Tunnel drainage pipe fixing device

Abstract

The utility model discloses a tunnel drainage pipe fixing device. The tunnel drainage pipe fixing device comprises a waterproof plate and a low side wall concrete ground. The waterproof plate is connected with the low side wall concrete ground, the waterproof plate and the low side wall concrete ground form an L-shaped bearing interface, and the joint of the waterproof plate and the low side wall concrete ground forms an included angle. The first fixing structure is mounted on the low side wall concrete ground; the first mounting structure is mounted on the first fixing structure; the adjusting structure is mounted on the first mounting structure; the second mounting structure is mounted on the adjusting structure; the second fixing structure is mounted on the second mounting structure; the waterproof structure is mounted on the second fixing structure; the utility model relates to the field of tunnel drainage pipe fixing, prevents hidden dangers caused by tunnel drainage, and is relatively simple in structure and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of tunnel drainage pipe fixing, specifically a tunnel drainage pipe fixing device. Background Technology

[0002] Tunnel drainage pipes generally include circumferential drainage pipes, longitudinal drainage pipes, and transverse drainage pipes. These three are connected by reducing tees to form a complete drainage system. Among them, the longitudinal drainage pipe is an intermediate link in the entire tunnel drainage system, playing a connecting role and is a key link. The longitudinal drainage pipe refers to the drainage pipe laid along the corners of the side walls on both sides of the tunnel after the initial support is completed and before the composite waterproof membrane is laid.

[0003] In tunnel construction, the stability of the drainage system is related to the long-term safety and seepage prevention performance of the tunnel structure. As the core component of the drainage system, the drainage pipe needs to be reliably installed on the tunnel sidewall or bottom through fixing devices.

[0004] During the secondary lining concrete pouring process, external forces such as concrete flow impact, vibration load, and formwork compression can easily cause longitudinal drainage pipes to shift or float upwards. According to statistics, cases with construction errors exceeding ±20mm account for 35%, leading to changes in the drainage pipe slope, local back slope, and even disconnection of T-junctions. This results in problems such as poor system drainage and water pressure accumulation behind the lining. Currently, the common methods of fixing are wire binding, simple U-shaped clips, or expansion bolts. The fixing points only provide vertical constraints and cannot resist the buoyancy and lateral extrusion forces during concrete pouring, causing the pipe to float and shift upwards. After pre-embedding, it is impossible to perform secondary calibration of the pipe height and level. The cumulative deviation affects drainage efficiency. Therefore, it is necessary to design a tunnel drainage pipe fixing device to solve this problem. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a tunnel drainage pipe fixing device, which solves the problem that during the secondary lining concrete pouring process, the longitudinal drainage pipe may become misaligned and float upwards, leading to pre-embedded misalignment of the drainage pipe and poor drainage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tunnel drainage pipe fixing device, comprising:

[0007] Waterproofing membrane and low sidewall concrete floor;

[0008] The waterproof membrane is connected to the concrete floor of the low side wall, and the waterproof membrane and the concrete floor of the low side wall form an L-shaped load-bearing interface. The joint between the waterproof membrane and the concrete floor of the low side wall forms an angle of 10 degrees.

[0009] Also includes:

[0010] A first fixed structure installed on the concrete ground of the low side wall, a first mounting structure installed on the first fixed structure, an adjustment structure installed on the first mounting structure, a second mounting structure installed on the adjustment structure, a second fixed structure installed on the second mounting structure, and a waterproof structure installed on the second fixed structure.

[0011] The first fixing structure is used to fix the drainage pipe fixing device on the concrete ground of the low side wall. The first fixing structure is used to resist vertical loads. The second fixing structure is used to decompose lateral forces and form a force couple balance with the first fixing structure. The adjustment structure, together with the first installation structure and the second installation structure, constitutes an adjustment system to realize the vertical height adjustment of the first installation structure and the second installation structure and to fix the drainage pipe.

[0012] Preferably, the first fixing structure includes: a first fixing plate, a pair of first fixing screws, and a first fixing support column;

[0013] The first fixing plate is provided with a pair of first screw holes, and each first fixing screw is movably installed in the corresponding first screw hole. The first fixing plate is connected to the concrete ground of the low side wall through a pair of first fixing screws, and the first fixing support column is installed on the upper surface of the first fixing plate.

[0014] Preferably, the first mounting structure includes: a first arc-shaped mounting plate;

[0015] The first arc-shaped mounting plate is installed on the upper surface of the first fixed support column.

[0016] Preferably, the adjustment structure includes: a pair of first adjustment blocks, a pair of second adjustment blocks, and a pair of adjustment bolts;

[0017] A pair of first adjusting blocks are mounted on a first arc-shaped mounting plate, each adjusting bolt is movably mounted on a corresponding first adjusting block, and each second adjusting block is movably mounted on a corresponding adjusting bolt.

[0018] Preferably, the second mounting structure includes: a second arc-shaped mounting plate;

[0019] The second arc-shaped mounting plate is mounted on a pair of second adjustment blocks.

[0020] Preferably, the second fixing structure includes: a second fixing support column, a second fixing plate, and a pair of second fixing screws;

[0021] The second fixed support column is installed on the second arc-shaped mounting plate, and the second fixed plate is installed at one end of the second fixed support column. The second fixed plate is provided with a pair of second screw holes, and each second fixed screw is movably installed in the corresponding second screw hole. The second fixed plate is connected to the waterproof plate through a pair of second fixed screws.

[0022] Preferably, the waterproof structure includes: a pair of first hot melt gaskets and a pair of second hot melt gaskets;

[0023] Each of the first hot melt pads is fitted onto the corresponding first fixing screw, and each of the second hot melt pads is fitted onto the corresponding second fixing screw. Beneficial effects

[0024] This utility model provides a tunnel drainage pipe fixing device. It has the following advantages: This tunnel drainage pipe fixing device improves construction quality, is very convenient, reduces unnecessary trouble, effectively controls the floating of the drainage pipe during the secondary lining concrete pouring process, ensures smooth tunnel drainage, is easy to operate on-site, convenient to construct, and has controllable quality. It prevents potential hazards caused by tunnel drainage problems. The first fixing structure and the second fixing structure form a two-way mechanical constraint. The first fixing structure resists vertical loads (such as concrete buoyancy), and the second fixing structure forms a couple effect through the rigid connection with the L-shaped bearing interface via lateral force decomposition, offsetting the dynamic load during construction. The first fixing screw and the second fixing screw are respectively embedded in the low sidewall concrete and the waterproofing membrane. This design forms a dual-interface anchoring system, preventing substrate cracking caused by single-point stress concentration. The adjustment structure drives the second adjustment block to move vertically by rotating the adjustment bolt, which in turn raises and lowers the second arc-shaped mounting plate, achieving stepless adjustment of the drainage pipe height (adjustment accuracy ±1mm). This adapts to construction errors and pipe diameter differences. The first and second arc-shaped mounting plates form a wrapping clamping surface, which adapts to the pipe curvature through its arc curvature, preventing local compression deformation. The first and second hot-melt gaskets are hot-melted after the fixing screws are installed, completely filling the gap between the screw holes and the substrate, forming a physical-chemical composite sealing layer that blocks the seepage path. The structure is relatively simple and easy to use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a tunnel drainage pipe fixing device according to the present invention.

[0026] Figure 2 This is a front view structural diagram of a tunnel drainage pipe fixing device according to the present invention.

[0027] Figure 3 This is a front view of the tunnel drainage pipe fixing device described in this utility model.

[0028] Figure 4This is a top view of the tunnel drainage pipe fixing device described in this utility model.

[0029] In the picture:

[0030] Waterproof membrane 10, low side wall concrete floor 20, first fixing structure 30, first installation structure 40, adjustment structure 50, second installation structure 60, second fixing structure 70, waterproof structure 80;

[0031] First fixing plate 31, first fixing screw 32, first fixing support column 33;

[0032] First arc-shaped mounting plate 41;

[0033] First adjusting block 51, second adjusting block 52, adjusting bolt 53;

[0034] Second arc-shaped mounting plate 61;

[0035] Second fixed support column 71, second fixed plate 72, second fixed screw 73;

[0036] First hot melt gasket 81, second hot melt gasket 82. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Please see Figure 1-4This utility model provides a technical solution: a tunnel drainage pipe fixing device, comprising: a waterproof membrane 10 and a low sidewall concrete ground 20, wherein the waterproof membrane 10 and the low sidewall concrete ground 20 are connected, forming an L-shaped load-bearing interface, and the joint between the waterproof membrane 10 and the low sidewall concrete ground 20 forms a 90-degree angle; and further comprising: a first fixing structure 30 installed on the low sidewall concrete ground 20, a first mounting structure 40 installed on the first fixing structure 30, an adjustment structure 50 installed on the first mounting structure 40, and a second fixing structure 50 installed on the adjustment structure 50. The system comprises an installation structure 60, a second fixing structure 70 installed on the second installation structure 60, and a waterproof structure 80 installed on the second fixing structure 70. The first fixing structure 30 is used to fix the drainage pipe fixing device to the concrete ground 20 of the low side wall. The first fixing structure 30 is used to resist vertical loads. The second fixing structure 70 is used to decompose lateral forces and form a force couple balance with the first fixing structure 30. The adjustment structure 50, together with the first installation structure 40 and the second installation structure 60, constitutes an adjustment system to realize the vertical height adjustment of the first installation structure 40 and the second installation structure 60 and to fix the drainage pipe.

[0039] The first fixing structure 30 includes: a first fixing plate 31, a pair of first fixing screws 32 and a first fixing support column 33. The first fixing plate 31 is provided with a pair of first screw holes, and each first fixing screw 32 is movably installed on the corresponding first screw hole. The first fixing plate 31 is connected to the low side wall concrete ground 20 through a pair of first fixing screws 32. The first fixing support column 33 is installed on the upper surface of the first fixing plate 31.

[0040] The first fixing plate 31 is fixed in the first preset position by the first fixing screw 32. The first fixing support column 33 is used to support the first arc-shaped mounting plate 41. The first fixing support column 33 is made of φ22mm stainless steel round steel and is welded to the first fixing plate 31 by TIG welding. The weld height is ≥4mm.

[0041] The first mounting structure 40 includes a first arc-shaped mounting plate 41, which is mounted on the upper surface of the first fixed support column 33.

[0042] The first arc-shaped mounting plate 41 on the upper surface of the first fixed support column 33 is used to support the installation of the drain pipe, and together with the adjustment structure 50 and the second mounting structure 60, the drain pipe is fixedly installed here.

[0043] The adjustment structure 50 includes: a pair of first adjustment blocks 51, a pair of second adjustment blocks 52, and a pair of adjustment bolts 53. The pair of first adjustment blocks 51 are mounted on the first arc-shaped mounting plate 41, each adjustment bolt 53 is movably mounted on the corresponding first adjustment block 51, and each second adjustment block 52 is movably mounted on the corresponding adjustment bolt 53.

[0044] The drainage pipe can be fixed by adjusting the adjusting bolt 53 according to the diameter of the laid drainage pipe. The first arc-shaped mounting plate 41 on the first adjusting block 51 and the second arc-shaped mounting plate 61 on the second adjusting block 52 fix the drainage pipe. The adjusting bolt 53 is an M12×1.5 fine-thread stainless steel bolt, which is lubricated with molybdenum disulfide before installation.

[0045] The second mounting structure 60 includes a second arc-shaped mounting plate 61, which is mounted on a pair of second adjusting blocks 52.

[0046] The second arc-shaped mounting plate 61 is used in conjunction with the first arc-shaped mounting plate 41 to install and fix the drain pipe.

[0047] The second fixing structure 70 includes: a second fixing support column 71, a second fixing plate 72, and a pair of second fixing screws 73. The second fixing support column 71 is installed on the second arc-shaped mounting plate 61, and the second fixing plate 72 is installed at one end of the second fixing support column 71. The second fixing plate 72 is provided with a pair of second screw holes, and each second fixing screw 73 is movably installed at the corresponding second screw hole. The second fixing plate 72 is connected to the waterproof plate 10 through a pair of second fixing screws 73.

[0048] The second fixing plate 72 is fixed in position by the second fixing screw 73 on the second fixing plate 72, thereby preventing the drainage pipe from floating during the secondary lining concrete pouring process. The second fixing screw 73 is an M8×75 stainless steel self-tapping screw. The second fixing support column 71 and the second fixing plate 72 are connected by a flange.

[0049] The waterproof structure 80 includes a pair of first hot melt gaskets 81 and a pair of second hot melt gaskets 82, each first hot melt gasket 81 being fitted onto a corresponding first fixing screw 32, and each second hot melt gasket 82 being fitted onto a corresponding second fixing screw 73.

[0050] The first hot melt gasket 81 and the second hot melt gasket 82 prevent water leakage at the first fixing screw 32 and the second fixing screw 73. The first hot melt gasket 81 and the second hot melt gasket 82 are modified PE rings with a diameter of 30 mm and a thickness of 5 mm.

[0051] Use a high-pressure water gun (pressure ≥15MPa) to rinse the joint between the low side wall floor 20 and the waterproof membrane 10 to remove laitance and dirt; wipe local oil stains with acetone to ensure the base surface reaches Sa2.5 cleanliness. Using the tunnel centerline as a reference, use a total station to measure the longitudinal drainage pipe centerline every 5m and mark it with an ink line. Mark the installation center point of the first fixed structure 30 every 1.2m along the ink line (lateral allowable deviation ±3mm). Simultaneously mark the vertical projection point of the second fixed structure 70 at the corresponding position on the waterproof membrane 10 (calibrated with a laser line projector, verticality error ≤1°). Use a HiltiTE... A 70 electric hammer with a φ12mm alloy drill bit was used to drill an anchor hole 65mm deep and 14mm in diameter at the 20th calibration point on the low side wall. The hole axis was perpendicular to the base surface (the deviation was controlled by the inclination meter to be ≤0.5°). Hilti HY150 epoxy anchoring adhesive was used. The injection gun was used to inject adhesive at a uniform speed from the bottom of the hole, with a filling rate ≥90%. The first fixing screw 32 was inserted and tightened twice with a torque wrench (30 N·m initially, and 45 N·m after 24 hours). The pull-out force after anchoring was ≥25kN. A special hole opener (with a depth limit baffle) was used to drill a φ8.5m hole at the (10) calibration point on the waterproof board. To avoid damaging the geotextile behind the hole, insert the second fixing screw 73. Set the drill torque to 8 N·m. Install an EPDM sealing ring (Shore hardness 60±5) at the screw tail. The second fixing support column 71 and the second fixing plate 72 are connected by a flange. Verify the horizontal height difference between the second and first support columns 33 using a laser level (≤1 mm). Rotate the adjusting bolt 53 to drive the second adjusting block 52 up and down along the guide groove. Two people operate the bolts on both sides, rotating synchronously according to the principle of "same direction and equal amount" to prevent the second arc-shaped mounting plate 61 from tilting. Hoist the longitudinal drainage pipe (HDPE, DN200) to the first arc... Between mounting plate 41 and the second arc-shaped mounting plate 61, the gap between the bottom of the longitudinal drain pipe and the first arc-shaped plate 41 is filled with a 3mm thick neoprene rubber gasket. Then, the adjusting bolt 53 is tightened in three stages: primary stage: manually tighten until the pipe body is slightly deformed; intermediate stage: increase the torque wrench to 10 N·m; final stage: final torque of 15 N·m, with uniform radial pressure on the pipe body. Finally, by using a temperature-controlled hot air gun (LeisterTRIACS), the first hot melt gasket 81 and the second hot melt gasket 82 are heated in a uniform circumferential direction for 30 seconds, followed by pressing for 5 seconds. After cooling, a non-porous sealing ring is formed.

[0052] The applicant conducted experiments using this device, fixing a 1.2km longitudinal drainage pipe. The monitoring data during the construction period are as follows: Pipe installation elevation deviation: maximum +2.1mm, minimum -1.8mm (100% pass rate); pipe floating amount after secondary lining pouring: 0.3-0.8mm (far below the standard allowable 5mm); no leakage in the hot-melt sealing zone after holding pressure at 0.6MPa water pressure for 2 hours, far exceeding the design requirement of 0.3MPa.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel drainage pipe fixing device, comprising: Waterproof membrane (10) and low side wall concrete floor (20); The waterproof membrane (10) is connected to the concrete floor (20) of the low side wall. The waterproof membrane (10) and the concrete floor (20) of the low side wall form an L-shaped bearing interface. The joint between the waterproof membrane (10) and the concrete floor (20) of the low side wall forms a 90-degree angle. Its characteristic is that it further includes: The first fixed structure (30) installed on the concrete floor (20) of the low side wall, the first mounting structure (40) installed on the first fixed structure (30), the adjustment structure (50) installed on the first mounting structure (40), the second mounting structure (60) installed on the adjustment structure (50), the second fixed structure (70) installed on the second mounting structure (60), and the waterproof structure (80) installed on the second fixed structure (70); The first fixing structure (30) is used to fix the drainage pipe fixing device on the concrete ground (20) of the low side wall. The first fixing structure (30) is used to resist the vertical load. The second fixing structure (70) is used to decompose the lateral force and form a force couple balance with the first fixing structure (30). The adjustment structure (50), together with the first installation structure (40) and the second installation structure (60), constitute an adjustment system to realize the vertical height adjustment of the first installation structure (40) and the second installation structure (60) and fix the drainage pipe.

2. A tunnel drain fixing device according to claim 1, wherein The first fixing structure (30) includes: a first fixing plate (31), a pair of first fixing screws (32) and a first fixing support column (33); The first fixing plate (31) is provided with a pair of first screw holes, and each first fixing screw (32) is movably installed on the corresponding first screw hole. The first fixing plate (31) is connected to the low side wall concrete floor (20) through a pair of first fixing screws (32). The first fixing support column (33) is installed on the upper surface of the first fixing plate (31).

3. The tunnel drainage pipe fixing device according to claim 2, characterized in that, The first mounting structure (40) includes: a first arc-shaped mounting plate (41); The first arc-shaped mounting plate (41) is mounted on the upper surface of the first fixed support column (33).

4. A tunnel drain fixing device according to claim 3, wherein The adjustment structure (50) includes: a pair of first adjustment blocks (51), a pair of second adjustment blocks (52), and a pair of adjustment bolts (53); A pair of first adjustment blocks (51) are mounted on a first arc-shaped mounting plate (41), each of the adjustment bolts (53) is movably mounted on the corresponding first adjustment block (51), and each of the second adjustment blocks (52) is movably mounted on the corresponding adjustment bolt (53).

5. A tunnel drain fixing device according to claim 4, wherein The second mounting structure (60) includes: a second arc-shaped mounting plate (61); The second arc-shaped mounting plate (61) is mounted on a pair of second adjustment blocks (52).

6. A tunnel drain fixture according to claim 5, wherein The second fixing structure (70) includes: a second fixing support column (71), a second fixing plate (72), and a pair of second fixing screws (73); The second fixed support column (71) is installed on the second arc-shaped mounting plate (61), and the second fixed plate (72) is installed on one end of the second fixed support column (71). The second fixed plate (72) is provided with a pair of second screw holes, and each second fixed screw (73) is movably installed at the corresponding second screw hole. The second fixed plate (72) is connected to the waterproof plate (10) through a pair of second fixed screws (73).

7. A tunnel drain fixing device according to claim 6, wherein The waterproof structure (80) includes: a pair of first hot melt gaskets (81) and a pair of second hot melt gaskets (82); Each of the first hot melt pads (81) is fitted onto the corresponding first fixing screw (32), and each of the second hot melt pads (82) is fitted onto the corresponding second fixing screw (73).

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