, then control the lifting mechanism (3) to reduce the distance between the support frame (4) and the baffle (2) to the preset distance value. The support frame (4) is a grid-shaped metal frame, and an opening is formed on one side of the structure opening surrounded by the three baffles (2) from the middle, so that it can serve as a shield and protection above the pile hole, as well as the foundation of the support structure for lifting the slag in the hole, without affecting people entering and exiting the pile hole, and causing less impact on the lifting equipment to remove the slag in the pile hole. The side frame (5) is also a metal structure. Its lower end is hinged to the support frame (4). When it is necessary to install lifting equipment to transport the slag in the pile hole, the side frame (5) remains upright and works with other structures as support. Before the slag in the hole is removed, the side frame (5) rotates outward and its lower end overlaps the ground as a guardrail.

2. The anti-slide pile excavation opening protection structure according to claim 1, characterized in that: A support plate (21) is fixed on the inner side of the upper part of the baffle (2). The support plate (21) is provided with a slot with an upward opening structure. The lifting mechanism (3) includes a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixed to the support frame (4) and the piston rod is inserted into the slot with the piston facing downward. A clamp is detachably connected to the baffle (2). The clamp clamp clamps the piston rod of the hydraulic cylinder.

3. The anti-slide pile excavation opening protection structure according to claim 1, characterized in that: The side frame (5) is fixed with a right-angled triangular bracket (52) on the side wall at the end away from the hinge end. One right-angled surface of the right-angled triangular bracket (52) is horizontal when the side frame (5) is vertical. The overhead rod (62) rests on the right-angled triangular bracket (52) and is secured with a clamp. The overhead rod (62) penetrates the crossbeam (61).

4. The anti-slide pile excavation opening protection structure according to claim 1, characterized in that: The inclined cable mechanism (7) includes a traction rope (71), a base (72), a screw (73), a turntable (74), and a slider (75). The traction rope (71) consists of two ropes, one end of which is fixed to the support frame (4), and the other end of which is fixed to the side frame (5). The base (72) is block-shaped and has a through hole. The opening diameter of the through hole is smaller than the diameter of the middle part. There are two screws (73) located at both ends of the through hole. One end of the screw (73) extends out of the through hole and fixes the turntable (74). The base (72) has a guide groove, which is located on the side of the through hole and connects the through hole to the outside. The slider (75) is threaded to the screw (73) and slidably connected to the through hole. The slider (75) extends out of the guide groove to form a hook. The other end of the traction rope (71) is fixed to the hook.

5. The anti-slide pile excavation opening protection structure according to claim 4, characterized in that: The turntable (74) has radial holes, and there are multiple radial holes distributed around the turntable (74); the side frame (5) is connected to an L plate (51) and is detachably connected to one end of the L plate (51). The L plates (51) are arranged in pairs and the inner angles of the two L plates (51) in the same pair face each other. The other end of the L plate (51) is detachably connected to the support frame (4). The base (72) is placed between the two L plates (51) in the same pair.

6. The anti-slide pile excavation opening protection structure according to claim 1, characterized in that: The vibration detection mechanism (8) includes multiple IMU units (81), which are respectively installed on each side frame (5) and baffle (2) and are electrically connected to the controller (9).

7. The anti-slide pile excavation opening protection structure according to claim 6, characterized in that: The controller (9) controls the lifting mechanism (3) to reduce the distance between the support frame (4) and the baffle (2), which includes: Establish a one-to-one correspondence between each IMU unit (81) and the lifting mechanism (3) based on the installation location; If the vibration information of the IMU unit (81) on one side of the structure reaches the preset deformation threshold of the baffle (2), the change in the height of the baffle (2) is obtained based on the vibration information. Adjust the shortening control amount of the lifting mechanism (3) according to the height change of the baffle (2) so that the distance between the support frame (4) and the baffle (2) is the preset distance value, and the support frame (4) remains horizontal.

8. A construction method for protecting the excavation opening of anti-slide piles, characterized in that: An anti-slide pile excavation protection structure as described in any one of claims 1-7 is constructed at the excavation site.

Images