Special-shaped steel sleeve structure for shield lateral compensation starting
By setting a special-shaped steel sleeve on the palm surface of the shield starting and filling the mixture with similar properties, the problem of shield starting imbalance is solved, the safety risk is reduced and the excavation accuracy is improved.
Patent Information
- Application Number
- CN202420808826.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-04-18
AI Technical Summary
Because the translation transverse channel intersects obliquely with the main line of the shield, the shield is unbalanced, and safety and excavation accuracy are difficult to guarantee.
A steel sleeve with a special shape extending extends on the palm surface of the shield structure is installed, and a mixture with similar properties to the reinforced soil is filled as filler to establish soil pressure balance in advance.
The problem of imbalance initiation due to the oblique intersection of the translation transverse channel and the shield segment is solved, the security risk of shield segment originates is reduced, the shield segment can start excavation and bore well, and the excavation accuracy is better controlled.
Smart Images
Figure CN222936751U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel shield construction, in particular to a special-shaped steel sleeve structure for lateral compensation starting of a shield tunneling machine. Background Art
[0002] In the construction of urban subway, shield tunneling method is often used for the construction of interval tunnels. When the shield starting conditions are not available at both ends of the stations, a shield starting shaft can be separately set in the interval range. When it is restricted by road traffic and the shield starting shaft cannot be directly set above the interval, a shield starting shaft can be set in the lateral plot of the interval, and then a shield translation cross passage is connected to the interval main line. After the shield tunneling machine is hoisted into the shield starting shaft, the shield tunneling machine is pushed to the shield starting portal through the translation cross passage. In order to ensure the translation and rotation of the shield tunneling machine in place and meet the turning radius of the muck truck, the shield translation cross passage and the interval main line need to be designed to be obliquely intersecting.
[0003] The oblique intersection of the translation cross passage and the shield interval main line results in a large gap between the shield cutter head and the starting face, the starting stratum is uneven, and it is not easy to ensure the safety of shield starting, and the tunneling accuracy is difficult to control. Summary of the Utility Model
[0004] The utility model aims to solve the technical problems of unbalanced starting caused by the oblique intersection of the translation cross passage and the shield interval main line, and the safety and tunneling accuracy of the shield starting stage cannot be guaranteed. The purpose is to provide a special-shaped steel sleeve structure for lateral compensation starting of a shield tunneling machine. By setting a special-shaped extended steel sleeve on the shield starting face and filling a mixture with properties similar to the reinforced soil in the steel sleeve as a filler, the soil pressure balance is established in advance on the shield starting face, the problem of unbalanced starting caused by the oblique intersection of the translation cross passage and the shield interval main line is solved, which is beneficial to reducing the safety risk of shield starting, ensuring the normal starting and tunneling of the shield, and better controlling the tunneling accuracy.
[0005] The utility model is realized by the following technical solutions:
[0006] A special-shaped steel sleeve structure for lateral compensation starting of a shield tunneling machine includes a shield translation cross passage and a shield interval, and also includes a steel sleeve and a near-soil filler filled in the steel sleeve. The shield translation cross passage is obliquely intersecting with the shield interval. A portal ring beam is provided on the side wall of the shield translation cross passage. The steel sleeve is connected with the portal ring beam. The central axis of the steel sleeve coincides with the central axis of the shield interval. A support structure is also connected to the side of the steel sleeve.
[0007] In the present utility model, the steel sleeve extends from the portal of the shield starting end into the shield translation cross-passage. When the shield machine starts, the shield machine needs to be placed on the shield starting bracket, and a reaction frame is also installed on the main structure behind the shield machine to provide a reaction force for the excavation of the shield machine when it advances forward. By setting a steel sleeve with a special-shaped extension at the shield starting face and filling a mixture similar to the reinforced soil in performance as a filler in the steel sleeve, the soil pressure balance can be established in advance at the shield face, solving the problem of unbalanced starting due to the skew intersection of the translation cross-passage and the main line of the shield section, which is beneficial to reducing the safety risk of shield starting, ensuring that the shield can start and excavate normally, and better controlling the excavation accuracy.
[0008] As a further technical solution of the present utility model, the near-soil filler is a mixture containing bentonite and slightly expanding mortar.
[0009] As a further technical solution of the present utility model, rib plates are arranged on the outer wall of the steel sleeve. By arranging rib plates on the outer wall of the steel sleeve in the present utility model, the strength of the steel sleeve can be improved. On the one hand, it can improve the stability when filling the near-soil filler, and on the other hand, it can ensure the reliability and stability of the operation when the shield machine starts.
[0010] As a further technical solution of the present utility model, the rib plates are arranged in a ring and longitudinally crosswise along the outer wall of the steel sleeve. The rib plate structure arranged in a ring and longitudinally crosswise can effectively improve the strength of the steel sleeve and ensure good stability when it is stressed.
[0011] As a further technical solution of the present utility model, a filler hole is reserved above the steel sleeve.
[0012] As a further technical solution of the present utility model, a base is arranged at the bottom of the steel sleeve, and the base is filled with base filler inside. By arranging a base at the bottom of the steel sleeve in the present utility model, the upper surface of the base is a supporting surface in contact with the steel sleeve, and the supporting surface provides a large supporting area for the steel sleeve to ensure the stability of the support. The base is filled with base filler inside, which can further improve the rigidity of the base, thereby realizing a stable supporting effect.
[0013] As a further technical solution of the present utility model, the contact surface between the base and the steel sleeve is arc-shaped. By setting the contact surface to be arc-shaped in the present utility model, it can better match the outer surface shape of the steel sleeve, increase the contact area between the steel sleeve and the base, and thus provide better and more stable supporting force for the support of the steel sleeve.
[0014] As a further technical solution of the present utility model, a plurality of support structures are provided. One end of each support structure is connected to the outer wall of the steel sleeve, and the other end is connected to the inner wall of the shield translation cross-passage. By arranging a plurality of support structures to support the side surface of the steel sleeve, the stability of the steel sleeve is further ensured.
[0015] As a further technical solution of the present utility model, the support structure includes a support rod. One end of the support rod is connected to the outer wall of the steel sleeve, and the other end is connected to the inner wall of the shield translation cross-passage through a pre-embedded steel plate. By connecting the steel sleeve and the inner wall of the shield translation cross-passage through the support rod, effective support for the side surface of the steel sleeve can be achieved.
[0016] As a further technical solution of the present utility model, a backing plate is provided at the connection between the support rod and the steel sleeve.
[0017] Compared with the prior art, the present utility model has the following advantages and beneficial effects:
[0018] 1. In the present utility model, the steel sleeve extends from the portal of the shield starting end into the shield translation cross-passage. When the shield machine starts, the shield machine needs to be placed on the shield starting bracket, and a reaction frame is also installed on the main structure behind the shield machine to provide a reaction force for the shield machine to advance forward during tunneling. By setting a steel sleeve with a special-shaped extension at the shield starting face and filling a mixture with properties similar to the reinforced soil in the steel sleeve as a filler, the soil pressure balance can be established in advance at the shield face, solving the problem of unbalanced starting due to the skew intersection of the translation cross-passage and the main line of the shield section, which is beneficial to reducing the safety risk of shield starting, ensuring that the shield can start tunneling normally, and better controlling the tunneling accuracy.
[0019] 2. By filling a mixture containing bentonite and slightly expanded mortar in the steel sleeve in the present utility model, whose properties are similar to the reinforced soil, the soil pressure balance can be established in advance at the shield face, thus solving the problem of unbalanced starting due to the skew intersection of the translation cross-passage and the main line of the shield section, which is beneficial to reducing the safety risk of shield starting, ensuring that the shield can start tunneling normally, and better controlling the tunneling accuracy.
[0020] 3. By arranging rib plates on the outer wall of the steel sleeve in the present utility model, the strength of the steel sleeve can be improved. On the one hand, it can improve the stability when filling the soil-like filler, and on the other hand, it can ensure the reliability and stability of the operation during the start of the shield machine.
[0021] 4. The utility model provides a stable support by setting a base at the bottom of the steel sleeve. The upper surface of the base is a support surface that contacts the steel sleeve. The support surface provides a large support area for the steel sleeve, ensuring the stability of the support. Inside the base, several parallel steel plates are evenly arranged. The arrangement of these steel plates can further provide support for the steel sleeve and improve the support stability. Between two adjacent steel plates, a base filler is filled. The base filler is concrete, which can improve the rigidity of the base and thus achieve a stable support effect.
[0022] 5. The utility model can better match the outer surface shape of the steel sleeve by setting the upper surface of the base as an arc, increasing the contact area between the steel sleeve and the base, and thus providing a better and more stable support force for the support of the steel sleeve.
[0023] 6. The utility model further ensures the stability of the steel sleeve by setting multiple support structures to support the side of the steel sleeve. Brief Description of the Drawings
[0024] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts. In the drawings:
[0025] Figure 1 is the overall plan view of the present utility model;
[0026] Figure 2 is the plan view of the steel sleeve of the present utility model;
[0027] Figure 3 is Figure 2 the sectional view taken along line C-C in
[0028] Figure 4 is Figure 2 the sectional view taken along line D-D in
[0029] Figure 5 is Figure 2 the sectional view taken along line E-E in
[0030] Figure 6 is Figure 2 the sectional view taken along line F-F in
[0031] Figure 7 is the sectional view of the base;
[0032] Figure 8 is the sectional view of the support structure.
[0033] Marks in the drawings and corresponding component names:
[0034] 1 - Shield translation cross passage, 2 - Side wall, 3 - Ring beam at the opening, 4 - Shield section, 5 - Steel sleeve, 6 - Near-soil filler, 7 - Rib plate, 8 - Filler hole, 9 - Base, 10 - Base filler, 11 - Base plate, 12 - Support rod, 13 - Embedded steel plate, 14 - Shield launching bracket, 15 - Reaction frame. Specific implementation mode
[0035] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. The illustrative embodiments and descriptions of the present utility model are only used to explain the present utility model and do not limit the present utility model.
[0036] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present utility model. However, it is obvious to those of ordinary skill in the art that: It is not necessary to adopt these specific details to implement the present utility model. In other embodiments, well-known structures, circuits, materials or methods are not specifically described in order to avoid obscuring the present utility model.
[0037] Throughout the specification, the reference to "one embodiment", "embodiment", "one example" or "example" means that the specific features, structures or characteristics described in conjunction with that embodiment or example are included in at least one embodiment of the present utility model. Therefore, the phrases "one embodiment", "embodiment", "one example" or "example" that appear throughout the specification do not necessarily all refer to the same embodiment or example. In addition, the specific features, structures or characteristics can be combined in any appropriate combination and / or sub-combination in one or more embodiments or examples. In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0038] In the description of the present utility model, the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection scope of the present utility model.
[0039] Embodiment 1
[0040] A special-shaped steel sleeve structure for lateral compensation launching of a shield, such as Figures 1 - 8As shown in the figure, it includes a shield translation cross-passage 1 and a shield tunnel section 4. The shield translation cross-passage 1 is the passage for the lateral movement of the shield machine, and the shield tunnel section 4 is the location of the tunnel section to be constructed;
[0041] It also includes a steel sleeve 5 and a near-soil filler 6 filled in the steel sleeve 5. The shield translation cross-passage 1 intersects obliquely with the shield tunnel section 4. A portal ring beam 3 is provided on the side wall 2 of the shield translation cross-passage 1. The steel sleeve 5 is connected to the portal ring beam 3. The portal ring beam 3 is arranged on the portal of the shield starting end. The central axis of the steel sleeve 5 coincides with the central axis of the shield tunnel section 4;
[0042] A support structure is also connected to the side of the steel sleeve 5 to provide a stable supporting force for the steel sleeve 5 through the support structure.
[0043] In the present utility model, the steel sleeve 5 extends from the portal of the shield starting end into the shield translation cross-passage 1. When the shield machine starts, the shield machine needs to be placed on a shield starting bracket 14, and a reaction frame 15 is also installed on the main structure behind the shield machine to provide a reaction force for the shield machine during tunneling forward. By setting a steel sleeve 5 with a special-shaped extension at the shield starting face, a mixture similar to the reinforced soil in performance is filled in the steel sleeve 5 as a filler, so that the soil pressure balance is established in advance at the shield face, solving the problem of unbalanced starting due to the oblique intersection of the translation cross-passage and the main line of the shield tunnel section 4, which is beneficial to reducing the safety risk of shield starting, ensuring that the shield can start tunneling normally, and better controlling the tunneling accuracy.
[0044] As Figure 2 shown, the steel sleeve 5 is longitudinally segmented and is assembled on site by multiple steel sleeve monomers. As Figures 3 - 6 shown, the steel sleeve 5 is of a special-shaped structure. The cross-section of the steel sleeve 5 presents a circular shape at the end far from the portal of the shield starting end, and the cross-section of the steel sleeve 5 close to the portal of the shield starting end presents a gradually changing open circle with an increasingly large opening. This special-shaped structure can better adapt to the oblique intersection of the shield translation cross-passage 1 and the shield tunnel section 4.
[0045] In one or more embodiments of the present utility model, the near-soil filler 6 is a mixture containing bentonite and micro-expansion mortar. By filling a mixture containing bentonite and micro-expansion mortar in the steel sleeve 5 in the present utility model, its performance is similar to that of the reinforced soil, so that the soil pressure balance is established in advance at the shield face, thus solving the problem of unbalanced starting due to the oblique intersection of the translation cross-passage and the main line of the shield tunnel section 4, which is beneficial to reducing the safety risk of shield starting, ensuring that the shield can start tunneling normally, and better controlling the tunneling accuracy.
[0046] In one or more embodiments of the present utility model, rib plates 7 are provided on the outer wall of the steel sleeve 5. By providing rib plates 7 on the outer wall of the steel sleeve 5, the strength of the steel sleeve 5 can be improved. On the one hand, the stability during the filling of the near-soil filler 6 can be enhanced, and on the other hand, the reliability and stability of the operation during the starting of the shield machine can be ensured.
[0047] Specifically, as Figure 2 shown, the rib plates 7 are arranged in a ring and longitudinally crosswise along the outer wall of the steel sleeve 5. The rib plates 7 arranged in a ring and longitudinally crosswise form a grid-like structure, which can effectively improve the strength of the steel sleeve 5 and ensure good stability when it is stressed.
[0048] Specifically, a filling hole 8 is reserved above the steel sleeve 5. With the reserved filling hole 8 in the present utility model, it is convenient to fill the inside of the steel sleeve 5.
[0049] In one or more embodiments of the present utility model, a base 9 is provided at the bottom of the steel sleeve 5, and a base filler 10 is filled inside the base 9. As Figure 7 shown, the base 9 is formed by connecting a plurality of steel plates. The upper surface of the base 9 is a supporting surface in contact with the steel sleeve 5. The supporting surface provides a relatively large supporting area for the steel sleeve 5, ensuring the stability of the support. A number of parallel steel plates are evenly arranged inside the base 9. The arrangement of these steel plates can further provide support for the steel sleeve 5 and improve the support stability. The base filler 10, which is concrete, is filled between two adjacent steel plates, thereby improving the rigidity of the base 9 and realizing a stable supporting effect.
[0050] Specifically, the contact surface between the base 9 and the steel sleeve 5 is arc-shaped. In the present utility model, since the outer surface of the steel sleeve 5 is circular or arc-shaped, and the upper surface of the base 9 is the contact surface with the steel sleeve 5, setting this contact surface as arc-shaped can better match the outer surface shape of the steel sleeve 5, increase the contact area between the steel sleeve 5 and the base 9, and thus provide better and more stable supporting force for the support of the steel sleeve 5.
[0051] In one or more embodiments of the present utility model, there are a plurality of the support structures. One end of each support structure is connected to the outer wall of the steel sleeve 5, and the other end is connected to the inner wall of the shield translation cross passage 1. Since the volume of the steel sleeve 5 is relatively large, the supporting effect of the base 9 cannot fully ensure the stability of the support to a certain extent. By providing a plurality of support structures to support the side of the steel sleeve 5 in the present utility model, the stability of the steel sleeve 5 is further ensured.
[0052] Specifically, as Figure 8As shown, the support structure includes a support rod 12. One end of the support rod 12 is connected to the outer wall of the steel sleeve 5, and the other end is connected to the inner wall of the shield translation cross-passage 1 through a pre-embedded steel plate 13. The support rod 12 is made of section steel. One end of it is connected to the outer wall of the steel sleeve 5, and the other end is connected to the inner wall of the shield translation cross-passage 1 through the pre-embedded steel plate 13. By connecting the steel sleeve 5 to the inner wall of the shield translation cross-passage 1 through the support rod 12, effective support for the side of the steel sleeve 5 can be achieved.
[0053] Specifically, a backing plate 11 is provided at the connection between the support rod 12 and the steel sleeve 5. In the present utility model, by providing the backing plate 11 at the connection between the support rod 12 and the steel sleeve 5, the connection between the support rod 12 and the steel sleeve 5 can be facilitated, and the setting of the backing plate 11 can increase the contact area at the connection between the support rod 12 and the steel sleeve 5, providing a good fixing effect for the connection of the support rod 12.
[0054] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A special-shaped steel sleeve structure for shield lateral compensation, comprising a shield translation transverse channel (1) and a shield section (4), characterized in that: It also includes a steel sleeve (5) and a near-soil filler (6) filled in the steel sleeve (5); the shield translation transverse channel (1) is obliquely intersected with the shield section (4); a hole opening ring beam (3) is provided on the side wall (2) of the shield translation transverse channel (1); the steel sleeve (5) is connected to the hole opening ring beam (3); the central axis of the steel sleeve (5) coincides with the central axis of the shield section (4); and the side of the steel sleeve (5) is also connected to a supporting structure; The outer wall of the steel sleeve (5) is provided with ribs (7), and the ribs (7) are arranged in a ring shape and longitudinally cross along the outer wall of the steel sleeve (5); A base (9) is provided at the bottom of the steel sleeve (5), and the interior of the base (9) is filled with a base filler (10).
2. The special-shaped steel sleeve structure for shield lateral compensation according to claim 1 is characterized in that: The near-soil filler (6) is a mixture containing bentonite and micro-expansion mortar.
3. The special-shaped steel sleeve structure for shield lateral compensation according to claim 1 is characterized in that: A packing hole (8) is reserved above the steel sleeve (5).
4. The special-shaped steel sleeve structure for shield lateral compensation according to claim 1 is characterized in that: The contact surface between the base (9) and the steel sleeve (5) is arc-shaped.
5. The special-shaped steel sleeve structure for shield lateral compensation according to claim 1 is characterized in that: The support structure is provided in plurality, one end of the support structure is connected to the outer wall of the steel sleeve (5), and the other end is connected to the inner wall of the shield translation transverse channel (1).
6. The special-shaped steel sleeve structure for shield lateral compensation according to claim 1 is characterized in that: The support structure comprises a support rod (12), one end of which is connected to the outer wall of the steel sleeve (5), and the other end of which is connected to the inner wall of the shield translation transverse channel (1) via an embedded steel plate (13).
7. The special-shaped steel sleeve structure for shield lateral compensation according to claim 6 is characterized in that: A pad (11) is provided at the connection between the support rod (12) and the steel sleeve (5).