CN206816277U - A kind of shield section service channel portal abolishes spiral prestress stent - Google Patents
A kind of shield section service channel portal abolishes spiral prestress stent Download PDFInfo
- Publication number
- CN206816277U CN206816277U CN201720740510.1U CN201720740510U CN206816277U CN 206816277 U CN206816277 U CN 206816277U CN 201720740510 U CN201720740510 U CN 201720740510U CN 206816277 U CN206816277 U CN 206816277U
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- Prior art keywords
- connector
- outer annular
- annular member
- service channel
- spiral
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- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 13
- 238000009434 installation Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000579971 Terebridae Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
It the utility model is related to subway shield tunnel construction field, a kind of specific shield section service channel portal abolishes spiral prestress stent, solve existing rigid support and component heaviness be present, it is complicated, transport inconvenience when installation and dismounting, it is assembled, welding job amount is big, and the problem of stress regulation can not being carried out according to tunnel deformation, including the outer annular member and annular component being arranged concentrically, outer annular member and annular component include the eight identical fanlike die blocks at 45 ° with center of circle angle, the second connector is connected between adjacent fanlike die block, between outer annular member and annular component force transmission element is provided with the middle part of adjacent second connector, between outer annular member and annular component the first connector is provided with the middle part of the second connector and force transmission element, on the outside of outer annular member support member is fixed with along straight line residing for force transmission element.The utility model is simple in construction, assembled convenience, more efficiently improve efficiency of construction, has saved construction cost.
Description
Technical field
Subway shield tunnel construction field is the utility model is related to, it is pre- that a kind of specific shield section service channel portal abolishes spiral
Stress support.
Background technology
Tunnel connection channel, an interface channel being just provided between two tunnels, if a tunnel goes wrong,
Staff in tunnel can be transferred to an other tunnel by service channel, substantially increase the safety coefficient of construction worker,
Therefore there is the title of " passway for escaping ".Developed rapidly recently as urban track traffic, shield machine is with a large amount of popularizations, shield area
Between important component as urban track traffic, the construction of its service channel is emphasis, difficult point and the risk of section construction
Point, and section service channel portal abolishes excessive risk link even more therein.To prevent because service channel portal section of jurisdiction is torn open
Cause the section of jurisdiction near channel position that excessive deformation occurs except rear stress release, generally require abolishing service channel mouth position
Before concrete pipe sheet, interim rigid support is set up in the tunnel at passway.
But the universal component of traditional rigid support is heavy, complicated, transport inconvenience, assembly, is welded when installing and removing
It is big to connect workload, rigid support assembly and disassembly are long in time limit, and its support prestressing force of what is more important can not be adjusted according to tunnel deformation
Section so that support effect is undesirable.
It can be seen that a kind of assembly is convenient and the branch pre-loaded support struts of stress regulation can be carried out with tunnel deformation just seem and very must
Will.
The content of the invention
Component to be present heavy, complicated in order to solve existing rigid support for the utility model, installation and removes luck
Defeated inconvenience, assembly, welding job amount are big, and can not carry out stress regulation according to tunnel deformation so that support effect is undesirable
Problem, there is provided a kind of shield section service channel portal abolishes spiral prestress stent.
The utility model is achieved by the following technical solution：It is pre- that a kind of shield section service channel portal abolishes spiral
Stress support, including the outer annular member and annular component being arranged concentrically, outer annular member and annular component include and circle
Heart angle eight identical fanlike die blocks at 45 °, the second connector are connected between adjacent fanlike die block, the second connector includes
Wing plate connecting plate and web connecting plate, it is provided between outer annular member and annular component in the middle part of adjacent second connector
Force transmission element, integral first will be connected by being provided between the second connector and force transmission element between outer annular member and annular component connects
Fitting, outer annular member outside are fixed with support member along straight line residing for force transmission element, and support member includes screw jack or supporting leg, branch
Leg quantity is two and is disposed adjacent.
The H-shaped structure that outer annular member and annular component are welded into bending by steel plate group is realized.H profile steel structure
Stress performance is good, but its bending resistance is strong, directly causes its internal stress to fail by bending progress handling ease, utilizes steel plate
It is relatively low to carry out bending group weldering cost of implementation.The end of outer annular member residing for fanlike die block and annular component is provided with second
Connector, the second connector can be combined by the wing plate connecting plate and web connecting plate for being welded on annular construction member end；
Can be in the end being directly welded to connect plate of outer annular member residing for fanlike die block and annular component as the second connector.It is adjacent
Fanlike die block can be fixedly connected by two identical bands with the second connector of auger shell keyhole by bolt.
It is attached between adjacent fanlike die block by the second connector and high-strength bolt, wing plate connecting plate and web connecting plate
On be provided with some bolts hole.To ensure installation and removing conveniently, the connection of fanlike die block is connected by screw bolts, and avoids welding
The prestress stent that process bands are come recycles the defects of difficult, while high-strength in view of the stability under loading of service channel, use
Bolt is attached.
Backing plate is provided between screw jack or supporting leg and service channel section of jurisdiction contact position.To ensure that contact surface is uniform
Stress, is provided with backing plate between supporting leg and screw jack and service channel section of jurisdiction contact position, and backing plate can use modified poly-
Urethane backing plate or foam aluminium alloy backing plate, two kinds of backing plates all have light high-strength characteristic, can be used as and preferably use.
When prestress stent is installed, supporting leg should be arranged on bottom position, and two supporting legs are relative to passage midline vertical line pair
Claim arrangement.Ensure that two supporting legs are symmetricly set on the bottom of passage, be easy to the installation of whole prestress stent, pacify in prestress stent
Fill and played a supportive role before being adjusted in place.
The utility model is relative to advantage possessed by prior art：
By optimizing prestress stent structure, traditional support main bearing member is changed to ring cloth by being vertically arranged
Put, the moment of flexure on support and shearing force are converted into by pressure by twice ring component, structure is more stable, stress more adduction
Reason；Modularization assemble, each module structure is similar and size is smaller, and peace is torn open and convenient transport, rapid；Prestressing force can be according to tunnel
Deformation is adjusted；The utility model is not only simple in structure, assembly facilitates, cheap, meanwhile, more efficiently improve is applied
Work efficiency rate, construction cost is saved.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is partial enlarged drawing of the present utility model.
In figure：1- outer annular members, 2- annular components, the connectors of 3- first, 4- force transmission elements, 5- screw jack, 6-
Supporting leg, 7- backing plates, 8a- wing plate connecting plates, 8b- web connecting plates.
Embodiment
The utility model is described further with reference to Fig. 1 and Fig. 2, a kind of shield section service channel portal abolishes spiral
Prestress stent, including the outer annular member 1 and annular component 2 being arranged concentrically, outer annular member 1 and annular component 2 wrap
The eight identical fanlike die blocks at 45 ° with center of circle angle are included, the second connector, the second connection are connected between adjacent fanlike die block
Part includes wing plate connecting plate 8a and web connecting plate 8b, and adjacent second connector is located between outer annular member 1 and annular component 2
Middle part be provided with force transmission element 4, being provided between the second connector and force transmission element 4 will connect between outer annular member 1 and annular component 2
The first overall connector 3 is connected into, the outside of outer annular member 1 is fixed with support member along straight line residing for force transmission element 4, and support member includes
Screw jack 5 or supporting leg 6, the quantity of supporting leg 6 are two and are disposed adjacent.
The H-shaped structure that outer annular member 1 and annular component 2 are welded into bending by steel plate group is realized.Adjacent fan
Shape intermodule is attached by the second connector and high-strength bolt, if being provided with wing plate connecting plate 8a and web connecting plate 8b
Bolt stem hole.Backing plate 7 is provided between screw jack 5 or supporting leg 6 and service channel section of jurisdiction contact position.Prestress stent is pacified
During dress, supporting leg 6 should be arranged on bottom position, and two supporting legs 6 are arranged symmetrically relative to passage midline vertical line.
In use, first assembly carries two fast fanlike die blocks of supporting leg 6, erect in service channel and keep firm, enter one
Remaining assembled fanlike die block of step, assembly order are carried out according to the principle symmetrically assembled, equal per one step fanlike die block of assembled completion
It need to test, ensure to be connected firmly, until prestress stent is spliced into cyclization；Further, by adjusting outer annular member 1
The stroke of perficial helical jack 5, the screw jack 5 of all positions is held out against with passage section of jurisdiction, finally to prestressing force frame
Carry out force analysis, it is ensured that it is equally loaded.
Embodiment：In the shield section Freezing Method for Cross-passage Construction of certain metro project, supporting, bag are carried out using the utility model
Include outer annular member 1, annular component 2, the first connector 3, force transmission element 4, screw jack 5, supporting leg 6, backing plate 7.Pass through the wing
The second connector that plate connecting plate 8a, web connecting plate 8b are formed, two circles are connected as by outer annular member 1, annular component 2
Ring, form the main member of stress；Two annulus are connected as by an entirety by the first connector 3, by force transmission element 4 by spiral shell
The pressure conduction that is subject to of rotation jack 5 makes the common stress of inside-and-outside ring component on annular component 2；On outer annular member 1
Screw jack 5 is connected, for the prestressing force between adjusting bracket and section of jurisdiction；Backing plate 7 is placed between screw jack 5 and section of jurisdiction, is increased
Big lifting surface area；Screw jack 5 is replaced using supporting leg 6 in two fanlike die blocks of bottom.
Annular component 2, outer annular member 1 are welded into H-shaped by steel plate group, as preferred H-shaped section is high, wide size is 200
Mm × 200 mm, steel plate thickness 12mm, inner ring center radius 1750mm, outer shroud center radius 2250mm；First connector 3 is adopted
With [20 channel-section steels are made, and each fanlike die block is symmetrically distributed in annular construction member both ends using two the first connectors 3 are provided with,
Screw jack 5 uses model QDL50 screw jack, and wherein screw jack 5 designs maximum top power 500KN, passes through weldering
Connect and be connected with outer annular member 1；Force transmission element 4 is welded into H-shaped by steel plate group, and its section is high, wide size is the mm of 200 mm × 200, thick
Spend for 12mm, it is solderable or be fixed on using high-strength bolt between annular component 2 and outer annular member 1, in fanlike die block
Annular construction member 2, the end of outer annular member 1 are welded with the second connector, wherein the second connector includes wing plate connecting plate
8a and web connecting plate 8b, wing plate connecting plate 8a and web connecting plate 8b are from both direction by annular component 2 and outer ring structure
Part 1 connects respectively, weld bead height 6mm；8 bolts hole, phase are respectively arranged with wing plate connecting plate 8a and web connecting plate 8b
Second connector 8 of adjacent fanlike die block uses 16 10.9 grades of M20 high-strength friction bolt connections, and fanlike die block is entered successively
OK, directly closing is cyclic.
Further, the elongation of each screw jack 5 is adjusted, it is held out against with passage section of jurisdiction, it is effective so as to reach
Support.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than it is carried out
Limitation, although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art is to foregoing reality
Apply the technical scheme described in example to modify, including partly or entirely technical characteristic of the present utility model is equally replaced
Change, the essence of its appropriate technical solution is without departing from the scope of protection of the utility model.
Claims (5)
1. a kind of shield section service channel portal abolishes spiral prestress stent, including the outer annular member being arranged concentrically（1）
With annular component（2）, it is characterised in that：Outer annular member（1）With annular component（2）Including at 45 ° with center of circle angle
Eight identical fanlike die blocks, the second connector are connected between adjacent fanlike die block, the second connector includes wing plate connecting plate
（8a）With web connecting plate（8b）, outer annular member（1）With annular component（2）Between set in the middle part of adjacent second connector
It is equipped with force transmission element（4）, the second connector and force transmission element（4）Between be provided with outer annular member（1）With annular component（2）Between connect
It is connected into the first overall connector（3）, outer annular member（1）Outside is along force transmission element（4）Residing straight line is fixed with support member, support
Part includes screw jack（5）Or supporting leg（6）, supporting leg（6）Quantity is two and is disposed adjacent.
2. a kind of shield section service channel portal according to claim 1 abolishes spiral prestress stent, its feature exists
In：Outer annular member（1）With annular component（2）The H-shaped structure that bending is welded into by steel plate group is realized.
3. a kind of shield section service channel portal according to claim 1 abolishes spiral prestress stent, its feature exists
In：It is attached between adjacent fanlike die block by the second connector and high-strength bolt, wing plate connecting plate（8a）With web connecting plate
（8b）On be provided with some bolts hole.
4. a kind of shield section service channel portal according to claim 1 abolishes spiral prestress stent, its feature exists
In：Screw jack（5）Or supporting leg（6）Backing plate is provided between the contact position of service channel section of jurisdiction（7）.
5. a kind of shield section service channel portal according to any one in claim 1-4 abolishes spiral prestressing force
Support, it is characterised in that：When prestress stent is installed, supporting leg（6）Bottom position, and two supporting legs should be arranged on（6）Relative to logical
Road center line vertical line position is arranged symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740510.1U CN206816277U (en) | 2017-06-23 | 2017-06-23 | A kind of shield section service channel portal abolishes spiral prestress stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740510.1U CN206816277U (en) | 2017-06-23 | 2017-06-23 | A kind of shield section service channel portal abolishes spiral prestress stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206816277U true CN206816277U (en) | 2017-12-29 |
Family
ID=60761686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720740510.1U Expired - Fee Related CN206816277U (en) | 2017-06-23 | 2017-06-23 | A kind of shield section service channel portal abolishes spiral prestress stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206816277U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222978A (en) * | 2018-03-08 | 2018-06-29 | 中铁建大桥工程局集团第四工程有限公司 | A kind of metro shield driving freezes synchronization job belt stress stent system and installation method with service channel |
| CN112922641A (en) * | 2021-02-20 | 2021-06-08 | 山东交通学院 | Circular prestress support system for subway communication channel construction and assembling method |
| CN113944487A (en) * | 2021-10-27 | 2022-01-18 | 浙江工业大学 | Shield constructs contact passageway section of jurisdiction bearing structure |
-
2017
- 2017-06-23 CN CN201720740510.1U patent/CN206816277U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222978A (en) * | 2018-03-08 | 2018-06-29 | 中铁建大桥工程局集团第四工程有限公司 | A kind of metro shield driving freezes synchronization job belt stress stent system and installation method with service channel |
| CN112922641A (en) * | 2021-02-20 | 2021-06-08 | 山东交通学院 | Circular prestress support system for subway communication channel construction and assembling 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 |