CN109209401A - Shield tunnel inner circular support system and its construction method based on brace pre axial force - Google Patents
Shield tunnel inner circular support system and its construction method based on brace pre axial force Download PDFInfo
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- CN109209401A CN109209401A CN201811137662.8A CN201811137662A CN109209401A CN 109209401 A CN109209401 A CN 109209401A CN 201811137662 A CN201811137662 A CN 201811137662A CN 109209401 A CN109209401 A CN 109209401A
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- steel plate
- fashioned iron
- arc
- support system
- screw jack
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 125
- 239000010959 steel Substances 0.000 claims abstract description 125
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 124
- 229910052742 iron Inorganic materials 0.000 claims abstract description 62
- 238000005304 joining Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 11
- 239000011324 bead Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 230000008014 freezing Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological 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 present invention relates to shield tunnel inner circular support system and its construction method based on brace pre axial force, structure includes the fashioned iron and steel plate group zoarium of shield duct piece annular, fashioned iron and the fit support that shield duct piece is provided perpendicular between shield duct piece of steel plate group；Fashioned iron and steel plate group zoarium circumferential direction are divided into more piece, and every section includes arc-shaped fashioned iron, are connected between each pitch circle arc fashioned iron by junction steel plate, and many places screw jack is arranged in joining place.The present invention applies pressure by screw jack, it is transmitted to support, it is evenly distributed on stress on section of jurisdiction, it forms continuous, rigidity, have prestressed integrated support system, to reach to section of jurisdiction formed it is effective reinforce support purpose, prevent segment deformation cracking failure caused by prestressing force caused by the aperture of section of jurisdiction is concentrated at service channel or even safety accident occur.
Description
Technical field
The invention belongs to Tunnel Engineering technical field of structures, and in particular to a kind of shield tunnel inner circle based on brace pre axial force
Shape support system and its construction method.
Background technique
With the continuous development of urban construction, also increasingly increase severely to urban rail transit construction demand.Since project's earlier stage is controlled
Moved in earth clearance, pipeline change, the factors such as traffic data process influence, often restrict completion time of project in later period, the contact of tunnel accessory structure
The construction of laying a railway track of channel and track is generally existing the case where there are cross-operation.It is needed before Freezing Method for Cross-passage Construction to the place and adjacent of punching
Position section of jurisdiction carries out hole inner support, and to prevent segment deformation, cracking failure or even safety accident occurs.Tunnel inner support generallys use
Conventional " well " font bracing members, slowly, prestress application is difficult to operate, and dimensional footprint is big, installation for this support installation
Personnel are current inconvenient afterwards, and Construction traffic is impassable, and track laying and its construction operation can not be carried out during Freezing Method for Cross-passage Construction,
Seriously affect the duration.Therefore, conventional " well " font bracing members are no longer applicable in, and need to be adjusted correspondingly.To guarantee contact
Channel is constructed while being carried out with laying a railway track, as soon as giving Construction traffic of laying a railway track " construction channel ", round inner support is particularly important.
Summary of the invention
The object of the present invention is to provide a kind of shield tunnel inner circular support system and its construction party based on brace pre axial force
Method, the assembly being welded into using fashioned iron and steel plate by junction steel plate and are bolted, then applying pressure by jack will
It forms continuous, rigidity, has prestressed integrated support system, effectively reinforces support purpose to be formed to section of jurisdiction, prevents
Segment deformation cracking failure or even generation safety accident caused by only prestressing force caused by the aperture of section of jurisdiction is concentrated at service channel.
The technical scheme adopted by the invention is as follows:
Shield tunnel inner circular support system based on brace pre axial force, it is characterised in that:
Fashioned iron and steel plate group including shield duct piece annular are fit, are provided between fashioned iron and steel plate group zoarium and shield duct piece
Perpendicular to the support of shield duct piece；
Fashioned iron and steel plate group zoarium circumferential direction are divided into more piece, and every section includes arc-shaped fashioned iron, pass through between each pitch circle arc fashioned iron
Junction steel plate linking, and many places screw jack is set in joining place.
Arc-shaped fashioned iron in fashioned iron and steel plate group zoarium includes inner arc steel plate and the outer arc inside and outside web and web
Steel plate；
The inner arc steel plate of each pitch circle arc fashioned iron passes through inner arc steel plate junction steel plate and the fixed linking of bolt on the inside of inner arc steel plate；
The outer arc steel plate junction steel plate and bolt that the outer arc steel plate of each pitch circle arc fashioned iron passes through outer arc steel plate inside, web two sides
Fixed linking；
The fixed linking of web junction steel plate and bolt that the web of each pitch circle arc fashioned iron passes through two sides.
At interval of screw jack circumferential at several pitch circle arc fashioned iron setting one, the circular arc adjacent with screw jack
Shape fashioned iron end face is provided with end steel plate, and screw jack both ends are fixed on the steel plate of end.
It is fixed on the inside of arc-shaped fashioned iron inner arc steel plate at screw jack by screw jack junction steel plate and bolt
Linking.
The web two sides of arc-shaped fashioned iron are evenly arranged the radial reinforcement vertical with web in fashioned iron and steel plate group zoarium
Floor.
Support includes the radial support on the inside of bottom plate and bottom plate, and bottom plate abuts shield duct piece inner wall, and is provided with rubber pad
Piece.
Fashioned iron and steel plate group zoarium circumferential direction are divided into ten sections, and each section is connected by junction steel plate to be fixed.
At screw jack circumferentially disposed three.
More Pin are longitudinally arranged in parallel along tunnel for fashioned iron and steel plate group zoarium, are done between each Pin by angle steel longitudinally connected.
The construction method of shield tunnel inner circular support system based on brace pre axial force as mentioned, it is characterised in that:
It is realized by following steps:
Step 1: processing:
Blanking is carried out according to tunnel clearance and actual needs size merogenesis, makes web, the outer arc steel of fashioned iron and steel plate group zoarium
Plate, inner arc steel plate, deep floor, end steel plate and support become ten piecemeals using welding；Each component process after
Ground carries out examination assembling, assembles in tunnel after confirming the errorless number of size；Steel plate, section steel material are Q235B；Welding rod uses
E43xx series welding rod, weld seam are continuous weld, and weld bead height is not less than 8mm；
Step 2: installation:
Wherein a nodal pattern steel and steel plate group zoarium it will be placed on tunnel arch bottom, center is overlapped with tunnel middle line；Rubber is encased inside under support
Glue gasket is put into appropriate gasket according to gap difference between contact point and section of jurisdiction, makes each contact point uniform force；Successively from tunnel
Bottom is symmetrically installed to top, with junction steel plate by the fixation of bolt 10 between each section, segment bolt and injected hole when installation
It is auxiliarily fixed；After support installs, real three screw jack in top are started simultaneously at, prestressing force, each screw jack are applied
Top power is uniformly arranged, the junction steel plate after prestressing force is met the requirements, at fixed screw jack；In circular support anchor ring and tunnel
Axis keeps vertical；
Step 3: construction:
Angle steel is used to do in every tunnel between two Pin pre-loaded support struts longitudinally connected, to ensure the stability of prestress stent；
Section of jurisdiction aperture is carried out after meeting the requirements, performs service channel, and construction of laying a railway track carries out therewith.
The invention has the following advantages that
1, the present invention is acted synergistically by fashioned iron and steel plate welding assembly+high-strength bolt+rubber sheet gasket+jack, is had
Enough intensity, rigidity, globality and good secret patch performance, can sufficiently apply prestressing force, make in support system and section of jurisdiction
Cambered surface is close to, and guarantees aperture section of jurisdiction and adjacent section of jurisdiction without moderate finite deformation.
2, after the installation of this support system, there are enough spaces to meet the current limit requirement of Construction traffic of laying a railway track, can guarantee paving
The normal pass of rail Construction traffic, to the influence very little of lay a railway track construction and other construction operations.
3, the installation of this support system is simple, and it is convenient to remove, reusable, saves the duration, investment reduction, conducive to construction
Smoothly implement.
4, this support system can be applied in the protection of other shield tunnel projects, be with a wide range of applications.
Detailed description of the invention
Fig. 1 is round steelframe support cross-sectional view of the invention；
Fig. 2 is A connecting node detail drawing of the invention；
Fig. 3 is A connecting node detail drawing C-C sectional view of the invention；
Fig. 4 is B connecting node detail drawing of the invention.
In figure, 1- shield duct piece, 2- web, 3- outer arc steel plate, 4- inner arc steel plate, 5- deep floor, the end 6- steel plate, 7-
Outer arc steel plate junction steel plate, 8- web junction steel plate, 9- inner arc steel plate junction steel plate, 10- bolt, 11- support, 12- rubber pad
Piece, 13- screw jack junction steel plate, 14- screw jack.
Specific embodiment
The present invention will be described in detail With reference to embodiment.
The present invention relates to a kind of shield tunnel inner circular support system based on brace pre axial force utilizes fashioned iron and steel plate welding
At assembly, by junction steel plate and being bolted, then by jack is formed continuous, rigidity, have it is prestressed
Integrated support system supports purpose to reach and form effective reinforce to section of jurisdiction.
Structure specifically includes the fashioned iron and steel plate group zoarium of 1 annular of shield duct piece, fashioned iron and steel plate group zoarium and shield
The support 11 of shield duct piece 1 is provided perpendicular between section of jurisdiction 1.Fashioned iron and steel plate group zoarium circumferential direction are divided into more piece, and every section wraps
Arc-shaped fashioned iron is included, is connected between each pitch circle arc fashioned iron by junction steel plate, and many places screw jack is set in joining place
14。
Arc-shaped fashioned iron in fashioned iron and steel plate group zoarium includes inner arc steel plate 4 inside and outside web 2 and web 2 and outer
Arc steel plate 3；The inner arc steel plate junction steel plate 9 and bolt 10 that the inner arc steel plate 4 of each pitch circle arc fashioned iron passes through 4 inside of inner arc steel plate
Fixed linking；The outer arc steel plate 3 of each pitch circle arc fashioned iron connects steel by the outer arc steel plate of 3 inside of outer arc steel plate, 2 two sides of web
Plate 7 and the fixed linking of bolt 10；The web 2 of each pitch circle arc fashioned iron is fixed by the web junction steel plate 8 and bolt 10 of two sides
Linking.
It is adjacent with screw jack 14 at interval of screw jack 14 circumferential at several pitch circle arc fashioned iron setting one
Arc-shaped fashioned iron end face is provided with end steel plate 6, and 14 both ends of screw jack are fixed on end steel plate 6.Screw jack 14
Pass through screw jack junction steel plate 13 and the fixed linking of bolt 10 on the inside of the arc-shaped fashioned iron inner arc steel plate 4 at place.
2 two sides of web of arc-shaped fashioned iron are evenly arranged the radial direction vertical with web 2 in fashioned iron and steel plate group zoarium
Deep floor 5.
Support 11 includes the radial support on the inside of bottom plate and bottom plate, and bottom plate abuts 1 inner wall of shield duct piece, and is provided with rubber
Gasket 12.
Fashioned iron and steel plate group zoarium circumferential direction are divided into ten sections, and each section is connected by junction steel plate to be fixed.14 ring of screw jack
To arranging at three.
More Pin are longitudinally arranged in parallel along tunnel for fashioned iron and steel plate group zoarium, are done between each Pin by angle steel longitudinally connected.
The present invention applies pressure by screw jack 14, is transmitted to support 11, is evenly distributed on stress on section of jurisdiction, rubber
Glue gasket 12 can be concentrated to avoid stress and cause segment damage.
The construction method of the above-mentioned shield tunnel inner circular support system based on brace pre axial force, is realized by following steps:
Step 1: processing:
Blanking is carried out according to tunnel clearance and actual needs size merogenesis, makes web 2, the outer arc steel of fashioned iron and steel plate group zoarium
Plate 3, inner arc steel plate 4, deep floor 5, end steel plate 6 and support 11 become ten piecemeals using welding；Each component processing
Examination assembling is carried out on ground after complete, is assembled in tunnel after confirming the errorless number of size；Steel plate, section steel material are Q235B,
The related standard of country should be met in relation to chemical component and mechanical property；Welding rod uses E43xx series welding rod, and weld seam is sequential welding
Seam, weld bead height are not less than 8mm；
Step 2: installation:
Wherein a nodal pattern steel and steel plate group zoarium it will be placed on tunnel arch bottom, center is overlapped with tunnel middle line；It is encased inside under support 11
Rubber sheet gasket 12 is put into appropriate gasket according to gap difference between contact point and section of jurisdiction, makes each contact point uniform force；Successively from
Tunnel bottom is symmetrically installed to top, with junction steel plate by the fixation of bolt 10 between each section, segment bolt and note when installation
Slurry hole is auxiliarily fixed；After support installs, real three screw jack 14 in top are started simultaneously at, prestressing force, each spiral are applied
Jack 14 pushes up power and is uniformly arranged, the junction steel plate after prestressing force is met the requirements, at fixed screw jack 14；Circular support ring
Face is vertical with the holding of tunnel central axes；
Step 3: construction:
Angle steel is used to do in every tunnel between two Pin pre-loaded support struts longitudinally connected, to ensure the stability of prestress stent；
Section of jurisdiction aperture is carried out after meeting the requirements, performs service channel, and construction of laying a railway track carries out therewith.
This support system of the present invention is both economical applicable in shield tunnel application, and has installation letter
It is single, reusable, highly-safe, save duration, investment reduction the advantages of.Freezing Method for Cross-passage Construction can effectively be solved and intersection of laying a railway track
Space occupation problem when operation, Freezing Method for Cross-passage Construction is not interfere with each other with laying a railway track, to save the whole duration.In addition, this circle
Bracing members system is also applied in the protection of other shield tunnel projects.
The contents of the present invention are not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And to any equivalent transformation that technical solution of the present invention is taken, all are covered by the claims of the invention.
Claims (10)
1. the shield tunnel inner circular support system based on brace pre axial force, it is characterised in that:
Fashioned iron and steel plate group including shield duct piece (1) annular are fit, between fashioned iron and steel plate group zoarium and shield duct piece (1)
It is provided perpendicular to the support (11) of shield duct piece (1)；
Fashioned iron and steel plate group zoarium circumferential direction are divided into more piece, and every section includes arc-shaped fashioned iron, pass through between each pitch circle arc fashioned iron
Junction steel plate linking, and many places screw jack (14) are set in joining place.
2. the shield tunnel inner circular support system according to claim 1 based on brace pre axial force, it is characterised in that:
Arc-shaped fashioned iron in fashioned iron and steel plate group zoarium include inner arc steel plate (4) inside and outside web (2) and web (2) and
Outer arc steel plate (3)；
The inner arc steel plate (4) of each pitch circle arc fashioned iron passes through the inner arc steel plate junction steel plate (9) and bolt on the inside of inner arc steel plate (4)
(10) fixed linking；
The outer arc steel plate connection that the outer arc steel plate (3) of each pitch circle arc fashioned iron passes through outer arc steel plate (3) inside, web (2) two sides
Steel plate (7) and the fixed linking of bolt (10)；
The fixed linking of web junction steel plate (8) and bolt (10) that the web (2) of each pitch circle arc fashioned iron passes through two sides.
3. the shield tunnel inner circular support system according to claim 2 based on brace pre axial force, it is characterised in that:
It is adjacent with screw jack (14) at interval of screw jack (14) circumferential at several pitch circle arc fashioned iron setting one
Arc-shaped fashioned iron end face is provided with end steel plate (6), and screw jack (14) both ends are fixed on end steel plate (6).
4. the shield tunnel inner circular support system according to claim 3 based on brace pre axial force, it is characterised in that:
Pass through screw jack junction steel plate (13) and spiral shell on the inside of arc-shaped fashioned iron inner arc steel plate (4) at screw jack (14)
The fixed linking of bolt (10).
5. the shield tunnel inner circular support system according to claim 1 based on brace pre axial force, it is characterised in that:
Web (2) two sides of arc-shaped fashioned iron are evenly arranged adding for the radial direction vertical with web (2) in fashioned iron and steel plate group zoarium
Strong floor (5).
6. the shield tunnel inner circular support system according to claim 1 based on brace pre axial force, it is characterised in that:
Support (11) includes the radial support on the inside of bottom plate and bottom plate, and bottom plate abuts shield duct piece (1) inner wall, and is provided with rubber
Gasket (12).
7. the shield tunnel inner circular support system according to claim 1 based on brace pre axial force, it is characterised in that:
Fashioned iron and steel plate group zoarium circumferential direction are divided into ten sections, and each section is connected by junction steel plate to be fixed.
8. the shield tunnel inner circular support system according to claim 7 based on brace pre axial force, it is characterised in that:
At screw jack (14) circumferentially disposed three.
9. the shield tunnel inner circular support system according to claim 1 based on brace pre axial force, it is characterised in that:
More Pin are longitudinally arranged in parallel along tunnel for fashioned iron and steel plate group zoarium, are done between each Pin by angle steel longitudinally connected.
10. the construction method of the shield tunnel inner circular support system based on brace pre axial force as described in claim 1, feature
It is:
It is realized by following steps:
Step 1: processing:
Blanking is carried out according to tunnel clearance and actual needs size merogenesis, makes web (2), the outer arc of fashioned iron and steel plate group zoarium
Steel plate (3), inner arc steel plate (4), deep floor (5), end steel plate (6) and support (11), become ten points using welding
Block；Each component on ground carries out examination assembling after processing, and assembles in tunnel after confirming the errorless number of size；Steel plate, structural section
Material is Q235B；Welding rod uses E43xx series welding rod, and weld seam is continuous weld, and weld bead height is not less than 8mm；
Step 2: installation:
Wherein a nodal pattern steel and steel plate group zoarium it will be placed on tunnel arch bottom, center is overlapped with tunnel middle line；Support (11) underlay
Enter rubber sheet gasket (12), appropriate gasket is put into according to gap difference between contact point and section of jurisdiction, makes each contact point uniform force；According to
It is secondary to be symmetrically installed from tunnel bottom to top, with junction steel plate by the fixation of bolt 10 between each section, segment bolt when installation
And injected hole is auxiliarily fixed；After support installs, real three screw jack (14) in top are started simultaneously at, apply prestressing force, often
A screw jack (14) top power is uniformly arranged, the junction steel plate after prestressing force is met the requirements, at fixed screw jack (14)；
Circular support anchor ring is vertical with the holding of tunnel central axes；
Step 3: construction:
Angle steel is used to do in every tunnel between two Pin pre-loaded support struts longitudinally connected, to ensure the stability of prestress stent；
Section of jurisdiction aperture is carried out after meeting the requirements, performs service channel, and construction of laying a railway track carries out therewith.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811137662.8A CN109209401A (en) | 2018-09-28 | 2018-09-28 | Shield tunnel inner circular support system and its construction method based on brace pre axial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811137662.8A CN109209401A (en) | 2018-09-28 | 2018-09-28 | Shield tunnel inner circular support system and its construction method based on brace pre axial force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109209401A true CN109209401A (en) | 2019-01-15 |
Family
ID=64981930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811137662.8A Pending CN109209401A (en) | 2018-09-28 | 2018-09-28 | Shield tunnel inner circular support system and its construction method based on brace pre axial force |
Country Status (1)
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| CN (1) | CN109209401A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030005A (en) * | 2019-03-29 | 2019-07-19 | 中铁第一勘察设计院集团有限公司 | The light-duty guarantor's circle support system of shield tunnel and its construction method |
| CN110159300A (en) * | 2019-04-29 | 2019-08-23 | 同济大学 | A kind of shield tunnel repairing and reinforcement platform and reinforcement means |
| CN110348117A (en) * | 2019-07-10 | 2019-10-18 | 宁波六希格码建筑科技有限公司 | A kind of negative ring structure of steel pipe sheet and its optimization design |
| CN110953000A (en) * | 2019-12-03 | 2020-04-03 | 济南轨道交通集团有限公司 | Temporary prestress supporting mechanism of shield tunnel and construction method |
| CN110952987A (en) * | 2019-12-03 | 2020-04-03 | 济南轨道交通集团有限公司 | Construction method for side-through bridge pile of stacked porous subway tunnel |
| CN112502717A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团第五工程有限公司 | Excavation construction method for contact channel between shield zones of water-rich sand layer |
| CN112502734A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团有限公司 | Construction method of shield interval contact channel of water-rich sand layer |
| CN112502731A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团第五工程有限公司 | Water-rich sand layer shield interval contact channel stratum pre-reinforcing structure and method |
| CN112502733A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团有限公司 | Water-rich sand layer shield interval connection channel hole entering construction method |
| CN112502732A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团有限公司 | Construction method of shield tunnel of water-rich sand layer |
| CN112523783A (en) * | 2019-09-17 | 2021-03-19 | 安徽理工大学 | Quick assembly type support bracket and support method |
| CN113944487A (en) * | 2021-10-27 | 2022-01-18 | 浙江工业大学 | Shield constructs contact passageway section of jurisdiction bearing structure |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030005B (en) * | 2019-03-29 | 2023-09-15 | 中铁第一勘察设计院集团有限公司 | Light circular protection supporting system for shield tunnel and construction method thereof |
| CN110030005A (en) * | 2019-03-29 | 2019-07-19 | 中铁第一勘察设计院集团有限公司 | The light-duty guarantor's circle support system of shield tunnel and its construction method |
| CN110159300A (en) * | 2019-04-29 | 2019-08-23 | 同济大学 | A kind of shield tunnel repairing and reinforcement platform and reinforcement means |
| CN110348117A (en) * | 2019-07-10 | 2019-10-18 | 宁波六希格码建筑科技有限公司 | A kind of negative ring structure of steel pipe sheet and its optimization design |
| CN110348117B (en) * | 2019-07-10 | 2023-10-31 | 宁波六希格码建筑科技有限公司 | Steel pipe sheet negative ring structure and optimal design method thereof |
| CN112523783A (en) * | 2019-09-17 | 2021-03-19 | 安徽理工大学 | Quick assembly type support bracket and support method |
| CN112523783B (en) * | 2019-09-17 | 2023-01-06 | 安徽理工大学 | Rapid assembled support bracket and support method |
| CN110953000A (en) * | 2019-12-03 | 2020-04-03 | 济南轨道交通集团有限公司 | Temporary prestress supporting mechanism of shield tunnel and construction method |
| CN110952987A (en) * | 2019-12-03 | 2020-04-03 | 济南轨道交通集团有限公司 | Construction method for side-through bridge pile of stacked porous subway tunnel |
| CN110953000B (en) * | 2019-12-03 | 2021-05-07 | 济南轨道交通集团有限公司 | Temporary prestress supporting mechanism of shield tunnel and construction method |
| CN112502733A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团有限公司 | Water-rich sand layer shield interval connection channel hole entering construction method |
| CN112502732A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团有限公司 | Construction method of shield tunnel of water-rich sand layer |
| CN112502731A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团第五工程有限公司 | Water-rich sand layer shield interval contact channel stratum pre-reinforcing structure and method |
| CN112502734A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团有限公司 | Construction method of shield interval contact channel of water-rich sand layer |
| CN112502717A (en) * | 2020-11-30 | 2021-03-16 | 中铁二十局集团第五工程有限公司 | Excavation construction method for contact channel between shield zones of water-rich sand layer |
| CN113944487A (en) * | 2021-10-27 | 2022-01-18 | 浙江工业大学 | Shield constructs contact passageway section of jurisdiction bearing structure |
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