Demountable and deformable rectangular tunnel lining structure and its construction method

Abstract

This invention relates to a detachable deformable rectangular tunnel lining structure and its construction method. The lining structure includes: a bottom lining block with a bottom connecting protrusion; a top lining block with a top connecting protrusion; side lower lining blocks located on both sides of the bottom lining block, connected to the bottom lining block via a connecting lining block, and each having a first protrusion; side upper lining blocks located on both sides of the top lining block, connected to the top lining block via a connecting lining block, each having a second protrusion, and also connected to the corresponding side lower lining blocks; a central column detachably connected between the bottom connecting protrusion and the top connecting protrusion; diagonal bracing columns detachably connected between the bottom connecting protrusion and the first protrusion, and between the top connecting protrusion and the second protrusion; and side columns detachably connected between the first and second protrusions. Due to the presence of the diagonal bracing columns and side columns, this invention allows for the removal of the central column, ensuring the structural stability and reliability of the lining structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction, in particular to a detachable deformed rectangular tunnel lining structure and a construction method thereof. BACKGROUND

[0002] At present, the class rectangular shield tunnel gradually becomes a popular construction technology for urban subway projects due to its high space utilization rate and small environmental disturbance. However, because of the particularity of the shape of the column-free class rectangular tunnel, there are still stress defects at present, and a center column needs to be set at the present stage to ensure the strength of the tunnel structure and stress, which also leads to the fact that it cannot be applied to some special projects such as subway cross-over sections with no column requirement. At present, the column-free class rectangular steel pipe piece is still under research, and there is no successful application case under the condition of deep overburden.

[0003] One of the existing technical solutions is the class rectangular shield / top pipe double-mode tunneling method, which switches to the class rectangular top pipe method at the cross-over section and switches to the class rectangular shield method at the remaining part. However, the class rectangular shield / top pipe double-mode tunneling method still has some problems. For example, when switching between the class rectangular shield and the top pipe method, an intermediate well needs to be set up for the disassembly and modification of the equipment. At the same time, the linings of the class rectangular shield and the top pipe need to be manufactured separately, which is low in efficiency and time-consuming. Therefore, there is an urgent need to provide a new solution. SUMMARY

[0004] The present application aims to overcome the defects of the prior art and provide a detachable deformed class rectangular tunnel lining structure and a construction method thereof, which solves the problems of the existing class rectangular shield lining that cannot be applied to the cross-over section due to the presence of the center column and the class rectangular shield / top pipe tunneling method that needs to set up an intermediate well and perform disassembly and modification, which is low in efficiency and time-consuming.

[0005] The technical solution to achieve the above-mentioned purpose is as follows:

[0006] The present application provides a detachable deformed class rectangular tunnel lining structure, which comprises:

[0007] A bottom lining block, on which a bottom connecting protrusion is formed and arranged upward;

[0008] A top lining block arranged opposite to the bottom lining block, on which a top connecting protrusion is formed and arranged downward, and the top connecting protrusion is arranged opposite to the bottom connecting protrusion;

[0009] A side lower lining block arranged on both sides of the bottom lining block, which is connected to the bottom lining block through a connecting lining block, and a first boss is arranged on the side of the side lower lining block close to the bottom lining block;

[0010] The side upper lining blocks arranged on both sides of the top lining block are connected with the top lining block through a connecting lining block, and a second boss is arranged on the side close to the top lining block.

[0011] A middle column is detachably connected between the bottom connecting boss and the top connecting boss.

[0012] A diagonal bracing column is detachably connected between the bottom connecting boss and the first boss and between the top connecting boss and the second boss.

[0013] A side column is detachably connected between the first boss and the second boss.

[0014] The lining structure of the present application can be constructed by the shield method, so that the cross-over section does not need to replace the shield and the top pipe, and only one shield machine is used for shield construction, and the lining structure is disassembled and deformed at the cross-over section, and due to the existence of the diagonal bracing column and the side column, the middle column can be removed to ensure the structural stability and reliability of the lining structure. The lining structure of the present application has the advantages of convenient construction process, better stress performance, better adaptability and better economy.

[0015] The further improvement of the detachable deformation type rectangular tunnel lining structure of the present application is that the end of the diagonal bracing column is formed with an enlarged head.

[0016] The further improvement of the detachable deformation type rectangular tunnel lining structure of the present application is that the end of the side column is formed with a variable cross-section structure.

[0017] The further improvement of the detachable deformation type rectangular tunnel lining structure of the present application is that the cross-section of the bottom connecting boss is trapezoidal, and the cross-section of the top connecting boss is inverted trapezoidal.

[0018] The further improvement of the detachable deformation type rectangular tunnel lining structure of the present application is that the cross-section of the first boss and the second boss is trapezoidal.

[0019] The present application also provides a construction method of the detachable deformation type rectangular tunnel lining structure, which comprises the following steps:

[0020] When the cross-over section is constructed, the detachable deformation type rectangular tunnel lining structure is provided, and the tail of the shield machine is assembled to form a segment;

[0021] After the installation of the segment is completed, the middle column is removed, and the construction is completed.

[0022] The further improvement of the construction method of the detachable deformation type rectangular tunnel lining structure is that when assembling the diagonal bracing column, the diagonal bracing column between the top connecting protrusion and the second boss is installed first, and then the diagonal bracing column between the bottom connecting protrusion and the first boss is installed.

[0023] The further improvement of the construction method of the detachable deformation type rectangular tunnel lining structure is that when assembling the diagonal bracing column, the diagonal bracing column between the top connecting protrusion and the second boss is installed first, and then the diagonal bracing column between the bottom connecting protrusion and the first boss is installed.

[0024] The further improvement of the construction method of the detachable deformation type rectangular tunnel lining structure is that when assembling the diagonal bracing column, the diagonal bracing column between the top connecting protrusion and the second boss is installed first, and then the diagonal bracing column between the bottom connecting protrusion and the first boss is installed.

[0025] The further improvement of the construction method of the detachable deformation type rectangular tunnel lining structure is that when assembling the diagonal bracing column, the diagonal bracing column between the top connecting protrusion and the second boss is installed first, and then the diagonal bracing column between the bottom connecting protrusion and the first boss is installed. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The structure diagram of the detachable deformation type rectangular tunnel lining structure in which the middle column is installed.

[0027] Figure 2 The structure diagram of the detachable deformation type rectangular tunnel lining structure in which the diagonal bracing column is installed.

[0028] Figure 3 The structure diagram of the detachable deformation type rectangular tunnel lining structure in which the edge column is installed.

[0029] Figure 4 The structure diagram of the detachable deformation type rectangular tunnel lining structure in which the middle column is removed.

[0030] Figure 5 The flow chart of the construction method of the detachable deformation type rectangular tunnel lining structure. DETAILED DESCRIPTION

[0031] The present application will be further described below in conjunction with the drawings and specific embodiments.

[0032] REFERENCE Figure 1The application provides a detachable deformation rectangular tunnel lining structure and a construction method thereof, and aims to solve the problem that the existing rectangular tunnel lining cannot be applied to a cross-over section because a middle column is needed to increase the structural performance, and to solve the problem that the use of a rectangular tunnel / jacking pipe double-mode tunneling method needs to set an intermediate well and perform disassembly and reconstruction, which is low in efficiency and long in time consumption. The lining structure can be deformed according to the use requirement, the lining structure is internally provided with a diagonal column and a side column, the structural reliability and stability requirement of the rectangular lining can be met, the middle column can be removed, and the requirement of the cross-over section can be met. The lining structure can make the cross-over section project also use the shield method, and the whole tunnel construction only needs to use one rectangular shield machine to normally assemble, without the need of setting an intermediate well and performing disassembly and reconstruction, and the construction process is convenient, and the construction efficiency can be improved. The detachable deformation rectangular tunnel lining structure and the construction method thereof will be described below in combination with the drawings.

[0033] Referring to Figure 1 , a structure schematic view of the detachable deformation rectangular tunnel lining structure of the application is shown, in which the middle column is installed. Referring to Figure 3 , a structure schematic view of the detachable deformation rectangular tunnel lining structure of the application is shown, in which the side column is installed. The detachable deformation rectangular tunnel lining structure of the application will be described below in combination with Figure 1 and Figure 3 .

[0034] As Figure 1 and Figure 3As shown, the detachable deformable rectangular tunnel lining structure of the present invention includes a bottom lining block 21, a top lining block 22, a side lower lining block 23, a connecting lining block 24, a side upper lining block 25, a central column 26, a diagonal bracing column 27, and an edge column 28. The bottom lining block 21 has an upward-facing bottom connecting protrusion 211. The top lining block 22 is opposite to the bottom lining block 21, and has a downward-facing top connecting protrusion 221 opposite to the bottom connecting protrusion 211. There are two side lower lining blocks 23, located on both sides of the bottom lining block 21. 3. The lower lining block 23 is connected to the bottom lining block 21 by a connecting lining block 24. The lower lining block 23 is provided with a first boss 231 on the side near the bottom lining block 21. There are two upper lining blocks 25 on the sides of the top lining block 22. The upper lining block 25 is connected to the top lining block 22 by a connecting lining block 24. The upper lining block 25 is provided with a second boss 251 on the side near the top lining block 22. The upper lining block 25 is connected to the corresponding lower lining block 23 on the side. Thus, the bottom lining block 21, the top lining block 22, the lower lining block 23, the connecting lining block 24 and the upper lining block 25 on the side are connected to form a rectangular tube segment. The central column 26 is detachably connected between the bottom connecting protrusion 211 and the top connecting protrusion 221; the diagonal bracing column 27 is detachably connected between the bottom connecting protrusion 211 and the first protrusion 231 and between the top connecting protrusion 221 and the second protrusion 251; the side column 28 is detachably connected between the first protrusion 231 and the second protrusion 251.

[0035] The lining structure of the present invention, due to the provision of side columns and diagonal bracing columns, allows for the removal of the central column while still ensuring high structural stability and reliability of the entire lining structure, meeting the construction requirements of the crossing section.

[0036] Furthermore, such as Figure 2 As shown, the end of the diagonal brace 27 is formed with an enlarged head. The end dimension of the enlarged head is larger than the dimension of the end that connects to the column body of the diagonal brace 27. Preferably, the cross-sectional shape of the enlarged head is trapezoidal.

[0037] The dimensions of the end face of the enlarged head are adapted to the dimensions of the surfaces that meet the corresponding bottom connecting protrusion 211, top connecting protrusion 221, first protrusion 231 and second protrusion 251, and the end face of the enlarged head is in close contact with the surfaces that meet the corresponding bottom connecting protrusion 211, top connecting protrusion 221, first protrusion 231 and second protrusion 251.

[0038] The column body connected to the two enlarged heads on the diagonal bracing column 27 is set at an angle.

[0039] Furthermore, such as Figure 3As shown, the end of the side column 28 is formed with a variable cross-section structure, and the end face of the variable cross-section structure is an inclined face, which can be tightly attached to the face of the first boss 231 and the second boss 251.

[0040] Preferably, the side column 28 is vertically arranged.

[0041] Further, as shown, the cross section of the bottom connecting protrusion 211 is in the shape of a trapezoid, and the cross section of the top connecting protrusion 221 is in the shape of an inverted trapezoid. Figure 1

[0042] The cross section of the first boss 231 and the second boss 251 is in the shape of a trapezoid.

[0043] The end face size of the bottom connecting protrusion 211, the top connecting protrusion 221, the first boss 231 and the second boss 251 inside the lining structure is smaller than the end face size of the lining block.

[0044] In a preferred embodiment, the bottom lining block 21, the top lining block 22, the side lower lining block 23, the connecting lining block 24, the side upper lining block 25, the middle column 26, the diagonal column 27 and the side column 28 are all concrete prefabricated parts, and the concrete prefabricated parts are provided with threaded sleeves at the butt joint faces, and the butt joint connection is realized by bolts threaded on the corresponding threaded sleeves.

[0045] The present application also provides a construction method of the detachable deformed rectangular tunnel lining structure, which will be described below.

[0046] As shown in the drawings, the construction method comprises the following steps: Figure 5

[0047] In step S11, when the cross-over section is constructed, the detachable deformed rectangular tunnel lining structure is provided, and the segments are assembled at the tail of the shield machine to form the pipe segments; then step S12 is performed.

[0048] In step S12, after the installation of the pipe segments is completed, the middle column is removed, and the construction is completed.

[0049] Further, when the diagonal column is assembled, the diagonal column between the top connecting protrusion and the second boss is installed first, and then the diagonal column between the bottom connecting protrusion and the first boss is installed.

[0050] Further, when the diagonal column is assembled, the diagonal columns on both sides of the middle column are simultaneously and symmetrically installed.

[0051] Further, when the side column is assembled, the two side columns are simultaneously and symmetrically installed.

[0052] Preferably, the middle column, the diagonal column and the side column are detachably connected by bolts.​​

[0053] Specifically, threaded sleeves can be preset at the bottom connecting protrusion 211, the top connecting protrusion 221, the first boss 231 and the second boss 251, and corresponding threaded sleeves are arranged at the ends of the center column, the diagonal bracing column and the edge column, after butt joint, the corresponding threaded sleeves are aligned, then the two threaded sleeves are connected by bolts, and the detachable connection of the center column, the diagonal bracing column and the edge column is realized.

[0054] The detachable deformed rectangular tunnel lining structure and the construction method thereof can be directly applied to a project with a cross-over section and a dimensional requirement, the project can be constructed by a shield method, with the shield machine digging forward, the lining structure is assembled at the tail of the shield machine to form a segment, after the assembly is completed, the segment is deformed in a section without a column requirement, two upper diagonal bracing columns are installed first, then two lower diagonal bracing columns are installed, then two edge columns are symmetrically installed, and then the center column is removed, so the deformation of the segment is completed.

[0055] The lining structure and the construction method thereof can solve the problem that the existing rectangular shield cannot be applied to special projects such as cross-over sections, can make the rectangular shield more economical and adaptable, has lower cost and shorter construction period.

[0056] The above embodiments of the present application are described in detail with reference to the drawings, and those skilled in the art can make various changes to the present application according to the above description. Therefore, some details in the embodiments should not constitute a limitation on the present application, and the scope of protection of the present application will be defined by the appended claims.

Claims

1. A detachable deformable rectangular-like tunnel lining structure, characterized by, The tunnel lining structure comprises: a bottom lining block, on which a bottom connecting protrusion is formed and arranged upwardly; a top lining block, which is arranged oppositely to the bottom lining block, on which a top connecting protrusion is formed and arranged downwardly, and the top connecting protrusion is arranged oppositely to the bottom connecting protrusion; a side lower lining block, which is arranged on both sides of the bottom lining block and connected to the bottom lining block through a connecting lining block, and the side lower lining block is provided with a first boss on the side close to the bottom lining block; a side upper lining block, which is arranged on both sides of the top lining block and connected to the top lining block through a connecting lining block, and the side upper lining block is provided with a second boss on the side close to the top lining block, and the side upper lining block is connected to the corresponding side lower lining block; a middle column, which is detachably connected between the bottom connecting protrusion and the top connecting protrusion; an inclined bracing column, which is detachably connected between the bottom connecting protrusion and the first boss and between the top connecting protrusion and the second boss; and a side column, which is detachably connected between the first boss and the second boss.

2. The detachable and transformable quasi-rectangular tunnel lining structure according to claim 1, characterized in that, An enlarged head is formed at the end of the inclined bracing column.

3. The detachable and transformable quasi-rectangular tunnel lining structure according to claim 1, characterized in that, A variable cross-section structure is formed at the end of the side column.

4. The detachable and transformable quasi-rectangular tunnel lining structure according to claim 1, characterized in that, The cross-section of the bottom connecting protrusion is in the shape of a trapezoid, and the cross-section of the top connecting protrusion is in the shape of an inverted trapezoid.

5. The detachable and transformable quasi-rectangular tunnel lining structure according to claim 1, wherein, The cross-section of the first boss and the second boss is in the shape of a trapezoid.

6. A construction method of a detachable deformation rectangular tunnel lining structure, characterized by, The tunnel lining structure comprises the following steps: when a cross-over section of a tunnel is constructed, the detachable and deformable rectangular tunnel lining structure is provided, and the segments are assembled at the tail of a shield machine to form a segment; after the installation of the segments is completed, the middle column is removed, and the construction is completed.

7. The construction method of a detachable and transformable quasi-rectangular tunnel lining structure according to claim 6, characterized in that, When the inclined bracing column is assembled, the inclined bracing column between the top connecting protrusion and the second boss is installed first, and then the inclined bracing column between the bottom connecting protrusion and the first boss is installed.

8. The construction method of a detachable and transformable quasi-rectangular tunnel lining structure according to claim 6, characterized in that, When the inclined bracing column is assembled, the inclined bracing columns on both sides of the middle column are simultaneously and symmetrically installed.

9. The construction method of a detachable and transformable quasi-rectangular tunnel lining structure according to claim 6, characterized in that, When the side column is assembled, the two side columns are simultaneously and symmetrically installed.

10. The construction method of a detachable and transformable quasi-rectangular tunnel lining structure according to claim 6, characterized in that, The middle column, the inclined bracing column, and the side column are detachably connected through bolts.

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