Waterproof structure for shield tunnel section contact channel
By employing a multi-layered protective structure consisting of a buffer sleeve, drainage layer, waterproof layer, and protective layer in the connecting passage between shield tunnel sections, combined with the design of fixing heads, connecting rings, and sealing rings, the problems of waterstop misalignment and sealant aging were solved, achieving a more stable waterproof effect and structural safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-03-13
AI Technical Summary
In traditional waterproofing structures for connecting passages between shield tunnel sections, the waterstop is prone to misalignment and deformation, and the sealant is prone to aging and cracking, resulting in poor waterproofing performance.
It adopts a multi-layer protective structure including a buffer sleeve, a drainage layer, a waterproof layer and a protective layer. The auxiliary mechanism enhances the connection stability and sealing performance through the combination design of a fixing head, a connecting ring and a sealing ring. It utilizes the material properties of non-woven fabric, polyvinyl chloride waterproof membrane and fiber-reinforced plastic to achieve multi-layer protection.
It effectively buffers external pressure and vibration, drains water in a timely manner, prevents moisture penetration, protects the internal structure, and enhances the waterproof performance and structural safety of the connecting passage.
Smart Images
Figure CN223991767U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterproof structure technology, specifically a waterproof structure for connecting passages in shield tunnel sections. Background Technology
[0002] Shield tunnels are widely used in urban construction as a key construction method for modern urban underground transportation and municipal pipeline networks. Connecting passages, as an important component of shield tunnel sections, serve functions such as personnel passage, equipment maintenance, and emergency evacuation.
[0003] Based on the above, the following problems were found: there are numerous joints between the connecting passage and the main structure of the shield tunnel, and between the various sections of the connecting passage. These joints are critical for waterproofing and are also the main weak points in the existing waterproofing structure. Traditional joint waterproofing often uses materials such as waterstops and sealants. However, waterstops are prone to misalignment and deformation during construction, resulting in poor adhesion to the concrete; sealants, on the other hand, will age and crack over time, losing their sealing effect.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a waterproof structure for the connecting passage between shield tunnel sections, in order to achieve a more practical value. Utility Model Content
[0005] The purpose of this utility model is to provide a waterproof structure for connecting passages in shield tunnel sections, in order to solve the problems mentioned in the background art, which are that traditional joint waterproofing mainly uses materials such as waterstops and sealants, but waterstops are prone to misalignment and deformation during construction, resulting in poor adhesion to concrete; and sealants will age and crack over time, losing their sealing effect.
[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:
[0007] A waterproof structure for a connecting passage in a shield tunnel section includes an auxiliary mechanism and a waterproof mechanism. The waterproof mechanism includes a buffer sleeve, a drainage layer, a waterproof layer, and a protective layer. The buffer sleeve has a drainage layer inside, the drainage layer has a waterproof layer inside, and the waterproof layer has a protective layer inside. The outer side of the drainage layer has several drainage grooves. The auxiliary mechanism is located inside the protective layer and includes a first fixing head, a connecting ring, and a second fixing head. The outer sides of the first fixing head, the connecting ring, and the second fixing head all abut against the inner wall of the protective layer.
[0008] Furthermore, a first docking ring is installed at one end of the first fixing head, and a first docking groove is provided at one end of the second fixing head.
[0009] The beneficial effect of adopting the above-mentioned further solution is that the first docking ring of the first fixing head and the first docking groove of the second fixing head provide a basic structure for the connection between the components of the auxiliary mechanism, which facilitates splicing.
[0010] Furthermore, each of the connecting rings has a second mating ring installed at one end, and a second mating groove is provided at the other end of each connecting ring.
[0011] The beneficial effect of adopting the above-mentioned further solution is that the second mating ring and the second mating groove of the connecting ring facilitate its docking with the first fixed head and the second fixed head, thereby enhancing the flexibility and convenience of the auxiliary mechanism connection.
[0012] Furthermore, the first docking groove is inserted into the second docking ring, and the first docking ring is inserted into the second docking groove.
[0013] The beneficial effect of adopting the above-mentioned further solution is that the insertion and cooperation of the first docking groove and the second docking ring, and the first docking ring and the second docking groove, enables the first fixing head, the connecting ring and the second fixing head to be connected to each other, forming a stable auxiliary reinforcement structure and enhancing the structural strength of the connecting channel.
[0014] Furthermore, a first sealing ring is fitted on the outer side of the first mating groove, and a first sealing groove is formed on the inner side of the second mating ring, with the first sealing ring and the first sealing groove engaging with each other.
[0015] The beneficial effect of adopting the above-mentioned further solution is that the first sealing ring on the outer side of the first mating groove and the first sealing groove on the inner side of the second mating ring are engaged, effectively preventing water from seeping in from the connection and improving the waterproof performance of the connection part of the auxiliary mechanism.
[0016] Furthermore, a second sealing ring is fitted on the outer side of the second mating groove, and a second sealing groove is opened on the inner side of the first mating ring, with the second sealing ring and the second sealing groove engaging.
[0017] The beneficial effect of adopting the above-mentioned further solution is that the second sealing ring on the outer side of the second mating groove is engaged with the second sealing groove on the inner side of the first mating ring, which further enhances the sealing of the connection part of the auxiliary mechanism, prevents leakage, and ensures waterproof effect.
[0018] Furthermore, a first mounting block is installed on both sides of the interior of the first fixing head, a second mounting block is installed on both sides of the interior of the second fixing head, and a third mounting block and a fourth mounting block are respectively installed on one side of the first mounting block and the second mounting block at both ends of the interior of the connecting ring.
[0019] The beneficial effect of adopting the above-mentioned further solution is that the first mounting block, the second mounting block, the third mounting block and the fourth mounting block installed inside the first fixing head, the second fixing head and the connecting ring provide fixing points for the installation of fixing bolts, which facilitates further strengthening of the connection between the components through fixing bolts and improves the overall stability of the auxiliary mechanism.
[0020] Furthermore, both the first and fourth mounting blocks are equipped with movably inserted fixing bolts, one end of which is threadedly connected to the third and second mounting blocks, respectively.
[0021] The beneficial effect of adopting the above-mentioned further solution is that the fixing bolt passes through the first mounting block and the fourth mounting block, and is threadedly connected to the third mounting block and the second mounting block, firmly fixing the first fixing head, the connecting ring and the second fixing head together, enhancing the structural strength and stability of the auxiliary mechanism, and ensuring the reliability of the waterproof structure of the connecting channel.
[0022] Furthermore, the buffer sleeve is made of non-woven fabric, the waterproof layer is made of polyvinyl chloride waterproof membrane, and the protective layer is made of fiber-reinforced plastic.
[0023] The beneficial effects of adopting the above-mentioned further solutions are that the buffer sleeve is made of non-woven fabric, which is soft and has a certain buffering performance, and can effectively buffer external pressure and vibration; the waterproof layer is made of polyvinyl chloride waterproof membrane, which has excellent waterproof performance and can effectively prevent water penetration; the protective layer is made of fiber-reinforced plastic, which is high in strength and wear-resistant, and protects the waterproof layer from external damage from the inside. The combination of the three ensures the waterproof effect and structural safety of the connecting passage between shield tunnel sections from multiple aspects of buffering, waterproofing and protection.
[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: The waterproof structure for the connecting passage between shield tunnel sections has an auxiliary mechanism installed inside the protective layer, which plays a role in reinforcement and connection; the buffer sleeve, drainage layer, waterproof layer and protective layer of the waterproof mechanism form a multi-layer protective structure. The buffer sleeve can buffer external pressure, the drainage channel of the drainage layer can drain accumulated water in time, the waterproof layer prevents water penetration, and the protective layer protects the internal structure, which together ensures the waterproof performance of the connecting passage between shield tunnel sections. The buffer sleeve is made of non-woven fabric, which is soft and has a certain buffering performance, and can effectively buffer external pressure and vibration; the waterproof layer is made of polyvinyl chloride waterproof membrane, which has excellent waterproof performance and can effectively prevent water penetration; the protective layer is made of fiber-reinforced plastic, which is high in strength and wear-resistant, and protects the waterproof layer from external damage from the inside. The combination of the three ensures the waterproof effect and structural safety of the connecting passage between shield tunnel sections from multiple aspects of buffering, waterproofing and protection. The second docking ring and the second docking groove of the connecting ring facilitate docking with the first fixed head and the second fixed head, enhancing the flexibility and convenience of the auxiliary mechanism connection. Attached Figure Description
[0025] Figure 1 This is a three-dimensional structural diagram of a waterproof structure for a connecting passage in a shield tunnel section, as disclosed in an embodiment of this utility model.
[0026] Figure 2 This is a three-dimensional structural diagram of the auxiliary mechanism and waterproof mechanism for the waterproof structure of the connecting passage between shield tunnel sections disclosed in this utility model embodiment;
[0027] Figure 3 This is a three-dimensional structural diagram of the auxiliary mechanism for the waterproof structure of the connecting passage between shield tunnel sections disclosed in this embodiment of the utility model.
[0028] Figure 4 This is a three-dimensional structural diagram of the auxiliary mechanism for a waterproof structure used in a connecting passage between shield tunnel sections, as disclosed in an embodiment of this utility model.
[0029] Figure 5 This is a cross-sectional schematic diagram of a waterproofing mechanism for a connecting passage in a shield tunnel section, as disclosed in an embodiment of this utility model.
[0030] The components include: 1. Auxiliary mechanism; 101. First fixing head; 10101. First docking groove; 10102. First sealing ring; 10103. First docking ring; 10104. Second sealing groove; 10105. First sealing groove; 10106. Second docking ring; 10107. Second docking groove; 10108. Second sealing ring; 102. Connecting ring; 103. Second fixing head; 104. First mounting block; 105. Fixing bolt; 106. Third mounting block; 107. Fourth mounting block; 108. Second mounting block; 2. Waterproof mechanism; 201. Buffer sleeve; 202. Drainage groove; 203. Drainage layer; 204. Waterproof layer; 205. Protective layer. Detailed Implementation
[0031] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.
[0032] Example 1
[0033] Please see Figure 1 - Figure 5This utility model provides a technical solution: a waterproof structure for a connecting passage in a shield tunnel section, including an auxiliary mechanism 1 and a waterproof mechanism 2. The waterproof mechanism 2 includes a buffer sleeve 201, a drainage layer 203, a waterproof layer 204, and a protective layer 205. The buffer sleeve 201 has a drainage layer 203 inside, the drainage layer 203 has a waterproof layer 204 inside, the waterproof layer 204 has a protective layer 205 inside, and the outer surface of the drainage layer 203 has several drainage grooves 202. The auxiliary mechanism 1 is disposed inside the protective layer 205, and the auxiliary mechanism 1 includes a first fixing head 101 and a connecting ring 102. The outer sides of the first fixing head 101, connecting ring 102, and second fixing head 103 all abut against the inner wall of the protective layer 205. The auxiliary mechanism 1 is installed inside the protective layer 205 to reinforce and connect it. The buffer sleeve 201, drainage layer 203, waterproof layer 204, and protective layer 205 of the waterproof mechanism 2 form a multi-layer protective structure. The buffer sleeve 201 can buffer external pressure, the drainage groove 202 of the drainage layer 203 can drain accumulated water in time, the waterproof layer 204 prevents water penetration, and the protective layer 205 protects the internal structure, together ensuring the waterproof performance of the connecting passage between shield tunnel sections.
[0034] Please see Figure 1 - Figure 5A first mating ring 10103 is installed at one end of the first fixing head 101, and a first mating groove 10101 is formed at one end of the second fixing head 103. A second mating ring 10106 is installed at one end of each connecting ring 102, and a second mating groove 10107 is formed at the other end of each connecting ring 102. The first mating groove 10101 and the second mating ring 10106 are inserted together, and the first mating ring 10103 and the second mating groove 10107 are inserted together. A first sealing ring 10102 is fitted on the outside of the first mating groove 10101. The inner side of the second mating ring 10106 has a first sealing groove 10105, and the first sealing ring 10102 is engaged with the first sealing groove 10105. The outer side of the second mating groove 10107 is fitted with a second sealing ring 10108. The inner side of the first mating ring 10103 has a second sealing groove 10104, and the second sealing ring 10108 is engaged with the second sealing groove 10104. The first mating ring 10103 and the first mating groove 10101 of the first fixing head 103 are auxiliary mechanisms 1. The connections between the components provide a basic structure, facilitating assembly. The second mating ring 10106 and the second mating groove 10107 of the connecting ring 102 facilitate docking with the first fixing head 101 and the second fixing head 103, enhancing the flexibility and convenience of the auxiliary mechanism 1 connection. The insertion and engagement of the first mating groove 10101 with the second mating ring 10106 and the first mating ring 10103 with the second mating groove 10107 connects the first fixing head 101, the connecting ring 102, and the second fixing head 103, forming a stable connection. The auxiliary reinforcement structure enhances the structural strength of the connecting channel. The first sealing ring 10102 on the outside of the first docking groove 10101 engages with the first sealing groove 10105 on the inside of the second docking ring 10106, effectively preventing moisture from seeping in from the connection and improving the waterproof performance of the connection part of the auxiliary mechanism 1. The second sealing ring 10108 on the outside of the second docking groove 10107 engages with the second sealing groove 10104 on the inside of the first docking ring 10103, further strengthening the sealing of the connection part of the auxiliary mechanism 1, preventing leakage, and ensuring the waterproof effect.
[0035] Please see Figure 1 - Figure 5The first fixing head 101 has first mounting blocks 104 installed on both sides of its interior, and the second fixing head 103 has second mounting blocks 108 installed on both sides of its interior. The connecting ring 102 has a third mounting block 106 and a fourth mounting block 107 installed at its two ends, located on one side of the first and second mounting blocks 104 and 108 respectively. Fixing bolts 105 are movably inserted into the interior of both the first and fourth mounting blocks 104 and 107. One end of each fixing bolt 105 is threadedly connected to the third and second mounting blocks 106 and 108 respectively. The buffer sleeve 201 is made of non-woven fabric, the waterproof layer 204 is made of polyvinyl chloride waterproof membrane, and the protective layer 205 is made of fiber-reinforced plastic. The first mounting blocks 104, 108, 106, and 107 installed inside the first fixing head 101, second fixing head 103, and connecting ring 102 provide fixing points for the fixing bolts 105, facilitating the installation of the fixing bolts 105. The connection between the components is further reinforced by the fixing bolts 105, which improves the overall stability of the auxiliary mechanism 1. The fixing bolts 105 pass through the first mounting block 104 and the fourth mounting block 107, and are threadedly connected to the third mounting block 106 and the second mounting block 108, which firmly fixes the first fixing head 101, the connecting ring 102 and the second fixing head 103 together, enhancing the structural strength and stability of the auxiliary mechanism 1 and ensuring the reliability of the waterproof structure of the connecting passage. The buffer sleeve 201 is made of non-woven fabric, which is soft and has a certain buffering performance, and can effectively buffer external pressure and vibration. The waterproof layer 204 is made of polyvinyl chloride waterproof membrane, which has excellent waterproof performance and can effectively prevent water penetration. The protective layer 205 is made of fiber-reinforced plastic, which is high in strength and wear-resistant, and protects the waterproof layer 204 from external damage from the inside. The combination of the three ensures the waterproof effect and structural safety of the connecting passage in the shield tunnel section from multiple aspects such as buffering, waterproofing and protection.
[0036] Working principle
[0037] In use, the first fixing head 101, connecting ring 102, and second fixing head 103 of the auxiliary mechanism 1 are initially spliced by inserting the first mating ring 10103 into the second mating groove 10107 and the first mating groove 10101 into the second mating ring 10106. At the same time, the first sealing ring 10102 is engaged with the first sealing groove 10105 and the second sealing ring 10108 is engaged with the second sealing groove 10104 to ensure the sealing of the splice and prevent moisture from seeping in. Subsequently, the fixing bolt 105 passes through the first mounting block 104 and the fourth mounting block 107 and is connected to the third mounting block 105. The mounting block 106 and the second mounting block 108 are threaded together to firmly fix all components, enhancing the overall stability of the auxiliary mechanism 1 and providing structural reinforcement for the connecting passage. In the waterproof mechanism 2, the outermost buffer sleeve 201 is made of non-woven fabric, which can effectively buffer external pressure and vibration, protecting the internal structure. The drainage groove 202 on the outer side of the drainage layer 203 can guide the drainage of accumulated water in time, preventing the water from putting pressure on and eroding the waterproof layer 204. The waterproof layer 204 is made of polyvinyl chloride waterproof membrane, which, with its excellent waterproof performance, prevents groundwater from seeping into the interior of the connecting passage. The protective layer 205 is made of fiber-reinforced plastic, which, with its high strength and wear resistance, protects the waterproof layer 204 from mechanical damage and other external damage. The auxiliary mechanism 1 and the waterproof mechanism 2 work together to effectively ensure the waterproof performance and structural safety of the connecting passage in the shield tunnel section through multi-layer protection and reinforcement.
[0038] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Based on the technical solution of the present utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the present utility model.
Claims
1. A waterproof structure for a shield tunnel section communication passage, characterized by, Including auxiliary mechanism (1) and waterproof mechanism (2), the waterproof mechanism (2) includes buffer sleeve (201), drainage layer (203), waterproof layer (204) and protective layer (205), the inside of buffer sleeve (201) is provided with drainage layer (203), the inside of drainage layer (203) is provided with waterproof layer (204), the inside of waterproof layer (204) is provided with protective layer (205), the outside of drainage layer (203) is provided with a plurality of drainage groove (202); The auxiliary mechanism (1) is arranged in the inside of protective layer (205), and the auxiliary mechanism (1) includes first fixed head (101), connecting ring (102) and second fixed head (103), the outside of first fixed head (101), connecting ring (102) and second fixed head (103) is all with the inside wall of protective layer (205) abutment.
2. The waterproof structure for the shield tunnel interval communication passage according to claim 1, wherein, One end of the first fixed head (101) is provided with a first docking ring (10103), and one end of the second fixed head (103) is provided with a first docking groove (10101).
3. The waterproof structure for the shield tunnel interval communication passage according to claim 2, characterized in that, One end of the connecting ring (102) is provided with a second docking ring (10106), and the other end of the connecting ring (102) is provided with a second docking groove (10107).
4. The waterproof structure for the shield tunnel interval communication passage according to claim 3, characterized in that, The first docking groove (10101) and the second docking ring (10106) are inserted, and the first docking ring (10103) and the second docking groove (10107) are inserted.
5. The waterproof structure for the shield tunnel section communication passage according to claim 4, wherein, The outside of the first docking groove (10101) is provided with a first sealing ring (10102), and the inside of the second docking ring (10106) is provided with a first sealing groove (10105), and the first sealing ring (10102) and the first sealing groove (10105) are clamped.
6. The waterproof structure for the shield tunnel section communication passage according to claim 5, wherein The outside of the second docking groove (10107) is provided with a second sealing ring (10108), and the inside of the first docking ring (10103) is provided with a second sealing groove (10104), and the second sealing ring (10108) and the second sealing groove (10104) are clamped.
7. The waterproof structure for the shield tunnel interval communication passage according to claim 1, characterized in that, The inside of the first fixed head (101) is provided with a first mounting block (104) on both sides, the inside of the second fixed head (103) is provided with a second mounting block (108) on both sides, and the inside of the connecting ring (102) is provided with a third mounting block (106) and a fourth mounting block (107) on one side of the first mounting block (104) and the second mounting block (108) respectively.
8. The waterproof structure for the shield tunnel section communication passage according to claim 7, characterized in that, The inside of the first mounting block (104) and the fourth mounting block (107) is movably provided with a fixing bolt (105), and one end of the fixing bolt (105) is respectively screwed with the third mounting block (106) and the second mounting block (108).
9. The waterproof structure for the shield tunnel interval communication passage according to claim 1, wherein The buffer sleeve (201) is made of non-woven fabric, the waterproof layer (204) is made of polyvinyl chloride waterproof roll material, and the protective layer (205) is made of fiber reinforced plastic.