Floating tunnel joint water stop and vibration reduction structure and method

Abstract

The invention relates to a floating tunnel joint water-stopping and vibration-reducing structure which is connected between adjacent pipe sections of a floating tunnel, comprises a plurality of layers of water-stopping structures which are connected with the adjacent pipe sections in a sealing manner, and is characterized by further comprising friction dampers which are hinged between the adjacent pipe sections and are adjustable in friction force, and the friction dampers are arranged on the inner sides of the plurality of layers of water-stopping structures; and sliding friction motion is formed along with relative motion of adjacent pipe joints. The frequent impact of the long-term dynamic working condition of the floating tunnel on the multi-layer water stop structure is relieved, the fatigue working condition of the multi-layer water stop structure is improved, the fatigue life of the multi-layer water stop structure is prolonged, the durability of the multi-layer water stop structure is improved, the failure risk of the multi-layer water stop structure is reduced, and the service life of the multi-layer water stop structure is prolonged. And the friction damper is arranged on the inner side of the multi-layer water stop structure, so that overhaul and maintenance are facilitated, and the practicability is high. The invention further provides a floating tunnel joint water stop and vibration reduction method.

Description

Technical Field

[0001] The invention relates to a suspension tunnel joint water-stopping and vibration-reducing structure and method, belonging to the technical field of suspension tunnel connection. Background Art

[0002] A suspended tunnel is a transportation structure that crosses deep straits, deep lakes and other waters. It is generally composed of a pipe body floating at a certain depth in the water, a joint structure connecting the pipe body, an anchor system anchored on an underwater foundation, and structures connecting the two banks.

[0003] Pipe joints are critical parts of underwater tunnel projects. Compared with the strength and stiffness of concrete pipe sections, the structure of the joints is still a weak link. The sealing and water-stopping function of the joints is of utmost importance in the entire tunnel waterproofing system. At present, most of the immersed tube tunnels built internationally and domestically are connected by flexible waterstop structures. The flexible waterstops used include OMEGA (Ω) waterstops, because this type of waterstop can adapt to larger three-dimensional displacements and has better sealing performance for complex deformations of tunnels and other structures. Although this structure can meet the current successful operation of underwater tunnels, and the rubber waterstop relies on the pulling force between the pipe joints to pre-compress the waterstop to achieve the water-stopping and sealing function, the working conditions of the suspended tunnel are harsh, and the shear, opening, and compression displacements at the pipe joints are large, which is a huge challenge to the flexible waterstop structure. When facing large displacement and dislocation of suspended tunnels, the waterstop will be at risk of failure. In order to reduce the large displacement and dislocation of suspended tunnels in the prior art, shear keys that limit the relative movement of adjacent pipe segments are generally added to the flexible waterstop structure. For example, CN117418566A and CN118461668A both record the use of shear keys to limit the maximum deformation displacement between pipe segments to reduce the risk of failure of the waterstop. However, due to the long-term dynamic drift of suspended tunnels, the flexible waterstop structure between the pipe segments is frequently impacted and has been in severe fatigue conditions, which will affect its durability.

[0004] Therefore, how to alleviate the frequent impact of the long-term dynamic working conditions of the suspended tunnel on the water-stop structure and improve the durability of the flexible water-stop structure is an urgent problem to be solved in improving the quality of the suspended tunnel.

[0005] The relevant patent documents retrieved are: 1. CN202311694550.3-A numerical simulation method for the vibration reduction of immersed tube tunnel joints based on nanofluids; 2. CN202010716416.9-Retractable and vibration-reducing anchored suspended tunnel end connection device and construction method; 3. CN202410933999.9-Water-stopping structure and method for underwater floating tunnel pipe joint; 4. CN202310607085.9 - A pourable waterstop for underwater tunnels; 5.CN202310917710.X-A rubber waterstop for underwater tunnels; 6. CN202311649484.8-Suspended tunnel joint combined structure; 7.CN202311652172.2-Suspended tunnel pipe joint structure adapting to large deformation. Summary of the invention

[0006] The suspension tunnel joint water-stopping and vibration-damping structure provided by the present invention consumes the impact energy and forms a damping buffer through the sliding friction movement of the friction damper when the adjacent pipe segments are impacted by the dynamic drift of the suspension tunnel, thereby realizing the vibration-damping function, alleviating the frequent impacts on the multi-layer water-stopping structure caused by the long-term dynamic working conditions of the suspension tunnel, improving the fatigue working conditions of the multi-layer water-stopping structure, extending the fatigue life of the multi-layer water-stopping structure, improving the durability of the multi-layer water-stopping structure, reducing the failure risk of the multi-layer water-stopping structure, and improving the stability and reliability of the sealing and water-stopping at the suspension tunnel joint. The friction damper is arranged on the inner side of the multi-layer water-stopping structure, which is convenient for inspection and maintenance and has high practicality. The present invention also provides a suspension tunnel joint water-stopping and vibration-damping method.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: The suspended tunnel joint water-stopping and vibration-damping structure is connected between adjacent pipe sections of the suspended tunnel, and includes a multi-layer water-stopping structure that seals and connects adjacent pipe sections. It is characterized in that it also includes a friction damper that is hinged between adjacent pipe sections and has adjustable friction force. The friction damper is arranged on the inner side of the multi-layer water-stopping structure and forms sliding friction movement with the relative movement of adjacent pipe sections.

[0008] Preferably, the friction damper comprises a slide member hinged on the end surface of one pipe segment and a wear-resistant member hinged on the end surface of another pipe segment and connected with the slide member to form a sliding friction pair.

[0009] Preferably, the slide plate component includes a universal ball joint fixed on an end face of a pipe joint, an axle rod connected to the universal ball joint, and a slide plate connected to the axle rod one, and the wear-resistant component includes a universal ball joint fixed on another end face of the pipe joint, an axle rod connected to the universal ball joint, and a guide wear-resistant plate connected to the axle rod two, a slide groove for the slide plate to extend into is provided on the guide wear-resistant plate, and the slide plate extends into the slide groove to form a sliding friction pair with the guide wear-resistant plate.

[0010] Preferably, a circular through hole perpendicular to the slide groove is formed on the guide wear-resistant plate, and a waist-shaped through hole corresponding to the circular through hole is formed on the slide plate. The connecting bolts pass through the circular through hole and the waist-shaped through hole and are fastened to the guide wear-resistant plate, and move in the waist-shaped through hole as the slide plate slides in the slide groove.

[0011] Preferably, the guide wear-resistant plate comprises two guide plates fixed on the shaft rod 2 in upper and lower layers and wear-resistant plates respectively laid on the inner surfaces of the guide plates, a slide groove is formed between the two wear-resistant plates, and the slide plate is clamped between the two wear-resistant plates.

[0012] Preferably, the multi-layer waterstop structure includes a first waterstop, a second waterstop and a third waterstop which are arranged in sequence from the outside to the inside along the radial direction of the pipe segment. The first waterstop is wavy and made of a fiber composite material, the second waterstop is a rubber waterstop, and the third waterstop is an OMEGA waterstop. A shear member for limiting the relative movement of adjacent pipe segments is provided between the first waterstop and the second waterstop. The shear member consists of a shear protrusion provided on an end face of one pipe segment and a shear groove provided on another end face of the pipe segment and cooperating with the shear protrusion. The shear protrusion extends into the shear groove and there is a gap between the shear protrusion and the shear groove both in the radial and axial directions of the pipe segment.

[0013] Preferably, the second waterstop comprises a hollow rubber layer with an inner hollow, rubber plates integrally formed on both sides of the hollow rubber layer and respectively fitted with the end faces of the pipe segment, and both ends of the rubber plates are pressed by L-shaped pressure plates fastened to the end faces of the pipe segment.

[0014] Preferably, the third waterstop is connected to the pipe joint through a connecting assembly, which includes a fastening plate, a pressure plate welded on the fastening plate and pressed on the third waterstop, a pressure strip welded on the fastening plate and abutted against the end face of the pipe joint, and a locking bolt that passes through the fastening plate and is fastened by an embedded threaded sleeve in the pipe joint.

[0015] A method for water-stopping and vibration-damping of a suspended tunnel joint adopts the suspended tunnel joint water-stopping and vibration-damping structure described in any one of claims 1 to 4, and is characterized in that the number of friction dampers, the friction area and the friction force when the friction dampers form the friction movement of the slider are adjusted according to the inner diameter of the pipe segment, the application conditions and load requirements of the suspended tunnel joint water-stopping and vibration-damping structure.

[0016] Preferably, adjusting the friction area when the friction damper forms sliding friction motion refers to adjusting the contact area between the slide plate and the wear-resistant plate, and adjusting the friction force when the friction damper forms friction motion refers to adjusting the tightening force of the connecting bolts.

[0017] The beneficial effects of the invention are: The suspended tunnel joint water-stopping and vibration-damping structure of the present invention has a friction damper hinged between adjacent pipe sections on the inner side of the multi-layer water-stopping structure, which can form shear, opening and compression movements synchronously with the multi-layer water-stopping structure along with the movement of the adjacent pipe sections. When the adjacent pipe sections are impacted due to the dynamic drift of the suspended tunnel, the sliding friction movement of the friction damper consumes the impact energy, forms a damping buffer, realizes the vibration reduction function, reduces the movement speed of the adjacent pipe sections, reduces the displacement between the adjacent pipe sections, reduces the impact on the multi-layer water-stopping structure caused by the movement of the pipe sections, alleviates the frequent impact on the multi-layer water-stopping structure caused by the long-term dynamic working condition of the suspended tunnel, improves the fatigue working condition of the multi-layer water-stopping structure, prolongs the fatigue life of the multi-layer water-stopping structure, improves the durability of the multi-layer water-stopping structure, uses the multi-layer water-stopping structure to perform multi-layer sealing and water-stopping between adjacent pipe sections, uses the friction damper to reduce the impact on the multi-layer water-stopping structure caused by the dynamic drift of the suspended tunnel, reduces the failure risk of the multi-layer water-stopping structure, and improves the stability and reliability of the sealing and water-stopping at the joint of the suspended tunnel. The friction force of the friction damper is adjustable, and the friction force of the friction damper can be adjusted according to the application conditions, load requirements and pipe diameter of the suspended tunnel, so that the friction damper can adapt to the buffering and vibration reduction requirements of the multi-layer water-stop structure. The friction damper is arranged on the inner side of the multi-layer water-stop structure, which is convenient for inspection and maintenance and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the water-stopping and vibration-damping structure of the suspended tunnel joint of the present invention.

[0019] Figure 2 Schematic diagram of the installation of the friction damper.

[0020] Figure 3 for Figure 2 A partial enlarged schematic diagram of .

[0021] Figure 4 A schematic diagram of a skateboard.

[0022] Figure 5 This is the installation diagram of the second waterstop.

[0023] Figure 6 This is the installation diagram of the third waterstop.

[0024] Figure 7 Schematic diagram of the adaptive rotation of the friction damper following the shear movement of the multi-layer water-stop structure. DETAILED DESCRIPTION

[0025] Combine the following Figures 1 to 7 The embodiments of the present invention are described in detail.

[0026] The suspended tunnel joint water-stopping and vibration-damping structure is connected between adjacent pipe sections 100 of the suspended tunnel, and includes a multi-layer water-stopping structure 1 that seals and connects the adjacent pipe sections 100. It is characterized in that it also includes a friction damper 2 that is hinged between the adjacent pipe sections 100 and has adjustable friction force. The friction damper 2 is arranged on the inner side of the multi-layer water-stopping structure and forms a sliding friction movement with the relative movement of the adjacent pipe sections 100.

[0027] The above-mentioned suspended tunnel joint water-stopping and vibration-damping structure has a friction damper 2 hinged between adjacent pipe segments 100 on the inner side of the multi-layer water-stopping structure 1, which can form shear, opening and compression movements synchronously with the multi-layer water-stopping structure 1 as the adjacent pipe segments 100 move. When the adjacent pipe segments are impacted due to the dynamic drift of the suspended tunnel, the sliding friction movement of the friction damper 2 consumes the impact energy, forms a damping buffer, realizes the vibration reduction function, reduces the movement speed of the adjacent pipe segments, reduces the displacement between the adjacent pipe segments, reduces the impact on the multi-layer water-stopping structure 1 caused by the movement of the pipe segments, alleviates the frequent impact on the multi-layer water-stopping structure 1 caused by the long-term dynamic working conditions of the suspended tunnel, improves the fatigue working conditions of the multi-layer water-stopping structure 1, extends the fatigue life of the multi-layer water-stopping structure 1, improves the durability of the multi-layer water-stopping structure 1, uses the multi-layer water-stopping structure 1 to perform multi-layer sealing and water-stopping between adjacent pipe segments, uses the friction damper 2 to reduce the impact on the multi-layer water-stopping structure 1 caused by the dynamic drift of the suspended tunnel, reduces the failure risk of the multi-layer water-stopping structure, and improves the stability and reliability of the sealing and water-stopping at the joint of the suspended tunnel. The friction force of the friction damper 2 is adjustable, and the friction force of the friction damper 2 can be adjusted according to the application conditions, load-bearing requirements and pipe diameter of the suspended tunnel, so that the friction damper 2 can adapt to the buffering and vibration reduction requirements of the multi-layer water-stopping structure. The friction damper 2 is arranged on the inner side of the multi-layer water-stopping structure 1, which is convenient for inspection and maintenance and has high practicality.

[0028] The friction damper 2 includes a slide plate 3 hinged on the end face of one pipe segment and a wear-resistant part 4 hinged on the end face of another pipe segment and connected with the slide plate 3 to form a sliding friction pair. The sliding friction pair formed by the slide plate 3 and the wear-resistant part 4 slides and rubs with the movement of the adjacent pipe segments, and the wear-resistant part 4 increases the friction life of the friction damper 2 and reduces the maintenance probability and replacement frequency of the friction damper 2.

[0029] The slide plate 3 includes a universal ball joint 31 fixed on the end face of one pipe joint, a shaft 32 connected to the universal ball joint 31, and a slide plate 33 connected to the shaft 32. The wear-resistant part 4 includes a universal ball joint 41 fixed on the end face of another pipe joint, a shaft 42 connected to the universal ball joint 41, and a guide wear-resistant plate 43 connected to the shaft 42. The guide wear-resistant plate 43 is provided with a slide groove 44 for the slide plate 33 to extend into. The slide plate 33 extends into the slide groove 44 and forms a sliding friction pair with the guide wear-resistant plate 43. The slide plate 3 and the wear-resistant part 4 are both connected to the pipe joint through the universal ball joint, so that the slide plate 3 and the wear-resistant part 4 can form an adaptive rotation with the shear movement of the multi-layer water-stopping structure 1, such as Figure 7 As shown, when the multi-layer water-stopping structure 1 is compressed, opened or sheared with the movement of the adjacent pipe segments, the slide plate 3 and the wear-resistant member 4 will both form sliding friction movement. The shaft rod 1 32 is used to connect the slide plate 33, and the shaft rod 2 42 is used to connect the guide wear-resistant plate 43, so that the slide plate 33 extends into the slide groove 44, and the upper and lower surfaces of the slide plate 33 form sliding friction cooperation with the guide wear-resistant plate 43, thereby increasing the contact area of ​​the sliding friction pair and improving the buffering and vibration reduction performance of the friction damper.

[0030] The guide wear-resistant plate 43 is provided with a round through hole 45 perpendicular to the slide groove 44, and the slide plate 33 is provided with a waist-shaped through hole 34 corresponding to the round through hole 45. The connecting bolt 5 passes through the round through hole 45 and the waist-shaped through hole 34 and is fastened to the guide wear-resistant plate 43, and moves in the waist-shaped through hole 34 as the slide plate 33 slides in the slide groove 44. The connecting bolt 5 connects the guide wear-resistant plate 43 and the slide block 33 to prevent the two from being separated. The waist-shaped through hole 34 enables the slide block 33 to move relatively in the slide groove 44. By adjusting the tightening force of the connecting bolt 5, the clamping force of the guide wear-resistant plate 43 on the slide plate 33 can be adjusted, thereby adjusting the friction between the slide plate 33 and the guide wear-resistant plate 43 to meet the vibration reduction requirements of different working conditions.

[0031] The guide wear-resistant plate 43 includes two guide plates 431 fixed on the shaft rod 42 in upper and lower layers and wear-resistant plates 432 respectively laid on the inner surface of the guide plate 431, a slide groove 44 is formed between the two wear-resistant plates 432, and the slide plate 33 is clamped between the two wear-resistant plates 432. The guide plate 431 and the wear-resistant plate 432 form a split structure of the guide wear-resistant plate 43, which is convenient for the replacement of the wear-resistant plate 432. The wear-resistant plate 43 can be made of ultra-high molecular weight polyethylene, polytetrafluoroethylene or modified ultra-high molecular weight polyethylene, which has good wear resistance and high strength.

[0032] The multi-layer water stop structure 1 includes a first water stop 6, a second water stop 7 and a third water stop 8 which are arranged in sequence from the outside to the inside along the radial direction of the pipe section 100. The first water stop 6 is wavy and made of a fiber composite material, the second water stop 7 is a rubber water stop, and the third water stop 8 is an OMEGA water stop. A shear member 9 is provided between the first water stop 6 and the second water stop 7 to limit the relative movement of adjacent pipe sections. The shear member 9 is composed of a shear protrusion 91 provided on the end face of one pipe section and a shear groove 92 provided on the other end face of the pipe section and matched with the shear protrusion 91. The shear protrusion 61 extends into the shear groove 92 and there is a gap between the shear protrusion 91 and the shear groove 92 along the radial and axial directions of the pipe section. The first water stop 6 is located at the outermost side of the pipe section, is wavy and made of a fiber composite material, can adapt to larger shearing and opening deformation, and has more excellent corrosion resistance and impact resistance, resists external seawater erosion and debris impact, and realizes the sealing and water stopping function.

[0033] The shear key 9 is arranged between the first waterstop 6 and the second waterstop 7, the shear protrusion 91 and the shear groove 92 cooperate, and gaps are left in the axial and radial directions. The gap distance can be designed according to the application conditions. When two adjacent pipe sections are opened and sheared, the other ends of the two pipe sections are limited due to the contact between the shear protrusion 91 and the shear groove 92. When large deformation occurs between the pipe sections of the suspended tunnel, the multi-layer waterstop structure can be effectively protected to prevent the multi-layer waterstop structure from being stretched or broken. The second waterstop 7 and the third waterstop 8 can adapt to large deformation shear, opening, and compression displacement to form a multi-layer sealing structure from the outside to the inside between adjacent pipe sections, and the deformation displacement of the three-layer waterstop is limited by the shear key 9 to avoid permanent damage to the waterstop caused by excessive deformation displacement.

[0034] The second water stop 7 comprises a hollow rubber layer 71 with an inner hollow, and rubber plates 72 integrally formed on both sides of the hollow rubber layer 71 and respectively fitted with the end faces of the pipe joint 100, and both ends of the rubber plate 42 are pressed by L-shaped pressing plates 73 fastened to the end faces of the pipe joint. The hollow rubber layer 71 has an inner hollow, which can adapt to large deformation shear, opening, and compression displacement, and does not require pre-pressing installation, has strong adaptability to working conditions, is more convenient to install, and is more practical.

[0035] The third waterstop 8 is connected to the pipe joint through a connecting assembly 9, which includes a fastening plate 91, a pressure plate 92 welded on the fastening plate 91 and pressed on the third waterstop 8, a pressure strip 93 welded on the fastening plate 91 and abutting against the end face of the pipe joint 100, and a locking bolt 94 passing through the fastening plate 91 and fastened to the embedded screw sleeve in the pipe joint. The pressure plate 92 and the pressure strip 93 are welded on both sides of the fastening plate 91. After the locking bolt 94 is tightened, the pressure plate 92 presses the third waterstop 8, and the pressure strip 93 presses on the end face of the pipe joint 100, so that the pressure block 92 is pressed tighter, and a protrusion in contact with the end face of the pipe joint is set on the OMEGA waterstop to enhance the sealing and water-stopping performance. The OMEGA waterstop can adapt to larger opening, expansion and contraction and shear displacement, and has good sealing performance for complex deformation of structures such as tunnels.

[0036] The suspension tunnel joint water-stopping and vibration reduction method adopts the suspension tunnel joint water-stopping and vibration reduction structure described above, and is characterized in that: according to the inner diameter of the pipe segment 100, the application conditions and load requirements of the suspension tunnel joint water-stopping and vibration reduction structure, the number of friction dampers 2, the friction area and friction force when the friction damper 2 forms the sliding block friction movement are adjusted. According to the size, application conditions and load requirements of the pipe segment, the number of friction dampers 2 distributed along the circumference of the pipe segment and the friction area and friction force when each friction damper 2 forms the sliding block friction movement are adjusted to adjust the friction damping characteristics between adjacent pipe segments, thereby adapting to different vibration reduction requirements.

[0037] Among them, adjusting the friction area when the friction damper 2 forms a sliding friction motion refers to adjusting the contact area between the slide plate 33 and the wear-resistant plate 43, and adjusting the friction force when the friction damper 2 forms a friction motion refers to adjusting the tightening force of the connecting bolt 64. By adjusting the contact area between the slide plate 33 and the wear-resistant plate 43 and adjusting the tightening force of the connecting bolt 64, the friction area and friction force of the friction damper are adjusted to adjust the friction damping characteristics of a single friction damper 2, so as to meet the buffering and vibration reduction requirements of the multi-layer water-stopping structure under different application conditions.

[0038] The above is a complete description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the described embodiments are only part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A suspension tunnel joint water-stopping and vibration-damping structure, connected between adjacent pipe sections of a suspension tunnel, includes a multi-layer water-stopping structure that seals and connects adjacent pipe sections, and is characterized by: It also includes a friction damper which is hinged between adjacent pipe sections and has adjustable friction force. The friction damper is arranged on the inner side of the multi-layer water-stopping structure and forms sliding friction movement with the relative movement of adjacent pipe sections.

2. The floating tunnel joint water-stopping and vibration-damping structure according to claim 1 is characterized in that: The friction damper comprises a slide plate part hinged on the end surface of one pipe section and a wear-resistant part hinged on the end surface of another pipe section and connected with the slide plate part to form a sliding friction pair.

3. The floating tunnel joint water-stopping and vibration-damping structure according to claim 2 is characterized in that: The slide plate component includes a universal ball joint fixed on the end face of one pipe joint, a shaft rod connected to the universal ball joint, and a slide plate connected to the shaft rod. The wear-resistant component includes a universal ball joint fixed on the end face of another pipe joint, a shaft rod connected to the universal ball joint, and a guide wear-resistant plate connected to the shaft rod. The guide wear-resistant plate is provided with a sliding groove for the sliding block to extend into. The slide plate extends into the sliding groove to form a sliding friction pair with the guide wear-resistant plate.

4. The floating tunnel joint water-stopping and vibration-damping structure according to claim 3 is characterized in that: The guide wear-resistant plate is provided with a circular through hole perpendicular to the slide groove, and the slide plate is provided with a waist-shaped through hole corresponding to the circular through hole. The connecting bolts pass through the circular through hole and the waist-shaped through hole and are fastened to the guide wear-resistant plate, and move in the waist-shaped through hole as the slide plate slides in the slide groove.

5. The floating tunnel joint water-stopping and vibration-damping structure according to claim 4 is characterized in that: The guide wear-resistant plate comprises two guide plates fixed on the shaft rod 2 in upper and lower layers and wear-resistant plates respectively laid on the inner surface of the guide plates, a slide groove is formed between the two wear-resistant plates, and the slide plate is clamped between the two wear-resistant plates.

6. The floating tunnel joint water-stopping and vibration-damping structure according to claim 1 is characterized in that: The multi-layer waterstop structure includes a first waterstop, a second waterstop and a third waterstop which are arranged in sequence from the outside to the inside along the radial direction of the pipe segment. The first waterstop is wavy and made of a fiber composite material, the second waterstop is a rubber waterstop, and the third waterstop is an OMEGA waterstop. A shear member for limiting the relative movement of adjacent pipe segments is provided between the first waterstop and the second waterstop. The shear member consists of a shear protrusion arranged on the end face of one pipe segment and a shear groove arranged on the other end face of the pipe segment and cooperating with the shear protrusion. The shear protrusion extends into the shear groove and there is a gap between the shear protrusion and the shear groove along the radial and axial directions of the pipe segment.

7. The floating tunnel joint water-stopping and vibration-damping structure according to claim 6 is characterized in that: The second water stop comprises a hollow rubber layer with an inner hollow, and rubber plates integrally formed on both sides of the hollow rubber layer and respectively fitted with the end faces of the pipe segment, and both ends of the rubber plates are pressed by L-shaped pressing plates fastened to the end faces of the pipe segment.

8. The floating tunnel joint water-stopping and vibration-damping structure according to claim 6 is characterized in that: The third waterstop is connected to the pipe joint through a connecting assembly, which includes a fastening plate, a pressure plate welded on the fastening plate and pressed on the third waterstop, a pressure strip welded on the fastening plate and abutted against the end face of the pipe joint, and a locking bolt that passes through the fastening plate and the embedded threaded sleeve in the pipe joint to fasten.

9. A method for water stopping and vibration reduction of a suspended tunnel joint, using the water stopping and vibration reduction structure of a suspended tunnel joint according to any one of claims 1 to 8, characterized in that: According to the inner diameter of the pipe segment, the application conditions and load-bearing requirements of the suspended tunnel joint water-stopping and vibration-damping structure, the number of friction dampers, the friction area and the friction force when the friction dampers form the friction motion of the slider are adjusted.

10. The method for water stopping and vibration reduction of a floating tunnel joint according to claim 1, characterized in that: The friction area when adjusting the friction damper to form sliding friction motion refers to the contact area between the adjusting slide plate and the wear-resistant plate, and the friction force when adjusting the friction damper to form friction motion refers to the tightening force of the adjusting connecting bolts.

Images