CN109139042B - Pre-buried sleeve mounting method and system based on tunnel segment modulus arrangement - Google Patents
Pre-buried sleeve mounting method and system based on tunnel segment modulus arrangement Download PDFInfo
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- CN109139042B CN109139042B CN201811052016.1A CN201811052016A CN109139042B CN 109139042 B CN109139042 B CN 109139042B CN 201811052016 A CN201811052016 A CN 201811052016A CN 109139042 B CN109139042 B CN 109139042B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000009434 installation Methods 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a method for installing a pre-buried sleeve based on the modular arrangement of tunnel duct pieces, which comprises standard blocks, adjacent blocks and top sealing blocks which can be spliced into a duct ring, and comprises the following steps: s1, calculating an angle modulus alpha according to a staggered joint assembly angle theta of adjacent pipe rings of the shield tunnel, wherein: N is more than or equal to 2 and less than or equal to 7; s2, calculating the number N of the installation base points, wherein: Equally-spaced N mounting base points are distributed on the inner periphery of the pipe ring; s3, burying a plurality of embedded sleeves on the inner wall of the pipe ring corresponding to the installation base point. The invention realizes that the position and elevation of the embedded sleeve are fixed after the tunnel duct piece is assembled, so that most equipment brackets can be directly installed on the embedded sleeve, and the installation of the external hanging channel is more standard and unified. The invention also provides a system corresponding to the installation method of the embedded sleeve.
Description
Technical Field
The invention relates to a tunnel building construction method and a system thereof, in particular to a method and a system for installing an embedded sleeve based on tunnel segment modulus arrangement.
Background
In the prior art, the following two novel modes are mainly adopted when equipment in a tunnel is installed:
(1) And fully embedding a channel in the shield concrete segment and then installing a bracket hanging piece through the channel. The technical limitation of the method is that the full embedded channel adopts the technology of adding the external sealing antirust coating to the ordinary carbon steel, so that the rusting and corrosion of the embedded channel in the tunnel environment are difficult to avoid, and the channel is difficult to replace after rusting due to the integral embedded channel entering the inside of the concrete, and the service life of the channel is not longer than 30 years; in addition, the full embedded channel has complex process, high overall implementation and installation and maintenance cost and high overall embedded implementation risk.
(2) And embedding a sleeve in the shield concrete segment, and then adding an externally hung channel in the area where equipment needs to be hung to mount the bracket. The technical limitation of the mode is that only the embedded sleeve is designed to be embedded into the concrete, and the bracket equipment is installed outside by adopting the mode of externally hanging a channel. The arrangement of the embedded sleeve is not designed according to the characteristics of the shield tunnel segment, so that the effect after the embedded sleeve is embedded is poor. Because the concrete pipe sheets are assembled in a staggered joint assembly mode, sleeve points are distributed irregularly, so that the positions of the sleeves cannot be fixed, and the problem of mounting bracket equipment can be solved only by completely depending on the external hanging channels in the later period. In addition, because the error when the section of jurisdiction is assembled makes pre-buried sleeve position comparatively random to make the length of external channel, installation hole site etc. all be difficult to realize standardized unification, bring the installation inconvenient during the in-service use, need interim trompil or decide scheduling problem, influenced the reliability and the anticorrosive of channel. Meanwhile, the on-site installation has high labor cost and high overall material cost, the problem in actual engineering cannot be solved by a simple combination mode of embedding the sleeve and externally hanging the channel, the practicality and the operability are not realized, and the large-scale production and popularization and promotion are difficult.
Disclosure of Invention
In order to make up for the defects existing in the prior art, the invention provides a method and a system for installing the embedded sleeve based on the modular arrangement of the tunnel segment, which realize that the position and the elevation of the embedded sleeve are fixed after the tunnel segment is assembled, so that most equipment brackets can be directly installed on the embedded sleeve, and meanwhile, the installation of the external hanging channel is more standard and unified.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the method for installing the embedded sleeve based on the modular arrangement of the tunnel duct piece comprises the duct piece capable of being spliced into a duct ring, wherein a track area is arranged at the bottom of the inner periphery of the duct ring, and a contact net area is arranged at the top of the duct ring, and the method comprises the following steps:
s1, calculating an angle modulus alpha according to a staggered joint assembly angle theta of adjacent pipe rings of the shield tunnel, wherein: 2≤n≤7；
S2, calculating the number N of the installation base points, wherein: equally-spaced N mounting base points are distributed on the inner periphery of the pipe ring;
S3, burying a plurality of embedded sleeves on the inner wall of the pipe ring corresponding to the installation base point.
Further, in step S2, the distances from the installation base point to the edge of the segment are all greater than the diameter width of the embedded sleeve.
Further, in step S3, the number of the pre-buried sleeves is smaller than or equal to the number of the installation base points, the pre-buried sleeves are perpendicular to the tangent line of the pipe ring, and the pre-buried sleeves are exposed on the inner wall surface of the pipe piece.
In step S3, the pre-buried sleeves and the mounting base points are arranged on the inner wall surface of the pipe ring outside the track area in a one-to-one correspondence manner.
As another embodiment, in step S3, the pre-buried sleeves and the installation base points are disposed on the inner wall surface of the pipe ring between the track area and the contact net area in a one-to-one correspondence manner.
The invention also provides a pre-buried sleeve mounting system based on the modular arrangement of the tunnel duct pieces, which comprises a plurality of duct pieces capable of being spliced into a duct ring:
And a plurality of mounting base points are arranged on the circumferential surface of the inner side of the pipe ring at equal intervals, the included angle between every two adjacent mounting base points and the joint assembly angle between every two adjacent pipe rings are in an integer multiple relation, and part or all of the mounting base points are provided with embedded sleeves.
Further, the distance from the installation base point to the edge of the duct piece is larger than the diameter width of the embedded sleeve.
Further, the number of the embedded sleeves is smaller than or equal to the number of the installation base points, the embedded sleeves are perpendicular to the tangent line of the pipe ring, and the embedded sleeves are exposed out of the inner wall surface of the pipe piece.
Further, the embedded sleeve comprises a connecting rod and a limiting piece, wherein the lower end of the connecting rod is provided with a threaded hole and is exposed out of the inner wall surface of the duct piece, the limiting piece is arranged at the top of the connecting rod, and the outer diameter of the limiting piece is larger than that of the connecting rod; and a raised line is arranged between the connecting rod and the limiting piece, and the raised lines are symmetrically arranged on two sides of the connecting rod.
Furthermore, the inner wall of the pipe ring is also provided with an external slot, the external slot is in threaded connection with the embedded sleeve, the radian of the external slot is equal to that of the pipe piece, the external slot is provided with a threaded via hole corresponding to the threaded hole, and the threaded via hole is arranged along the circumferential direction of the external slot.
Compared with the prior art, the invention has the following beneficial technical effects:
According to the method and the system for installing the embedded sleeve based on the tunnel segment modulus arrangement, disclosed by the invention, the staggered joint assembly angle is equal to the multiple of the included angle between the adjacent embedded sleeves, so that the embedded sleeves can be connected into a straight line on the axis after the pipe rings are assembled, and the fixation of the position and the elevation is realized. On the basis, the electromechanical equipment installation engineering can adopt a large part of equipment brackets to be directly installed on the embedded sleeve as hanging points according to the fixed position of the embedded sleeve, and a small part of equipment brackets adopt an externally hung channel or bracket adapter plate as the installation hanging points. Even the externally hung channel can be completely omitted as a hanging point, so that the material cost is greatly saved, the utilization rate of the embedded sleeve is increased, and the workload, the transportation amount and the manual amount of the post-electromechanical installation are reduced. In addition, because the positions, the intervals and the elevations of all the sleeves are fixed, the product standardization of the external hanging channel or the bracket adapter plate can be realized, and later temporary perforating or cutting is not needed.
Drawings
FIG. 1 is a flow chart of a method for installing an embedded sleeve based on the modular arrangement of tunnel segments;
FIG. 2 is a layout of the pre-buried sleeve after the ring A of embodiment 1 of the present invention is unfolded;
FIG. 3 is a layout of the pre-buried sleeve assembled by the ring A in embodiment 1 of the present invention;
FIG. 4 is a layout of the assembled pre-buried sleeve of the B ring in embodiment 1 of the present invention;
FIG. 5 is a layout of the pre-buried sleeve after the ring A of embodiment 2 of the present invention is unfolded;
FIG. 6 is a layout of the pre-buried sleeve assembled by the ring A in embodiment 2 of the present invention;
FIG. 7 is a layout of the assembled pre-buried sleeve of the B ring in embodiment 2 of the present invention;
FIG. 8 is a schematic bottom view of the embedment sleeve of the present invention;
FIG. 9 is a schematic view of the A-direction structure of the embedded sleeve of the present invention;
FIG. 10 is a schematic view of the B-direction structure of the embedded sleeve of the present invention;
FIG. 11 is a schematic illustration of an externally hung channel structure of the present invention;
FIG. 12 is a schematic cross-sectional view of an external hanging channel of the present invention.
Wherein: 1-segment; 2-track area; 3-contact net area; 4-mounting base points; 5-embedding a sleeve; 51-connecting rods; 52-limiting parts; 53-convex strips; 54-threaded holes; 6-externally hung channels; 61-threaded vias.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly practiced by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
In order to facilitate understanding of the invention, the following description is made on the assembly of the shield tunnel pipe ring:
The tunnel segment comprises a standard block A, an adjacent block B, an adjacent block C and a capping block K which can be assembled into a tube ring, a track area for laying a track surface is arranged at the bottom of the inner periphery of the tube ring, and a contact net area for installing a contact net is arranged at the top of the tube ring. The assembly mode of the shield tunnel pipe ring generally adopts an A-B-A ring mode to push staggered joint assembly in the axial direction of the tunnel, specifically, the pipe ring uses the central line of the sealing block as ase:Sub>A reference, the A ring rotates leftwards relative to the longitudinal central line of the tunnel by an angle, the B ring rotates rightwards relative to the longitudinal central line of the tunnel by an angle, and the two angles are added to form the staggered joint assembly angle thetase:Sub>A.
Example 1
Referring to fig. 1-4 and fig. 8-12, the present embodiment provides a method for installing a pre-buried sleeve based on a tunnel segment modulus arrangement, which is suitable for a shield tunnel with a contact net ring. In the embodiment, the pipe ring is formed by splicing 6 pipe sheets, the inner diameter of the pipe ring is 5.4m, the ring A rotates 18 degrees leftwards relative to the longitudinal central line of the tunnel, the ring B rotates 18 degrees rightwards relative to the longitudinal central line of the tunnel, and the staggered joint splicing angle theta=36 degrees. The specific installation method comprises the following steps:
S1, calculating an angle modulus alpha according to a staggered joint assembly angle theta, wherein: n is more than or equal to 2 and less than or equal to 7. In this embodiment, the value of n is set to 4, and the value of n may be an integer between 2 and 7 according to the specific tunnel inner diameter and the joint assembly angle. The angle modulus α=9° is calculated by substituting θ=36° into the formula.
S2, calculating the number N of the installation base points 4, wherein: Substituting α=9° into the formula, calculating to obtain n=40, and equally distributing 40 mounting base points 4 on the inner circumference of the pipe ring. At this time, the included angles between the adjacent mounting base points 4 on the pipe ring are equal to the angle modulus α, that is, 9 °, and the spacing between the mounting base points 4 is 0.424m. The installation base points 4 take the central line of the capping block K as a reference, two adjacent installation base points 4 are symmetrically arranged on two sides of the central line of the capping block K, and the distance from each installation base point 4 to the edge of the duct piece 1 is larger than 4cm.
S3, arranging the 37 embedded sleeves 5 and the installation base points 4 in one-to-one correspondence on the installation base points 4 outside the track area 2, namely reserving the 3 installation base points 4 in the track area 2, wherein the included angle between the two adjacent embedded sleeves 5 at the edge of the reserved position is equal to 36 degrees, and the interval is 0.424 multiplied by 4m. The embedded sleeve 5 is perpendicular to the tangent line of the pipe ring, and the embedded sleeve 5 is exposed on the inner wall surface of the pipe piece 1 so as to be convenient for installing the externally hung channel 6 or the bracket adapter plate. The two sides of the track area 2 and the contact net area 3 are provided with external hanging channels, wherein the external hanging channels 6 on the left side of the track area 2 are used for installing evacuation platforms, the external hanging channels 6 on the right side of the track area are used for installing fire-fighting pipelines, and the external hanging channels 6 of the contact net area 3 are used for installing contact nets. The radian of the external hanging channels 6 is equal to that of the duct piece 1, the external hanging channels 6 are connected to the inner wall of the duct piece 1 through the embedded sleeve 5, the external hanging channels 6 are arranged at equal intervals, and the length of each external hanging channel 6 is 1.672m.
The embodiment also provides a pre-buried sleeve installing the system based on tunnel segment modulus is arranged, including a plurality of segments that can splice into the pipe ring:
The inner circumferential surface of the pipe ring is provided with 40 mounting base points 4 at equal intervals, the included angle between every two adjacent mounting base points 4 is 9 degrees, the angle of staggered joint assembly between every two adjacent pipe rings is a multiple of 4 times, and the interval between the mounting base points 4 is 0.424m. The installation base points 4 are symmetrically arranged on two sides of the central line of the capping block K by taking the central line of the capping block K as a reference. The distance from each installation base point 4 to the edge of the duct piece 1 is larger than the diameter width of the embedded sleeve 5, specifically, the distance value is larger than 4cm in the embodiment.
The 37 mounting base points 4 outside the track area 2 are provided with embedded sleeves 5. The embedded sleeves 5 are omitted from 3 continuous mounting base points 4 in the track area 2, the included angle between two adjacent embedded sleeves 5 at the edge of the track area 2 is equal to 36 degrees, and the interval is 0.424 multiplied by 4m. The embedded sleeve 5 is perpendicular to the tangent line of the pipe ring, and the embedded sleeve 5 is exposed on the inner wall surface of the pipe piece 1 so as to be convenient for installing the externally hung channel 6 or the bracket adapter plate. The pre-buried sleeve 5 is made of metal or composite materials including 316L stainless steel, 304 stainless steel, nylon, plastic, etc., but is not limited to these materials. The embedded sleeve 5 comprises a connecting rod 51 and a limiting piece 52, a threaded hole 54 is formed in the bottom of the connecting rod 51 and exposed out of the inner wall surface of the duct piece 1, and anti-skid patterns are formed on the surface of the connecting rod 51. The stopper 52 is coupled to the top of the connection rod 51 and has an outer diameter larger than that of the connection rod 51. And a raised strip 53 is further arranged between the limiting piece 52 and the connecting rod 51 to enhance the bonding strength between the limiting piece and the connecting rod, and the raised strips 53 are symmetrically arranged on two sides of the connecting rod 51. It should be noted that the shape of the embedded sleeve 5 may be changed appropriately according to practical situations, and the shape of the embedded sleeve includes changes of size, shape, and the like, which are all within the scope of the present invention.
The two sides of the track area 2 and the contact network area 3 are provided with external hanging channels, wherein the external hanging channel 6 on the left side of the track area 2 is used for installing an evacuation platform, the external hanging channel 6 on the right side of the track area 2 is used for installing a fire-fighting pipeline, and the external hanging channel 6 of the contact network area is used for installing a contact network. The radian of the external hanging channel 6 is equal to that of the duct piece 1, and the external hanging channel 6 is provided with a kidney-shaped threaded through hole 61 arranged along the circumferential direction of the external hanging channel 6 and in threaded connection with the embedded sleeve 5. The external hanging channels 6 are arranged at equal intervals, and the length of each external hanging channel is 1.672m.
Example 2
Referring to fig. 5-7, the present embodiment provides another installation method of embedded sleeves based on modular arrangement of tunnel segment, which is applicable to shield tunnels without contact net, and is different from embodiment 1 in that:
S3, arranging 33 embedded sleeves 5 and installation base points 4 in one-to-one correspondence on the installation base points 4 between the track area 2 and the contact net area 3, wherein the 3 installation base points 4 in the track area 2 are left blank, the included angle between two adjacent embedded sleeves 5 at the edge of the blank is equal to 36 degrees, and the interval is 0.424 multiplied by 4m; the 4 installation base points 4 in the contact net area 3 are left blank, the included angle between two adjacent embedded sleeves 5 at the edge of the blank is equal to 45 degrees, and the interval is 0.424 multiplied by 5m.
The method provided in this embodiment does not provide an external hanging channel 6 in the contact network area 3, and other methods are the same as those in embodiment 1, and will not be described here again.
The present embodiment also provides another pre-buried sleeve installation system based on the modular arrangement of tunnel segment, which is different from embodiment 1 in that:
the 33 embedded sleeves 5 are arranged on the pipe annular wall surface between the track area 2 and the contact net area 3 in a one-to-one correspondence manner with the mounting base points 4, wherein the 3 mounting base points 4 in the track area 2 are left, the included angle between the two adjacent embedded sleeves 5 at the edge of the left part is equal to 36 degrees, and the interval is 0.424 multiplied by 4m; the 4 installation base points 4 in the contact net area 3 are left blank, the included angle between two adjacent embedded sleeves 5 at the edge of the blank is equal to 45 degrees, and the interval is 0.424 multiplied by 5m.
The installation system provided in this embodiment does not provide an external hanging channel 6 in the contact network area 3, and other structures are the same as those in embodiment 1, and will not be described here again.
Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it should be understood that the invention is not limited to the preferred embodiments, but is capable of modification and equivalents to some of the features described in the foregoing embodiments, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The method for installing the embedded sleeve based on the modular arrangement of the tunnel duct pieces comprises a plurality of duct pieces capable of being spliced into a duct ring, wherein a track area is arranged at the bottom of the inner periphery of the duct ring, and a contact net area is arranged at the top of the duct ring, and the method is characterized by comprising the following steps:
S1, calculating an angle modulus alpha according to a staggered joint assembly angle theta of adjacent pipe rings of the shield tunnel, wherein: alpha = N is more than or equal to 2 and less than or equal to 7, wherein the duct piece comprises ase:Sub>A standard block A, an adjacent block B, an adjacent block C and ase:Sub>A capping block K which can be assembled into ase:Sub>A duct ring, the track arease:Sub>A is used for laying ase:Sub>A track surface, the contact arease:Sub>A is used for installing ase:Sub>A contact net, the duct ring of the shield tunnel is assembled by pushing ase:Sub>A staggered joint in the axial direction of the tunnel in an assembling mode of an A-B-A ring, the duct ring takes the central line of the capping block as ase:Sub>A reference, the A ring rotates leftwards relative to the longitudinal central line of the tunnel by an angle, the B ring rotates rightwards relative to the longitudinal central line of the tunnel by an angle, and the two angles are added to form ase:Sub>A staggered joint assembling angle thetase:Sub>A; the value of n is an integer between 2 and 7 according to the specific tunnel inner diameter and the staggered joint assembly angle;
s2, calculating the number N of the installation base points, wherein: n= ; Equally-spaced N mounting base points are distributed on the inner periphery of the pipe ring;
S3, burying a plurality of embedded sleeves on the inner wall of the pipe ring corresponding to the installation base point.
2. The method for installing the embedded sleeve based on the tunnel segment modulus arrangement according to claim 1, wherein the method comprises the following steps: in step S2, the distances from the installation base point to the edge of the segment are all greater than the diameter width of the embedded sleeve.
3. The method for installing the embedded sleeve based on the tunnel segment modulus arrangement according to claim 1 or 2, wherein the method comprises the following steps: in step S3, the number of the pre-buried sleeves is smaller than or equal to the number of the installation base points, the pre-buried sleeves are perpendicular to the tangent line of the pipe ring, and the pre-buried sleeves are exposed on the inner wall surface of the pipe piece.
4. The method for installing the embedded sleeve based on the tunnel segment modulus arrangement according to claim 1, wherein the method comprises the following steps: in step S3, the pre-buried sleeves and the installation base points are arranged on the inner wall surface of the pipe ring outside the track area in a one-to-one correspondence manner.
5. The method for installing the embedded sleeve based on the tunnel segment modulus arrangement according to claim 1, wherein the method comprises the following steps: in step S3, the pre-buried sleeves and the installation base points are arranged on the inner wall surface of the pipe ring between the track area and the contact net area in a one-to-one correspondence manner.
6. Pre-buried sleeve installing the system based on tunnel segment modulus arranges, its characterized in that: a pre-buried sleeve installation method based on the tunnel segment modulus arrangement is adopted according to claim 1;
And a plurality of mounting base points are arranged on the circumferential surface of the inner side of the pipe ring at equal intervals, the included angle between every two adjacent mounting base points and the joint assembly angle between every two adjacent pipe rings are in an integer multiple relation, and part or all of the mounting base points are provided with embedded sleeves.
7. The pre-buried sleeve mounting system based on tunnel segment modulus arrangement of claim 6, wherein: the distance from the installation base point to the edge of the duct piece is larger than the diameter width of the embedded sleeve.
8. The pre-buried sleeve mounting system based on a tunnel segment modulus arrangement according to claim 6 or 7, characterized in that: the number of the embedded sleeves is smaller than or equal to the number of the installation base points, the embedded sleeves are perpendicular to the tangent line of the pipe ring, and the embedded sleeves are exposed out of the inner wall surface of the pipe piece.
9. The pre-buried sleeve mounting system based on tunnel segment modulus arrangement of claim 8, wherein: the embedded sleeve comprises a connecting rod and a limiting piece, wherein the lower end of the connecting rod is provided with a threaded hole and is exposed out of the inner wall surface of the duct piece, the limiting piece is arranged at the top of the connecting rod, and the outer diameter of the limiting piece is larger than that of the connecting rod; and a raised line is arranged between the connecting rod and the limiting piece, and the raised lines are symmetrically arranged on two sides of the connecting rod.
10. The pre-buried sleeve mounting system based on tunnel segment modulus arrangement of claim 9, wherein: the inner wall of the pipe ring is also provided with an external slot, the external slot is in threaded connection with the embedded sleeve, the radian of the external slot is equal to that of the pipe piece, the external slot is provided with a threaded via hole corresponding to the threaded hole, and the threaded via hole is arranged along the circumferential direction of the external slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052016.1A CN109139042B (en) | 2018-09-10 | 2018-09-10 | Pre-buried sleeve mounting method and system based on tunnel segment modulus arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052016.1A CN109139042B (en) | 2018-09-10 | 2018-09-10 | Pre-buried sleeve mounting method and system based on tunnel segment modulus arrangement |
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| CN109139042A CN109139042A (en) | 2019-01-04 |
| CN109139042B true CN109139042B (en) | 2024-04-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113153425B (en) * | 2021-05-14 | 2023-02-28 | 中国铁路设计集团有限公司 | Design method for local embedded channel of high-speed railway shield tunnel contact net foundation |
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