Miniature steel pipe pile net structure for karst area tunnel cavity base

Abstract

The utility model relates to the technical field of roadbed engineering, in particular to a miniature steel pipe pile net structure for a karst area tunnel cavity base, which comprises a miniature steel pipe pile, a fixing ring, a butt joint plate, an abutting mechanism and a limiting mechanism, the fixing ring is sleeved outside the miniature steel pipe pile, and the butt joint plate is fixed on the outer wall of the fixing ring; the fixing rings arranged on every two adjacent miniature steel pipe piles are connected and locked through the butt joint plates, the abutting mechanisms used for connecting and locking the fixing rings and the miniature steel pipe piles are arranged on the fixing rings, the limiting mechanisms are arranged between the fixing rings and the linkage rings, and the fixing rings and the miniature steel pipe piles can be rapidly locked through the abutting mechanisms; the fixing rings of every two adjacent miniature steel pipe piles can also be quickly connected and locked through the arrangement of structures such as the butt joint plates, the fixing rings are combined to form a unified whole, the structure is simple and efficient, the linkage rings are locked through the limiting mechanisms by means of the arrangement of the limiting mechanisms, the linkage rings are prevented from rotating reversely, and then the butt joint plates can be firmly connected with the miniature steel pipe piles in a butt joint mode.

Description

Technical Field

[0001] The present application relates to the technical field of roadbed engineering, and in particular to a micro steel pipe pile-net structure used for the base of a tunnel cavity in a karst area. Background Art

[0002] The newly built Xiangyang-Jingmen high-speed railway is an important part of the Hohhot-Nanning trunk line of the "eight vertical and eight horizontal" high-speed railway network in my country's 13th Five-Year Plan. The line is connected to the Zhengzhou-Chongqing High-speed Railway and the Wuhan-Shiyan High-speed Railway in the north, and the Wuhan-Yichang section of the Yangtze River High-speed Railway under construction and the Jingmen-Jingzhou High-speed Railway in the south. The line is drawn from Xiangyang East Station and goes south through Yicheng to Jingmen West Station of the Shanghai-Chongqing-Chengdu Yangtze River High-speed Railway. The new line is 116.23 kilometers long and has four stations along the line: Xiangyang East, Yicheng North, Shuanghe West, and Jingmen West, as well as two stations: Qiangang and Guolou. The line station, among which Xiangyang East is an existing station, Yicheng North and Shuanghe West (passenger transport conditions reserved) are newly built stations, and Jingmen West is a station under construction. The new Xiangyang to Jingmen High-speed Railway XJZQ-4 section starts from the Xiangyang stage of Pengjiawan Bridge to the Jingmen stage end of the Xiangjing left line crossing the G347 National Highway Super Bridge, with a total length of 29.11 kilometers (DK87+960.7~DK117+070.38, including a broken chain length of 144.62m). The main engineering contents include: 4.02 kilometers of roadbed engineering.

[0003] It is crucial to ensure that karst exploration tasks are completed in quality and quantity, and that the exploration data is objective, reliable and effective, so as to efficiently complete the exploration tasks entrusted by customers. Through further exploration of the cover layer and rock layer within the scope of roadbed remediation in karst areas, it is crucial to fully understand and grasp the degree of development of the underlying karst and the spatial distribution of karst in the area, and provide sufficient and accurate exploration data for the subsequent design of karst grouting or other remediation plans.

[0004] In the related art, in order to ensure the stability and reliability of the base of the tunnel cavity in the karst area, it is generally necessary to set up micro steel pipe piles in the roadbed, and form a pile network structure through the steel pipe piles. After the steel pipe piles are fixed, it is necessary to use connecting parts to combine the two adjacent steel pipe piles so that the overall combination forms a unified structure. However, most of the current connecting parts use a fixed sleeve that is sleeved on the outside of the steel pipe pile, and the two adjacent fixed sleeves are connected by a steel plate. In order to facilitate the docking of the fixed sleeve and the steel pipe pile, the inner hole diameter of the fixed sleeve is often larger than the steel pipe pile. Therefore, it is also necessary to use screws and other components to fix the fixed sleeve and the steel pipe pile, and multiple screws are needed to lock a fixed sleeve and a steel pipe pile. The operation is cumbersome and time-consuming and labor-intensive, which seriously affects work efficiency. Utility Model Content

[0005] In order to solve the problem that the current micro steel pipe piles require a lot of manpower and material resources when being assembled and connected, which seriously affects work efficiency, the present application provides a micro steel pipe pile network structure for the base of a tunnel cavity in a karst area.

[0006] The micro steel pipe pile-net structure for the base of the tunnel cavity in karst areas provided in this application adopts the following technical solutions:

[0007] The micro steel pipe pile-net structure used for the base of the tunnel cavity in karst areas includes:

[0008] Micro steel pipe piles, each micro steel pipe pile having a fixing ring sleeved on its outer surface, a docking plate fixed to the outer wall of the fixing ring, and the fixing rings provided on two adjacent micro steel pipe piles being connected and locked by the docking plate;

[0009] an abutment mechanism for connecting and locking the fixing ring and the micro-steel pipe pile, the abutment mechanism being provided on the fixing ring and comprising a transmission bearing, a linkage ring, an adjustment plate, and an abutment plate, the transmission bearing being provided on the fixing ring, the linkage ring being coaxially fixed to the outside of the transmission bearing, and the linkage ring being rotatably connected to the fixing ring via the transmission bearing, one end of the adjustment plate being rotatably connected to the outer wall of the linkage ring, and the other end being rotatably connected to the abutment plate;

[0010] A limiting mechanism is used to lock the linkage ring, and the limiting mechanism is arranged between the fixing ring and the linkage ring.

[0011] By adopting the above technical solution and utilizing the setting of the abutment mechanism, the rotation of the linkage ring drives the adjustment plate to be linked, thereby causing the abutment plate to rotate around the fixing ring and abut against the micro steel pipe pile, thereby enabling the fixing ring and the micro steel pipe pile to be quickly locked. Moreover, when the fixing ring and the micro steel pipe pile are locked, the force can be evenly distributed and the piles can be located on the same axis, thereby further improving the overall stability of the steel pipe pile network. Moreover, by providing structures such as the docking plate, the fixing rings of two adjacent micro steel pipe piles can also be quickly connected and locked, and combined to form a unified whole, which is simple and efficient.

[0012] By utilizing the setting of the limiting mechanism, the linkage ring is locked through the limiting mechanism to prevent the linkage ring from reversing, thereby enabling the abutment plate to firmly abut against the micro steel pipe pile to avoid loosening.

[0013] Optionally, there are two adjustment plates rotatably connected to the linkage ring and symmetrically arranged, and both ends of the abutment plate are rotatably connected to the adjustment plate between two adjacent linkage rings, and multiple abutment plates are equidistantly arranged, and multiple abutment plates are combined together to form a circular ring structure.

[0014] By adopting the above technical solution, a plurality of abutment plates are used to ensure that the periphery of the fixing ring can be uniformly stressed when the fixing ring is locked with the micro steel pipe pile.

[0015] Optionally, the outer wall of the linkage ring has a polygonal structure.

[0016] By adopting the above technical solution and utilizing the polygonal structure, workers can rotate the linkage ring through external tools.

[0017] Optionally, the limiting mechanism includes a ratchet and a pawl, the ratchet is fixed on the fixing ring, a notch is provided at the axis of the linkage ring, one end of the pawl is rotatably connected to the inner wall of the notch of the linkage ring, and the other end is slidably abutted against the ratchet.

[0018] By adopting the above technical solution, the ratchet and the pawl are used to limit the linkage ring, thereby preventing the linkage ring from reversing and causing the abutment plate to loosen.

[0019] Optionally, a leaf spring is provided at the connecting end between the pawl and the linkage ring, one end of the leaf spring abuts against the inner wall of the linkage ring notch, and the other end abuts against the pawl.

[0020] By adopting the above technical solution, the elastic force of the leaf spring is utilized to enable the pawl to firmly contact the ratchet wheel.

[0021] Optionally, through holes are provided at both ends of the docking plate, and threaded rods are provided in the through holes, and nuts are screwed and connected at both ends of the threaded rods.

[0022] By adopting the above technical solution, two adjacent butt joint plates can be quickly connected and locked by using threaded rods and nuts.

[0023] Optionally, one end of the threaded rod is screwed with at least two nuts, and a pressure gasket is sleeved on the threaded rod, and the pressure gasket is located between two adjacent nuts.

[0024] By adopting the above technical solution, the pressurized gasket is used to prevent the nut from loosening.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] By utilizing the setting of the abutment mechanism, the rotation of the linkage ring drives the adjustment plate to be linked, so that the abutment plate rotates around the fixed ring and abuts with the micro steel pipe pile, so that the fixed ring and the micro steel pipe pile can be quickly locked, and the fixed ring and the micro steel pipe pile can be evenly stressed when locked and located on the same axis, further improving the overall stability of the steel pipe pile network, and through the setting of structures such as the docking plate, the fixing rings of two adjacent micro steel pipe piles can also be quickly connected and locked, and combined to form a unified whole, which is simple and efficient; by utilizing the setting of the limiting mechanism, the linkage ring is locked through the limiting mechanism to prevent the linkage ring from reversing, so that the abutment plate can firmly abut against the micro steel pipe pile to prevent loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the external structure of the micro steel pipe pile network structure used for the base of the tunnel cavity in the karst area in this embodiment.

[0028] Figure 2 Schematic diagram of the fixing ring and its overall connection structure in this embodiment.

[0029] Figure 3 Schematic diagram of the abutment mechanism structure in this embodiment.

[0030] Figure 4 Schematic diagram of the limiting mechanism structure in this embodiment.

[0031] Figure 5 Schematic diagram of the connection structure of the butt joint plate in this embodiment.

[0032] Description of reference numerals:

[0033] 1. Micro steel pipe pile; 2. Fixing ring; 3. Docking plate; 4. Abutment mechanism; 41. Transmission bearing; 42. Linkage ring; 43. Adjustment plate; 44. Abutment plate; 5. Limiting mechanism; 51. Ratchet; 52. Pawl; 53. Leaf spring; 6. Threaded rod; 7. Nut; 8. Pressure gasket. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The embodiments of the present application disclose a micro steel pipe pile-net structure for use in the base of a tunnel cavity in a karst area.

[0036] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 cannot be understood as a limitation on the present invention.

[0037] Reference Figure 1 and Figure 2 , a micro steel pipe pile net structure used for the base of the tunnel cavity in karst areas, includes a micro steel pipe pile 1, a fixing ring 2, a docking plate 3, an abutment mechanism 4 and a limiting mechanism 5. The outer sleeve of the micro steel pipe pile 1 is provided with a fixing ring 2, and a docking plate 3 is fixed on the outer wall of the fixing ring 2. The fixing rings 2 set on two adjacent micro steel pipe piles 1 are connected and locked through the docking plate 3. The abutment mechanism 4 for connecting and locking the fixing ring 2 with the micro steel pipe pile 1 is set on the fixing ring 2, and the limiting mechanism 5 is set between the fixing ring 2 and the linkage ring 42. The abutment mechanism 4 is used to quickly lock the fixing ring 2 and the micro steel pipe pile 1, and the setting of the docking plate 3 and other structures makes it possible for the fixing rings 2 of the two adjacent micro steel pipe piles 1 to be quickly connected and locked, and combined to form a unified whole, which is simple and efficient.

[0038] Reference Figure 3 Specifically, the abutment mechanism 4 includes a transmission bearing 41, a linkage ring 42, an adjustment plate 43 and an abutment plate 44. By utilizing the setting of the abutment mechanism 4, the rotation of the linkage ring 42 drives the adjustment plate 43 to be linked, so that the abutment plate 44 rotates around the fixing ring 2 and abuts with the micro steel pipe pile 1, so that the fixing ring 2 and the micro steel pipe pile 1 can be quickly locked, and the fixing ring 2 and the micro steel pipe pile 1 can be evenly stressed when locked and located on the same axis, further improving the overall stability of the steel pipe pile network, and through the setting of structures such as the docking plate 3, the fixing rings 2 of two adjacent micro steel pipe piles 1 can also be quickly connected and locked, and combined to form a unified whole, which is simple and efficient.

[0039] The transmission bearing 41 is arranged on the fixed ring 2, the linkage ring 42 is coaxially fixed on the outside of the transmission bearing 41, and the linkage ring 42 is rotatably connected to the fixed ring 2 through the transmission bearing 41. One end of the adjustment plate 43 is rotatably connected to the outer wall of the linkage ring 42, and the other end is rotatably connected to the abutment plate 44.

[0040] Specifically, there are two adjusting plates 43 rotatably connected to the linkage ring 42 and symmetrically arranged, and the two ends of the abutment plate 44 are rotatably connected to the adjusting plate 43 between the two adjacent linkage rings 42, and multiple abutment plates 44 are equidistantly arranged, and the multiple abutment plates 44 are combined to form a circular ring structure, and the outer wall of the linkage ring 42 is a polygonal structure. The multiple abutment plates 44 are used to ensure that the periphery of the fixing ring 2 can be evenly stressed when locked with the micro steel pipe pile 1, and the polygonal structure is used to enable the staff to rotate the linkage ring 42 through external tools.

[0041] Reference Figure 4 Specifically, in the embodiment of the present application, regarding the limiting mechanism 5, the limiting mechanism 5 includes a ratchet 51, a pawl 52 and a leaf spring 53. By utilizing the setting of the limiting mechanism 5, the linkage ring 42 is locked through the limiting mechanism 5 to prevent the linkage ring 42 from reversing, thereby enabling the abutment plate 44 to firmly abut against the micro steel pipe pile 1 to prevent loosening.

[0042] In the embodiment of the present application, the ratchet 51 is fixed on the fixed ring 2, and a notch is provided at the axis center of the linkage ring 42. One end of the pawl 52 is rotatably connected to the inner wall of the notch of the linkage ring 42, and the other end is slidingly abutted against the ratchet 51. A leaf spring 53 is provided at the connecting end of the pawl 52 and the linkage ring 42, and one end of the leaf spring 53 abuts against the inner wall of the notch of the linkage ring 42, and the other end abuts against the pawl 52.

[0043] Reference Figure 5 , through holes are provided at both ends of the docking plate 3, and threaded rods 6 are provided in the through holes, nuts 7 are screwed together at both ends of the threaded rod 6, at least two nuts 7 are screwed together at one end of the threaded rod 6, and a pressure gasket 8 is sleeved on the threaded rod 6, and the pressure gasket 8 is located between two adjacent nuts 7. The threaded rod 6 and the nuts 7 are used to quickly connect and lock the two adjacent docking plates 3, and the pressure gasket 8 is used to prevent the nuts 7 from loosening.

[0044] The implementation principle of the micro steel pipe pile network structure for the base of the tunnel cavity in the karst area in the embodiment of the present application is: first, the fixing ring 2 is put on the micro steel pipe pile 1 and moved to the specified position, and then the linkage ring 42 is rotated, and the adjustment plate 43 is driven to be linked by the rotation of the linkage ring 42, so that the abutment plate 44 rotates around the fixing ring 2 and abuts against the micro steel pipe pile 1, thereby locking the fixing ring 2 and the micro steel pipe pile 1, and then the docking plates 3 on the two adjacent fixing rings 2 are connected and locked by the threaded rod 6 and the nut 7.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A micro steel pipe pile-net structure for the base of a tunnel cavity in a karst area, characterized in that: include: A micro steel pipe pile (1), wherein a fixing ring (2) is provided on the outside of the micro steel pipe pile (1), a docking plate (3) is fixed on the outer wall of the fixing ring (2), and the fixing rings (2) provided on two adjacent micro steel pipe piles (1) are connected and locked via the docking plate (3); an abutment mechanism (4) for connecting and locking the fixing ring (2) and the micro steel pipe pile (1); the abutment mechanism (4) is arranged on the fixing ring (2), and the abutment mechanism (4) comprises a transmission bearing (41), a linkage ring (42), an adjustment plate (43) and an abutment plate (44); the transmission bearing (41) is arranged on the fixing ring (2); the linkage ring (42) is coaxially fixed to the outside of the transmission bearing (41), and the linkage ring (42) is rotatably connected to the fixing ring (2) through the transmission bearing (41); one end of the adjustment plate (43) is rotatably connected to the outer wall of the linkage ring (42), and the other end is rotatably connected to the abutment plate (44); A limiting mechanism (5) is used to lock the linkage ring (42), and the limiting mechanism (5) is arranged between the fixing ring (2) and the linkage ring (42).

2. The micro steel pipe pile-net structure for the base of a tunnel cavity in a karst area according to claim 1 is characterized in that: Two adjusting plates (43) are rotatably connected to the linkage ring (42) and are symmetrically arranged, and both ends of the abutment plate (44) are rotatably connected to the adjusting plate (43) between two adjacent linkage rings (42), and a plurality of abutment plates (44) are equidistantly arranged, and the plurality of abutment plates (44) are combined together to form a circular ring structure.

3. The micro steel pipe pile-net structure for the base of a tunnel cavity in a karst area according to claim 1 is characterized in that: The outer wall of the linkage ring (42) has a polygonal structure.

4. The micro steel pipe pile-net structure for the base of a tunnel cavity in a karst area according to claim 1 is characterized in that: The limiting mechanism (5) comprises a ratchet (51) and a pawl (52); the ratchet (51) is fixed to the fixing ring (2); a notch is provided at the axis of the linkage ring (42); one end of the pawl (52) is rotatably connected to the inner wall of the notch of the linkage ring (42), and the other end is in sliding contact with the ratchet (51).

5. The micro steel pipe pile-net structure for the base of a tunnel cavity in a karst area according to claim 4 is characterized in that: A leaf spring (53) is provided at the connection end between the pawl (52) and the linkage ring (42); one end of the leaf spring (53) abuts against the inner wall of the notch of the linkage ring (42), and the other end abuts against the pawl (52).

6. The micro steel pipe pile-net structure for the base of a tunnel cavity in a karst area according to claim 1 is characterized in that: Through holes are provided at both ends of the docking plate (3), and threaded rods (6) are provided in the through holes. Nuts (7) are screwed and connected at both ends of the threaded rod (6).

7. The micro steel pipe pile-net structure for the base of a tunnel cavity in a karst area according to claim 6 is characterized in that: One end of the threaded rod (6) is screwed with at least two nuts (7), and a pressure gasket (8) is sleeved on the threaded rod (6), and the pressure gasket (8) is located between two adjacent nuts (7).

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