Shield butt joint steel shell concrete composite structure

Abstract

The utility model discloses a shield butt joint steel shell concrete composite structure, which relates to the technical field of tunnel construction, and comprises a butt joint section first-stage assembly and a butt joint section second-stage assembly, the front cutter ring beam and the rear cutter ring beam are welded to the front shield shell and the rear shield shell correspondingly to form an integral structure, a water stop steel plate is welded between the front cutter ring beam and the rear cutter ring beam, first slurry bin partition plates are arranged in the front shield shell and the rear shield shell correspondingly, inner panels are welded in the front shield shell and the rear shield shell, and second slurry bin partition plates are arranged in the inner panels. A first longitudinal rib plate is arranged on the outer side of the inner panel, and a T-shaped annular rib plate is welded to the inner side of the inner panel. A firm overall structure is formed through precise welding and assembly configuration, the waterproof performance is enhanced, meanwhile, the internal supporting design is optimized, the rigidity and the concrete flowability are improved, and the bearing capacity and the construction safety are enhanced through function division.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel construction technical field especially shield butt joint steel shell concrete combination structure. BACKGROUND

[0002] With the development and utilization of urban underground space, shield method construction is more and more widely used in subway, tunnel and other projects. However, when shield butt joint operation is carried out under complex geological conditions, how to ensure the strength, stability and waterproof performance of the structure becomes a key challenge.

[0003] Traditional shield butt joint method often has problems such as insufficient structural rigidity, poor waterproof effect, low construction efficiency, etc., which is difficult to meet the high requirements of modern engineering on safety and reliability. SUMMARY

[0004] The utility model provides shield butt joint steel shell concrete combination structure, including butt joint section first stage subassembly and butt joint section second stage subassembly, wherein: butt joint section first stage subassembly includes preceding shield shell and following shield shell, preceding cutterhead ring beam and following cutterhead ring beam are welded with preceding shield shell and following shield shell respectively, form integral structure, preceding cutterhead ring beam and following cutterhead ring beam are welded with water stop steel sheet between, preceding shield shell and following shield shell all are provided with slurry bin partition plate no. 1 in, preceding shield shell and following shield shell are welded with inner panel in, inner panel outer side is provided with longitudinal rib plate no. 1, inner panel inner side is welded with T shape annular rib plate,

[0005] Butt joint section second stage subassembly includes second stage shield shell, second stage cutterhead ring beam is welded on one side of second stage shield shell, slurry bin partition plate no. 2, bubble bin partition plate, jack support, reinforcing ring rib no. 1, reinforcing ring rib no. 2 and stop steel plate are welded in second stage shield shell in proper order, longitudinal rib plate no. 2 is welded horizontally in second stage shield shell.

[0006] Preferably, the inner panel of the preceding shield shell and the following shield shell and the inner panel in the second stage shield shell are both pre-drilled with grouting holes and grouting holes, and filled with C40 self-compacting concrete inside.

[0007] Preferably, the inner panel is pre-drilled with 4 layers of grouting holes and 56 layers of grouting holes, and the hole positions are respectively arranged at the top of each layer and the top of each bin.

[0008] Preferably, another water stop steel plate is arranged between the preceding shield shell and the preceding cutterhead ring beam.

[0009] Preferably, an oval-shaped opening is formed on the longitudinal rib plate no. 1.

[0010] Preferably, exhaust holes are formed on the slurry bin partition plate no. 1, the slurry bin partition plate no. 2 and the bubble bin partition plate.

[0011] Preferably, an inner steel plate is welded on the inner wall surface of the preceding shield shell and the water stop steel plate.

[0012] Preferably, the longitudinal rib plate is provided with 56 ribs, with a thickness of 80 mm and a height of 600 mm.

[0013] Preferably, the concrete of the butt joint section first assembly is filled from top to bottom in four times, and the concrete of the butt joint section second assembly is filled from bottom to top in four times.

[0014] Preferably, the T-shaped circumferential rib plate is provided with 10 ribs.

[0015] Compared with the prior art, the shield butt joint steel shell concrete combined structure provided by the embodiment of the utility model has the advantages that:

[0016] 1. The utility model discloses a first shield shell and a second shield shell are welded with a first cutter ring beam and a second cutter ring beam respectively to form a firm whole structure, and a water stop steel plate is further arranged to enhance the waterproof effect. The grouting hole and the grouting hole reserved on the inner panel, and the T-shaped circumferential rib plate and the longitudinal rib plate one not only increase the rigidity of the structure, but also optimize the liquidity in the concrete filling process. In addition, the addition of the mud water tank partition two, the bubble tank partition and other components in the second assembly further improves the functional partition and the bearing capacity of the structure, and ensures the safety and reliability of construction under complex geological conditions.

[0017] 2. The utility model discloses that the first assembly and the second assembly of the butt joint section are filled with C40 self-compacting concrete in layers, so that the concrete filling is more uniform and dense, and the voids and defects are reduced. On the other hand, by reasonably arranging the grouting hole and the grouting hole, the post-grouting operation can be conveniently carried out, the sealing property and the waterproof performance of the structure are ensured, and the service life of the project is prolonged. The application of the retreat prevention steel plate effectively prevents the structure from slipping and ensures the construction safety. The whole system is designed comprehensively, is convenient for construction and easy to maintain, greatly reduces the maintenance cost in long-term operation, and embodies good economic benefit and social benefit. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope. For ordinary skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 It is the whole structure three-dimensional schematic view of the embodiment of the utility model;

[0020] Figure 2 It is the butt joint section first assembly three-dimensional structure schematic view of the embodiment of the utility model;

[0021] Figure 3 It is the butt joint section two period component structure three-dimensional schematic view of the utility model embodiment;

[0022] Figure 4 It is the local schematic view of the utility model embodiment's first cutter head ring beam and the like structure;

[0023] Figure 5 It is the local schematic view of the T-shaped ring rib plate and the like structure of the utility model embodiment;

[0024] Figure 6 It is the opening structure plane schematic view of the utility model embodiment;

[0025] Figure 7 It is the butt joint section one period component filling state schematic view of the utility model embodiment;

[0026] Figure 8 It is the butt joint section two period component filling state schematic view of the utility model embodiment.

[0027] Reference signs:

[0028] 1, first shield shell; 2, second shield shell; 3, water stop steel plate; 4, first cutter head ring beam; 5, second cutter head ring beam; 6, inner side steel plate; 7, slurry tank partition plate one; 8, inner panel; 9, T-shaped ring rib plate; 10, longitudinal rib plate one; 11, opening; 12, grouting hole; 13, grouting hole; 14, second period shield shell; 15, slurry tank partition plate two; 16, bubble tank partition plate; 17, jack support; 18, first reinforcing ring rib; 19, second reinforcing ring rib; 20, longitudinal rib plate two; 21, retreat stop steel plate; 22, second period cutter head ring beam. DETAILED DESCRIPTION

[0029] Some embodiments of the utility model will be described in detail below with reference to the drawings. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0030] Please refer to Figures 1-8 The utility model embodiment provides a shield butt joint steel shell concrete combined structure, including butt joint section one period component and butt joint section two period component, wherein:

[0031] The butt joint section one period component includes first shield shell 1 and second shield shell 2, as basic components, the thickness is 80mm, first cutter head ring beam 4 and second cutter head ring beam 5 are welded with first shield shell 1 and second shield shell 2 respectively, form integral structure.

[0032] Two 8mm+34mm thick water-stop steel plates 3 are welded between the leading shield 1 and the leading cutterhead ring beam 4 and between the leading cutterhead ring beam 4 and the trailing cutterhead ring beam 5, and one 16mm thick water-stop steel plate 3 is welded between the trailing shield 2 and the trailing cutterhead ring beam 5 to enhance the waterproof effect, and the two layers of water-stop steel plates 3 are filled with epoxy resin grouting material, and the outer layer of water-stop steel plate 3 is filled with micro-expanding cement and a heat insulation layer.

[0033] The leading shield 1 and the trailing shield 2 are both provided with a slurry chamber partition plate one 7 for separating different functional areas, and the leading shield 1 and the trailing shield 2 are both welded with an inner panel 8 with a thickness of 16mm, and the inner panel 8 of the leading shield 1 and the trailing shield 2 and the inner panel 8 in the secondary shield 14 are both provided with grouting holes 12 and grouting holes 13, and are filled with C40 self-compacting concrete, and the inner panel 8 is provided with 4 layers of grouting holes 13 and 56 layers of grouting holes 12, and the hole positions are respectively arranged at the top of each layer and the top of each chamber.

[0034] The inner panel 8 of the secondary assembly of the butt joint section is 125.3mm away from the edge of the longitudinal rib plate two 20, and the reserved space can increase the flowability of the filling concrete.

[0035] The outer side of the inner panel 8 is provided with a longitudinal rib plate one 10, and four elliptical openings 11 are formed in the longitudinal rib plate one 10 to increase the flowability of the filling concrete, wherein the sizes of two openings 11 are 400x200mm, and the sizes of the other two openings 11 are 200x100mm.

[0036] The inner side of the inner panel 8 is welded with a T-shaped circumferential rib plate 9, and the T-shaped circumferential rib plate 9 is provided with 10 rows to enhance the structural rigidity.

[0037] The inner side of the leading shield 1 and the water-stop steel plate 3 is welded with an inner side steel plate 6.

[0038] The secondary assembly of the butt joint section includes a secondary shield 14, and the secondary shield 14 is welded with a secondary cutterhead ring beam 22 on one side, and the secondary shield 14 is sequentially welded with a slurry chamber partition plate two 15, a bubble chamber partition plate 16, a jack support 17, a reinforcing ring rib one 18, a reinforcing ring rib two 19 and a retreat-stop steel plate 21, and the secondary shield 14 is transversely welded with a longitudinal rib plate two 20, and the slurry chamber partition plate two 15 and the bubble chamber partition plate 16 are used to further separate different functional areas, the thickness of the jack support 17 is 100mm, which provides support and enhances the structural bearing capacity, the reinforcing ring rib one 18 and the reinforcing ring rib two 19 enhance the structural rigidity, and the retreat-stop steel plate 21 has a total of 196 rows to prevent structural sliding and ensure construction safety.

[0039] The longitudinal rib plate two 20 is provided with 56 rows, and the thickness is 80mm and the height is 600mm.

[0040] The exhaust holes are arranged on the slurry bin partition one 7, the slurry bin partition two 15 and the bubble bin partition 16, and the exhaust holes can effectively exhaust the air in the concrete, and prevent the formation of holes or gaps. This helps to ensure the compactness and uniformity of the concrete, thereby improving the overall strength and durability of the structure.

[0041] The concrete of the first-stage assembly of the butt joint section is filled from top to bottom in four times, and the concrete of the second-stage assembly of the butt joint section is filled from bottom to top in four times.

[0042] In summary, the working principle of the shield butt joint steel shell concrete combined structure is as follows: the leading shield shell 1 and the trailing shield shell 2 are installed and welded with the leading cutter ring beam 4 and the trailing cutter ring beam 5, the water stop steel plate 3 is arranged to enhance waterproofness, and the epoxy resin and the micro-expansion cement are filled; the slurry bin partition one 7 is arranged inside to separate the area, the inner panel 8 is welded and the grouting hole 12 and the grouting hole 13 are reserved, and the C40 self-compacting concrete is filled; in the second-stage assembly, the space between the inner panel 8 and the longitudinal rib plate two 20 is reserved to increase the flowability of the concrete, the second-stage shield shell 14 is sequentially welded with a plurality of assemblies to enhance the structural rigidity and the bearing capacity, and finally, the concrete is filled in stages to complete the construction.

[0043] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A combined structure of a shield butt joint steel shell and concrete, characterized in that, The utility model relates to a shield tunneling machine, and particularly relates to a shield tunneling machine with a two-stage docking section. The two-stage docking section assembly comprises a first-stage docking section assembly and a second-stage docking section assembly. The first-stage docking section assembly comprises a leading shield shell (1), a trailing shield shell (2), a leading cutter ring beam (4) and a trailing cutter ring beam (5).

2. The combined structure of the shield interface steel shell and concrete according to claim 1, wherein, The trailing shield shell (2) is welded with an inner panel (8).

3. The combined structure of the shield connection steel shell and concrete according to claim 2, wherein, The inner panel (8) is provided with a longitudinal rib plate (10) on the outer side and a T-shaped circumferential rib plate (9) on the inner side.

4. The combined structure of the shield interface steel shell and concrete according to claim 1, wherein, The second-stage docking section assembly comprises a second-stage shield shell (14).

5. The combined structure of the shield interface steel shell and concrete according to claim 4, wherein, The second-stage shield shell (14) is welded with a second-stage cutter ring beam (22) on one side.

6. The combined structure of the shield interface steel shell and concrete according to claim 5, wherein, The second-stage shield shell (14) is sequentially welded with a slurry tank partition plate (15), a bubble tank partition plate (16), a jack support (17), a reinforcing ring rib (18), a reinforcing ring rib (19) and a retreat-stop steel plate (21) in the second-stage shield shell (14).

7. The combined structure of the shield interface steel shell and concrete according to claim 1, wherein, The second-stage shield shell (14) is transversely welded with a longitudinal rib plate (20).

8. The combined structure of the shield interface steel shell and concrete according to claim 1, wherein, The inner panel (8) of the leading shield shell (1) and the trailing shield shell (2) and the inner panel (8) in the second-stage shield shell (14) are both provided with grouting holes (12) and grouting holes (13) and filled with C40 self-compacting concrete.

9. The combined structure of the shield interface steel shell and concrete according to claim 1, wherein, The inner panel (8) is provided with four layers of grouting holes (13) and 56 layers of grouting holes (12).

10. The combined structure of the shield interface steel shell and concrete according to claim 1, wherein, The leading shield shell (1) and the leading cutter ring beam (4) are provided with another retreat-stop steel plate (3). The longitudinal rib plate (10) is provided with four oval openings (11). The slurry tank partition plate (7), the slurry tank partition plate (15) and the bubble tank partition plate (16) are all provided with exhaust holes. The leading shield shell (1) and the retreat-stop steel plate (3) are welded with an inner side steel plate (6) on the inner side wall surface. The longitudinal rib plate (20) is provided with 56 longitudinal rib plates, with a thickness of 80 mm and a height of 600 mm. The concrete of the first-stage docking section assembly is filled from top to bottom in four times. The T-shaped circumferential rib plate (9) is provided with 10 T-shaped circumferential rib plates.

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