Pipe piece for bypass channel, pipe piece assembling ring set and tunnel structure

Abstract

The utility model provides a duct piece for a bypass channel, a duct piece assembling ring set and a tunnel structure, and relates to the technical field of tunnel construction. The duct piece for the bypass channel comprises a hole opening area, a duct piece body and a duct piece body, and the first matching end is arranged on the peripheral side of the hole opening area and is used for being connected and matched with the top sealing block. The duct piece is particularly suitable for construction of bypass channels in complex, narrow and small-curve turning scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, and in particular to a pipe segment for a bypass channel, a pipe segment assembly ring group, and a tunnel structure. Background Art

[0002] With the continuous development of urban construction, major cities in China have begun to develop subways and urban underground spaces and transform urban water supply and drainage systems. Among them, shield construction technology is a widely used method for underground tunnel construction. The pipe segment is an important assembly component of shield construction and also the inner barrier of the tunnel. It is responsible for resisting soil pressure, groundwater pressure and some special loads. As the permanent lining structure of the shield tunnel, the pipe segment is directly related to the overall quality and safety of the tunnel, and affects the waterproof performance and durability of the tunnel.

[0003] At present, the lining used in the prior art related to shield tunneling is mainly prefabricated concrete segments or steel segments. Multiple segments are assembled radially to form a circular ring assembly group, and multiple ring assembly groups are arranged axially to form a tunnel lining structure. Whether it is a railway tunnel, a highway tunnel, an underwater tunnel, a water conservancy tunnel, a mining tunnel, or a tunnel required for urban infrastructure construction such as water supply, power supply, rail transit, pipe gallery, sewage treatment, etc., these tunnels often need to open a side channel above the main tunnel in actual construction (for example: a connecting channel and a branch tunnel in a rail transit tunnel). Due to the complex and changeable tunnel construction environment, in some scenarios (especially when the space is narrow or the side channel needs to be set at a small curve turning position), the segment structure and assembly method in the prior art cannot meet the assembly requirements of special scenarios, and it is easy for the segments to be misaligned and broken.

[0004] Therefore, how to design the corresponding segment structure and assembly ring group structure for the above special scenarios to avoid segment misalignment and breakage has become a technical problem that technicians in this field need to solve. Utility Model Content

[0005] The technical problem solved by the utility model is: how to provide a pipe segment structure and an assembled ring group structure which is easy to construct, not prone to misalignment and breakage for special construction scenarios such as complex and narrow spaces, or where a bypass channel needs to be set at a small curve turning position.

[0006] To solve the above problems, the utility model provides a pipe segment for a bypass channel, the pipe segment comprising: an opening area, the opening area is used for opening holes for setting up the bypass channel; the first mating end is arranged on the outer peripheral side of the opening area and is used for connecting and mating with the capping block.

[0007] The above technical solution uses segment linings with a connecting block structure as special segment linings for the side channel, enabling it to open holes in the left and right turning directions, thereby solving the problem in the prior art that when installing special lining rings for the left and right lines on a curve, a single tunnel in the direction opposite to the turning direction cannot be assembled normally, that is, the current situation where the turning direction of the special lining ring segment is always opposite to the direction of the opening. The segment linings provided by the above technical solution are particularly suitable for the situation where the side channel needs to be set at a small curve turning position, and it can avoid problems such as misalignment and fragmentation of the segment linings due to abnormal assembly.

[0008] In the above technical solution of the present utility model, the first mating end has a first mating surface for fitting with the closure block, and the first mating surface is inclined relative to the radial direction of the segment lining.

[0009] Since the closure block has differences in shape and structure compared with the standard block, therefore, the first mating end for connecting and mating with the closure block in the above technical solution has a shape and structure that is mutually adapted to the wedge-shaped closure block, so as to achieve the fitting connection between the segment lining and the closure block.

[0010] In any of the above technical solutions of the present utility model, at least a part of the side of the segment lining where the first mating end is provided is formed into a quasi-sector ring structure, the outer ring of the quasi-sector ring structure protrudes relative to the standard sector ring structure, and / or the inner ring of the quasi-sector ring structure contracts relative to the standard sector ring structure.

[0011] In view of the fact that the closure block is not a standard sector ring structure, therefore, at least a part of the side of the segment lining in the above technical solution where the first mating end is provided is also formed into a quasi-sector ring structure adapted to the closure block. The above structure can be adapted to the structure where the outer ring of the closure block contracts towards the center and the inner ring protrudes towards both sides relative to the standard sector ring structure.

[0012] In any of the above technical solutions of the present utility model, the angle between the first mating surface and the radial direction of the segment lining is 1° to 10°.

[0013] Setting the angle between the first mating surface and the radial direction of the segment lining to 1° to 10° can make it adapt to the inclination angle of the closure block. The closure block with the corresponding inclination angle is easy to install and makes the entire segment lining assembly group more stable after assembly.

[0014] In any of the above technical solutions of the present utility model, the angle between the first mating surface and the radial direction of the segment lining is 3°.

[0015] Setting the angle between the first mating surface and the radial direction of the segment lining to 1° to 10° can make it further adapt to the inclination angle of the closure block.

[0016] In any of the above technical solutions of the present utility model, the segment further includes: a second mating end, which is provided on a side away from the first mating end and is used for connecting and mating with a standard block.

[0017] The way that the first mating end is connected and mated with the closure block, and the second mating end is connected and mated with the standard block makes the segment in the above technical solutions convenient for installation and construction.

[0018] In any of the above technical solutions of the present utility model, the second mating end has a second mating surface for mating with the standard block, and the second mating surface coincides with the radial direction of the segment.

[0019] Since the standard block is formed in a sector-annular shape in terms of its shape and structure, the second mating surface on the second mating end for connecting and mating with the standard block needs to be set to coincide with the radial direction of the segment.

[0020] The present utility model also provides a segment assembly ring group for a bypass channel, and the segment assembly ring group includes: segments for a bypass channel according to any of the above technical solutions.

[0021] The segment assembly ring group of the present utility model includes segments for a bypass channel according to any of the above technical solutions, so it has all the beneficial effects of the segments for a bypass channel according to any of the above technical solutions, which will not be elaborated here.

[0022] In the above technical solution of the present utility model, the segment assembly ring group further includes: a closure block; a connecting block; a plurality of standard blocks; wherein, the segment, the closure block, the connecting block, and the plurality of standard blocks are sequentially connected to form at least part of the circular segment assembly ring group.

[0023] The present utility model also provides a tunnel structure, and the tunnel structure includes: a plurality of segment assembly ring groups arranged along the axial direction; wherein, at least any one of the plurality of segment assembly ring groups is a segment assembly ring group for a bypass channel according to any of the above technical solutions.

[0024] The tunnel structure of the present utility model includes a segment assembly ring group for a bypass channel according to any of the above technical solutions, so it has all the beneficial effects of the segment assembly ring group for a bypass channel according to any of the above technical solutions, which will not be elaborated here. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the segment assembly ring group provided by an embodiment of the present utility model in the side view direction;

[0026] Figure 2 It is a schematic structural diagram of the segment provided by an embodiment of the present utility model in the side view direction;

[0027] Figure 3 ForFigure 1 Partial enlarged view of part A.

[0028] Description of reference numerals:

[0029] Opening area - 110; first mating end - 120; first fitting surface - 121; second mating end - 130; second fitting surface - 131; capping block - 200; multiple standard blocks - 300; connecting block - 400; included angle - α. Detailed implementation manners

[0030] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description will be given to specific embodiments of the present utility model with reference to the accompanying drawings.

[0031] The present utility model provides a segment for a bypass channel, which is applicable as a special segment for opening a bypass channel in shield tunneling construction. During the construction of a tunnel (such as a subway tunnel, a water supply and drainage system, etc.), multiple segments need to be radially assembled to form an annular assembled ring group, and multiple assembled ring groups are axially arranged to form a lining structure of the tunnel.

[0032] In the entire annular segment assembled ring group, it usually includes standard blocks, capping blocks, and connecting blocks. Among them, the standard block is a segment with standard dimensions, generally with multiple numbers, in a sector-ring shape, and the cross-sections at both ends coincide with the radial direction of the segment. The capping block is the last inserted capping segment (also called the K block). For the convenience of construction, its shape is similar to a sector-ring, the cross-sections at both ends are inclined with respect to the radial direction of the segment, and the inner peripheral edge extends and prolongs towards both sides, while the outer peripheral edge contracts and shortens towards the middle. The connecting block is used to connect the standard block and the capping block. One end of the connecting block is shaped to fit the standard block, and the other end is shaped to fit the capping block. Correspondingly, in a complete assembled ring group, one capping block, two connecting blocks respectively located on both sides of the capping block, and several standard blocks are required.

[0033] In addition, for the segments installed at the side channels of tunnels (especially subway tunnels), they need to be broken or cut after assembly to create openings for the side channels. The segments used at the positions of the side channel openings are called special segments. In the prior art, a circular opening is usually formed on one special segment, or semi-circular openings are respectively formed on two special segments and then assembled into a circular opening. In either case, the special segments in the prior art are usually used as standard segments, and their two ends are respectively connected and cooperated with one adjacent standard segment each. In this situation, if the side channel opening is a right-opening, the closure segment is on the left; conversely, if the side channel opening is a left-opening, the closure segment is on the right. The setting method of using special segments as standard segments in the prior art will result in opposite wedge amounts in the left and right lines, that is, opposite line turning directions. Therefore, if the side channel needs to be set at a small-curve turning position, the direction of the segment wedge amount will be opposite to the actual line direction of the segments, resulting in misalignment and fragmentation of the segments due to too small shield tail clearance.

[0034] In order to avoid misalignment and fragmentation of the segments in special construction scenarios (especially when the space is complex and narrow, or when the side channel needs to be set at a small-curve turning position), the present utility model improves the segment structure and assembly method in the prior art.

[0035] Specifically, as Figure 1 and Figure 2 shown, the segment of the present utility model includes: an opening area 110, which is used for opening an opening for setting a side channel; a first mating end 120, which is arranged on the outer peripheral side of the opening area 110 and is used for connecting and cooperating with the closure segment 200.

[0036] As described above, the segment of the present utility model is a special segment for opening a side channel. The segment of the present utility model can be a precast concrete segment, or a steel segment, or a concrete cast segment with a pre-embedded steel reinforcement cage. During the tunnel construction process, the construction personnel can form a circular opening on one special segment, or respectively form semi-circular openings on two special segments and then assemble them into a circular opening. Correspondingly, the opening area 110 on the segment of the present utility model can be a circular or quasi-circular opening formed in the center, or a semi-circular or quasi-semi-circular opening formed on the edge. The opening process of the segment is carried out during the excavation and laying of the tunnel. In order to facilitate the opening, a cutting part that is easy to cut and divide can be arranged in the opening area 110 of the segment. The cutting part is made of a material that is easy to cut and divide.

[0037] In the segment of the present utility model, the first mating end 120 is used for connecting and mating with the closure segment 200. For the case where the opening area 110 is located in the central area of the segment and is formed into a circle, the first mating end 120 can be located on the upper side edge or the lower side edge of the segment. For the case where the opening area 110 is located on one side edge of the segment and is formed into a semi-circle, the first mating end 120 needs to be located on the opposite side edge relative to the opening area 110.

[0038] As described above, there are differences in the shape and structure between the closure segment and the standard segment. The closure segment is not a standard fan-shaped ring structure, but a wedge-shaped structure with an inner ring longer than the inner ring of the standard fan-shaped ring structure and an outer ring shorter than the outer ring of the standard fan-shaped ring structure. This wedge-shaped structure is more convenient for the installation of the closure segment and can also ensure the stability of the segment assembly ring group.

[0039] It can be understood that in the present utility model, the first mating end 120 for connecting and mating with the closure segment 200 is adapted to the wedge-shaped closure segment 200 in terms of shape and structure. In other words, the segment of the present utility model serves both as a special segment for opening a side channel and as a connecting block for connecting and mating with the closure segment 200, directly fitting and connecting with the closure segment 200.

[0040] The above structural arrangement is particularly applicable to the construction scenario where the side channel needs to be set at a small curve turning position, which can avoid the problem of too small shield tail clearance of the segment caused by installing a special lining ring, thus preventing the occurrence of dislocation and fragmentation.

[0041] As Figure 1 and Figure 2 shown, the segment assembly ring group of the present utility model includes two special segments that are mutually assembled to form a side channel. Among them, the side channel is opened on the right side of the tunnel. In the two mutually assembled special segments, the special segment located in the upper part is provided with the first mating end 120. The first mating end 120 fits with the closure segment 200 and is connected through a structure such as a stud. One end of the closure segment 200 away from the first mating end 120 fits and connects with the connecting block 400. One end of the connecting block 400 away from the closure segment 200 fits and connects with a standard segment 300, and this standard segment 300 continues to fit and connect with another standard segment 300 until the last standard segment 300 is connected to the special segment located in the lower part.

[0042] It should be noted that the above is a description of each segment in the segment assembly ring group starting from the special segment located in the upper part and along the counterclockwise direction for the purpose of clearly describing the segment assembly ring group of the present utility model. It is described in the order of spatial position, but the actual paving order is not like this. In actual paving, the closure segment needs to be assembled last.

[0043] To achieve the cooperation between the first mating end 120 and the capping block 200, the first mating end 120 has a first mating surface 121 for fitting with the capping block 200, and the first mating surface 121 is inclined with respect to the radial direction of the segment.

[0044] The reason for the above design is that the peripheral edge of the side surface of the capping block 200 is not arranged along the radial direction of the segment, but is inclined at a certain angle. Correspondingly, the inclination angle of the first mating surface 121 is the same as the inclination angle of the peripheral edge of the side surface of the capping block 200, and the inclination directions are opposite.

[0045] See Figure 3 , in some embodiments of the present utility model, the included angle α between the first mating surface 121 and the radial direction of the segment is 1° to 10°. In some preferred embodiments of the present utility model, the included angle α between the first mating surface 121 and the radial direction of the segment is 1° to 5°. In some further preferred embodiments of the present utility model, the included angle α between the first mating surface 121 and the radial direction of the segment is 3°.

[0046] It should be noted that at least part of the first mating surface 121 is a plane, but the positions where the first mating end 120 and the capping block 200 cooperate with each other are not completely in contact. The first mating surface 121 may also be provided with structures such as concave-convex seams or chamfers. Corresponding concave-convex seams or chamfer structures may be provided on the corresponding cross-section of the capping block 200 that fits with the first mating surface 121. The concave-convex seams are convenient for filling adhesives or waterproof materials, and the chamfer structure can facilitate the installation alignment of the capping block 200.

[0047] In the present utility model, the standard fan-shaped ring structure refers to the structure formed by a part of the ring intercepted by a sector, its outer diameter is equal to the radius of the ring, and its inner diameter is equal to the radius of the sector. For the standard fan-shaped ring structure, the straight lines where its two side edges are located coincide with the radial direction of the fan-shaped ring. In the present utility model, the quasi-fan-shaped ring structure refers to a non-standard fan-shaped ring structure. The difference is that the straight lines where its two side edges are located do not coincide with the radial direction of the fan-shaped ring.

[0048] In view of the fact that the capping block 200 is not a standard fan-shaped ring structure, at least part of the segment of the present utility model provided with the first mating end 120 is also formed into a quasi-fan-shaped ring structure adapted to the capping block 200. On the first mating end 120, the outer ring of the quasi-fan-shaped ring structure protrudes with respect to the standard fan-shaped ring structure, and / or the inner ring of the quasi-fan-shaped ring structure contracts with respect to the standard fan-shaped ring structure. The above structure can adapt to the structure of the capping block 200 where the outer ring contracts towards the center and the inner ring protrudes towards both sides with respect to the standard fan-shaped ring structure.

[0049] In another embodiment of the present utility model, the segment assembly ring group includes a special segment for forming a bypass channel as a whole, and its opening area 110 is circular. Taking the bypass channel being opened on the right side of the tunnel as an example, for the above situation, the first mating end 120 is arranged on the upper edge of the segment, and it is also in fitting connection with the closure segment 200. Describing in the order of spatial positions, the segment assembly ring group sequentially includes a special segment, a closure segment, a connecting segment, and a plurality of standard segments in the counterclockwise direction, and the last standard segment is in fitting connection with the lower edge of the segment. As Figure 3 shown, the segment further includes: a second mating end 130, which is arranged on the side far from the first mating end 120 and is used for connecting and mating with the standard segment 300. Correspondingly, the second mating end 130 has a second mating surface 131 for fitting with the standard segment 300, and the second mating surface 131 coincides with the radial direction of the segment to achieve the fitting connection with the standard segment 300.

[0050] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the scope defined by the claims.

Claims

1. A segment for a side channel, characterized in that, The segment comprises: An opening area (110) which is used for opening holes for arranging the side channel; A first mating end (120) which is arranged on the outer peripheral side of the opening area (110) and is used for connecting and mating with the closure block (200).

2. The segment according to claim 1, characterized in that, The first mating end (120) has a first mating surface (121) for mating with the closure block (200), and the first mating surface (121) is inclined with respect to the radial direction of the segment.

3. The segment according to claim 2, characterized in that, At least part of the side of the segment where the first mating end (120) is arranged is formed into a quasi-sector ring structure, the outer ring of the quasi-sector ring structure protrudes with respect to the standard sector ring structure, and / or the inner ring of the quasi-sector ring structure contracts with respect to the standard sector ring structure.

4. The segment according to claim 3, characterized in that, The angle (α) between the first mating surface (121) and the radial direction of the segment is 1° to 10°.

5. The segment according to claim 4, characterized in that, The angle (α) between the first mating surface (121) and the radial direction of the segment is 3°.

6. The segment according to any one of claims 1 to 5, characterized in that, The segment further comprises: A second mating end (130) which is arranged on the side far from the first mating end (120) and is used for connecting and mating with the standard block (300).

7. The segment according to claim 6, characterized in that, The second mating end (130) has a second mating surface (131) for mating with the standard block (300), and the second mating surface (131) coincides with the radial direction of the segment.

8. A segment assembly ring group for a side channel, characterized in that, The segment assembly ring group comprises: the segment for the side channel according to any one of claims 1 to 7.

9. The segment assembly ring group according to claim 8, characterized in that, The segment assembly ring group further comprises: A closure block (200); A connecting block (400); A plurality of standard blocks (300); Wherein, the segment, the closure block (200), the connecting block (400), and the plurality of standard blocks (300) are sequentially connected to form at least part of the circular segment assembly ring group.

10. A tunnel structure, characterized in that, The tunnel structure comprises: A plurality of segment assembly ring groups arranged axially; Wherein, at least any one of the plurality of segment assembly ring groups is the segment assembly ring group for the side channel according to any one of claims 8 to 9.

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