Pressure-bearing sleeve assembly

Abstract

The utility model belongs to the field of shield construction equipment, and discloses a pressure-bearing sleeve assembly which comprises a sleeve used for shield receiving or launching, the sleeve comprises a plurality of components used for being connected with one another to form the sleeve, the components are arc-shaped, a first connecting part is arranged on the outer wall of the end, connected with the adjacent components, of each component, and a second connecting part is arranged on the outer wall of the end, connected with the adjacent components, of each component. The first connecting parts of every two adjacent components are spaced to form a first mounting groove. The axial connecting assembly is arranged in the first mounting groove to connect two adjacent components, the axial connecting assembly comprises a plurality of first reinforcing connecting components, and the first reinforcing connecting components are provided with second connecting parts connected with the first connecting parts on the two sides of the first mounting groove respectively; wherein the ends of every two adjacent components are connected in a sealed mode. Effective sealing and pressure resistance under the shield construction environment with high water pressure can be achieved, the structural strength of the connecting position between components is improved, and the safety of shield receiving or starting construction is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of tunnel boring machine equipment, and specifically relates to a pressure-bearing sleeve assembly. Background Technology

[0002] With the construction of numerous subway lines, tunnel boring machines (TBMs) are being used more and more frequently. Each launch and reception of a TBM faces the challenge of groundwater. On the one hand, subway stations are being buried deeper and deeper, increasing the water and soil pressure during launch and reception. On the other hand, as national environmental protection requirements become increasingly stringent, stricter regulations are being implemented for groundwater extraction. Therefore, dewatering is generally not permitted during the launch and reception of TBMs, making groundwater control during these periods increasingly difficult.

[0003] Current technologies for launching and receiving tunnel boring machines (TBMs) extensively utilize steel sleeve technology. Steel sleeves are typically divided into 2-meter sections, each separated by a flange. Rubber gaskets or sealing strips are used to seal the spaces between flanges, which are then bolted together. Tightening the bolts compresses the rubber sealing strips or plates to achieve watertightness. Each steel sleeve section is usually divided into two or more pieces, each also separated by flanges and rubber gaskets or strips for sealing. This traditional sealing and load-bearing structure is suitable for applications requiring lower pressures (e.g., below 3 bar). However, when the steel sleeve needs to withstand 4 bar or higher pressures, this flange + gasket (ring) + bolt structure is insufficient for on-site applications. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a sleeve pressure-bearing component to solve the problem that the sleeve structure in the prior art is insufficient to cope with high water pressure construction environment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] On the one hand, a pressure-bearing sleeve assembly is provided, comprising:

[0007] A sleeve for receiving or launching a tunnel boring machine (TBM), the sleeve comprising a plurality of interconnected components forming the sleeve, the components being arc-shaped, each component having a connecting portion on its outer wall at the end connecting to an adjacent component, the connecting portions of two adjacent components being spaced apart to form mounting grooves; and

[0008] An axial connection assembly is provided in a mounting groove to connect two adjacent components. The axial connection assembly includes several reinforcing connection members. Each reinforcing connection member is provided with a connecting portion 2 that connects to the connecting portions 1 on both sides of the mounting groove.

[0009] The ends of two adjacent components are sealed together.

[0010] In a possible implementation, both the first connection part and the second connection part are flange structures.

[0011] In one possible implementation, the reinforcing connecting member one is a groove-shaped member, and the two sides of the groove-shaped member are configured as connecting parts two.

[0012] In a possible implementation, the bottom of the reinforcing connecting member is provided with a connecting hole one, and the end of the component is provided with a connecting hole two corresponding to the connecting hole one. The connecting hole two and the connecting hole one are connected by fasteners.

[0013] And / or, two adjacent reinforcing connecting members are connected by fasteners.

[0014] In a possible implementation, the sleeve is provided with several segments, and the several segments of the sleeve are connected along the axial direction by an annular connecting assembly. The outer wall of the end of the sleeve component that connects to the adjacent sleeve component is provided with a connecting part three. The connecting parts three of two adjacent sleeve components are spaced apart to form a mounting groove two for mounting the annular connecting assembly. The annular connecting assembly includes a reinforcing connecting member two, and the reinforcing connecting member two is provided with a connecting part four that connects the connecting parts three on both sides of the mounting groove two respectively.

[0015] In a possible implementation, the second mounting groove is connected to the first mounting groove, and the second reinforcing connecting member of the annular connecting assembly is connected to the first reinforcing connecting member of the axial connecting assembly to form an outer reinforcing skeleton.

[0016] In a possible implementation, the components of two adjacent sleeves are sealed together at their axial ends;

[0017] The components are welded together to seal the gaps between adjacent components, or a sealing component is provided on the outer wall of the component to cover the gaps between adjacent components and is pressed by the axial connection assembly.

[0018] In a possible implementation, an end cap for closing the sleeve is also included. The outer periphery of the end cap is provided with a connecting portion five distributed circumferentially. The connecting portion five and the connecting portion three of the closed sleeve are spaced apart to form a mounting groove three for mounting an annular connecting assembly. The mounting groove three communicates with a mounting groove one. The annular connecting assembly is disposed in the mounting groove three and the sleeve is connected to the end cap through the annular connecting assembly.

[0019] In possible implementations, the outer wall of the component is provided with a plurality of horizontally and vertically distributed reinforcing ribs, or the outer wall of the sleeve is provided with a support connector, the bottom end of which is provided with a flange connection structure.

[0020] On the other hand, a pressure-bearing sleeve assembly is also provided, comprising:

[0021] A plurality of sleeves for receiving or launching tunnel boring machines (TBMs), the sleeves being connected axially by an annular connecting assembly, each sleeve having a connecting portion three on its outer wall at the end connecting to an adjacent sleeve, and a mounting groove two for mounting the annular connecting assembly being formed between the connecting portions three of two adjacent sleeves; and

[0022] An annular connecting assembly is provided in the mounting groove 2 to connect two adjacent sleeves. The annular connecting assembly includes several reinforcing connecting members 2. Each reinforcing connecting member 2 is provided with a connecting part 4 that connects to the connecting parts 3 on both sides of the mounting groove 2.

[0023] The ends of two adjacent sleeves are sealed together.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The pressure-bearing sleeve assembly of this utility model, by moving the flange connection part back a certain distance on the basis of the traditional sleeve, can form an installation groove between the connection parts of adjacent sleeve components. The axial connection assembly can be connected and fixed through the installation groove. Through the reinforced connection of the axial connection assembly and the sealing connection between the components, effective sealing and pressure resistance can be achieved in the shield tunneling environment with high water pressure. This improves the structural strength at the connection between the components and ensures the safety of shield receiving or launching construction.

[0026] Furthermore, by forming an installation groove between the sleeves to install the annular connecting assembly, the structural strength and sealing of the connection between the sleeves can be improved. Moreover, by connecting it with the transverse axial connecting assembly, an external reinforcing skeleton can be formed on the outside of the sleeve. This skeleton can significantly improve the structural strength and sealing of the sleeve after connection, thus making it more adaptable to the shield tunneling environment with higher water pressure.

[0027] Meanwhile, the end caps are also configured with the same reinforced connection structure, which can further improve the sealing and connection strength of the ends, resulting in better overall structure and sealing. The structural design is reasonable and effective. Attached Figure Description

[0028] Figure 1 This is a cross-sectional schematic diagram of the existing steel sleeve installation structure;

[0029] Figure 2 A front view of the sleeve of a pressure-bearing sleeve assembly;

[0030] Figure 3 This is a partial schematic diagram of the connection point of a pressure-bearing sleeve assembly after the sleeves are connected;

[0031] Figure 4 A perspective view of a reinforcing connection member of a pressure-bearing sleeve assembly;

[0032] Figure 5 A perspective view of a reinforcing connecting member two of a pressure-bearing sleeve assembly;

[0033] Figure 6 This is a cross-sectional view of a pressure-bearing sleeve assembly;

[0034] Figure 7 for Figure 6 An enlarged schematic diagram of section A, showing the welded seal;

[0035] Figure 8 for Figure 7 A schematic diagram of Part A when a sealing gasket is used for sealing;

[0036] Figure 9 This is a schematic diagram of a pressure-bearing sleeve assembly with a supporting connector installed.

[0037] Figure 10 for Figure 8 The diagram shown illustrates the structure during on-site installation.

[0038] Figure 11 This is a schematic diagram illustrating the installation principle of an end cap for a pressure-bearing sleeve assembly.

[0039] Figure 12 This is a schematic diagram of a pressure-bearing sleeve assembly being received by a tunnel boring machine after installation.

[0040] In the diagram: 1-Sleeve; 11-Component; 111-Connecting part three; 112-Connecting part one; 12-Axial connection assembly; 121-Reinforcing connecting component one; 1211-Connecting part two; 1212-Connecting hole one; 13-Annular connecting assembly; 131-Mounting groove two; 132-Reinforcing connecting component two; 1321-Connecting part four; 14-Fastener; 15-Welded seal; 16-Sealing component; 17-Supporting connecting component one; 19-End cap; 191-Connecting part five; 192-Supporting connecting component two; 110-Mounting groove one; 120-Reinforcing rib; 2-Supporting leg one; 3-Transition ring; 4-Embedded steel ring; 5-Shield; 6-Supporting leg two; 7-Steel sleeve. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0042] Please refer to Figure 1As shown, the steel sleeve 7 is typically installed on the pre-embedded steel ring 4 of the station portal via a transition ring 3. The pre-embedded steel ring 4, transition ring 3, and steel sleeve 7 are fixed together by flanges at their ends. The flanges are annular, outwardly extending plate-like connection structures, and are connected by bolts. The steel sleeve 7 is generally divided into 2-meter sections, with flanges installed between each section. After sealing the flanges with rubber gaskets or rubber sealing strips, the flanges are connected by bolts. Tightening the bolts compresses the rubber sealing strips or sealing plates to achieve water-stopping. Each section of the steel sleeve 7 is generally divided into two or more pieces depending on its size, and each piece is also sealed with flanges and rubber gaskets or rubber strips. This traditional sealing and load-bearing structure can meet the requirements when the steel sleeve 7 needs to withstand low pressure (such as below 3 bar). However, when the steel sleeve 7 needs to meet 4 bar or even higher pressure, there will be a large pressure between the steel sleeves 7 and between each component of the steel sleeve 7 at the flange connection. This flange + gasket (ring) + bolt structure is difficult to meet the requirements of field use.

[0043] To address the strength and sealing issues of the connections between each component of sleeve 1, please combine... Figures 2-6 As shown, an embodiment of this application provides a pressure-bearing sleeve assembly, including: a sleeve 1 for receiving or launching a tunnel boring machine 5, the sleeve 1 including a plurality of components 11 for interconnecting to form the sleeve 1, the components 11 being arc-shaped, the outer wall of the end of the component 11 connected to an adjacent component 11 having a connecting portion 112, the connecting portions 112 of two adjacent components 11 being spaced apart to form a mounting groove 110; and an axial connection assembly 12 disposed in the mounting groove 110 to connect two adjacent components 11, the axial connection assembly 12 including a plurality of reinforcing connecting members 121, the reinforcing connecting members 121 having connecting portions 1211 respectively connecting the connecting portions 112 on both sides of the mounting groove 110; wherein, the ends of two adjacent components 11 are sealed together.

[0044] The sleeve 1 can be used for receiving or launching the tunnel boring machine 5. It includes several interconnected components 11, each of which is arc-shaped and can be connected to form an annular sleeve 1. Each component 11 of the sleeve 1 has a connecting portion 112 for connecting adjacent components 11, which is located on the outer wall of the end in the circumferential direction and at a certain distance from the end face. This creates a gap between adjacent components 11 when they are connected, and this gap can serve as a mounting groove 110 for installing the axial connection assembly 12. After a section of the sleeve 1 is connected, several mounting grooves 110 parallel to the axial direction can be formed in the axial direction. The axial connection assembly 12 is installed in the mounting groove 110. It mainly includes a reinforcing connection member 121. One reinforcing connection member 121 can be provided as needed, its length matching the length of the mounting groove 110. Multiple reinforcing connection members 121 can also be provided, with their combined length equal to the length of the mounting groove 110. Within the mounting groove, the reinforcing connection member 121 connects to the connecting parts 112 of the two side components 11 via its connecting part 1211. After connection, the connection points of each component 11 of the sleeve 1 become more robust and stronger, better suited for the high water pressure construction environment of the shield tunneling machine 5 for receiving or launching. Simultaneously, the sealing effect is further improved through the sealing connection between the components 11. There are various sealing connection methods, including traditional sealing connections such as using sealing gaskets, and welding seals. Through the cooperation of external reinforcing members and sealing, the connection strength and sealing performance between each component 11 of the sleeve 1 can be significantly improved, making it more suitable for the high water pressure construction environment of the shield tunneling machine 5.

[0045] Through the above technical solution, based on the traditional sleeve 1, the flange connection part is moved back a certain distance, and an installation groove 110 can be formed between the connection part 112 of the adjacent sleeve 1 component 11. The axial connection assembly 12 can be connected and fixed through the installation groove 110. Through the reinforced connection of the axial connection assembly 12 and the sealing connection between the components 11, effective sealing and pressure resistance can be achieved in the shield tunnel 5 construction environment with high water pressure, which improves the structural strength at the connection between the components 11 and ensures the safety of the shield tunnel 5 receiving or launching construction.

[0046] In one implementation, please continue to refer to Figures 2-7 As shown, both the first connecting part 112 and the second connecting part 1211 are flange structures.

[0047] In this way, by using a flange structure as the connection structure through the first connection part 112 and the second connection part 1211, the common connection method is retained. The only difference is that the flange structure is moved back a certain distance. This makes it easier to process the first connection part 112 and the second connection part 1211 when making the sleeve 1, without adding or more processing steps. It is more practical, convenient and the design is more reasonable.

[0048] Please refer to Figure 2 and Figure 3 As shown, in a preferred embodiment of the reinforcing connecting member 121, the reinforcing connecting member 121 is a groove-shaped member, and the two sides of the groove-shaped member are configured as connecting portions 1211.

[0049] The reinforcing connecting member 121 with its channel-shaped structure is lightweight, making it easier to move and install. Furthermore, the channel-shaped structure allows the side walls to function as flanges, facilitating connection with the connecting part 112. In practice, the reinforcing connecting member 121 and the connecting part 112 are connected by bolts, which pass through the connecting holes on both the connecting part 112 and the connecting part 1211 for secure fastening.

[0050] Based on this, combined Figure 2 , Figure 3 and Figure 7 As shown, to further improve the connection strength between the components 11 of the sleeve 1, the bottom of the reinforcing connecting member 121 is provided with a connecting hole 1212, and the end of the component 11 is provided with a connecting hole 2 corresponding to the connecting hole 1212. The connecting hole 2 and the connecting hole 1212 are connected by a fastener 14. By simultaneously connecting the bottom of the reinforcing connecting member 121 to the component 11, the connection strength between the components 11 can be further improved.

[0051] In the specific implementation process, the second connecting hole on the component 11 is a blind hole, which can avoid the problem of easy water leakage that occurs when using through holes. The fastener 14 can be connected by bolts.

[0052] Meanwhile, in order to better form an integrated skeleton structure, two adjacent reinforcing connecting components 121 are connected by fasteners. This can improve the strength of the outer reinforcing skeleton and better resist high water pressure conditions.

[0053] To achieve a reinforced connection between sleeves 1 and 1, please refer to... Figure 2 and Figure 3As shown in the embodiment of this application, the sleeve 1 is provided with several segments, and the several segments of the sleeve 1 are connected along the axial direction by an annular connecting assembly 13. The outer wall of the component 11 of the sleeve 1 connected to the adjacent sleeve 1 component 11 is provided with a connecting part three 111. The connecting parts three 111 of two adjacent sleeve 1 components 11 are spaced apart to form a mounting groove two 131 for mounting the annular connecting assembly 13. The annular connecting assembly 13 includes a reinforcing connecting member two 132. The reinforcing connecting member two 132 is provided with a connecting part four 1321 that connects the connecting parts three on both sides of the mounting groove two 131 respectively.

[0054] The outer wall of the axial end of the sleeve 1 component 11 is also provided with a connecting portion 3 111. The connecting portions 3 111 of two adjacent sleeve 1 components 11 are spaced apart, that is, they are recessed a certain distance along the axial direction. The gap between them can serve as a mounting groove 2 131. The annular connecting component 13 can be installed in the mounting groove 2 131, and a reinforced connection can be made through the annular connecting component 13. The annular connecting component 13 preferably adopts a structure similar to that of the axial connecting component 12, so as to achieve a better reinforcement effect. Since the annular connecting component 13 is used in the circumferential direction of the sleeve and the axial connecting component 12 is used in the axial or transverse direction of the sleeve 1, the bottoms of the reinforcing connecting component 121 and the reinforcing connecting component 2 132 are different in order to fit against the outer wall of the sleeve 1. Specifically, the bottom of the reinforcing connecting component 121 is arc-shaped in the width direction, and the bottom of the reinforcing connecting component 2 132 is arc-shaped in the length direction.

[0055] Furthermore, the second mounting groove 131 is connected to the first mounting groove 110, and the reinforcing connecting member 121 of the annular connecting assembly 13 is connected to the reinforcing connecting member 132 of the axial connecting assembly 12 to form an outer reinforcing skeleton.

[0056] In this way, the connection between the first mounting slot 110 and the second mounting slot 131 facilitates the connection between the axial connection assembly 12 and the annular connection assembly 13, thereby forming an integrated outer reinforcing frame. This outer reinforcing frame can better improve the connection stability between the components 11 and between the sleeve 1, and also improve the overall reliability of the sleeve 1 during the shield tunneling 5 receiving or launching process.

[0057] Preferably, the components 11 of two adjacent sleeves 1 are sealed together at their axial ends, which improves the sealing performance between the sleeves 1.

[0058] In some implementations, combined Figure 7 and Figure 8As shown, the sealing connection can adopt different sealing methods according to requirements. For example, for construction environments with high water pressure, the components 11 are sealed by welding, and a welded seal 15 is formed by welding. The stability and reliability of the welded seal are better than traditional seals, so welding is more suitable. Furthermore, welding allows the sleeve 1 to form a whole, thus having overall sealing capability and stronger pressure resistance. For construction environments with lower water pressure, a sealing component 16 can be provided on the outer wall of the component 11 to cover the gap between adjacent components 11 and be held by the axial connecting component 12 or the annular connecting component 13. The sealing component 16 can seal the gap under the pressure of the axial connecting component 12 or the annular connecting component 13, achieving a better sealing effect. Of course, the sealing structure is not limited to the above sealing forms, and other sealing structures can also be used.

[0059] Specifically, when using welded sealing, the welding between components 11 can be carried out on the inside of the sleeve 1 at the bottom area. This facilitates the welding operation and also makes it easier to cut the weld after construction and separate and remove the sleeve 1. Welding in other areas can be carried out on the outside.

[0060] Please refer to Figure 11 As shown, in the embodiments of this application, an end cap 19 for closing the sleeve 1 may also be included. The outer periphery of the end cap 19 is provided with a connecting portion five 191 distributed circumferentially. The connecting portion five 191 and the connecting portion three 111 of the closed sleeve 1 are spaced apart to form a mounting groove three for mounting an annular connecting assembly 13. The mounting groove three communicates with the mounting groove one 110. The annular connecting assembly 13 is disposed in the mounting groove three and the sleeve 1 is connected to the end cap 19 through the annular connecting assembly 13.

[0061] The end cap 19 is used to seal the end of the sleeve 1 furthest from the tunnel entrance after each sleeve 1 section is installed, so as to form a space inside that can be filled with media such as sand for the shield tunnel 5 to receive the tunnel. Since the sleeve 1 has a connecting part 111 at its axial upper end for forming an installation groove, a connecting part 191 is also provided on the end cap 19 for adaptation. The connecting part 191 and the end face of the end cap 19 are axially spaced apart, so that when the end cap 19 is connected to the sleeve 1, it can form an installation groove with the connecting part 111 on the sleeve 1, and be connected and fixed by the annular connecting assembly 13 in the installation groove. This technical solution allows the end cap 19 and the sleeve 1 to better withstand pressure in a high-pressure construction environment. The annular connecting assembly 13 is also connected to the axial connecting assembly 12.

[0062] A sealing connection is also made between the end cap 19 and the sleeve 1 to improve the sealing performance of the connection. Furthermore, as... Figure 11As shown, in order to facilitate the support of the end cover 19 during assembly, a second support connector 192 can be provided on the end cover 19. The second support connector 192 can be connected to the second support leg 6 set on the station ground through a flange.

[0063] To ensure that sleeve 1 has better pressure resistance in areas other than the connection points, such as Figure 1 As shown, the outer wall of the component 11 is provided with a plurality of horizontally and vertically distributed reinforcing ribs 120. The stability of the connection can be further improved by the horizontally and vertically distributed reinforcing ribs 120 on the outer wall of the sleeve 1.

[0064] In the specific implementation process, combined with Figure 9 and Figure 10 As shown, in order to reduce the weight of the large-diameter sleeve 1, the bottom area of ​​the sleeve 1 was optimized, the radial dimension of the sleeve 1 base was shortened, and support connectors with flanges 17 were added to both sides of the sleeve 1. After the sleeve 1 is installed, the support connectors 17 are bolted to the support legs 2 with flanges. The other end of the support legs 2 is fixed to the bottom plate of the station. This greatly reduces the weight of the steel sleeve while meeting the rigidity requirements of the sleeve 1, and also facilitates assembly with external supports such as the support legs 2.

[0065] If the length of each sleeve 1 is shortened to, for example, 1m or less, the sleeve 1 does not need to be divided into multiple pieces in the circumferential direction. In this case, the main pressure is on the connection between the sleeves 1.

[0066] Therefore, in an application scenario where the sleeve 1 only needs to be reinforced between the sleeves 1, the embodiments of this application also provide a pressure-bearing sleeve 1 assembly, including: a plurality of sleeves 1 for receiving or launching the shield tunnel 5, the plurality of sleeves 1 being connected axially by an annular connecting assembly 13, the sleeve 1 having a connecting portion three 111 on the outer wall of the end connected to the adjacent sleeve 1, and a mounting groove two 131 for mounting the annular connecting assembly 13 being formed at intervals between the connecting portions three 111 of two adjacent sleeves 1; and an annular connecting assembly 13 provided in the mounting groove two 131 to connect two adjacent sleeves 1, the annular connecting assembly 13 including a plurality of reinforcing connecting members two 132, the reinforcing connecting members two 132 having connecting portions four 1321 respectively connecting the connecting portions three 111 on both sides of the mounting groove two 131; wherein, the ends of two adjacent sleeves 1 are sealed together.

[0067] The above technical solution can improve the strength and sealing of the connection between sleeves 1.

[0068] An embodiment of this application provides a pressure-bearing sleeve 1 assembly that can be used for receiving and launching a tunnel boring machine (TBM) 5, combined with... Figure 11 and Figure 12As shown below, the use of receiving is taken as an example to illustrate the use of this application.

[0069] When used in construction environments where the sleeve 1 is subjected to a force of 3 bar or more, the method of use is as follows:

[0070] 1. Assemble the sleeve 1 to the required length in the tunnel axial direction as needed, and connect it to the pre-embedded steel ring 4 on the tunnel portal through the transition ring 3. Assemble and connect multiple sleeve 1 sections until the total length of the sleeve meets the length required for shield receiving, such as a total length of 12 meters for the steel sleeve. Then install the end cap 19. During this process, the axial connection component 12 and the circumferential connection component 13 need to be installed so that the sleeve 1 and the end cap 19 can be initially assembled into a complete steel sleeve for shield receiving.

[0071] 2. After installing the end cap 19, starting from the end of the sleeve 1 closest to the opening, remove the reinforcing connecting member 121 and the reinforcing connecting member 132 between the sleeves 1 in the axial direction in sequence. Then weld the edges of the components 11 of the two adjacent sleeves 1 and the sleeves 1 together. After welding, reinstall the reinforcing connecting member 121 and the reinforcing connecting member 132 and fix them. This completes the welding between all the sleeve components 11 in the axial direction and installs the reinforcing connecting member 121 and the reinforcing connecting member 132.

[0072] In the bottom area between sleeves 1 and 1, a sealing method using welding from the inside of the sleeves is adopted, which is more convenient. If welding from the outside, a large space needs to be reserved in the bottom area. After the above two steps are completed, the entire sleeve and the pre-embedded steel ring of the portal hole have formed a complete closed cavity.

[0073] 3. Install a reaction support system (not shown in the figure) to support the pressure-bearing sleeve assembly. This system mainly includes a reaction frame for supporting the end cap.

[0074] 4. Perform a water filling and pressure test on the assembled sleeve 1, and repair any parts that do not meet the pressure requirements until the pressure requirements are met.

[0075] 5. After backfilling the sleeve 1 with materials such as sand, mortar, foamed concrete or shield tunneling debris, the receiving work of shield 5 can begin.

[0076] 6. The tunnel boring machine (TBM) passes through the station structural wall until it completely enters the pressure sleeve assembly. After the shield tail leaves the tunnel portal, mortar can be injected into the gap between the segments and the pre-embedded steel rings through the segment grouting holes. After the grout has completely solidified, it blocks the passage for mud and water outside the station to enter the station. At this point, the sleeve support, sleeve, and TBM can be removed. The TBM receiving process is now complete.

[0077] When used in construction environments where the sleeve 1 is subjected to a force of less than 3 bar, its usage method is as follows:

[0078] 1. Assemble the sleeve 1 to the required length in the tunnel axial direction as needed, and connect it to the pre-embedded steel ring 4 on the tunnel portal through the transition ring 3. First assemble the first section of the sleeve 1, and connect the first section of the sleeve 1 into a ring using the axial connection component 12. Before installing the axial connection component 12, the rubber sealing gasket 16 needs to be pressed under the axial connection component 12, and then the bolts at the bottom and around the axial connection component are tightened to ensure the sealing performance of the joint of the first section of the sleeve 1 in the circumferential direction.

[0079] 2. Connect the first sleeve 1 and the transition ring 3 with the annular connecting assembly 13. Before installing the annular connecting assembly 13, a sealing component 16, such as a rubber sealing gasket, needs to be pressed under the annular connecting assembly 13 to ensure the sealing performance of the joint between the first sleeve 1 and the transition ring 3.

[0080] In the bottom area between sleeve 1 and transition ring 3, a sealing method is adopted by welding from the inside of the sleeve, which is more convenient. If welding is done from the outside, a large space needs to be reserved in the bottom area.

[0081] 3. Assemble the second and third sections of sleeve 1 sequentially until the total length of sleeve 1 meets the requirements for shield tunneling reception. For example, the total length of the steel sleeve is 12 meters.

[0082] 4. Install end cap 19.

[0083] 5. Install the sealing component 16 between the end cap 19 and the sleeve 1 and the annular connecting assembly 13.

[0084] 6. The reaction support system for the installation sleeve (not shown in the figure).

[0085] 7. Perform a water filling and pressure test on the assembled sleeve 1, and repair any parts that do not meet the pressure requirements until the pressure requirements are met.

[0086] 8. After backfilling the sleeve 1 with materials such as sand, mortar, foam concrete or shield tunneling debris, the receiving work of shield 5 can begin.

[0087] 9. The shield tunnel passes through the station structural wall until it is completely inside the sleeve. After the shield tail leaves the tunnel entrance, mortar can be injected into the gap between the segments and the pre-embedded steel rings through the segment grouting holes. After the grout has completely solidified, it blocks the passage for mud and water outside the station to enter the station. At this time, the support of sleeve 1, sleeve 1 and shield tunnel can be removed. At this point, the shield tunneling reception is completed.

[0088] It should be noted that during the initial assembly process before welding for sealing under high water pressure conditions, each sleeve 1 can be equipped with axial connecting components 12 at both ends or in the middle, while other connecting parts do not need to be installed. This reduces the workload of disassembly before welding and also facilitates the initial fixing during the assembly process. Similarly, the annular connecting component 13 can also be partially installed for initial fixing.

[0089] The embodiments in this application only illustrate the receiving case. In other implementation scenarios, it can also be used in conjunction with the company's sleeve launching patent technology ZL202320780143.3, which is a sleeve assembly with adjustable spring steel plate brush pressing force and a shield launching system, and ZL20222 23916099, which is a steel sleeve for shield launching and a shield launching device. These technologies can also be fully applied to the launching of shields and can meet the requirements of shield launching for projects with high water pressure and large burial depth.

[0090] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A pressure-bearing sleeve assembly, characterized in that, include: A sleeve for receiving or launching a tunnel boring machine (TBM), the sleeve comprising a plurality of interconnected components forming the sleeve, the components being arc-shaped, each component having a connecting portion on its outer wall at the end connecting to an adjacent component, the connecting portions of two adjacent components being spaced apart to form mounting grooves; and An axial connection assembly is provided in a mounting groove to connect two adjacent components. The axial connection assembly includes several reinforcing connection members. Each reinforcing connection member is provided with a connecting portion 2 that connects to the connecting portions 1 on both sides of the mounting groove. The ends of two adjacent components are sealed together.

2. The pressure-bearing sleeve assembly as described in claim 1, characterized in that, Both the first connecting part and the second connecting part are flange structures.

3. The pressure-bearing sleeve assembly as described in claim 1, characterized in that, The first reinforcing connecting member is a groove-shaped member, and the two sides of the groove-shaped member are configured as connecting parts.

4. A pressure-bearing sleeve assembly as described in claim 2, characterized in that, The bottom of the reinforcing connecting member is provided with a connecting hole one, and the end of the component is provided with a connecting hole two corresponding to the connecting hole one. The connecting hole two and the connecting hole one are connected by fasteners. And / or, two adjacent reinforcing connecting members are connected by fasteners.

5. A pressure-bearing sleeve assembly as described in claim 1, characterized in that, The sleeve is provided with several sections, and the several sections of the sleeve are connected along the axial direction by an annular connecting assembly. The outer wall of the end of the sleeve component that is connected to the adjacent sleeve component is provided with a connecting part three. The connecting parts three of two adjacent sleeve components are spaced apart to form a mounting groove two for mounting the annular connecting assembly. The annular connecting assembly includes a reinforcing connecting member two. The reinforcing connecting member two is provided with a connecting part four that connects the connecting parts three on both sides of the mounting groove two respectively.

6. A pressure-bearing sleeve assembly as described in claim 5, characterized in that, The second mounting groove is connected to the first mounting groove, and the second reinforcing connecting member of the annular connecting assembly is connected to the first reinforcing connecting member of the axial connecting assembly to form an outer reinforcing skeleton.

7. A pressure-bearing sleeve assembly as described in claim 5, characterized in that, The components of two adjacent sleeves are sealed together at their axial ends; The components are welded together to seal the gaps between them, or a sealing component is provided on the outer wall of the component to cover the gaps between adjacent components and is held by an axial connection component or annular connection component.

8. A pressure-bearing sleeve assembly as described in claim 5, characterized in that, It also includes an end cap for sealing the sleeve. The outer periphery of the end cap is provided with a connecting portion five distributed circumferentially. The connecting portion five and the connecting portion three of the sleeve being sealed form a mounting groove three for mounting an annular connecting assembly. The mounting groove three communicates with a mounting groove one. The annular connecting assembly is disposed in the mounting groove three and the sleeve and the end cap are connected through the annular connecting assembly.

9. A pressure-bearing sleeve assembly as described in claim 1, characterized in that, The outer wall of the component is provided with several horizontally and vertically distributed reinforcing ribs, or the outer wall of the sleeve is provided with a support connector, the bottom end of which is provided with a flange connection structure.

10. A pressure-bearing sleeve assembly, characterized in that, include: A plurality of sleeves for receiving or launching tunnel boring machines (TBMs), the sleeves being connected axially by an annular connecting assembly, each sleeve having a connecting portion three on its outer wall at the end connecting to an adjacent sleeve, and a mounting groove two for mounting the annular connecting assembly being formed between the connecting portions three of two adjacent sleeves; and An annular connecting assembly is provided in the mounting groove 2 to connect two adjacent sleeves. The annular connecting assembly includes several reinforcing connecting members 2. Each reinforcing connecting member 2 is provided with a connecting part 4 that connects to the connecting parts 3 on both sides of the mounting groove 2. The ends of two adjacent sleeves are sealed together.

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