Anti-floating pile structure of underneath passing tunnel and expansion drilling method
Through the expansion-type anti-floating pile structure and the hole inclination control device, the anchoring requirements of large-area deep anti-floating piles under the tunnel are solved, and the anti-floating problem is achieved. Through the combination of the steel cage skeleton and the expansion hole, the anti-floating problem that has not been effectively solved in the existing technology is solved, and the anti-floating technical problem is achieved. Through the method of the steel cage and the expansion hole, the anti-floating effect is achieved, and the verticality control of the drilling equipment and the expansion of the hole wall are solved, thereby improving the anti-floating effect.
Patent Information
- Application Number
- CN202510733111.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2025-09-19
AI Technical Summary
In the existing technology, the anti-floating pile structure of the underpass tunnel cannot meet the anchoring effect under the requirements of large area and depth, and the drilling equipment is difficult to ensure verticality, resulting in poor anti-floating effect.
The expansion-type anti-floating pile structure uses a steel cage skeleton and expansion positioning components, combined with a hole inclination control device, to achieve verticality control of the drilled hole and expansion of the hole wall, reducing the number of drilled holes and improving the anti-floating effect.
It achieves a highly efficient anti-floating effect on the bottom plate of the underpass tunnel, saves construction costs, improves the anti-floating effect of the compressive strength, meets the construction requirements of verticality, ensures a high anti-floating effect, reduces the number of drilling holes, and saves construction costs.
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Figure CN120666784A_ABST
Abstract
Description
Technical field:
[0001] The invention relates to the technical field of anti-floating piles, in particular to an anti-floating pile structure for underpass tunnels and an expansion drilling method. Background technology:
[0002] With the rapid development of urban construction and transportation engineering, the development and utilization of underground space has become a growing trend. Consequently, the buoyancy generated by groundwater has a particularly significant impact on underground structures. The deeper the underground structure is buried, the greater the buoyancy generated by groundwater. The effects of groundwater pressure on underground structures are primarily manifested in: swells in basement slabs, leakage leading to slab failure; uneven buoyancy of underground buildings, which can cause cracks at beam-column joints, cracks in the slab, and tilting of the building.
[0003] The existing anti-floating anchor rods are used for high-pressure concrete injection to achieve a high anchoring effect. However, when constructing deep anti-floating piles (more than 10m) in large areas such as underpasses, simple anti-floating anchor rods cannot meet the requirements of anchoring large-area base plates. In addition, when setting up existing anti-floating piles, vertical requirements must be met. The satisfaction of vertical requirements depends fundamentally on drilling construction. Existing drilling equipment does not have the ability to meet high drilling verticality requirements. At the same time, the anti-floating piles formed by the simple contact between the pile body concrete and the hole wall have poor anti-floating effect and cannot meet high anti-floating effect. Summary of the invention:
[0004] In view of this, it is necessary to design an anti-floating pile structure and expansion drilling method for the underpass tunnel that can overcome the above problems, and adopt an expansion method to increase the anti-floating effect and achieve high-strength anti-floating of the bottom plate.
[0005] In the first aspect, the present application provides an anti-floating pile structure for passing through a tunnel, comprising: a steel cage frame; an expansion positioning assembly; the expansion positioning assembly comprises: a positioning plate connected to the steel cage frame, a deformation rod group relatively hingedly connected to the positioning plate, and a counterweight rod for driving the deformation rod group to be located in a first setting state and a second setting state; wherein, when the bottom weight of the counterweight rod is suspended in the air and drives the deformation rod group to be located in the first setting state, the deformation rod group is located inside the steel cage frame; when the bottom of the counterweight rod touches the bottom and presses to drive the deformation rod group to be located in the second setting state, the deformation rod group extends relatively along the gap of the steel cage frame to the outside of the steel cage frame.
[0006] Preferably, a plurality of expansion positioning components are provided along the height direction of the steel cage skeleton.
[0007] Preferably, each of the deformable rod groups includes a first connecting rod and a second connecting rod hingedly connected to the first connecting rod; wherein,
[0008] The first connecting rod is hingedly connected to the positioning plate;
[0009] The second connecting rod is hingedly connected to the counterweight rod.
[0010] Preferably, the first connecting rod is provided with inverted teeth.
[0011] Preferably, when the deformable rod group is in the first setting state, the bottom of the counterweight rod is lower than the bottom of the steel cage skeleton;
[0012] When the deformable rod group is in the second setting state, the bottom of the counterweight rod is flush with the bottom of the steel cage skeleton.
[0013] In the present application, when the steel cage skeleton is lowered, the deformable rod group is in the first set state and does not rub against the hole wall; after the bottom of the counterweight rod group contacts the bottom of the hole, the deformable rod group is pressed to extend outward to achieve expansion, and when pouring concrete, high-pressure expansion concrete is injected into the expansion positions of the deformable rod group and the hole wall, thereby reducing the number of drilling holes and saving construction costs.
[0014] In a second aspect, an expansion drilling method is provided, including a drilling method for cooperating with the above-mentioned anti-floating pile structure for underpass tunneling; characterized in that the method comprises the following steps:
[0015] After positioning, the steel casing is buried, and the vertical deviation of the steel casing is less than 0.5%. According to the geological survey results, the expansion position of the hole wall is located, and each expansion position of the hole wall corresponds to the deformation position of the deformation rod group one by one;
[0016] Install a hole deflection control device on the drilling equipment and start drilling operations;
[0017] During the rotation and deepening of the drilling equipment, the hole deviation control device positions the hole deviation within the construction range;
[0018] After reaching the hole wall expansion position, the hole inclination control device deforms and completes the circumferential hole expansion operation;
[0019] After the drilling depth is met, the drilling equipment exits the drilling process.
[0020] Preferably, the drilling equipment includes: a rotary drilling rod matched with the power head of the rotary drilling rig, the hole inclination control device provided on the rotary drilling rod, and a drill cutting barrel pinned to the rotary drilling rod; wherein,
[0021] The hole deflection control device comprises: a lower annular plate sleeved on the lower part of the rotary drilling rod, and an upper annular plate slidably sleeved on the rotary drilling rod; a drill tooth device in an avoidance working state and a hole expansion working state is installed between the lower annular plate and the upper annular plate;
[0022] When the upper annular plate is close to the lower annular plate, the tooth drilling device is in the avoidance working state;
[0023] When the upper annular plate is away from the lower annular plate, the drilling device is in the hole expanding working state.
[0024] Preferably, outer walls of the upper annular plate and the lower annular plate are rotatably connected with universal balls, and a plurality of telescopic driving members are connected between the upper annular plate and the lower annular plate.
[0025] Preferably, the drilling device comprises: a hinged rod hingedly connected between the upper circular plate and the lower circular plate, and a positioning plate connected to the hinged end of the hinged rod; wherein the positioning plate is equipped with scraping teeth.
[0026] Preferably, the cuttings barrel is equipped with a first position sensor, and the positioning plate is equipped with a second position sensor.
[0027] In this application, the hole inclination control device on the drilling equipment can effectively ensure that the verticality of the drilling hole is within the construction range. At the same time, when the scraper is in the position where the hole wall needs to be expanded, the upper circular plate is gradually moved away from the lower circular plate to avoid the large deflection of the rotary drill rod caused by the contact between the scraper and the hole wall. At the same time, the drill barrel and the scraper rotate synchronously, and the penetration rate of the rotary drill rod is consistent with the extension rate of the telescopic drive part, thereby meeting the requirements of synchronous drilling and hole wall expansion. Description of the drawings:
[0028] Figure 1 A schematic structural diagram of an anti-floating pile structure for an underpass tunnel provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of the drilling equipment provided in an embodiment of the present application; Figure 3 A schematic diagram of the drilling equipment in the embodiment of the present application in the state of hole expansion; Figure 4 A schematic diagram of the structure of a hole deviation control device provided in an embodiment of the present application; Figure 5 A schematic structural diagram of the upper circular ring plate provided in an embodiment of the present application. Figure numbers: steel casing-100, rotary drilling rod-200, connecting pin-210, drill cutting barrel-300, first position sensor-310, hot coil spring-400, connecting piece-410, hole inclination control device-500, upper circular plate-510, universal ball-520, telescopic drive member-530, first hinged rod-540, second hinged rod-550, positioning plate-560, scraper-570, second position sensor-580, lower circular plate-590, hole wall-600, steel cage skeleton-700, positioning plate-710, deformation rod group-720, inverted tooth-730, counterweight rod-740. Specific implementation method:
[0029] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0030] It should be noted that, unless otherwise defined, technical or scientific terms used in one or more embodiments of this specification should have the same ordinary meaning as understood by persons of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in one or more embodiments of this specification do not denote any order, quantity, or importance, but are merely used to distinguish different components.
[0031] Words such as “include” or “comprising” mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. Words such as “connected” or “connected” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Up”, “down”, “left”, “right”, etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.
[0032] In order to facilitate understanding of the anti-floating pile structure and expansion drilling method for underpass tunnels provided in the embodiments of the present application, its application scenario is first explained. The existing anti-floating anchor rods are used for high-pressure concrete injection to achieve a high anchoring effect. However, when constructing deep (more than 10m) anti-floating piles in large areas such as underpass tunnels, simple anti-floating anchor rods cannot meet the requirements of anchoring large-area bottom plates; and when setting up existing anti-floating piles, vertical requirements must be met. The fundamental satisfaction of vertical requirements lies in the drilling construction. The existing drilling equipment does not have a high requirement for meeting the verticality of drilling. At the same time, the anti-floating piles formed by the simple contact between the pile body concrete and the hole wall have poor anti-floating effect and cannot meet a high anti-floating effect. In view of this, the anti-floating pile structure and expansion drilling method for underpass tunnels of the present application adopt an expansion method to increase the anti-floating effect and achieve high-strength anti-floating of the bottom plate.
[0033] refer to Figure 1 , Figure 1 A structural schematic diagram of an anti-floating pile structure for an underpass tunnel is shown; the anti-floating pile structure for an underpass tunnel includes a steel cage frame 700; the steel cage frame 700 in the present application is used for installation in a drilled hole, and a plurality of expansion positioning assemblies are provided on the steel cage assembly frame along the height direction, the expansion positioning assembly including: a positioning plate 710 connected to the steel cage frame 700, a deformation rod group 720 relatively hingedly connected to the positioning plate 710, and a counterweight rod 740 for driving the deformation rod group 720 to be located in a first setting state and a second setting state; wherein, when the bottom of the counterweight rod 740 is suspended in the air and drives the deformation rod group 720 to be located in the first setting state, the deformation rod group 720 is located inside the steel cage frame 700; when the bottom of the counterweight rod 740 touches the bottom and presses and drives the deformation rod group 720 to be located in the second setting state, the deformation rod group 720 extends relatively along the gap of the steel cage frame 700 to the outside of the steel cage frame 700.
[0034] During the specific setup, an expansion positioning assembly is installed within the bound steel cage frame 700, and a gap is reserved at the position of each deformable rod group 720 to allow the deformable rod group 720 to extend to the outside of the steel cage frame 700 after deformation. The positioning plate 710 is welded to the steel cage frame 700, and each deformable rod group 720 includes a first connecting rod and a second connecting rod hingedly connected to the first connecting rod. The first and second connecting rods are hingedly connected and assume a prismatic shape when the steel cage frame 700 is hoisted into the drilled hole. The first connecting rod is hingedly connected to the positioning plate 710, and the second connecting rod is hingedly connected to the counterweight rod 740. The first connecting rod is provided with inverted teeth 730. Furthermore, when the deformable rod group 720 is in the first setting state, the bottom of the counterweight rod 740 is lower than the bottom of the steel cage frame 700. When the deformable rod group 720 is in the second setting state, the bottom of the counterweight rod 740 is flush with the bottom of the steel cage frame 700.
[0035] As can be seen from the above structure, when the steel cage skeleton 700 is hoisted into the borehole, the counterweight rod 740, under the action of its actual weight, drives the deformable rod group 720 into a prismatic state. At this time, the deformable rod group 720 is close to each other and stored in the steel cage skeleton 700, without affecting the placement of the steel cage. However, after the counterweight rod 740 contacts the bottom of the borehole, the counterweight rod 740 rises and drives the deformable rod group 720 away from each other, and the entire deformable rod group 720 forms a trapezoidal state. At this time, the inverted teeth 730 are inserted into the expanded position of the hole wall 600. After the high-pressure concrete is injected, the deformable rod group 720 in the expanded position forms a large resistance between the concrete and the concrete, creating an anti-floating effect.
[0036] In the present application, when the steel cage frame 700 is lowered, the deformable rod group 720 is in the first set state and does not rub against the hole wall 600; after the bottom of the counterweight rod group contacts the bottom of the hole, the deformable rod group 720 is pressed to extend outward to achieve expansion, and when pouring concrete, high-pressure expansion concrete is injected into the expansion positions of the deformable rod group 720 and the hole wall 600, thereby reducing the number of drilling holes and saving construction costs.
[0037] refer to Figure 2 and Figure 3 As shown in , an expansion drilling method includes a drilling method for cooperating with the above-mentioned anti-floating pile structure of the underpass tunnel; comprising the following steps:
[0038] Step 1: After positioning, bury the steel casing 100 with a vertical deviation of <0.5%. According to the geological survey results, locate the expansion position of the hole wall 600. Each expansion position of the hole wall 600 corresponds to the deformation position of the deformation rod group 720.
[0039] Step 2: Install the hole inclination control device 500 on the drilling equipment and start the drilling operation.
[0040] Step 3: During the rotation and deepening of the drilling equipment, the hole inclination control device 500 positions the hole inclination deviation within the construction range.
[0041] Step 4: After reaching the expansion position of the hole wall 600, the hole inclination control device 500 is deformed and the circumferential hole expansion operation is completed.
[0042] Step 5: After the drilling depth is met, the drilling equipment exits the drilling process.
[0043] When specifically implementing the vertical drilling and hole wall 600 expansion requirements of the above steps, the drilling equipment in this application includes a rotary drilling rod 200 that cooperates with the power head of the rotary drilling rig, a hole inclination control device 500 arranged on the rotary drilling rod 200, and a drill cutting barrel 300 pinned to the rotary drilling rod 200.
[0044] Combine Figure 4 As shown in FIG, the hole deflection control device 500 includes: a lower annular plate 590 mounted on the lower portion of the rotary drilling rod 200, and an upper annular plate 510 (as shown in FIG) mounted on the rotary drilling rod 200. Figure 5); a drilling tooth device is installed between the lower annular plate 590 and the upper annular plate 510, which is in the avoidance working state and the reaming working state; the lower annular plate 590 in the present application is fixedly connected to the rotary drilling drill rod 200, and the drill rod square head of the rotary drilling drill rod 200 is connected to the drill cutting barrel 300 through the connecting pin 210, and the rotary drilling drill rod 200 is equipped with a hot coil spring 400, the lower end of the hot coil spring 400 is connected to the drill cutting barrel 300 through the connecting piece 410, and the upper end of the hot coil spring 400 is connected to the lower annular plate 590, thereby ensuring the safety factor of the drill cutting barrel 300 and ensuring a higher connection stability.
[0045] At the same time, the outer walls of the annular plate and the lower annular plate 590 are rotatably connected with universal ball transfers 520, and a plurality of telescopic drive members 530 are connected between the upper annular plate 510 and the lower annular plate 590. The provided universal ball transfers 520 are in contact with the hole wall 600 to achieve guided positioning drilling performance, ensuring that the verticality of the drilled hole is always in standard construction requirements. When the upper annular plate 510 is close to the lower annular plate 590, the drilling gear device is in an avoidance working state; when the upper annular plate 510 is away from the lower annular plate 590, the drilling gear device is in an expansion working state. It needs to be specifically explained that the telescopic drive member 530 can adopt many methods such as an electric telescopic rod, a rod driven by a motor to climb the rack, etc. The electric drive method adopts a built-in lithium battery drive method, etc., and the telescopic start is controlled by the outside world. These are all technologies well known to those skilled in the art and will not be described in detail here.
[0046] The tooth drilling device includes: a hinged rod hingedly connected between an upper circular plate 510 and a lower circular plate 590, and a positioning plate 560 connected to the hinged end of the hinged rod; wherein the positioning plate 560 is equipped with a scraping tooth 570. The hinged rod includes a first hinged rod 540 and a second hinged rod 550. The first hinged rod 540 is hingedly connected to the upper circular plate 510, and the second hinged rod 550 is hingedly connected to the lower circular plate 590. The first hinged rod 540 and the second hinged rod 550 are hingedly connected. The positioning plate 560 is fixedly mounted on the hinge shaft ends of the first hinged rod 540 and the second hinged rod 550, and the positioning plate 560 does not rotate with the hinge shaft ends. When the tooth drilling device is in the avoidance working state, the initial state of the first hinged rod 540 and the second hinged rod 550 is V-shaped. When the tooth drilling device is in the reaming working state, the first hinged rod 540 and the second hinged rod 550 are in a vertical state.
[0047] In order to further improve synchronization, the cuttings barrel 300 is equipped with a first position sensor 310 , and the positioning plate 560 is equipped with a second position sensor 580 .
[0048] It can be seen from the above structure that when the upper annular plate 510 is driven by the telescopic drive member 530 to move upward along the slide groove of the rotary drilling rod 200, the hinged shaft ends of the first hinged rod 540 and the second hinged rod 550 drive the positioning plate 560 to extend outward in parallel. At this time, the scraper 570 is in contact with the hole wall 600, and when the rotation and downward extension of the rotary drilling rod 200 are synchronized, the extension rate of the telescopic drive member 530 is the same, so that the scraper 570 gradually penetrates into the hole wall 600 to drill a ring-shaped expansion hole; by opening the expansion holes in sequence along the height direction of the drilling hole, corresponding to the binding of the steel cage frame 700 and the installation of the expansion positioning component, the deformation rod group 720 penetrates into the expansion hole in sequence to achieve a larger resistance anti-floating effect.
[0049] In the present application, the hole inclination control device 500 on the drilling equipment can effectively ensure that the verticality of the drilling hole is within the construction range. At the same time, when the scraper 570 is located in the position where the hole wall 600 needs to be expanded, the upper annular plate 510 is gradually moved away from the lower annular plate 590 to avoid the large deflection of the rotary drill rod 200 caused by the contact between the scraper 570 and the hole wall 600. At the same time, the drill barrel 300 rotates synchronously with the scraper 570, and the penetration rate of the rotary drill rod 200 is consistent with the extension rate of the telescopic drive member 530, thereby meeting the requirements of synchronous drilling and hole wall 600 expansion.
[0050] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as above, which are not provided in detail for the sake of simplicity.
[0051] In addition, to simplify the description and discussion, and so as not to obscure one or more embodiments of the present specification, well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided figures. In addition, devices may be shown in block diagram form to avoid obscuring one or more embodiments of the present specification, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which one or more embodiments of the present specification will be implemented (i.e., these details should be fully within the purview of those skilled in the art). Where specific details (e.g., circuits) are set forth to describe exemplary embodiments of the present disclosure, it will be apparent to those skilled in the art that one or more embodiments of the present specification may be implemented without these specific details or with variations in these specific details. Accordingly, these descriptions should be considered illustrative rather than restrictive.
[0052] While the disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.
[0053] The one or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification shall be included within the scope of protection of this disclosure.
Claims
1. An anti-floating pile structure for an underpass tunnel, characterized in that: include: Steel cage skeleton; Expansion positioning assembly; the expansion positioning assembly includes: a positioning plate connected to the steel cage frame, a deformation rod group relatively hingedly connected to the positioning plate, and a counterweight rod for driving the deformation rod group to be located in a first setting state and a second setting state; wherein, When the bottom of the counterweight rod is suspended in the air and drives the deformable rod group to be in the first setting state, the deformable rod group is located inside the steel cage skeleton; When the bottom of the counterweight rod touches the bottom and presses to drive the deformable rod group to be in the second set state, the deformable rod group extends relatively to the outside of the steel cage frame along the gap of the steel cage frame.
2. The anti-floating pile structure for an underpass tunnel according to claim 1, characterized in that: The expansion positioning components are arranged in plurality along the height direction of the steel cage frame.
3. The anti-floating pile structure for an underpass tunnel according to claim 1, characterized in that: Each of the deformable rod groups includes a first connecting rod and a second connecting rod hingedly connected to the first connecting rod; wherein, The first connecting rod is hingedly connected to the positioning plate; The second connecting rod is hingedly connected to the counterweight rod.
4. The anti-floating pile structure for an underpass tunnel according to claim 3, characterized in that: The first connecting rod is provided with inverted teeth.
5. The anti-floating pile structure for an underpass tunnel according to claim 4, characterized in that: When the deformable rod group is in the first setting state, the bottom of the counterweight rod is lower than the bottom of the steel cage skeleton; When the deformable rod group is in the second setting state, the bottom of the counterweight rod is flush with the bottom of the steel cage skeleton.
6. An expansion drilling method, comprising a drilling method for cooperating with the anti-floating pile structure of the tunnel underpass according to any one of claims 1 to 5; characterized in that: The following steps are involved: After positioning, the steel casing is buried, and the vertical deviation of the steel casing is less than 0.5%. According to the geological survey results, the expansion position of the hole wall is located, and each expansion position of the hole wall corresponds to the deformation position of the deformation rod group one by one; Install a hole deflection control device on the drilling equipment and start drilling operations; During the rotation and deepening of the drilling equipment, the hole deviation control device positions the hole deviation within the construction range; After reaching the hole wall expansion position, the hole inclination control device deforms and completes the circumferential hole expansion operation; After the drilling depth is met, the drilling equipment exits the drilling process.
7. The expansion drilling method according to claim 6, wherein: The drilling equipment includes: a rotary drilling rod matched with the power head of the rotary drilling rig, the hole inclination control device provided on the rotary drilling rod, and a drill cutting barrel pinned to the rotary drilling rod; wherein, The hole deflection control device comprises: a lower annular plate sleeved on the lower part of the rotary drilling rod, and an upper annular plate slidably sleeved on the rotary drilling rod; a drill tooth device in an avoidance working state and a hole expansion working state is installed between the lower annular plate and the upper annular plate; When the upper annular plate is close to the lower annular plate, the tooth drilling device is in the avoidance working state; When the upper annular plate is away from the lower annular plate, the drilling device is in the hole expanding working state.
8. The expansion drilling method according to claim 7, wherein: The outer walls of the upper annular plate and the lower annular plate are both rotatably connected with universal balls, and a plurality of telescopic driving members are connected between the upper annular plate and the lower annular plate.
9. The expansion drilling method according to claim 8, wherein: The tooth drilling device includes: a hinged rod hingedly connected between the upper circular plate and the lower circular plate, and a positioning plate connected to the hinged end of the hinged rod; wherein the positioning plate is equipped with scraping teeth.
10. The expansion drilling method according to claim 9, wherein: The cuttings barrel is equipped with a first position sensor, and the positioning plate is equipped with a second position sensor.