Tunnel invert buried waterstop end positioning tool and tunnel invert waterproof device
By using a combination of clamps and rigid connectors to fix the waterstop, the problems of welding damage and waterstop position control were solved, achieving stable installation and efficient disassembly of the waterstop, thus improving the tunnel waterproofing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD ENG OF CHINA RAILWAY 12TH BUREAU GROUP
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-12
AI Technical Summary
In existing technologies, welding of embedded waterstops can easily burn the waterstops, and the alignment and elevation of the waterstops are not well controlled after the invert arch is constructed, which affects the waterproofing effect.
The ends of the waterstop are held by clamps I and II, and fixed to the initial support of the tunnel by rigid connectors and turnbuckles. The position and tightness of the waterstop are adjusted by the combination of rigid fixing rods and turnbuckles to avoid welding damage and ensure the alignment and elevation of the waterstop.
It effectively avoids welding damage, ensures the alignment and elevation control of the waterstop, achieves stable fixing of the waterstop, is easy to install and disassemble, and has a high turnover rate.
Smart Images
Figure CN224351980U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of tunnel invert construction, and specifically discloses a positioning tool for the end of the embedded waterstop in the tunnel invert and a waterproof device for the tunnel invert. Background Technology
[0002] The invert arch is a major component of the high-speed railway tunnel and forms the foundation of the tunnel structure. It transmits the pressure from the upper tunnel level or the load from the high-speed rail operation to the underground, and effectively resists the reaction forces transmitted from the lower tunnel level. The invert arch and secondary lining together form the tunnel as a whole, increasing the structural integrity and stability. In addition to steel reinforcement, the invert arch and secondary lining are waterproofed at their interface using embedded waterstops.
[0003] Currently, the embedded waterstop is fixed by welding the reinforcement bars of the secondary lining with the reinforcement bars. During welding, the weld slag can easily burn the waterstop, and the fixing effect is not ideal, often resulting in wrinkles. Moreover, the reinforcement bars are prone to detachment during the pouring of the inverted arch concrete, affecting the shape and elevation of the embedded waterstop. Utility Model Content
[0004] This utility model provides a positioning fixture for the end of an embedded waterstop in a tunnel invert and a waterproofing device for the tunnel invert, in order to improve the following technical problems existing in the method of fixing the embedded waterstop by welding the reinforcement bars to the secondary lining reinforcement bars:
[0005] 1. Welding slag can easily burn the waterstop during welding;
[0006] 2. The alignment and elevation of the waterstop were not properly controlled after the invert arch construction was completed.
[0007] The utility model provides a positioning fixture for the end of an embedded waterstop in a tunnel invert arch, including clamp plate I, clamp plate II, a rigid connector, a turnbuckle, and a rigid fixing rod. Clamp plate I and clamp plate II are used to clamp and fix the ends of the embedded waterstop on both sides, and clamp plate I and clamp plate II are detachably connected by a locking device. The first end of the rigid connector is fixedly connected to clamp plate I or clamp plate II, and the second end extends beyond the edge of the end of the embedded waterstop and is sleeved on the hook of the turnbuckle. The hanging ring of the turnbuckle is sleeved on the rigid fixing rod. The rigid fixing rod is used to fix the initial support of the tunnel.
[0008] In the aforementioned positioning fixture for the end of the embedded waterstop in the tunnel invert, the surfaces of clamping plate I and clamping plate II that connect with the end of the embedded waterstop are clamping surfaces, and the clamping surfaces are adapted to the end of the embedded waterstop.
[0009] In the aforementioned positioning fixture for the end of the embedded waterstop in the tunnel invert, the clamping surface is provided with anti-fall-off patterns to increase friction.
[0010] In the aforementioned positioning fixture for the end of the embedded waterstop in the tunnel invert arch, connecting holes are provided at both ends of clamp plate I and clamp plate II; the locking components include bolts and nuts; the bolts pass through the connecting holes of clamp plate I and clamp plate II and are tightened by nuts.
[0011] In the aforementioned positioning fixture for the end of the embedded waterstop in the tunnel invert, the first ends of clamp plate I and clamp plate II are hinged, and the second ends are provided with connecting holes; the locking components include bolts and nuts; the bolts pass through the connecting holes of clamp plate I and clamp plate II and are fastened by nuts.
[0012] In the above-mentioned positioning fixture for the end of the embedded waterstop in the tunnel invert, the rigid connectors include U-shaped connectors and annular connectors; the two ends of the U-shaped connectors are fixedly connected to clamp I or clamp II; the first end of the annular connector is sleeved on the U-shaped connector, and the second end is sleeved on the hook of the turnbuckle.
[0013] In the aforementioned positioning fixture for the end of the embedded waterstop in the tunnel invert arch, clamp I or clamp II is made of steel plate; the U-shaped connector and the ring connector are made of steel bars; the two ends of the U-shaped connector are welded to clamp I or clamp II; and the rigid fixing rod is made of steel bars.
[0014] The waterproofing device for tunnel invert provided by this utility model includes a centrally embedded waterstop. The two ends of the centrally embedded waterstop are installed at the junction of the invert and the secondary lining through the aforementioned centrally embedded waterstop end positioning fixture.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] 1. When installing the embedded waterstop in the invert arch, clamp plate I and clamp plate II are used to fasten the ends. The installation position of clamp plate I and clamp plate II ensures that the second end of the rigid connector exceeds the edge of the embedded waterstop end and allows the hook of the turnbuckle to be installed without obstruction. Clamp plate I and clamp plate II are fixed with locking parts. According to the design elevation of the embedded waterstop, after drilling holes at appropriate positions on the initial support surface of the tunnel, a rigid fixing rod is inserted. The hook of the turnbuckle is connected to the rigid connector, and the hanging ring is sleeved on the rigid fixing rod to realize the installation of the embedded waterstop. This effectively avoids the welding slag generated by welding from burning the waterstop and does not damage the waterstop.
[0017] 2. Fine-tune the elevation of the waterstop by adjusting the angle of the rigid fixing rod, and fine-tune the tightness of the waterstop by adjusting the length of the turnbuckle, to ensure the alignment and elevation of the waterstop after the invert arch concrete construction is completed.
[0018] 3. The above-mentioned positioning fixture for the end of the embedded waterstop in the tunnel invert is not easily deformed, which can effectively fix the embedded waterstop and ensure the pre-embedding effect of the embedded waterstop. It is convenient and quick to disassemble and assemble, and has a high turnover rate. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 A schematic diagram of the positioning fixture for the end of the embedded waterstop in the tunnel invert arch;
[0021] Figure 2 for Figure 1 A view from another direction;
[0022] Figure 3 A schematic diagram of the waterproofing device for the tunnel invert arch;
[0023] Figure 4 for Figure 3 A magnified view of a portion of the image.
[0024] In the diagram: 1-Clamping plate I; 2-Clamping plate II; 3-Turn screw; 4-Rigid fixing rod; 5-Bolt; 6-Nut; 7-U-shaped connector; 8-Ring connector; 100-Embedded waterstop; 200-Tunnel initial support. Detailed Implementation
[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] Example 1
[0027] This embodiment provides a positioning fixture for the end of an embedded waterstop in a tunnel invert, including clamp plate I1, clamp plate II2, rigid connector, turnbuckle 3, and rigid fixing rod 4. Clamp plate I1 and clamp plate II2 are used to clamp and fix both sides of the end of the embedded waterstop 100, and clamp plate I1 and clamp plate II2 are detachably connected by locking components. The first end of the rigid connector is fixedly connected to clamp plate I1 or clamp plate II2, and the second end extends beyond the edge of the end of the embedded waterstop 100 and is sleeved on the hook of the turnbuckle 3. The hanging ring of the turnbuckle 3 is sleeved on the rigid fixing rod 4. The rigid fixing rod 4 is used to fix the initial support 200 of the tunnel.
[0028] In the aforementioned positioning fixture for the end of the embedded waterstop in the tunnel invert, the surfaces of clamping plates I1 and II2 that are in contact with the end of the embedded waterstop 100 are clamping surfaces. The clamping surfaces are adapted to the end of the embedded waterstop 100 to ensure that the clamping plates fit snugly against the embedded waterstop 100.
[0029] In the aforementioned positioning fixture for the end of the embedded waterstop in the tunnel invert, the clamping surface is provided with anti-fall-off patterns to increase friction.
[0030] This embodiment provides two connection methods for clamp I1 and clamp II2.
[0031] The first connection method is as follows: connecting holes are provided at both ends of clamping plate I1 and clamping plate II2; the locking components include bolt 5 and nut 6; bolt 5 passes through the connecting holes of clamping plate I1 and clamping plate II2 and is fastened by nut 6.
[0032] The second connection method is as follows: the first ends of clamping plate I1 and clamping plate II2 are hinged, and the second end is provided with a connection hole; the locking components include bolt 5 and nut 6; bolt 5 passes through the connection hole of clamping plate I1 and clamping plate II2 and is fastened by nut 6.
[0033] In the above-mentioned positioning fixture for the end of the embedded waterstop in the tunnel invert, the rigid connectors include a U-shaped connector 7 and an annular connector 8; both ends of the U-shaped connector 7 are fixedly connected to the clamping plate I1 or clamping plate II2; the first end of the annular connector 8 is sleeved on the U-shaped connector 7, and the second end is sleeved on the hook of the turnbuckle 3.
[0034] In the above-mentioned positioning fixture for the end of the embedded waterstop in the tunnel invert arch, clamping plate I1 or clamping plate II2 is made of steel plate; U-shaped connector 7 and ring connector 8 are made of steel bars; both ends of U-shaped connector 7 are welded to clamping plate I1 or clamping plate II2; rigid fixing rod 4 is made of steel bars.
[0035] When using the above-mentioned positioning fixture for the end of the embedded waterstop in the tunnel invert arch, the end of the embedded waterstop 100 is fastened with clamp plate I1 and clamp plate II2. The installation position of clamp plate I1 and clamp plate II2 ensures that the second end of the annular connector 8 extends beyond the edge of the embedded waterstop 100 and allows the hook of the turnbuckle 3 to be installed without obstruction. Bolt 5 is passed through the connection hole 3.3 of clamp plate I1 and clamp plate II2 and tightened with nut 6. According to the design elevation of the embedded waterstop 100, after drilling a hole at an appropriate position on the surface of the tunnel initial support 200, a rigid fixing rod 4 is inserted. The hook of the turnbuckle 3 is connected to the annular connector 8, and the hanging ring of the turnbuckle 3 is sleeved on the rigid fixing rod 4. The elevation of the embedded waterstop 100 is finely adjusted by adjusting the angle of the rigid fixing rod 4, and the tightness of the waterstop 2 is finely adjusted by adjusting the length of the turnbuckle 3. The aforementioned positioning fixture for the end of the embedded waterstop in the tunnel invert is not easily deformed, and can effectively fix the embedded waterstop 100%, ensuring the alignment and elevation of the waterstop after the invert concrete construction is completed. At the same time, it does not damage the waterstop, effectively avoiding the burning of the waterstop by welding slag, ensuring the pre-embedding effect of the embedded waterstop, and is convenient and quick to disassemble and assemble, with a high turnover rate.
[0036] Example 2
[0037] This embodiment provides a waterproofing device for a tunnel invert arch, including a centrally embedded waterstop 100. The two ends of the centrally embedded waterstop 100 are installed at the junction of the invert arch and the secondary lining using the aforementioned tunnel invert arch centrally embedded waterstop end positioning fixture.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A positioning fixture for the end of an embedded waterstop in a tunnel invert arch, characterized in that, Includes clamp plate I, clamp plate II, rigid connectors, turnbuckles, and rigid fixing rods; The clamping plates I and II are used to clamp and fix the two sides of the end of the embedded waterstop. The clamping plates I and II are detachably connected by locking components. The first end of the rigid connector is fixedly connected to clamp I or clamp II, and the second end extends beyond the edge of the end of the embedded waterstop and is sleeved on the hook of the turnbuckle. The hanging ring of the turnbuckle is sleeved on the rigid fixing rod; The rigid fixing rod is used to fix it to the initial support of the tunnel.
2. The positioning fixture for the end of the embedded waterstop in the tunnel invert arch according to claim 1, characterized in that, The surfaces of clamping plates I and II that connect with the ends of the embedded waterstop are clamping surfaces, which are adapted to the ends of the embedded waterstop.
3. The positioning fixture for the end of the embedded waterstop in the tunnel invert arch according to claim 2, characterized in that, The clamping surface is decorated with anti-drop patterns to increase friction.
4. The positioning fixture for the end of the embedded waterstop in the tunnel invert arch according to claim 1, characterized in that, Both ends of clamp plate I and clamp plate II are provided with connection holes; Locking components include bolts and nuts; The bolts pass through the connecting holes of clamp I and clamp II and are tightened by nuts.
5. The positioning fixture for the end of the embedded waterstop in the tunnel invert arch according to claim 1, characterized in that, The first ends of clamping plate I and clamping plate II are hinged together, and the second ends are provided with connecting holes; Locking components include bolts and nuts; The bolts pass through the connecting holes of clamp I and clamp II and are tightened by nuts.
6. The positioning fixture for the end of the embedded waterstop in the tunnel invert arch according to claim 1, characterized in that, Rigid connectors include U-shaped connectors and ring connectors; The two ends of the U-shaped connector are fixedly connected to clamp I or clamp II; The first end of the ring connector is fitted onto the U-shaped connector, and the second end is fitted onto the hook of the turnbuckle.
7. The positioning fixture for the end of the embedded waterstop in the tunnel invert arch according to claim 6, characterized in that, Clamping plate I or clamping plate II is made of steel plate; U-shaped connectors and ring connectors are made of steel bars; The two ends of the U-shaped connector are welded to clamp plate I or clamp plate II; The rigid fixing rod is made of steel bars.
8. A waterproofing device for a tunnel invert arch, comprising a centrally embedded waterstop, characterized in that, The two ends of the embedded waterstop are installed at the junction of the tunnel invert arch and the secondary lining using the end positioning fixture of the embedded waterstop in the tunnel invert arch as described in any one of claims 1-7.