CN110439578A - A kind of base construction and its design method of shield machine - Google Patents
A kind of base construction and its design method of shield machine Download PDFInfo
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- CN110439578A CN110439578A CN201910870973.3A CN201910870973A CN110439578A CN 110439578 A CN110439578 A CN 110439578A CN 201910870973 A CN201910870973 A CN 201910870973A CN 110439578 A CN110439578 A CN 110439578A
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- web
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- 238000009411 base construction Methods 0.000 title claims abstract description 41
- 238000013461 design Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000010276 construction Methods 0.000 claims abstract description 8
- 239000003351 stiffener Substances 0.000 claims description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000003137 locomotive effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
A kind of base construction and its design method of shield machine, including base construction unit；Base construction unit includes collet, pedestal, track support and track；It is fixedly connected between collet and tunnel floor；Pedestal includes Base body and connecting rod；Base body is mounted on collet；Connecting rod parallel interval is connected on the inner side edge of Base body；In connecting rod, laterally spaced offer connecting hole；The laterally adjustable connection of connecting rod on the pedestal of the left and right sides；Track support includes web and track mount plate；Web is elongated along longitudinal direction to be fixed in Base body, and web from bottom to top gradually slopes inwardly；Track mount plate is vertically connected at the top of web；Track is along longitudinal direction in the middle part of the elongated plate face for being fixed on track mount plate.The present invention, which solves traditional spacing originated in pedestal between two rails of left and right, to be changed, and height variation is difficult to control and its adaptability and revolving the technical issues of being all extremely restricted when shield mounting height adjusts difficult, construction of bottom plates.
Description
Technical field
The invention belongs to mechanical engineering technical field, the base construction and its design method of especially a kind of shield machine.
Background technique
Shield machine is widely used in the engineerings such as tunnel piercing, is originating in working shaft, and the rear end of shield machine is one
A reaction frame, to provide the back of counter-force, bottom originates base using pedestal carrying shield machine is originated, by applying external force promotion
Seat is mobile to realize shield machine translation or traversing；Since shield machine huge structure, heavier-weight, movement range are not easy to control；It passes
The pedestal that originates of system is specially designed according to the shield machine of special diameter, the shield machine model adapted to and corresponding bottom plate
Face Installation Elevation is fixed data, Shield-bored tunnels section is changeable, starting well floor elevation design diversified the present
It, adaptability and revolving is all extremely limited.It is different straight to solve that a kind of eurytopic shield pedestal is needed as a result,
Shield launching Receiver Problem under diameter, varying environment.
Summary of the invention
The object of the present invention is to provide a kind of base construction of shield machine and its design method, to solve traditional to originate base
Spacing in seat between two rails of left and right can not change, and height variation is difficult to control when shield mounting height adjusts difficulty, construction of bottom plates
System and its adaptability and revolving the technical issues of being all extremely restricted.
To achieve the above object, the present invention adopts the following technical scheme that.
A kind of base construction of shield machine includes the base construction unit being arranged at left and right sides of shield motor spindle；Two
Laterally adjustable connection between a base construction unit；
The base construction unit includes the collet from bottom to top set gradually, pedestal, track support and track；The collet
In bar shaped plate, along longitudinal direction elongated setting, and it is fixedly connected between collet and tunnel floor；The pedestal includes pedestal master
Body and connecting rod；Base body is frame structure, is horizontally arranged on collet along longitudinal direction；The connecting rod has one group, along longitudinal direction
Parallel interval arrangement；Every connecting rod is connected laterally on the inner side edge of Base body；In connecting rod, laterally spaced open up
There is connecting hole；Corresponding front and back overlap joint between connecting rod on the pedestal of the left and right sides, and be correspondingly connected in hole by being threaded through
The laterally adjustable connection of connector；
The track support includes web and track mount plate；The web is elongated along longitudinal direction to be fixed in Base body, and
And web from bottom to top gradually slopes inwardly；The track mount plate is vertically connected at the top of web；In the outside of track support
It is provided with counter-force bracket；
The track is along longitudinal direction in the middle part of the elongated plate face for being fixed on track mount plate, and track is from bottom to top gradually lean-in
Tiltedly；The inclination angle of the track and the inclination angle of web are consistent, and rail pressing plate is respectively arranged with inside and outside track.
Preferably, vertical built-in fitting is provided in the collet；The built-in fitting has one group, and arranged for interval is in collet
In, and be welded to connect between pedestal and built-in fitting.
Preferably, the angle between the web and horizontal plane is 58 °~63.5 °.
Preferably, the Base body includes vertical pole, cross bar and brace；The cross bar has one group, longitudinally parallel
Every arrangement；The vertical pole is connected between the inner end of one group of cross bar；The brace inclination is connected between adjacent crossbars；The company
Extension bar is connected laterally on vertical pole, and the lap of splice of two connecting rods in left and right is 1000mm~1500mm.
Preferably, outer stiffener is provided on the outside of the web；The outer stiffener has one group, longitudinally spaced cloth
It sets；The top margin of outer stiffener and the bottom surface of track mount plate connect, and the bottom edge of outer stiffener is connect with Base body；The web
Inside be provided with interior stiffener；The interior stiffener has one group, longitudinally spaced arrangement, and interior stiffener and outer stiffener
Corresponding arrangement；The top margin of interior stiffener and the bottom surface of track mount plate connect, and the bottom edge of interior stiffener is connect with Base body.
Preferably, linking beam is equipped between the bottom of one group of outer stiffener；The linking beam connects one group of outer stiffener
It is connected into entirety.
Preferably, the counter-force bracket includes counter-force supporting plate and diagonal brace；The counter-force pallets level is connected to track peace
The outer end of loading board, and offer in the plate face of counter-force supporting plate the hole for installing counterforce device；The diagonal brace has one group,
It is supported on the bottom of counter-force supporting plate；The upper end support of diagonal brace connects in the bottom surface of counter-force supporting plate, and the lower end of diagonal brace is supported on linking beam.
Preferably, stiffening plate is equipped in the cross bar, at the position of respective carter bracket setting；The stiffening plate has one
Group, laterally spaced arrangement.
A kind of design method of the base construction of shield machine, including steps are as follows.
Step 1, determines the design parameter of base construction: design parameter include the width a of pedestal, track height b,
The spacing L of left and right track, the diameter D of shield machine, the top surface of tunnel floor and shield machine originating center axis design height difference
h1And the height difference h of rail head lowest part and base top surface2。
Step 2 is designed base construction according to step 1 the data obtained and Code for design of steel structures.
Spacing L between the track of left and right is determined by the diameter D of shield machine and the mounting stability demand angle θ of shield machine
Range, L=Dsin θ.
By the height difference h of rail head lowest part and base top surface2Determine the maximum angle θ for the shield machine that pedestal can support
Max=arccos(1-2h2/ D).
By the top surface of tunnel floor and the design height difference h of shield launching central axis1Calculate orbit altitude b:b=h1-
0.5D·cosθ= h1- 0.5Lscot θ, and determine track width L after pedestal connectionS: LSAccording to the diameter of conventional shield machine
Range Dmin~DmaxIt determines, is Ls=D·sinθ；Adjustment range value C:C=L of connecting rodmax-Lmin。
Step 3 verifies the stable structure and safety of pedestal, selects corresponding material and structure type, it is ensured that pedestal is full
The stability of sufficient use condition and safety do not have, and are analyzed by the whole stress and joints to pedestal, are installed using pedestal
Stability formula: FL+ Fs+ F1>=kF is determined；FLAxle power is allowed in the support of pedestal surrounding, the pedestal use with
Axle power F is allowed in the form of collet built-in fitting welding, the support of pedestal surroundingL=0；FsFor the friction between seat base and tunnel floor
Power；F1Between itself shear-carrying capacity of the built-in fitting in collet and built-in fitting and pedestal both shear-carrying capacities of weld seam compared with
Small person；K is safety coefficient, takes 1.5；F is the active force that shield machine thrust generates pedestal.
Step 4 adds functional component according to construction demand；Counter-force bracket is shield during consideration shield machine peace is torn open
The functional component added needed for structure machine locomotive function, so far design finishes.
Compared with prior art the invention has the characteristics that and beneficial effect.
1, the base construction in the present invention can be widely used in the shield machine of a certain range outer diameter (6250mm ~ 6900mm)
In installation and reception engineering, all transfer efficients are improved, and economic benefit is obvious.
2, in same engineering, base construction of the invention can surface elevation according to tunnel floor and tunnel portal center
The measurement result of elevation carries out installing preceding adjustment, in a certain range to the spacing between the height and track of pedestal and track
It is interior without being dug out to elevation or padded processing, the design of tunnel floor elevation Factors can be solved in a certain range or construction causes
The contradiction to conflict with parameter needed for shield-tunneling construction greatly improves construction efficiency, saves the duration.
3, base construction of the invention, including the two base construction units in left and right, and between two base construction units
Laterally adjustable connection；
This installation docking is convenient, has the characteristics of easy to use, to be suitable for the installation of various types of shield machines.
Detailed description of the invention
The present invention will be further described in detail with reference to the accompanying drawing.
Fig. 1 is cross-sectional configuration schematic diagram when base construction of the invention uses.
Fig. 2 is the planar structure schematic diagram of pedestal in the present invention.
Fig. 3 is the cross-sectional configuration schematic diagram of base construction unit in the present invention.
Fig. 4 is the layout drawing of collet in the present invention.
Fig. 5 is the structural schematic diagram of middle orbit pressing plate of the present invention.
Appended drawing reference: 1- shield machine, 2- collet, 3- pedestal, 3.1- Base body, 3.1.1- vertical pole, 3.1.2-
Cross bar, 3.1.3- brace, 3.2- connecting rod, 4- track support, 4.1- web, 4.2- track mount plate, 5- track,
6- tunnel floor, 7- connecting hole, 8- counter-force bracket, 8.1- counter-force supporting plate, 8.2- diagonal brace, 9- rail pressing plate, 9.1- pressure
Plate main body, 9.2- support plate, the outer stiffener of stiffener, 11-, 12- stiffening plate, 13- connector, 14- are linked in 10-
Beam, 15- hole, 16- bolt hole.
Specific embodiment
As shown in Figs. 1-5, the base construction of this shield machine includes the base being arranged at left and right sides of 1 bottom of shield machine
Holder structure unit；It is characterized by: laterally adjustable connection between two base construction units；
The base construction unit includes the collet 2 from bottom to top set gradually, pedestal 3, track support 4 and track 5；It is described
Collet 2 is fixedly connected between collet 2 and tunnel floor 6 in bar shaped plate, along longitudinal direction elongated setting；The pedestal 3 includes
There are Base body 3.1 and connecting rod 3.2；Base body 3.1 is frame structure, is horizontally arranged on collet 2 along longitudinal direction；The company
Extension bar 3.2 has one group, longitudinally parallel arranged for interval；Every connecting rod 3.2 is connected laterally at the inner side edge of Base body 3.1
On；In connecting rod 3.2, laterally spaced offer connecting hole 7；Before being corresponded between connecting rod 3.2 on left and right sides pedestal 3
After overlap, and by being threaded through the laterally adjustable connection of connector 13 being correspondingly connected in hole 7；
The track support 4 includes web 4.1 and track mount plate 4.2；The web 4.1 is elongated along longitudinal direction to be fixed on pedestal
In main body 3.1, and web 4.1 from bottom to top gradually slopes inwardly；The track mount plate 4.2 is vertically connected on web 4.1
Top；The outside of track support 4 is provided with counter-force bracket 8；
The track 5 along longitudinal direction it is elongated be fixed on track mount plate 4.2 plate face in the middle part of, and track 5 from bottom to top gradually to
It is tilted；The inclination angle of the track 5 is consistent with the inclination angle of web 4.1, and track pressure is respectively arranged with inside and outside track 5
Plate 9.
In the present embodiment, vertical built-in fitting is provided in the collet 2；The built-in fitting has one group, and arranged for interval exists
In collet 2, and it is welded to connect between pedestal 3 and built-in fitting.
In the present embodiment, the angle between the web 4.1 and horizontal plane is 58 °~63.5 °.
In the present embodiment, the Base body 3.1 includes vertical pole 3.1.1, cross bar 3.1.2 and brace 3.1.3；The cross
Bar 3.1.2 has one group, longitudinally parallel arranged for interval；The vertical pole 3.1.1 is connected between the inner end of one group of cross bar 3.1.2；
The brace 3.1.3 inclination is connected between adjacent crossbars 3.1.2；The connecting rod 3.2 is connected laterally on vertical pole 3.1.1,
And the lap of splice of two connecting rods 3.2 in left and right is 1000mm~1500mm.
In the present embodiment, the outside of the web 4.1 is provided with outer stiffener 11；The outer stiffener 11 has one group, edge
Longitudinal gap arrangement；The top margin of outer stiffener 11 is connect with the bottom surface of track mount plate 4.2, the bottom edge of outer stiffener 11 and pedestal
Main body 3.1 connects；The inside of the web 4.1 is provided with interior stiffener 10；The interior stiffener 10 has one group, longitudinally spaced
Arrangement, and the arrangement corresponding with outer stiffener 11 of interior stiffener 10；The top margin of interior stiffener 10 and the bottom surface of track mount plate 4.2
Connection, the bottom edge of interior stiffener 10 is connect with Base body 3.1.
In the present embodiment, linking beam 14 is equipped between the bottom of one group of outer stiffener 11；The linking beam 14 is by one group
Outer stiffener 11 connects integral.
In the present embodiment, the counter-force bracket 8 includes counter-force supporting plate 8.1 and diagonal brace 8.2；8.1 water of counter-force supporting plate
Flushconnection is offered in the outer end of track mount plate 4.2, and in the plate face of counter-force supporting plate 8.1 for installing counterforce device
Hole 15；The diagonal brace 8.2 has one group, is supported on the bottom of counter-force supporting plate 8.1；The upper end support of diagonal brace 8.2 connects in counter-force supporting plate
8.1 bottom surface, the lower end of diagonal brace 8.2 are supported on linking beam 14.
In the present embodiment, in the cross bar 3.1.2, stiffening plate 12 is equipped at the position that respective carter bracket 4 is arranged；It is described
Stiffening plate 12 has one group, laterally spaced arrangement.
In the present embodiment, it is spaced apart in the plate face of the collet 2 and is equipped with bolt hole 16；The collet 2 is by being threaded through spiral shell
Bolt in keyhole 16 is fixedly connected with tunnel floor 6.
In the present embodiment, the rail pressing plate 9 includes pressing plate main body 9.1 and support plate 9.2；The pressing plate main body 9.1
Cross section it is L-shaped, include vertical edge and horizontal edge；The vertical edge of the pressing plate main body 9.1 is tightly attached on the web of track 5, pressing plate
The horizontal edge of main body 9.1 is crimped on the bottom wing listrium of track 5；Exceed the bottom wing listrium of track 5 on the outside of the horizontal edge of pressing plate main body 9.1
Outer end, and be bolted on track mount plate 4.2 beyond position；The support plate 9.2 has one group, and interval is supported on
Between the horizontal edge and vertical edge of pressing plate main body 9.1, and every piece of support plate 9.2 is trapezoidal, and the top support of support plate 9.2 connects in track
5 top flange plate bottom；This structure of 9 pressing plate of rail pressing plate designs, and not only guarantees the jail that track 5 is connect with track mount plate
Solidity, and also improve the stress performance of track 5.
In the present embodiment, the connector 13 is bolt.
The design method of the base construction of this shield machine, including steps are as follows.
Step 1, determine the design parameter of base construction: design parameter includes the height of the width a of pedestal 3, track 5
B, the spacing L of left and right track 5, the diameter D of shield machine 1, the top surface of tunnel floor 6 and setting for the originating center axis of shield machine 1
Count height difference h1And the height difference h of track 5 rail head lowest part and 3 top surface of pedestal2。
Step 2 is designed base construction according to step 1 the data obtained and Code for design of steel structures.
By the diameter D of shield machine 1 and the mounting stability demand angle θ of shield machine 1 come between determining between left and right track 5
Range away from L, L=Dsin θ.
By the height difference h of track 5 rail head lowest part and 3 top surface of pedestal2Determine the maximum for the shield machine 1 that pedestal 3 can support
Angle, θ max=arccos1-2h2/D。
By the top surface of tunnel floor 6 and the design height difference h of shield launching central axis1Calculate orbit altitude b:b=h1-
0.5D·cosθ= h1- 0.5Lscot θ, and determine track width L after the connection of pedestal 3S: LSAccording to the straight of conventional shield machine 1
Diameter range Dmin~DmaxIt determines, is Ls=D·sinθ；Adjustment range value C:C=L of connecting rod 3.2max-Lmin。
Step 3 verifies the stable structure and safety of pedestal, selects corresponding material and structure type, it is ensured that pedestal 3
The stability and safety for meeting use condition do not have, and are analyzed by the whole stress and joints to pedestal 3, are pacified using pedestal
Fill stability formula: FL+ Fs+ F1>=kF is determined；FLAxle power is allowed in the support of 3 surrounding of pedestal, and the pedestal 3 is adopted
With the form welded with 2 built-in fitting of collet, axle power F is allowed in the support of 3 surrounding of pedestalL=0；FsBetween seat base 3 and tunnel floor 6
Frictional force；F1The shear-carrying capacity of weld seam between itself shear-carrying capacity of the built-in fitting in collet 2 and built-in fitting and pedestal 3
The smaller of the two；K is safety coefficient, takes 1.5；F is the active force that shield machine thrust generates pedestal.
Step 4 adds functional component according to construction demand；Counter-force bracket 8 is during considering that shield machine peace is torn open
The functional component added needed for shield machine locomotive function, so far design finishes.
Above-described embodiment is not the exhaustion of specific embodiment, can also there is other embodiments, and above-described embodiment purpose exists
In illustrating the present invention, the protection scope being not intended to limit the present invention, all applications from simple change of the present invention all fall within this
In the protection scope of invention.
Claims (9)
1. a kind of base construction of shield machine includes the base construction unit being arranged at left and right sides of shield machine (1) bottom；Its
It is characterized in that: laterally adjustable connection between two base construction units；
The base construction unit includes the collet (2) from bottom to top set gradually, pedestal (3), track support (4) and track
(5)；The collet (2) is in bar shaped plate, along longitudinal direction elongated setting, and fixed company between collet (2) and tunnel floor (6)
It connects；The pedestal (3) includes Base body (3.1) and connecting rod (3.2)；Base body (3.1) is frame structure, along longitudinal direction
It is horizontally arranged on collet (2)；The connecting rod (3.2) has one group, longitudinally parallel arranged for interval；Every connecting rod (3.2)
It is connected laterally on the inner side edge of Base body (3.1)；On connecting rod (3.2), laterally spaced offer connecting hole (7)；
Corresponding front and back overlap joint between connecting rod (3.2) on left and right sides pedestal (3), and be correspondingly connected in hole (7) by being threaded through
Connector (13) laterally adjustable connection；
The track support (4) includes web (4.1) and track mount plate (4.2)；The web (4.1) is elongated solid along longitudinal direction
It is scheduled on Base body (3.1), and web (4.1) from bottom to top gradually slopes inwardly；The track mount plate (4.2) is vertical
It is connected at the top of web (4.1)；Counter-force bracket (8) are provided on the outside of track support (4)；
The track (5) is along longitudinal direction in the middle part of the elongated plate face for being fixed on track mount plate (4.2), and track (5) is from bottom to top
Gradually slope inwardly；The inclination angle of the track (5) is consistent with the inclination angle of web (4.1), and inside and outside track (5) respectively
It is provided with rail pressing plate (9).
2. the base construction of shield machine according to claim 1, it is characterised in that: be provided in the collet (2) vertical
Built-in fitting；The built-in fitting has one group, and arranged for interval is in collet (2), and the company of welding between pedestal (3) and built-in fitting
It connects.
3. the base construction of shield machine according to claim 1, it is characterised in that: the web (4.1) and horizontal plane it
Between angle be 58 °~63.5 °.
4. the base construction of shield machine according to claim 1, it is characterised in that: the Base body (3.1) includes
Vertical pole (3.1.1), cross bar (3.1.2) and brace (3.1.3)；The cross bar (3.1.2) has one group, longitudinally parallel interval cloth
It sets；The vertical pole (3.1.1) is connected between the inner end of one group of cross bar (3.1.2)；Brace (3.1.3) inclination is connected to phase
Between adjacent cross bar (3.1.2)；The connecting rod (3.2) is connected laterally on vertical pole (3.1.1), and two connecting rods in left and right
(3.2) the lap of splice is 1000mm~1500mm.
5. the base construction of shield machine according to claim 1, it is characterised in that: the outside of the web (4.1) is arranged
There are outer stiffener (11)；The outer stiffener (11) has one group, longitudinally spaced arrangement；The top margin and track of outer stiffener (11)
The bottom surface of mounting plate (4.2) connects, and the bottom edge of outer stiffener (11) is connect with Base body (3.1)；The web (4.1) it is interior
Side is provided with interior stiffener (10)；The interior stiffener (10) has one group, longitudinally spaced arrangement, and interior stiffener (10) with
The corresponding arrangement of outer stiffener (11)；The top margin of interior stiffener (10) is connect with the bottom surface of track mount plate (4.2), interior stiffener
(10) bottom edge is connect with Base body (3.1).
6. the base construction of shield machine according to claim 5, it is characterised in that: in the bottom of one group of outer stiffener (11)
Between be equipped with linking beam (14)；The linking beam (14) is integral by one group of outer stiffener (11) connection.
7. the base construction of shield machine according to claim 6, it is characterised in that: the counter-force bracket (8) includes anti-
Power supporting plate (8.1) and diagonal brace (8.2)；The counter-force supporting plate (8.1) is connected horizontally on the outer end of track mount plate (4.2), and
The hole (15) for installing counterforce device is offered in the plate face of counter-force supporting plate (8.1)；The diagonal brace (8.2) has one group,
It is supported on the bottom of counter-force supporting plate (8.1)；The upper end support of diagonal brace (8.2) connects in the bottom surface of counter-force supporting plate (8.1), diagonal brace (8.2)
Lower end be supported on linking beam (14).
8. the base construction of shield machine according to claim 4, it is characterised in that: in the cross bar (3.1.2), correspond to rail
Stiffening plate (12) are equipped at the position of road bracket (4) setting；The stiffening plate (12) has one group, laterally spaced arrangement.
9. the design method of the base construction of shield machine described in a kind of any one of claim 1-8, which is characterized in that packet
Include that steps are as follows:
Step 1, determine the design parameter of base construction: design parameter includes the height of the width a of pedestal (3), track (5)
B, the originating center of the top surface and shield machine (1) of the spacing L of left and right track (5), the diameter D of shield machine (1), tunnel floor (6)
The design height difference h of axis1And the height difference h of track (5) rail head lowest part and pedestal (3) top surface2；
Step 2 is designed base construction according to step 1 the data obtained and Code for design of steel structures:
It is determined between left and right track (5) by the diameter D of shield machine (1) and the mounting stability demand angle θ of shield machine (1)
The range of spacing L, L=Dsin θ；
By the height difference h of track (5) rail head lowest part and pedestal (3) top surface2Determine shield machine (1) that pedestal (3) can support most
Wide-angle θ max=arccos(1-2h2/ D)；
By the top surface of tunnel floor (6) and the design height difference h of shield launching central axis1Calculate orbit altitude b:b=h1-0.5D·
cosθ= h1- 0.5Lscot θ, and determine track width L after pedestal (3) connectionS: LSAccording to the diameter of conventional shield machine (1)
Range Dmin~DmaxIt determines, is Ls=D·sinθ；Adjustment range value C:C=L of connecting rod (3.2)max-Lmin；
Step 3 verifies the stable structure and safety of pedestal, selects corresponding material and structure type, it is ensured that pedestal (3) is full
The stability of sufficient use condition and safety do not have, and by the whole stress and joints analysis to pedestal (3), are pacified using pedestal
Fill stability formula: FL+ Fs+ F1>=kF is determined；FLAxle power, the pedestal are allowed in the support of pedestal (3) surrounding
(3) using the form welded with collet (2) built-in fitting, axle power F is allowed in the support of pedestal (3) surroundingL=0；FsFor seat base (3) and tunnel
Frictional force between road bottom plate (6)；F1For in collet (2) built-in fitting itself shear-carrying capacity and built-in fitting and pedestal (3) it
Between weld seam both shear-carrying capacities smaller；K is safety coefficient, takes 1.5；F is the work that shield machine thrust generates pedestal
Firmly；
Step 4 adds functional component according to construction demand；Counter-force bracket (8) is shield during consideration shield machine peace is torn open
The functional component added needed for structure machine locomotive function, so far design finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910870973.3A CN110439578B (en) | 2019-09-16 | 2019-09-16 | Base structure of shield tunneling machine and design method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910870973.3A CN110439578B (en) | 2019-09-16 | 2019-09-16 | Base structure of shield tunneling machine and design method thereof |
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| CN110439578B CN110439578B (en) | 2024-02-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905534A (en) * | 2019-12-10 | 2020-03-24 | 中铁十四局集团隧道工程有限公司 | Base structure |
| CN114233307A (en) * | 2021-12-20 | 2022-03-25 | 中铁十四局集团大盾构工程有限公司 | Major diameter slurry shield does receiving arrangement |
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