Assembly component for the interior of a shield tunnel and method of assembly

Abstract

The application provides an assembly component and an assembling method for a shield tunnel, and the assembly component comprises: a prefabricated bottom bin, the prefabricated bottom bin has a first connecting surface and a second connecting surface; a bag, the bag is connected with the first connecting surface, and the bag is used for containing flexible grouting material; a prefabricated partition wall, the prefabricated partition wall is detachably connected with the second connecting surface; after grouting, part of the bag extends to the outside of the first connecting surface and abuts against the inner wall of the shield tunnel, so that the first connecting surface has a preset gap with the inner wall of the shield tunnel, the elastic modulus of the hardened flexible grouting material is E1, the elastic modulus of the prefabricated bottom bin is E2, E1<=E2, and the second connecting surface of the prefabricated bottom bin is connected with the top of the shield tunnel through the prefabricated partition wall. In the above scheme, the flexible grouting material in the bag deforms first than the prefabricated bottom bin, so as to absorb part of the seismic deformation and reduce the seismic deformation transmitted to the prefabricated bottom bin, and the assembly component has the ability to absorb the seismic deformation.

Description

Technical Field

[0001] This invention relates to the technical field of prefabricated building structures, and more specifically, to an assembly component and assembly method for use inside a shield tunnel. Background Technology

[0002] Currently, the main structures of some underground structures, such as shield tunnels and subway stations, can be constructed using fully prefabricated assembly. However, the internal structures and assembled components are mainly connected through cast-in-place concrete or masonry structures. The seismic response mechanisms of underground structures differ from those of above-ground structures. The seismic response of above-ground structures mainly depends on the dynamic characteristics of the structure itself, while the dynamic characteristics of underground structures are suppressed, and their seismic response mainly depends on the deformation of the surrounding soil.

[0003] The assembly components inside the shield tunnel are connected to the shield tunnel through cast-in-place concrete or masonry structures. The seismic response of the assembly components is constrained by the shield tunnel. When the shield tunnel undergoes seismic deformation, it can directly affect the assembly components.

[0004] There is currently no effective solution to the problem of how to reduce the impact of shield tunnels on the seismic response of assembled components. Summary of the Invention

[0005] The main objective of this invention is to provide an assembly component and assembly method for use inside a shield tunnel, in order to solve the technical problem of how to reduce the impact of the shield tunnel on the seismic response of the assembly component.

[0006] To achieve the above objectives, according to one aspect of the present invention, an assembly assembly for the interior of a shield tunnel is provided, comprising: a prefabricated base chamber having a first connecting surface and a second connecting surface; a bladder connected to the first connecting surface and used to hold flexible grouting material; a prefabricated intermediate partition wall detachably connected to the second connecting surface; a portion of the grouting material extending beyond the first connecting surface and abutting against the inner wall of the shield tunnel, such that the first connecting surface and the inner wall of the shield tunnel have a predetermined gap, the elastic modulus of the hardened flexible grouting material being E1, the elastic modulus of the prefabricated base chamber being E2, E1≤E2, and the second connecting surface of the prefabricated base chamber being connected to the top of the shield tunnel via the prefabricated intermediate partition wall.

[0007] Furthermore, there are multiple bladders, which are distributed at intervals on the first connecting surface. The stiffness of the hardened flexible grouting material inside each bladder is different.

[0008] Furthermore, the first connecting surface is an arc-shaped surface, and a first bladder is provided at the lowest point of the first connecting surface. The stiffness of the hardened flexible grout in the first bladder is EI1, and the stiffness of the hardened flexible grout in the other bladders is EI2, where EI1 > EI2.

[0009] Furthermore, the first connecting surface is provided with a first groove, and the pouch is connected to the inner wall of the first groove.

[0010] Furthermore, the second connecting surface is provided with a second groove, which extends along the length of the prefabricated bottom silo. The first end of the prefabricated intermediate partition wall is inserted into the second groove. The prefabricated structure also includes: a clamp for connecting to the top of the shield tunnel. The clamp has a clamping space and a clamping member. The clamping space extends along the length of the prefabricated bottom silo and is used to accommodate the second end of the prefabricated intermediate partition wall. The clamping member has a locking position that extends into the clamping space to abut against the side wall of the prefabricated intermediate partition wall, and an unlocking position that is located outside the clamping space to disengage from the side wall of the prefabricated intermediate partition wall.

[0011] Furthermore, both ends of the prefabricated partition wall are wrapped with flexible material. The first end of the prefabricated partition wall abuts against the first connecting surface through the flexible material, and the second end of the prefabricated partition wall abuts against the clamping member through the flexible material.

[0012] Furthermore, the first connecting surface is an arc-shaped surface, the second connecting surface is a plane, and an avoidance tangent is provided between the first connecting surface and the second connecting surface.

[0013] According to another aspect of the present invention, a method for assembling an assembly component is provided. The assembly component is the aforementioned assembly component. The assembly method is used to assemble the assembly component into the interior of a shield tunnel. The assembly method includes: placing a bag on the first connecting surface of a prefabricated bottom chamber; moving the prefabricated bottom chamber into the shield tunnel and adjusting the position of the prefabricated bottom chamber so that there is a preset gap between the first connecting surface and the inner wall of the shield tunnel; injecting flexible grout into the bag so that the bag abuts against the inner wall of the shield tunnel; and connecting a prefabricated intermediate partition wall between the second connecting surface of the prefabricated bottom chamber and the top of the shield tunnel.

[0014] Furthermore, the prefabricated base silo is moved into the shield tunnel, and the position of the prefabricated base silo is adjusted so that there is a preset gap between the first connecting surface and the inner wall of the shield tunnel. This includes: connecting the leveling bolt to the bottom of the prefabricated base silo; and adjusting the length of the leveling bolt so that the leveling bolt abuts against the inner wall of the shield tunnel.

[0015] Furthermore, the assembly method also includes: after the flexible grout inside the bag has hardened, removing the leveling bolts.

[0016] Applying the technical solution of this invention, the grouted portion of the bladder abuts against the inner wall of the shield tunnel. The first connecting surface has a preset gap with the inner wall of the shield tunnel. That is, the precast bottom chamber is in flexible contact with the inner wall of the shield tunnel through multiple equivalent points or multiple equivalent lines. A deformation space is formed between adjacent equivalent points or multiple equivalent lines. The elastic modulus of the hardened flexible grout is less than or equal to the elastic modulus of the precast bottom chamber. Under seismic action, the flexible grout in the bladder deforms first than the precast bottom chamber to absorb part of the seismic deformation, thereby reducing the seismic deformation transmitted to the precast bottom chamber. The assembly has the ability to absorb seismic deformation, that is, it reduces the influence of the shield tunnel constraint on the seismic response of the above-mentioned assembly and improves the seismic resistance of the assembly. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of an embodiment of an assembly for use in a shield tunnel according to the present invention is shown;

[0019] Figure 2 This diagram illustrates the positional relationship between the prefabricated bottom chamber before grouting and the shield tunnel in this invention.

[0020] Figure 3 It shows Figure 2 Enlarged view of region A in the middle;

[0021] Figure 4 This diagram illustrates the positional relationship between the precast bottom chamber after grouting and the shield tunnel in this invention.

[0022] Figure 5 It shows Figure 4 Enlarged view of region B in the middle;

[0023] Figure 6 This diagram illustrates the positional relationship between the clamp and the prefabricated partition wall in this invention.

[0024] Figure 7 A flowchart illustrating the assembly method of the assembly components used in shield tunnels according to the present invention is shown.

[0025] The above figures include the following reference numerals:

[0026] 1. Prefabricated base; 11. First connecting surface; 12. Second connecting surface; 13. First groove; 14. Second groove; 15. Avoidance section;

[0027] 2. Bag; 21. Flexible grouting material;

[0028] 3. Precast partition walls;

[0029] 4. Shield tunnel; 41. Shield segment;

[0030] 5. Fixture; 51. Connecting plate; 52. Clamping space; 53. Anchoring element;

[0031] 6. Leveling bolts. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or groups thereof.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0036] Example 1

[0037] Combination Figures 1 to 6As shown, according to a specific embodiment of this application, an assembly assembly for use inside a shield tunnel 4 is provided.

[0038] like Figure 1 As shown, the assembly components used inside the shield tunnel 4 include: a prefabricated bottom chamber 1, a sac 2, and a prefabricated central partition wall 3. The prefabricated bottom chamber 1 has a first connecting surface 11 and a second connecting surface 12. The sac 2 is connected to the first connecting surface 11 and is used to hold flexible grouting material 21. The prefabricated central partition wall 3 is detachably connected to the second connecting surface 12. After grouting, a portion of the sac 2 extends beyond the first connecting surface 11 and abuts against the inner wall of the shield tunnel 4, so that the first connecting surface 11 and the inner wall of the shield tunnel 4 have a predetermined gap. The elastic modulus of the hardened flexible grouting material 21 is E1, and the elastic modulus of the prefabricated bottom chamber 1 is E2, where E1 ≤ E2. The second connecting surface 12 of the prefabricated bottom chamber 1 is connected to the top of the shield tunnel 4 through the prefabricated central partition wall 3.

[0039] In the embodiments of this application, the grouted portion of the bladder 2 abuts against the inner wall of the shield tunnel 4, and the first connecting surface 11 has a preset gap with the inner wall of the shield tunnel 4. That is, the precast bottom chamber 1 is in flexible contact with the inner wall of the shield tunnel 4 through multiple equivalent points or multiple equivalent lines, and a deformation space is formed between adjacent equivalent points. The elastic modulus of the hardened flexible grout 21 is less than or equal to the elastic modulus of the precast bottom chamber 1. Under seismic action, the flexible grout 21 in the bladder 2 deforms first than the precast bottom chamber 1 to absorb part of the seismic deformation, thereby reducing the seismic deformation transmitted to the precast bottom chamber 1. The assembly has the ability to absorb seismic deformation, that is, it reduces the influence of the shield tunnel 4 constraint on the seismic response of the above-mentioned assembly and improves the seismic resistance of the assembly.

[0040] Understandably, the precast base 1 is a precast reinforced concrete component, which can be a single precast component or assembled from multiple precast components. The bladder 2 is a lightweight, thin-walled bladder. The bladder 2 is used in conjunction with the flexible grouting material 21. After grouting, the bladder 2 is sealed to prevent leakage and can withstand strong grouting pressure. During grouting, the flexible grouting material 21 is a fluid. After standing for a certain period, the flexible grouting material 21 gradually hardens and does not shrink after hardening. The hardened flexible grouting material 21 is in the form of dots or strips. The flexible grouting material 21 can be made of materials such as rubber concrete or modified polymers.

[0041] It should be noted that, as Figure 3 , Figure 5 As shown, the inner wall of the shield tunnel 4 is spliced ​​together from multiple shield segments 41. There is a splicing misalignment between adjacent shield segments 41, that is, there is a position difference between shield segments 41. During grouting, the flexible grouting material 21 is a fluid. The liquid flexible grouting material 21 can adapt to the splicing misalignment and make up for the position difference so that the bag 2 and the segment can be seamlessly connected.

[0042] Furthermore, there are multiple sacs 2, which are spaced apart on the first connecting surface 11. The stiffness of the hardened flexible grout 21 inside each sac 2 is different. In the embodiments of this application, such as Figure 1 , Figure 2 , Figure 4 As shown, there are 5 bags 2, which are spaced apart circumferentially along the first connecting surface 11.

[0043] It should be noted that, in addition to absorbing seismic deformation, the hardened flexible grout 21 also needs to support the precast base 1. The seismic force affects different points on the first connection surface 11 differently, meaning that the shear force on the hardened flexible grout 21 is different at each point. This results in different stiffnesses of the hardened flexible grout 21 at each point, to prevent the grouting bag 2 at a certain point from breaking before the bags 2 at other locations.

[0044] Furthermore, the first connecting surface 11 is an arc-shaped surface, and a first bladder 2 is provided at the lowest point of the first connecting surface 11. The stiffness of the hardened flexible grout 21 in the first bladder 2 is EI1, and the stiffness of the hardened flexible grout 21 in the other bladders 2 (excluding the first bladder 2) is EI2, where EI1 > EI2.

[0045] It should be noted that horizontal seismic action has the greatest impact on the seismic response of the assembled components. The first bag 2 at the lowest point of the first connecting surface 11 provides vertical support for the prefabricated bottom chamber 1. The shear force on the first bag 2 is greater than that on the bag 2 at other locations. Therefore, the stiffness EI1 is greater than the stiffness EI2, so as to prevent the first bag 2 after grouting from breaking before the bag 2 at other locations.

[0046] Furthermore, the first connecting surface 11 is provided with a first groove 13, and the grout bag 2 is connected to the inner wall of the first groove 13. The first groove 13 is provided to limit the position of the grout bag 2 after grouting, so as to limit the contact area between the grout bag 2 and the inner wall of the shield tunnel 4. After grouting, part of the grout bag 2 needs to extend outward from the first groove 13, that is, the height of the grout bag 2 after grouting is greater than the depth of the first groove 13, so that a preset gap is formed between the prefabricated bottom chamber 1 and the inner wall of the shield tunnel 4.

[0047] Furthermore, the second connecting surface 12 is provided with a second groove 14, which extends along the length of the prefabricated base 1. The first end of the prefabricated intermediate partition wall 3 is inserted into the second groove 14. The assembled structure also includes a clamp 5, which is used to connect with the top of the shield tunnel 4. The clamp 5 has a clamping space 52 and a clamping member 53. The clamping space 52 extends along the length of the prefabricated base 1 and is used to accommodate the second end of the prefabricated intermediate partition wall 3. The clamping member 53 has a locking position that extends into the clamping space 52 to abut against the side wall of the prefabricated intermediate partition wall 3, and an unlocking position that is located outside the clamping space 52 to disengage from the side wall of the prefabricated intermediate partition wall 3.

[0048] In the embodiments of this application, such as Figure 6 As shown, the clamp 5 includes two connecting plates 51 and two clamping members 53. The connecting plates 51 are L-shaped plates, and both connecting plates 51 are connected to the top wall of the shield tunnel 4. The two connecting plates 51 are spaced apart, and the two connecting plates 51 and the top wall of the shield tunnel 4 together enclose a clamping space 52. Specifically, the connecting plates 51 have a first support side and a second support side that are vertically arranged. The first support side of the connecting plate 51 is connected to the top wall of the shield tunnel 4, and the clamping members 53 are threadedly connected to the first support side of the connecting plate 51. During the splicing process, the prefabricated partition wall 3 is simultaneously inserted into the second groove 14 and the clamping space 52, and the clamping members 53 are screwed inward to abut against the side wall of the prefabricated partition wall 3, that is, both sides of the prefabricated partition wall 3 abut against the clamping members 53.

[0049] As an alternative implementation, the clamp 5 includes two connecting plates 51 and a clamping member 53. The connecting plates 51 are L-shaped plates, and both connecting plates 51 are connected to the top wall of the shield tunnel 4. The two connecting plates 51 are spaced apart, and the two connecting plates 51 and the top wall of the shield tunnel 4 together enclose a clamping space 52. Specifically, the connecting plates 51 have a first support side and a second support side that are vertically arranged. The first support side of the connecting plate 51 is connected to the top wall of the shield tunnel 4, and the clamping member 53 is threadedly connected to the first support side of one of the connecting plates 51. During the splicing process, the prefabricated partition wall 3 is simultaneously inserted into the second groove 14 and the clamping space 52, and the clamping member 53 is screwed inward to abut against the side wall of the prefabricated partition wall 3. One side of the prefabricated partition wall 3 abuts against the clamping member 53, and the other side of the prefabricated partition wall 3 abuts against the connected second support side.

[0050] It should be noted that there is a gap between the second end of the prefabricated partition wall 3 and the top wall of the shield tunnel 4. The second groove 14 and the clamp 5 provide left and right abutment and limit the prefabricated partition wall 3. In the length and height directions of the prefabricated base 1, the prefabricated partition wall 3 is not subjected to force. Under seismic action, the seismic deformation of the shield tunnel 4 is transmitted to the prefabricated partition wall 3 through the abutment, and the prefabricated partition wall 3 undergoes bending deformation. Since there is a gap between the prefabricated partition wall 3 and the top wall of the clamping space 52, a certain amount of relative movement can occur between the prefabricated partition wall 3 and the shield tunnel 4, which to a certain extent releases the bending internal force of the prefabricated partition wall 3.

[0051] Furthermore, both ends of the prefabricated central partition wall 3 are wrapped with flexible material. The first end of the prefabricated central partition wall 3 abuts against the first connecting surface 11 through the flexible material, and the second end of the prefabricated central partition wall 3 abuts against the clamping member 53 through the flexible material. For example, the flexible material can be rubber. By upgrading the hard contact of the prefabricated central partition wall 3 to a flexible contact, under seismic action, the flexible material undergoes elastic deformation before the prefabricated central partition wall 3 to absorb part of the seismic deformation, thereby reducing the seismic response of the prefabricated central partition wall 3.

[0052] To further reduce the seismic response of the precast partition wall 3, viscoelastic or viscous damping material can be installed on the abutting surface of the abutting member 53 to provide damping reaction force and consume vibration capacity under seismic action.

[0053] Furthermore, the first connecting surface 11 is an arc-shaped surface, the second connecting surface 12 is a plane, and an avoidance section 15 is provided between the first connecting surface 11 and the second connecting surface 12. In the embodiments of this application, the width of the second connecting surface 12 is the maximum width of the prefabricated base 1. The setting of the avoidance section 15 reduces the width of the prefabricated base 1 to a certain extent, so as to facilitate the movement of the prefabricated base 1 into the shield tunnel 4.

[0054] Furthermore, the precast silo 1 and the precast intermediate partition wall 3 are provided with lifting hand holes to facilitate the hoisting of the precast silo 1 and the precast intermediate partition wall 3.

[0055] Example 2

[0056] In another specific embodiment of this application, a method for assembling an assembly component is provided. The assembly component is the same as the assembly component in the above embodiment. The assembly component is assembled into the interior of the shield tunnel 4 using the assembly method. Figure 7 As shown, the assembly method includes:

[0057] Step S1: Place the bag 2 on the first connecting surface 11 of the prefabricated bottom compartment 1.

[0058] Specifically, a first groove 13 is provided on the first connecting surface 11, and the bag 2 is adhered to the bottom of the groove 13 and at least part of the side wall of the groove.

[0059] Step S2: Move the prefabricated bottom chamber 1 into the shield tunnel 4 and adjust the position of the prefabricated bottom chamber 1 so that there is a preset gap between the first connecting surface 11 and the inner wall of the shield tunnel 4.

[0060] Specifically, the mechanical equipment can lift the precast base 1 by supporting its bottom or by passing a robotic arm through the hollow part of the precast base 1, or by grabbing the lifting hand holes on the precast base 1 and moving it to a preset position in the tunnel. A preset gap is maintained between the first connecting surface 11 and the inner wall of the shield tunnel 4 through lifting or by using auxiliary components.

[0061] During the movement of the prefabricated silo 1, an electronic monitoring device can be used to assist in its positioning. For example, this electronic monitoring device includes a first displacement sensor and a controller. The first displacement sensor is installed on the second connecting surface 12 of the prefabricated silo 1 and is signal-connected to the controller. The first displacement sensor is used to collect the distance between the second connecting surface 12 and the highest point of the prefabricated silo 1 and transmit the distance information to the controller. The controller includes a comparison module and an output module. The comparison module is configured with calibration distance information. The comparison module compares the received distance information with the calibration distance information to obtain a comparison result, which is output by the output module. When the distance information matches the calibration distance information, the adjustment of the prefabricated silo 1's position stops; when the distance information does not match the calibration distance information, the adjustment of the prefabricated silo 1's position continues until it matches the calibration distance information.

[0062] Step S3: Inject flexible grout 21 into the bag 2 so that the bag 2 abuts against the inner wall of the shield tunnel 4.

[0063] Specifically, the grouting equipment injects flexible grout 21 into the bag 2. During the injection process, the grouting equipment can monitor the grouting pressure in real time so that most or all of the weight of the precast silo 1 is borne by the grouted bag 2. Furthermore, the grouting equipment has the ability to independently adjust the grouting volume of the bag 2 at different positions. By adjusting the grouting volume at different positions, the posture of the precast silo 1 can be further adjusted and controlled to meet the assembly accuracy requirements.

[0064] During the grouting process, the bladder 2 can automatically adapt to the splicing misalignment between the shield tunnel segments 41, that is, there is a positional difference between the shield tunnel segments 41. During grouting, the flexible grouting material 21 is a fluid. The liquid flexible grouting material 21 can adapt to the splicing misalignment and make up for the positional difference, so that the bladder 2 and the tunnel segment can be seamlessly connected. After the flexible grouting material 21 hardens, the grouted bladder 2 can uniformly transfer the load between the precast bottom chamber 1 and the shield tunnel 4.

[0065] Step S4: Connect the prefabricated intermediate partition wall 3 between the second connecting surface 12 of the prefabricated bottom silo 1 and the top of the shield tunnel 4.

[0066] Specifically, a second groove 14 is provided on the second connecting surface 12, extending along the length of the prefabricated base 1. A clamp 5 is provided on the top of the shield tunnel 4, the clamp 5 having a clamping space 52 and a clamping member 53. The clamping space 52 extends along the length of the prefabricated base 1, wherein the distance between the bottom of the second groove 14 and the top wall of the clamping space 52 is greater than the height of the prefabricated intermediate partition wall 3. Mechanical equipment moves the prefabricated intermediate partition wall 3 into the shield tunnel 4 and pushes it into the second groove 14 and the clamping space 52, so that the first end of the prefabricated intermediate partition wall 3 abuts against the bottom of the second groove 14, and there is a gap between the second end of the prefabricated intermediate partition wall 3 and the top wall of the clamping space 52. The position of the clamping member 53 is adjusted so that the clamping member 53 abuts against the side wall of the prefabricated intermediate partition wall.

[0067] During the movement of the prefabricated intermediate partition wall 3, an electronic monitoring device can be used to assist in its positioning. For example, this electronic monitoring device includes a second displacement sensor and a controller. The second displacement sensor is installed at the center of the pushing surface of the prefabricated intermediate partition wall 3, and the second displacement sensor is signal-connected to the controller. The second displacement sensor is used to collect the first distance information between the center position of the pushing surface and the side wall of the second groove 14, and the second distance information between the center position of the pushing surface and the bottom of the second groove 14, and transmits the first distance information and the second distance information to the controller. The controller includes a comparison module and an output module. The comparison module is set with first calibration distance information and second calibration distance information. The comparison module compares the received first distance information with the first calibration distance information and compares the received second distance information with the second calibration distance information to obtain a first comparison result and a second comparison result. The first comparison result and the second comparison result are output by the output module. When the first distance information is consistent with the first calibration distance information and the second distance information is consistent with the second calibration distance information, the position adjustment of the prefabricated intermediate partition wall 3 is stopped. When there is a discrepancy between the first distance information and the first calibration distance information or between the second distance information and the second calibration distance information, the position adjustment of the prefabricated intermediate partition wall 3 continues.

[0068] Further, in step S2, the prefabricated base 1 is moved into the shield tunnel 4, and the position of the prefabricated base 1 is adjusted so that there is a preset gap between the first connecting surface 11 and the inner wall of the shield tunnel 4, including:

[0069] Step S21: Connect the leveling bolt 6 to the bottom of the prefabricated hopper 1.

[0070] Specifically, the bottom of the prefabricated silo 1 is provided with a through threaded hole, and the leveling bolt 6 is connected to the threaded hole. The leveling bolt 6 is set perpendicular to the first connecting surface 11. In order to provide more stable support for the prefabricated silo 1, at least 4 leveling bolts 6 are provided.

[0071] Step S22: Adjust the length of the leveling bolt 6 so that the leveling bolt 6 abuts against the inner wall of the shield tunnel 4.

[0072] Specifically, a gasket is provided on the inner wall of the shield tunnel 4, and the leveling bolt 6 abuts against the inner wall of the shield tunnel 4 through the gasket to reduce stress concentration caused by joint contact.

[0073] Furthermore, the assembly method also includes: after the flexible grouting material 21 inside the bag 2 has hardened, removing the leveling bolts 6.

[0074] Specifically, the leveling bolt 6 is rigidly connected to the inner wall of the shield tunnel 4 to prevent seismic deformation from being transmitted to the bottom chamber of the shield through the leveling bolt 6. After the flexible grouting material 21 in the bag 2 hardens, the leveling bolt 6 can be removed.

[0075] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0076] 1. There is a preset gap between the first connecting surface 11 of the precast base 1 and the inner wall of the shield tunnel 4. The first connecting surface 11 abuts against the inner wall of the shield tunnel 4 through the grouting bag 2. The elastic modulus of the hardened flexible grouting material 21 in the bag 2 is less than or equal to the elastic modulus of the precast base 1. Under seismic action, the flexible grouting material 21 in the bag 2 deforms first than the precast base 1 to absorb part of the seismic deformation, thereby reducing the seismic deformation transmitted to the precast base 1, so that the assembled components have the ability to absorb seismic deformation.

[0077] 2. The inner wall of the shield tunnel 4 is made up of multiple shield segments 41 spliced ​​together. There is a splicing misalignment between adjacent shield segments 41, that is, there is a position difference between shield segments 41. During grouting, the flexible grouting material 21 is a fluid. The liquid flexible grouting material 21 can adapt to the splicing misalignment and make up for the position difference so that the bag 2 and the segment can be seamlessly connected.

[0078] 3. There is a gap between the second end of the precast partition wall 3 and the top wall of the shield tunnel 4. The second groove 14 and the clamp 5 provide left and right abutment and limit the precast partition wall 3. The precast partition wall 3 is not subjected to force in the length and height directions of the precast base 1. Under seismic action, the seismic deformation of the shield tunnel 4 is transmitted to the precast partition wall 3 through the abutment component, and the precast partition wall 3 undergoes bending deformation. Since there is a gap between the precast partition wall 3 and the top wall of the clamping space 52, a certain relative movement can occur between the precast partition wall 3 and the shield tunnel 4, which releases the bending internal force of the precast partition wall 3 to a certain extent.

[0079] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0080] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0081] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0082] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An assembly component for use inside a shield tunnel, characterized in that, include: A prefabricated silo (1) has a first connecting surface (11) and a second connecting surface (12). Bag (2), the bag (2) is connected to the first connecting surface (11), the bag (2) is used to hold flexible grout (21); A prefabricated central partition wall (3) is detachably connected to the second connecting surface (12); After grouting, the bladder (2) extends to the outside of the first connecting surface (11) and abuts against the inner wall of the shield tunnel (4) so ​​that the first connecting surface (11) and the inner wall of the shield tunnel (4) have a preset gap. The elastic modulus of the hardened flexible grout (21) is E1, and the elastic modulus of the prefabricated bottom chamber (1) is E2, E1≤E2. The second connecting surface (12) of the prefabricated bottom chamber (1) is connected to the top of the shield tunnel (4) through the prefabricated partition wall (3). The inner wall of the shield tunnel (4) is made up of multiple shield segments (41). During grouting, the flexible grout (21) is fluid and can adapt to the splicing misalignment between the shield segments (41). There are multiple bags (2), and the multiple bags (2) are distributed at intervals on the first connecting surface (11). The stiffness of the flexible grouting material (21) inside the different bags (2) after hardening is different. The first connecting surface (11) is an arc-shaped surface. A first bladder is provided at the lowest point of the first connecting surface (11). The stiffness of the flexible grout (21) inside the first bladder after hardening is EI1. The stiffness of the flexible grout (21) inside the other bladders (2) besides the first bladder after hardening is EI2. EI1 is greater than EI2.

2. The assembly component for use inside a shield tunnel according to claim 1, characterized in that, The first connecting surface (11) is provided with a first groove (13), and the bag (2) is connected to the inner wall of the first groove (13).

3. The assembly assembly for use inside a shield tunnel according to claim 1, characterized in that, The second connecting surface (12) is provided with a second groove (14), the second groove (14) extends along the length direction of the prefabricated base (1), the first end of the prefabricated partition wall (3) is inserted into the second groove (14), and the assembly assembly further includes: A clamp (5) is used to connect to the top of the shield tunnel (4). The clamp (5) has a clamping space (52) and a clamping member (53). The clamping space (52) extends along the length of the prefabricated bottom chamber (1) and is used to accommodate the second end of the prefabricated intermediate partition wall (3). The clamping member (53) has a locking position that extends into the clamping space (52) to abut against the side wall of the prefabricated intermediate partition wall (3) and an unlocking position that is located outside the clamping space (52) to disengage from the side wall of the prefabricated intermediate partition wall (3).

4. The assembly assembly for use inside a shield tunnel according to claim 3, characterized in that, Both ends of the prefabricated partition wall (3) are wrapped with flexible material. The first end of the prefabricated partition wall (3) abuts against the first connecting surface (11) through the flexible material, and the second end of the prefabricated partition wall (3) abuts against the clamping member (53) through the flexible material.

5. The assembly assembly for use inside a shield tunnel according to claim 1, characterized in that, The first connecting surface (11) is an arc-shaped surface, the second connecting surface (12) is a plane, and an avoidance tangent (15) is provided between the first connecting surface (11) and the second connecting surface (12).

6. A method for assembling an assembly component according to any one of claims 1-5, characterized in that, The assembly method described above is used to assemble the assembly components into the shield tunnel (4). The assembly method includes: Place the bag (2) on the first connecting surface (11) of the prefabricated bottom compartment (1); Move the prefabricated bottom chamber (1) into the shield tunnel (4) and adjust the position of the prefabricated bottom chamber (1) so that there is a preset gap between the first connecting surface (11) and the inner wall of the shield tunnel (4); Flexible grout (21) is injected into the bag (2) so that the bag (2) abuts against the inner wall of the shield tunnel (4); The prefabricated partition wall (3) is connected between the second connecting surface (12) of the prefabricated bottom silo (1) and the top of the shield tunnel (4).

7. The assembly method according to claim 6, characterized in that, Moving the prefabricated base hopper (1) into the shield tunnel (4) and adjusting the position of the prefabricated base hopper (1) to create a preset gap between the first connecting surface (11) and the inner wall of the shield tunnel (4), including: Connect the leveling bolt (6) to the bottom of the prefabricated hopper (1); Adjust the length of the leveling bolt (6) so that the leveling bolt (6) abuts against the inner wall of the shield tunnel (4).

8. The assembly method according to claim 7, characterized in that, The assembly method also includes: After the flexible grout (21) inside the bag (2) has hardened, remove the leveling bolt (6).

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