Short side wall synchronous construction supporting system for shield tunnel

Abstract

The utility model relates to the field of shield tunnel construction, in particular to a short side wall synchronous construction supporting system for a shield tunnel, which comprises a gate-type trolley, a short side wall template module and a hydraulic supporting module, in the process of shield tunnel secondary lining construction, real-time template supporting is realized for a short side wall through the short side wall template module, and the short side wall is supported by the hydraulic supporting module. Synchronous concrete pouring construction with a second lining is achieved on each end face, the hydraulic supporting module can effectively support adjustment of the low side wall formwork module, so that the low side wall formwork module can be adjusted to the state meeting the design requirement no matter which section is constructed, construction continuity is effectively guaranteed, and construction efficiency is improved. Conditions are provided for synchronous construction of the short side wall and the second lining, construction continuity is guaranteed, meanwhile, efficiency is improved, and cost is saved.

Description

Technical Field

[0001] This application relates to the field of shield tunnel construction, and in particular to a support system for the synchronous construction of low sidewalls in shield tunnels. Background Technology

[0002] With the continuous improvement of my country's infrastructure, a large number of tunnels are constructed in high-speed rail, highway, and municipal projects. Sidewalls are a common auxiliary structure in tunnels, mainly used for reinforcement and functional expansion of the tunnel floor on both sides. Located on both sides of the tunnel floor, adjacent to the tunnel lining, sidewalls typically extend 0.5-1.5 meters and are arranged as continuous strips, connecting to the tunnel invert. Sidewalls serve multiple functions of the tunnel, such as drainage, equipment installation, and tunnel structural protection.

[0003] In related technologies, the construction method for low sidewalls in mining methods typically involves casting the low sidewalls using an inverted arch trestle bridge reinforced with slipform or web formwork. This casting process is complex and incompatible with the requirement for precast box culverts in shield tunnels, as trestle bridges are unsuitable for installation within shield tunnels. Therefore, formwork reinforcement using cross-bracing is not feasible. Constructing the low sidewalls after shield tunneling completion would significantly restrict secondary lining construction, negatively impacting schedule and cost control.

[0004] For shield tunnel construction, continuity is crucial. To ensure continuity, shield tunnels do not use invert arches or backfilling; instead, precast box culverts serve as construction platforms. Furthermore, slurry pipelines run along both sides of the shield tunnel, making it impossible to use bracing structures to reinforce the formwork. Therefore, to meet the requirements of continuous shield tunnel construction, a synchronous construction support system for the low sidewalls of shield tunnels is urgently needed. Utility Model Content

[0005] To ensure the continuity of shield tunnel construction, improve the efficiency of shield tunnel secondary lining construction, and thus save construction costs, this application provides a support system for the synchronous construction of low sidewalls in shield tunnels.

[0006] The technical solution of the synchronous construction support system for the low sidewall of shield tunnel provided in this application is as follows:

[0007] A support system for the synchronous construction of low sidewalls in shield tunnels includes:

[0008] A gantry trolley is installed inside the tunnel;

[0009] The low side wall formwork module is rotatably connected to the gantry trolley, and the low side wall formwork module can support the low side wall formwork during the concrete pouring process.

[0010] A hydraulic support module is mounted on the gantry trolley and is used to support the low side wall formwork module.

[0011] By adopting the above technical solution, the synchronous construction support system for the low sidewall of this application is configured as a combination of a gantry trolley, a low sidewall formwork module, and a hydraulic support module. This allows the gantry trolley to be used to adjust the low sidewall formwork module during the construction of the secondary lining of the shield tunnel, while the hydraulic support module can also effectively adjust the low sidewall formwork module. In other words, the gantry trolley not only plays a role during the construction of the secondary lining but also provides effective support for the construction of the low sidewall simultaneously. This application achieves the effect of providing conditions for the synchronous construction of the low sidewall and the secondary lining, ensuring the continuity of the shield tunnel construction process, improving the efficiency of the secondary lining construction of the shield tunnel, and thus saving construction costs.

[0012] Optionally, the low side wall formwork module includes a prefabricated formwork and an adjustment component. The prefabricated formwork is prefabricated according to design requirements, and the adjustment component is used to adjust the support position of the prefabricated formwork.

[0013] By adopting the above technical solution, when it is necessary to adjust the precast formwork used for the construction of the low side wall, it is only necessary to adjust the specific position of the precast formwork by adjusting the components according to the design requirements, so as to realize the support of the low side wall formwork and effectively ensure the operability of the low side wall to be constructed together with the secondary lining.

[0014] Optionally, the adjustment assembly includes a first rod group and a second rod group, wherein the first rod group is disposed between the gantry trolley and the precast template, and the second rod group is disposed between the hydraulic support module and the precast template.

[0015] By adopting the above technical solution, the first rod group is mainly used to adjust the position and angle of the precast template, and the second rod group is mainly used to support the precast template during the pouring of the low side wall. Together, they work to complete the synchronous construction with the secondary lining.

[0016] Optionally, the hydraulic support module includes a rectangular telescopic sleeve and a hydraulic telescopic rod. The hydraulic telescopic rod can drive the rectangular telescopic sleeve to extend and retract. The fixed section of the rectangular telescopic sleeve is fixedly connected to the gantry trolley, and the telescopic section of the rectangular telescopic sleeve is slidably connected to the fixed section. One end of the hydraulic telescopic rod is connected to the fixed section of the rectangular telescopic sleeve, and the other end is connected to the telescopic section of the rectangular telescopic sleeve.

[0017] By adopting the above technical solution, the hydraulic support module can effectively adapt to the changes of the low side wall formwork module, thereby effectively supporting the low side wall formwork module.

[0018] Optionally, the first rod group includes a first transverse rod and a second transverse rod. The prefabricated template is provided with a first hinge and a second hinge. One end of the first transverse rod is hinged to the gantry trolley, and the other end is hinged to the first hinge. One end of the second transverse rod is hinged to the gantry trolley, and the other end is hinged to the second hinge.

[0019] By adopting the above technical solution, the adjustment of the first and second transverse bars can effectively adjust the precast template to a position that meets the design requirements.

[0020] Optionally, the second rod group includes a first longitudinal rod and a second longitudinal rod. One end of the first longitudinal rod is hinged to the telescopic section of the rectangular telescopic sleeve, and the other end is hinged to the first hinge member. One end of the second longitudinal rod is hinged to the telescopic section of the rectangular telescopic sleeve, and the other end is hinged to the second hinge member.

[0021] By adopting the above technical solution, the adjustment of the first longitudinal rod and the second longitudinal rod enables the hydraulic support module to better support the precast template.

[0022] Optionally, both the first hinge and the second hinge include H-beams.

[0023] By adopting the above technical solution and installing H-beams, the stability of the formwork support is further ensured.

[0024] Optionally, a reinforcing tie rod is also provided, one end of which is hinged to the gantry trolley and the other end is hinged to the telescopic section of the rectangular telescopic sleeve.

[0025] By adopting the above technical solution and strengthening the tie rod, the stability of the rectangular telescopic sleeve is further improved.

[0026] In summary, this application includes the following beneficial technical effects:

[0027] (1) By setting the synchronous construction support system for the low sidewall of this application as a combination of gantry trolley, low sidewall formwork module and hydraulic support module, when constructing the secondary lining of the shield tunnel, the advantages of the gantry trolley can be used to adjust the low sidewall formwork module. At the same time, the hydraulic support module can effectively adjust the low sidewall formwork module. In other words, the gantry trolley can not only play a role when constructing the secondary lining, but also provide effective support for the construction of the low sidewall at the same time. This application has achieved the effect of providing conditions for the synchronous construction of the low sidewall and the secondary lining, ensuring the continuity of the shield tunnel construction process, improving the efficiency of the secondary lining construction of the shield tunnel, and thus saving construction costs.

[0028] (2) By setting up the first rod group and the second rod group, the first rod group is mainly used to adjust the position and angle of the precast template, and the second rod group is mainly used to support the precast template during the pouring of the low side wall. Together, they can complete the synchronous construction with the secondary lining.

[0029] (3) The installation of H-beams and reinforcing tie rods further enhances the stability of the synchronous construction support system for the low side wall of this application. Attached Figure Description

[0030] Figure 1 This is a detailed design drawing of a short sidewall synchronous construction support system for shield tunnels according to an embodiment of this application.

[0031] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Gantry trolley; 2. Low side wall formwork module; 21. Precast formwork; 22. Adjustment component; 221. First rod group; 2211. First transverse rod; 2212. Second transverse rod; 222. Second rod group; 2221. First longitudinal rod; 2222. Second longitudinal rod; 3. Hydraulic support module; 31. Rectangular telescopic sleeve; 32. Hydraulic telescopic rod; 4. First hinge; 5. Second hinge; 6. H-beam; 7. Reinforcing tie rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model belong to the present utility model.

[0035] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0036] Reference Figure 1 and Figure 2A synchronous construction support system for the low sidewall of a shield tunnel includes a gantry trolley 1, a low sidewall formwork module 2, and a hydraulic support module 3. During the secondary lining construction of the shield tunnel, the low sidewall formwork module 2 provides real-time formwork support for the low sidewall, enabling synchronous concrete pouring with the secondary lining at each end face. The hydraulic support module 3 effectively supports the adjustment of the low sidewall formwork module 2, ensuring that it can be adjusted to the design requirements regardless of the cross-section being constructed. This effectively guarantees the continuity of construction. This application not only provides conditions for the synchronous construction of the low sidewall and the secondary lining, ensuring the continuity of the shield tunnel construction process, but also improves the efficiency of the secondary lining construction of the shield tunnel, thereby saving construction costs.

[0037] Specifically, in this embodiment, the gantry trolley 1 is installed inside the tunnel. The gantry trolley 1 uses a rigid gantry structure to support large steel formwork, ensuring that the formwork does not deform or shift during concrete pouring. Its core function is to efficiently and accurately complete the pouring and shaping of tunnel lining concrete, while simultaneously ensuring construction safety and quality. In the synchronous construction support system of this application, the gantry trolley 1 also plays a crucial role.

[0038] Specifically, in this embodiment, the low side wall formwork module 2 is rotatably connected to the gantry trolley 1, and the low side wall formwork module 2 can support the low side wall formwork during the concrete pouring process.

[0039] Furthermore, the low side wall formwork module 2 includes a prefabricated formwork 21 and an adjustment component 22. The prefabricated formwork 21 is prefabricated according to design requirements, and the adjustment component 22 is used to adjust the support position of the prefabricated formwork 21.

[0040] When it is necessary to adjust the precast formwork 21 used for the construction of the low side wall, it is only necessary to adjust the specific position of the precast formwork 21 by adjusting the component 22 according to the design requirements, so as to realize the support of the low side wall formwork and effectively ensure the operability of the low side wall to be constructed together with the secondary lining.

[0041] Furthermore, regarding the precast formwork 21, in this embodiment, it is prefabricated in the factory according to design requirements and then transported to the construction site. Specifically, the precast formwork 21 uses a 6mm thick panel (Q345B steel plate), 12mm thick side panels, and 63mm angle steel backing; the precast formwork 21 is 12.1 meters long with an overlap length of 0.1 meters.

[0042] Meanwhile, the precast template 21 is provided with a first hinge 4 and a second hinge 5, and in this embodiment, both the first hinge 4 and the second hinge 5 include H-beams 6.

[0043] The H-beam 6 is mainly used to ensure that the precast formwork 21 has sufficient rigidity, which enables better force transmission and further ensures the stability of the formwork support.

[0044] Furthermore, the adjustment assembly 22 includes a first rod group 221 and a second rod group 222. The first rod group 221 is disposed between the gantry trolley 1 and the precast template 21, and the second rod group 222 is disposed between the hydraulic support module 3 and the precast template 21.

[0045] The first rod group 221 is mainly used to adjust the position and angle of the precast template 21, and the second rod group 222 is mainly used to support the precast template 21 during the pouring of the low side wall. Together, they work to complete the synchronous construction with the secondary lining.

[0046] Furthermore, the first rod assembly 221 includes a first transverse rod 2211 and a second transverse rod 2212. One end of the first transverse rod 2211 is hinged to the gantry trolley 1, and the other end is hinged to the first hinge member 4. One end of the second transverse rod 2212 is hinged to the gantry trolley 1, and the other end is hinged to the second hinge member 5. Specifically, the first transverse rod 2211 is hinged at the lower part of the precast template 21 (see reference). Figure 2 The second transverse bar 2212 is hinged at a higher point on the precast template 21 (see reference). Figure 2 Since both ends of the first transverse rod 2211 and the second transverse rod 2212 are hinged, they can be freely adjusted according to design requirements. As for the adjustment angle, it is also subject to certain restrictions based on design requirements.

[0047] The adjustment of the first transverse bar 2211 and the second transverse bar 2212 can effectively adjust the precast template 21 to a position that meets the design requirements.

[0048] Furthermore, the second rod group 222 includes a first longitudinal rod 2221 and a second longitudinal rod 2222. One end of the first longitudinal rod 2221 is hinged to the telescopic section of the rectangular telescopic sleeve 31, and the other end is hinged to the first hinge member 4. One end of the second longitudinal rod 2222 is hinged to the telescopic section of the rectangular telescopic sleeve 31, and the other end is hinged to the second hinge member 5. Specifically, as the first transverse rod 2211 and the second transverse rod 2212 are adjusted, since both ends of the first longitudinal rod 2221 and the second longitudinal rod 2222 are also hinged, and on the precast template 21, the first transverse rod 2211 and the first longitudinal rod 2221 share a hinge member, and the second transverse rod 2212 and the second longitudinal rod 2222 share a hinge member, that is to say, the second rod group 222 and the first rod group 221 can achieve effective linkage.

[0049] Adjusting the first longitudinal rod 2221 and the second longitudinal rod 2222 enables the hydraulic support module 3 to better support the precast template 21.

[0050] Specifically, in this embodiment, the hydraulic support module 3 is mounted on the gantry trolley 1, and the hydraulic support module 3 is used to support the low side wall template module 2.

[0051] Furthermore, the hydraulic support module 3 includes a rectangular telescopic sleeve 31 and a hydraulic telescopic rod 32. The hydraulic telescopic rod 32 can drive the rectangular telescopic sleeve 31 to extend and retract. The fixed section of the rectangular telescopic sleeve 31 is fixedly connected to the gantry trolley 1, and the telescopic section of the rectangular telescopic sleeve 31 is slidably connected to the fixed section. One end of the hydraulic telescopic rod 32 is connected to the fixed section of the rectangular telescopic sleeve 31, and the other end is connected to the telescopic section of the rectangular telescopic sleeve 31.

[0052] This allows the hydraulic support module 3 to effectively adapt to changes in the low side wall formwork module 2, thereby effectively supporting the low side wall formwork module 2.

[0053] Meanwhile, in order to ensure the stability of the rectangular telescopic sleeve 31, a reinforcing tie rod 7 is also provided. One end of the reinforcing tie rod 7 is hinged to the gantry trolley 1, and the other end is hinged to the telescopic section of the rectangular telescopic sleeve 31.

[0054] The reinforced tie rod 7 further enhances the stability of the rectangular telescopic sleeve 31.

[0055] The implementation principle of the synchronous construction support system for the low sidewall of a shield tunnel according to this application embodiment is as follows: The synchronous construction support system for the low sidewall of this application is configured as a combination of a gantry trolley 1, a low sidewall formwork module 2, and a hydraulic support module 3. This allows the gantry trolley 1 to be used to adjust the low sidewall formwork module 2 during the construction of the secondary lining of the shield tunnel. Simultaneously, the hydraulic support module 3 can effectively adjust the low sidewall formwork module 2. In other words, the gantry trolley 1 not only plays a role during the construction of the secondary lining but also provides effective support for the construction of the low sidewall simultaneously. This provides the conditions for the synchronous construction of the low sidewall and the secondary lining, ensuring the continuity of the shield tunnel construction process, improving the efficiency of the secondary lining construction, and thus saving construction costs. Therefore, this application has strong promotional and application value.

[0056] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A low wall synchronous construction support system for a shield tunnel, characterized in that, include: A gantry trolley (1) is installed inside the tunnel; The low side wall formwork module (2) is rotatably connected to the gantry trolley (1). The low side wall formwork module (2) can support the low side wall formwork during the concrete pouring process of the low side wall. A hydraulic support module (3) is installed on the gantry trolley (1) and is used to support the low side wall template module (2).

2. The low sidewall synchronous construction support system for a shield tunnel according to claim 1, wherein, The low side wall template module (2) includes a prefabricated template (21) and an adjustment component (22). The prefabricated template (21) is prefabricated according to design requirements, and the adjustment component (22) is used to adjust the support position of the prefabricated template (21).

3. The low wall synchronous construction support system for a shield tunnel according to claim 2, wherein, The adjustment assembly (22) includes a first rod group (221) and a second rod group (222). The first rod group (221) is disposed between the gantry trolley (1) and the precast template (21), and the second rod group (222) is disposed between the hydraulic support module (3) and the precast template (21).

4. The short sidewall synchronous construction support system for a shield tunnel according to claim 3, wherein, The hydraulic support module (3) includes a rectangular telescopic sleeve (31) and a hydraulic telescopic rod (32). The hydraulic telescopic rod (32) can drive the rectangular telescopic sleeve (31) to extend and retract. The fixed section of the rectangular telescopic sleeve (31) is fixedly connected to the gantry trolley (1), and the telescopic section of the rectangular telescopic sleeve (31) is slidably connected to the fixed section. One end of the hydraulic telescopic rod (32) is connected to the fixed section of the rectangular telescopic sleeve (31), and the other end is connected to the telescopic section of the rectangular telescopic sleeve (31).

5. The low wall synchronous construction support system for a shield tunnel according to claim 4, wherein, The first rod group (221) includes a first transverse rod (2211) and a second transverse rod (2212). The prefabricated template (21) is provided with a first hinge (4) and a second hinge (5). One end of the first transverse rod (2211) is hinged to the gantry trolley (1), and the other end is hinged to the first hinge (4). One end of the second transverse rod (2212) is hinged to the gantry trolley (1), and the other end is hinged to the second hinge (5).

6. The short wall synchronous construction support system for a shield tunnel according to claim 5, wherein, The second rod group (222) includes a first longitudinal rod (2221) and a second longitudinal rod (2222). One end of the first longitudinal rod (2221) is hinged to the telescopic section of the rectangular telescopic sleeve (31), and the other end is hinged to the first hinge member (4). One end of the second longitudinal rod (2222) is hinged to the telescopic section of the rectangular telescopic sleeve (31), and the other end is hinged to the second hinge member (5).

7. The short wall synchronous construction support system for a shield tunnel according to claim 5, wherein, Both the first hinge (4) and the second hinge (5) include H-beams (6).

8. The low wall synchronous construction support system for a shield tunnel according to claim 4, wherein, A reinforcing tie rod (7) is also provided, one end of which is hinged to the gantry trolley (1) and the other end is hinged to the telescopic section of the rectangular telescopic sleeve (31).

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