CN109356599A - Shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope - Google Patents
Shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope Download PDFInfo
- Publication number
- CN109356599A CN109356599A CN201811579242.5A CN201811579242A CN109356599A CN 109356599 A CN109356599 A CN 109356599A CN 201811579242 A CN201811579242 A CN 201811579242A CN 109356599 A CN109356599 A CN 109356599A
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- China
- Prior art keywords
- endless tube
- shield
- assembled
- pieces
- tube pieces
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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
-
- 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
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
Abstract
The invention discloses shield semi-rings under the conditions of a kind of big longitudinal slope to originate construction method, comprising: one, mounting bracket and reaction frame；Two, it assembled negative endless tube piece: specifically includes: 201, assembled -8 endless tube pieces~-3 endless tube pieces；202, assembled -2 endless tube pieces；203, assembled -1 endless tube piece；Three, assembled 0 endless tube piece；Four, the top opened between the anterior shield and middle shield of shield is hinged, and shield continues to tunnel by ring, completes shield semi-ring and originates.Construction method strong operability of the invention, posture of the center line of shield in vertical direction gradually with the descending of the design grade of big longitudinal slope can be made to match when shield, which starts, tunnels, phenomena such as capable of preventing negative endless tube piece from rupture or discontinuity occurs, it can guarantee the ovality and flatness of negative endless tube piece, so that ensure that shield originates posture.
Description
Technical field
The invention belongs to constructing tunnel shield launching technical fields, and in particular to shield semi-ring begins under the conditions of a kind of big longitudinal slope
Send out construction method.
Background technique
Shield tunnel driving has upper one-hundred-year history, ripe day by day by the fast development of nearly half a century.In state
In interior underground engineering construction, the advantages such as shield method is safe with its, high-quality, efficient, environmentally friendly, labor intensity is low are in Urban Underground rail
The engineerings such as road and underground utilities are widely used, and it is shield when originating that wherein semi-ring, which originates, long due to being originated well head
Degree, width and the limitation for lifting wellhole, and the special originating mode taken, semi-ring refer to only installation lower part section of jurisdiction, section of jurisdiction of binding
It does not install, reserves the space of lifting, make in the construction process, lifting can be normally carried out by originating well head.Shield launching is that shield is applied
One of key link of work, usual shield AT STATION end originate well head assembling, originate, originate about 60 meters of well head in distance and open
If interim soil outlet, to meet the vertical transport needs for originating stage section of jurisdiction and dregs；But during practice of construction, often go out
It is now limited by existing site condition, can not be arranged simultaneously and originate well head and interim soil outlet；The design for usually originating well head is vertical
Slope is mostly 8 ‰~15 ‰, when the design longitudinal slope for originating well head is greater than 15 ‰, i.e., referred to as big longitudinal slope condition, in big longitudinal slope item
Under part, the posture that originates of shield is difficult to control within the scope of the posture to match to the descending of the design grade with big longitudinal slope, is caused
Shield semi-ring under the conditions of big longitudinal slope originate it is existing be difficult to the phenomenon that constructing, therefore, it should under the conditions of a kind of big longitudinal slope is provided
Shield semi-ring originates construction method.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of big longitudinal slope item
Shield semi-ring originates construction method under part, when shield, which starts, tunnels, can make the center line of shield in vertical direction by
Gradually the posture with the descending of the design grade of big longitudinal slope matches, and can prevent negative endless tube piece from rupture or discontinuity occurs
Phenomena such as, it can guarantee the ovality and flatness of negative endless tube piece, so that ensure that shield originates posture.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: shield semi-ring begins under the conditions of a kind of big longitudinal slope
Send out construction method, it is characterised in that: the following steps are included:
Step 1: mounting bracket and reaction frame: originating the stage according to the lifting of shield and assemble stable and shield
The factor of the aspect of gesture stability two determines that the gradient of bracket required for the shield launching under the conditions of big longitudinal slope is 10 ‰, it
Afterwards, mounting bracket and reaction frame, and lift shield；The big longitudinal slope refers to that the design longitudinal slope for originating well head is greater than 15 ‰；
Step 2: assembled negative endless tube piece: the negative endless tube piece of 8 rings being arranged altogether originating well head, wherein -8 endless tube pieces~-2 endless tubes
The mode that piece is all made of semi-ring assembly carries out assembly, and -1 endless tube piece carries out assembly by the way of erecting ring in whole, meanwhile, -8 endless tubes
Staggered joint erection, -8 endless tube pieces, -6 endless tube pieces, -4 endless tube pieces are used in piece~-2 endless tube pieces between arbitrary neighborhood two negative endless tube pieces
Identical with the structure of -2 endless tube pieces, -7 endless tube pieces, -5 endless tube pieces are identical with the structure of -3 endless tube pieces, and detailed process includes following step
It is rapid:
Step 201, assembled -8 endless tube pieces~-3 endless tube pieces: well head successively assembly -8 is being originated by the way of staggered joint erection
Endless tube piece~-3 endless tube pieces, during successively assembled -8 endless tube pieces~-3 endless tube piece, in -8 endless tube pieces~-3 endless tube pieces
The top half of assembled circumferential weld between arbitrary neighborhood two negative endless tube pieces inserts backing plate, and in -8 endless tube pieces~-3 endless tube pieces
In support rod is installed at fissure of displacement position between two negative endless tube pieces being arbitrarily separated by；
Step 202, assembled -2 endless tube pieces: shield tunnels forward a ring, meanwhile, it is backbreak plain concrete using bottom knife of backbreaking
It is spelled later according to the method for any one negative endless tube piece of ring in -8 endless tube pieces~-3 endless tube pieces assembled in step 201 bottom of stake
- 2 endless tube pieces are filled, later, the top half of the assembled circumferential weld between -3 endless tube piece and -2 endless tube piece inserts backing plate,
And support rod is installed at the fissure of displacement position between -4 endless tube piece and -2 endless tube piece；
Step 203, assembled -1 endless tube piece: a ring is tunneled forward in shield continuation, assembled -1 endless tube in a manner of erecting ring in whole
Piece；
Step 3: assembled 0 endless tube piece: a ring is tunneled forward in shield continuation, the assembled 0 endless tube piece in a manner of erecting ring in whole；
Step 4: the top opened between the anterior shield and middle shield of shield is hinged, shield continues to tunnel by ring, completes shield half
Ring originates.
Shield semi-ring originates construction method under the conditions of a kind of above-mentioned big longitudinal slope, it is characterised in that: in step 202 and step
In 203, during the shield is tunneled forward, be all made of it is small soil bucket from it is described originate the upward handling of well head be unearthed.
Shield semi-ring originates construction method under the conditions of a kind of above-mentioned big longitudinal slope, it is characterised in that: in step 2, -8 endless tubes
Piece, -6 endless tube pieces, -4 endless tube pieces and -2 endless tube pieces are made of B1 block section of jurisdiction, B2 block section of jurisdiction, B3 block section of jurisdiction and L1 block section of jurisdiction, and -7
Endless tube piece, -5 endless tube pieces and -3 endless tube pieces are made of B1 block section of jurisdiction, B2 block section of jurisdiction, B3 block section of jurisdiction and L2 block section of jurisdiction, -1 endless tube
Piece is made of B1 block section of jurisdiction, B2 block section of jurisdiction, B3 block section of jurisdiction, L2 block section of jurisdiction and K1 block section of jurisdiction.
Shield semi-ring originates construction method under the conditions of a kind of above-mentioned big longitudinal slope, it is characterised in that: in step 201, assembled-
8 endless tube pieces~-3 endless tube pieces detailed process the following steps are included:
Step 2011, assembled -8 endless tube pieces: -8 endless tube pieces of lifting to the assembled position of design；Later, using the first negative ring
Support is fixed to -8 endless tube piece in section of jurisdiction support device, is arranged in the described first negative endless tube piece support device and is hooked on
The first connecting hook on the L1 block section of jurisdiction of -8 endless tube piece；
Step 2012, assembled -7 endless tube pieces, concrete operation method are as follows: -7 endless tube pieces of lifting to the assembled position of design, and
Support is fixed to -7 endless tube piece using the second negative endless tube piece support device, in the described second negative endless tube piece support device
Upper setting is hooked on the second connecting hook on the L2 block section of jurisdiction of -7 endless tube pieces；Later, in -8 endless tube piece and described -7
The top half of assembled circumferential weld between endless tube piece inserts backing plate；
Step 2013, assembled -6 endless tube pieces of method according to -8 endless tube pieces assembled in step 2011, later, in -7 ring
The top half of assembled circumferential weld between section of jurisdiction and -6 endless tube piece inserts backing plate, and in -8 endless tube piece and -6 ring
Support rod is installed at the fissure of displacement position between section of jurisdiction；
Step 2014, assembled -5 endless tube pieces of method according to -7 endless tube pieces assembled in step 2012, later, in -6 ring
The top half of assembled circumferential weld between section of jurisdiction and -5 endless tube piece inserts backing plate, and in -7 endless tube piece and -5 ring
Support rod is installed at the fissure of displacement position between section of jurisdiction；
Step 2015, assembled -4 endless tube pieces of method according to -8 endless tube pieces assembled in step 2011, later, in -5 ring
The top half of assembled circumferential weld between section of jurisdiction and -4 endless tube piece inserts backing plate, and in -6 endless tube piece and -4 ring
Support rod is installed at the fissure of displacement position between section of jurisdiction；
Step 2016, assembled -3 endless tube pieces of method according to -7 endless tube pieces assembled in step 2012, later, in -4 ring
The top half of assembled circumferential weld between section of jurisdiction and -3 endless tube piece inserts backing plate, and in -5 endless tube piece and -3 ring
Support rod is installed at the fissure of displacement position between section of jurisdiction.
Shield semi-ring originates construction method under the conditions of a kind of above-mentioned big longitudinal slope, it is characterised in that: step 2011 and step
In 2012, the first negative endless tube piece support device is identical with the structure of the described second negative endless tube piece support device, and described first
Negative endless tube piece support device and the second negative endless tube piece support device include the timber wedge that the negative endless tube piece bottom is set,
Two branch is located at the triangular support bracket of the negative endless tube piece two sides of the bottom respectively and branch is located at the top of the negative endless tube piece respectively
The top of the first bearing diagonal is arranged in the first bearing diagonal and the second bearing diagonal of two sides, first connecting hook, and described second connects
Connect the top that the second bearing diagonal is arranged in hook.
Shield semi-ring originates construction method under the conditions of a kind of above-mentioned big longitudinal slope, it is characterised in that: described in step 201
The steel plate that backing plate uses with a thickness of 10mm.
Shield semi-ring originates construction method under the conditions of a kind of above-mentioned big longitudinal slope, it is characterised in that: in step 4, works as opening
When top between the anterior shield of shield and middle shield is hinged, spacing between the top of anterior shield and the top of middle shield be 80mm~
120mm。
Compared with the prior art, the present invention has the following advantages:
1, the present invention is by the assembled circumferential weld in -8 endless tube pieces~-3 endless tube pieces between arbitrary neighborhood two negative endless tube pieces
Top half insert backing plate, can make -8 endless tube pieces~-3 endless tube piece center lines in vertical direction to bracket one roll
Tiltedly, the center line of shield is formed in vertical direction to the inclined trend in bracket side, when shield, which starts, tunnels, shield
Center line in vertical direction can the posture gradually with the descending of the design grade of big longitudinal slope match.
2, the present invention in -8 endless tube pieces of staggered joint erection~-3 endless tube pieces by being arbitrarily separated by between two negative endless tube pieces
Support rod is installed, -7 endless tube pieces~-3 endless tube pieces one entirety of formation of staggered joint erection can be made, convenient for being located at shield top
All oil cylinder reinforcings in region, during shield driving, can prevent -8 endless tube pieces~-3 endless tube pieces from rupturing
Or phenomena such as discontinuity, when all oil cylinders reinforcings being located in shield upper area, can make shield formed to
The trend of lower deflection, keeps driving attitude easily controllable.
3, the present invention by using bottom backbreak knife backbreak plain concrete pile bottom mode, make the anterior shield of shield hang down
Histogram moves down upwards, and when shield, which starts, tunnels, the center line of shield in vertical direction can gradually setting to big longitudinal slope
Count the descending side inclination of the gradient.
4, the present invention mode hinged by the top for opening shield, continues the anterior shield of shield in vertical direction downwards
Mobile, when shield, which starts, tunnels, the center line of shield will continue to the descending of the design grade to big longitudinal slope in vertical direction
Side inclination.
5, construction method strong operability of the present invention, it is easy to promote and utilize.
In conclusion construction method strong operability of the invention, the center line of shield can be made when shield, which starts, tunnels
The posture gradually with the descending of the design grade of big longitudinal slope matches in vertical direction, can prevent negative endless tube piece from rupturing
Or phenomena such as discontinuity, it can guarantee the ovality and flatness of negative endless tube piece, so that ensure that shield originates appearance
State.
Below by drawings and examples, the present invention is described in further detail.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Fig. 2 is the Construction State schematic diagram that the present invention installs bracket and reaction frame.
Fig. 3 is the structural schematic diagram of -8 endless tube pieces of the present invention, -6 endless tube pieces, -4 endless tube pieces and -2 endless tube pieces.
Fig. 4 is the structural schematic diagram of -7 endless tube pieces of the present invention, -5 endless tube pieces and -3 endless tube pieces.
Fig. 5 is the structural schematic diagram of -1 endless tube piece and 0 endless tube piece of the invention.
Fig. 6 is the present invention successively Construction State signal of assembled -8 endless tube pieces~-3 endless tube pieces by the way of staggered joint erection
Figure
Fig. 7 is the top view of Fig. 6.
Fig. 8 is the A-A cross-sectional view of Fig. 7.
Fig. 9 is the Construction State schematic diagram of plain concrete pile of the invention of backbreaking.
Figure 10 is the Construction State schematic diagram of assembled -2 endless tube pieces of the present invention.
Figure 11 is the assembled 0 endless tube piece of the present invention, and the Construction State schematic diagram that the top for opening shield is hinged.
Description of symbols:
1-originates well head；2-building enclosures；3-plain concrete piles；
4-shields；5-spiral conveying mechanisms；6-brackets；
7-reaction frames；8-1-B1 block section of jurisdiction；8-2-B2 block section of jurisdiction；
8-3-B3 block section of jurisdiction；8-4-L1 block section of jurisdiction；8-5-L2 block section of jurisdiction；
8-5-K1 block section of jurisdiction；9-1-timber wedge；9-2-triangular support bracket；
The first bearing diagonal of 9-3-；The second bearing diagonal of 9-4-；10-backing plates；
11-support rods；12-segment cars；13-the first connecting hook；
14-the second connecting hook.
Specific embodiment
Shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope as shown in Figure 1 to 11, comprising the following steps:
As shown in Fig. 2, Step 1: mounting bracket and reaction frame: according to the lifting of shield 4 and assemble stable and shield 4
In the factor of two aspects of the gesture stability for originating the stage, determine that the shield 4 under the conditions of big longitudinal slope originates required bracket 6
The gradient is 10 ‰, later, mounting bracket 6 and reaction frame 7, and and lift shield 4；The big longitudinal slope refers to the design for originating well head 1
Longitudinal slope is greater than 15 ‰；
In actual use, the design longitudinal slope for usually originating well head 1 is mostly 8 ‰~15 ‰, therefore it may only be necessary to by bracket 6
The gradient be 8 ‰~15 ‰, shield launching posture can be met and design the posture range that matches of longitudinal slope descending, still,
When the design longitudinal slope for originating well head 1 is greater than 15 ‰, i.e., referred to as big longitudinal slope condition, in the present embodiment, the design for originating well head 1 is vertical
Slope is 21 ‰, the posture that originates of shield can not be adjusted by way of being 21 ‰ by the gradient of bracket 6, so as to cause shield
The posture that originates be difficult to control within the scope of the posture to match to the descending of the design grade with big longitudinal slope, therefore, in step 1
In, it is only 10 ‰ by the gradient of bracket 6, and originate the difference between the design longitudinal slope of well head 1 and the gradient of bracket 6 and need rear
It is compensated in continuous step.
In actual use, it originates 11 side of well head and is provided with building enclosure 2, originate well head 11 and be used as bracket 6, reaction frame 7
With the handling channel of shield 4.
As shown in Figures 3 to 8, Step 2: assembled negative endless tube piece: originating well head 1, the negative endless tube piece of 8 rings is set altogether,
In, the mode that -8 endless tube pieces~-2 endless tube pieces are all made of semi-ring assembly carries out assembly, and -1 endless tube piece is by the way of erecting ring in whole
Assembly is carried out, meanwhile, staggered joint erection, -8 endless tubes are used in -8 endless tube pieces~-2 endless tube pieces between arbitrary neighborhood two negative endless tube pieces
Piece, -6 endless tube pieces, -4 endless tube pieces are identical with the structure of -2 endless tube pieces, the structure phase of -7 endless tube pieces, -5 endless tube pieces and -3 endless tube pieces
Together, detailed process the following steps are included:
Step 201, assembled -8 endless tube pieces~-3 endless tube pieces: the successively assembly-of well head 1 is being originated by the way of staggered joint erection
8 endless tube pieces~-3 endless tube pieces, during successively assembled -8 endless tube pieces~-3 endless tube piece, in -8 endless tube pieces~-3 endless tube pieces
The top half of assembled circumferential weld between arbitrary neighborhood two negative endless tube pieces inserts backing plate 10, and in -8 endless tube pieces~-3 endless tubes
Support rod 11 is installed at the fissure of displacement position between the negative endless tube piece of two be arbitrarily separated by piece；
In the present embodiment, when the design longitudinal slope for originating well head 1 is big longitudinal slope, negative endless tube piece cannot implement erecting ring in whole,
Especially when -8 endless tube pieces~-3 endless tube piece tops there are after hoisting passage, will lead to shield 4 originate the stage driving when,
All oil cylinders in 4 upper area of shield cannot be reinforced normally, cause the center line of shield 4 difficult in vertical direction
To control within the scope of the posture to match to the descending of the design grade with big longitudinal slope, therefore, in the present embodiment, by successively
During assembled -8 endless tube pieces~-3 endless tube pieces, in -8 endless tube pieces~-3 endless tube pieces between arbitrary neighborhood two negative endless tube pieces
The top half of assembled circumferential weld insert backing plate 10, -8 endless tube pieces~-3 endless tube pieces center line can be made in vertical direction
It is tilted to 6 side of bracket, forms the center line of shield 4 in vertical direction to the inclined trend in 6 side of bracket, when shield 4
Starting driving when, the center line of shield 4 in vertical direction can gradually with the posture phase of the descending of the design grade of big longitudinal slope
Match.
In the present embodiment, by during successively assembled -8 endless tube pieces~-3 endless tube piece, in -8 rings of staggered joint erection
Arbitrarily it is separated by installation support rod 11 between two negative endless tube pieces in section of jurisdiction~-3 endless tube pieces, -7 endless tube pieces of staggered joint erection can be made
One entirety of formation of~-3 endless tube pieces is tunneled convenient for being located at all oil cylinder reinforcings in 4 upper area of shield in shield 4
During, phenomena such as capable of preventing -8 endless tube pieces~-3 endless tube pieces from rupture or discontinuity occurs, when being located in shield 4
When all oil cylinders in portion region reinforce, shield 4 can be made to form the trend deflected down, keep driving attitude easily controllable.
As shown in Figure 9 and Figure 10, step 202, assembled -2 endless tube pieces: shield 4 tunnels forward a ring, meanwhile, using bottom
Knife of backbreaking is backbreak the bottom of plain concrete pile 3, later, according to any one in -8 endless tube pieces~-3 endless tube pieces assembled in step 201
Assembled -2 endless tube pieces of the method for the negative endless tube piece of ring, later, the assembled circumferential weld between -3 endless tube piece and -2 endless tube piece
Top half insert backing plate 10, and at the fissure of displacement position between -4 endless tube piece and -2 endless tube piece install support rod
11；
In the present embodiment, by using bottom backbreak knife backbreak plain concrete pile 3 bottom mode, before making shield 4
Shield moves down in vertical direction, and when shield 4, which starts, tunnels, the center line of shield 4 in vertical direction can be gradually to big
The descending side of the design grade of longitudinal slope tilts.
In actual use, when shield 4, which starts, tunnels, the cutterhead of shield 4 moves closer to plain concrete pile 3, when shield 4
When spacing between cutterhead and plain concrete pile 3 is 10cm~15cm, opens bottom and backbreak knife, to the bottom of plain concrete pile 3
It backbreaks, the range of depth of backbreaking h is 80mm~120mm；
Step 203, assembled -1 endless tube piece: a ring is tunneled forward in the continuation of shield 4, assembled -1 endless tube in a manner of erecting ring in whole
Piece；
As shown in figure 11, Step 3: assembled 0 endless tube piece: a ring is tunneled forward in the continuation of shield 4, in a manner of erecting ring in whole
Assembled 0 endless tube piece；
As shown in figure 5, the structure of 0 endless tube piece is identical as the structure of -1 endless tube piece, therefore, the mounting means of 0 endless tube piece with -
The mounting means of 1 endless tube piece is identical.
Step 4: the top opened between the anterior shield and middle shield of shield 4 is hinged, shield 4 continues to tunnel by ring, completes shield
4 semi-rings originate.
In the present embodiment, by opening the hinged mode in top of shield 4, make the anterior shield of shield 4 in vertical direction after
Continuous to move down, when shield 4, which starts, tunnels, the center line of shield 4 will continue to the design slope to big longitudinal slope in vertical direction
The descending side of degree tilts.
In the present embodiment, during the shield 4 is tunneled forward, be all made of it is small soil bucket from it is described originate well head 1 to
It hangs oneself and transports soil.
In the present embodiment, due to being limited by geographical conditions, well head 1 is only originated, without individual interim soil outlet, because
This, originates well head 1 and not only needs vertical transport channel as negative endless tube piece and positive endless tube piece, but also needs hanging down as dregs
Straight handling channel.
In the present embodiment, during shield 4 is tunneled, dregs is delivered in small soil bucket by spiral conveying mechanism 5,
Convenient, using effect is operated by dregs from the handling vertically upward of well head 1 is originated by the mode that segment car 12 hauls small soil bucket again
It is good.
In the present embodiment, in step 2, -8 endless tube pieces, -6 endless tube pieces, -4 endless tube pieces and -2 endless tube pieces are by B1 block section of jurisdiction
8-1, B2 block section of jurisdiction 8-2, B3 block section of jurisdiction 8-3 and L1 block section of jurisdiction 8-4 composition, -7 endless tube pieces, -5 endless tube pieces and -3 endless tube pieces by
B1 block section of jurisdiction 8-1, B2 block section of jurisdiction 8-2, B3 block section of jurisdiction 8-3 and L2 block section of jurisdiction 8-5 composition, -1 endless tube piece is by B1 block section of jurisdiction 8-1, B2
Block section of jurisdiction 8-2, B3 block section of jurisdiction 8-3, L2 block section of jurisdiction 8-5 and K1 block section of jurisdiction 8-6 composition.
In the present embodiment, in step 201, the detailed processes of assembled -8 endless tube pieces~-3 endless tube pieces the following steps are included:
Step 2011, assembled -8 endless tube pieces: -8 endless tube pieces of lifting to the assembled position of design；Later, using the first negative ring
Support is fixed to -8 endless tube piece in section of jurisdiction support device, is arranged in the described first negative endless tube piece support device and is hooked on
The first connecting hook 13 on the L1 block section of jurisdiction 8-4 of -8 endless tube piece；
Step 2012, assembled -7 endless tube pieces, concrete operation method are as follows: -7 endless tube pieces of lifting to the assembled position of design, and
Support is fixed to -7 endless tube piece using the second negative endless tube piece support device, in the described second negative endless tube piece support device
Upper setting is hooked on the second connecting hook 14 on the L2 block section of jurisdiction 8-5 of -7 endless tube pieces；Later, in -8 endless tube piece and institute
State the top half inserting backing plate 10 of the assembled circumferential weld between -7 endless tube pieces；
Step 2013, assembled -6 endless tube pieces of method according to -8 endless tube pieces assembled in step 2011, later, in -7 ring
The top half of assembled circumferential weld between section of jurisdiction and -6 endless tube piece inserts backing plate 10, and in -8 endless tube piece and described -6
Support rod 11 is installed at the fissure of displacement position between endless tube piece；
Step 2014, assembled -5 endless tube pieces of method according to -7 endless tube pieces assembled in step 2012, later, in -6 ring
The top half of assembled circumferential weld between section of jurisdiction and -5 endless tube piece inserts backing plate 10, and in -7 endless tube piece and described -5
Support rod 11 is installed at the fissure of displacement position between endless tube piece；
Step 2015, assembled -4 endless tube pieces of method according to -8 endless tube pieces assembled in step 2011, later, in -5 ring
The top half of assembled circumferential weld between section of jurisdiction and -4 endless tube piece inserts backing plate 10, and in -6 endless tube piece and described -4
Support rod 11 is installed at the fissure of displacement position between endless tube piece；
Step 2016, assembled -3 endless tube pieces of method according to -7 endless tube pieces assembled in step 2012, later, in -4 ring
The top half of assembled circumferential weld between section of jurisdiction and -3 endless tube piece inserts backing plate 10, and in -5 endless tube piece and described -3
Support rod 11 is installed at the fissure of displacement position between endless tube piece.
In the present embodiment, at the fissure of displacement position between two negative endless tube pieces that is arbitrarily separated by -8 endless tube pieces~-3 endless tube pieces
The quantity of the support rod 11 of installation is two.
In the present embodiment, in step 2011, -8 endless tube piece is consolidated when using the first negative endless tube piece support device
After fixed support, it is also necessary to which setting is hooked on the L1 block section of jurisdiction of -8 endless tube pieces in the described first negative endless tube piece support device
The purpose of the first connecting hook 13 on 8-4 is: the L1 block section of jurisdiction 8-4 of -8 endless tube pieces drops and causes institute in order to prevent
The generation for the phenomenon that stating -8 endless tube piece anchor ring out-of-flatness, structure is simple, and using effect is good.
In the present embodiment, in step 2012, -7 endless tube piece is consolidated when using the second negative endless tube piece support device
After fixed support, it is also necessary to which setting is hooked on the L2 block section of jurisdiction of -7 endless tube pieces in the described second negative endless tube piece support device
The purpose of the second connecting hook 14 on 8-5 is: the L2 block section of jurisdiction 8-5 of -7 endless tube pieces drops and causes institute in order to prevent
The generation for the phenomenon that stating -7 endless tube piece anchor ring out-of-flatness, structure is simple, and using effect is good.
In the present embodiment, in step 2011 and step 2012, the first negative endless tube piece support device and described second negative
The structure of endless tube piece support device is identical, and the first negative endless tube piece support device and the second negative endless tube piece support device are equal
Including be arranged in the negative endless tube piece bottom timber wedge 9-1, two respectively branch be located at the triangles of the negative endless tube piece two sides of the bottom
Support frame 9-2 and respectively branch are located at the first bearing diagonal 9-3 and the second bearing diagonal 9-4 of two sides at the top of the negative endless tube piece, institute
The top that the first bearing diagonal 9-3 is arranged in the first connecting hook 13 is stated, second connecting hook 14 is arranged in the second bearing diagonal 9-4's
Top.
In the present embodiment, by the way that two timber wedge 9-1 are arranged in the negative endless tube piece bottom symmetrical, the negative ring can be avoided
Rigid contact between section of jurisdiction bottom and bracket 6 guarantees that depressed deformation will not occur for the negative endless tube piece bottom, to ensure that
The ovality and flatness of section of jurisdiction.
In the present embodiment, by installing triangular support bracket 9-2 respectively in the negative endless tube piece two sides of the bottom, in the negative ring
Two sides install the first bearing diagonal 9-3 and the second bearing diagonal 9-4 respectively at the top of section of jurisdiction, can reinforce to the negative endless tube piece,
It can guarantee the ovality and flatness of the negative endless tube piece, so that ensure that shield 4 originates posture；
In the present embodiment, in step 201, the backing plate 10 is using the steel plate with a thickness of 10mm.
In the present embodiment, in step 4, when the top between the anterior shield and middle shield for opening shield 4 is hinged, the top of anterior shield
Spacing between portion and the top of middle shield is 80mm~120mm.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (7)
1. shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope, it is characterised in that: the following steps are included:
Step 1: mounting bracket and reaction frame: originating the stage according to the lifting of shield (4) and assemble stable and shield (4)
The aspect of gesture stability two factor, determine that the shield (4) under the conditions of big longitudinal slope originates the gradient of required bracket (6) and is
10 ‰, later, mounting bracket (6) and reaction frame (7), and lift shield (4)；The big longitudinal slope, which refers to, originates setting for well head (1)
It counts longitudinal slope and is greater than 15 ‰；
Step 2: assembled negative endless tube piece: the negative endless tube piece of 8 rings being arranged altogether originating well head (1), wherein -8 endless tube pieces~-2 endless tubes
The mode that piece is all made of semi-ring assembly carries out assembly, and -1 endless tube piece carries out assembly by the way of erecting ring in whole, meanwhile, -8 endless tubes
Staggered joint erection, -8 endless tube pieces, -6 endless tube pieces, -4 endless tube pieces are used in piece~-2 endless tube pieces between arbitrary neighborhood two negative endless tube pieces
Identical with the structure of -2 endless tube pieces, -7 endless tube pieces, -5 endless tube pieces are identical with the structure of -3 endless tube pieces, and detailed process includes following step
It is rapid:
Step 201, assembled -8 endless tube pieces~-3 endless tube pieces: well head (1) successively assembly -8 is being originated by the way of staggered joint erection
Endless tube piece~-3 endless tube pieces, during successively assembled -8 endless tube pieces~-3 endless tube piece, in -8 endless tube pieces~-3 endless tube pieces
The top half of assembled circumferential weld between arbitrary neighborhood two negative endless tube pieces inserts backing plate (10), and in -8 endless tube pieces~-3 rings
Support rod (11) are installed at fissure of displacement position between the negative endless tube piece of two be arbitrarily separated by section of jurisdiction；
Step 202, assembled -2 endless tube pieces: shield (4) tunnels forward a ring, meanwhile, it is backbreak plain concrete using bottom knife of backbreaking
The bottom of stake (3), later, according to the method for any one negative endless tube piece of ring in -8 endless tube pieces~-3 endless tube pieces assembled in step 201
Assembled -2 endless tube pieces, later, the top half of the assembled circumferential weld between -3 endless tube piece and -2 endless tube piece insert pad
Plate (10), and support rod (11) are installed at the fissure of displacement position between -4 endless tube piece and -2 endless tube piece；
Step 203, assembled -1 endless tube piece: a ring is tunneled forward in shield (4) continuation, assembled -1 endless tube in a manner of erecting ring in whole
Piece；
Step 3: assembled 0 endless tube piece: a ring is tunneled forward in shield (4) continuation, the assembled 0 endless tube piece in a manner of erecting ring in whole；
Step 4: the top opened between the anterior shield and middle shield of shield (4) is hinged, shield (4) continues to tunnel by ring, completes shield
(4) semi-ring originates.
2. shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope described in accordance with the claim 1, it is characterised in that: in institute
It states during shield (4) tunnels forward, is all made of small soil bucket and originates well head (1) from described handling is unearthed upwards.
3. shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope according to claim 2, it is characterised in that: step
In two, -8 endless tube pieces, -6 endless tube pieces, -4 endless tube pieces and -2 endless tube pieces are by B1 block section of jurisdiction (8-1), B2 block section of jurisdiction (8-2), B3 block
Section of jurisdiction (8-3) and L1 block section of jurisdiction (8-4) composition, -7 endless tube pieces, -5 endless tube pieces and -3 endless tube pieces are by B1 block section of jurisdiction (8-1), B2
Block section of jurisdiction (8-2), B3 block section of jurisdiction (8-3) and L2 block section of jurisdiction (8-5) composition, -1 endless tube piece is by B1 block section of jurisdiction (8-1), B2 block section of jurisdiction
(8-2), B3 block section of jurisdiction (8-3), L2 block section of jurisdiction (8-5) and K1 block section of jurisdiction (8-6) composition.
4. shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope described in accordance with the claim 3, it is characterised in that: step
In 201, the detailed processes of assembled -8 endless tube pieces~-3 endless tube pieces the following steps are included:
Step 2011, assembled -8 endless tube pieces: -8 endless tube pieces of lifting to the assembled position of design；Later, using the first negative endless tube piece
Support is fixed to -8 endless tube piece in support device, and setting is hooked on institute in the described first negative endless tube piece support device
State the first connecting hook (13) on the L1 block section of jurisdiction (8-4) of -8 endless tube pieces；
Step 2012, assembled -7 endless tube pieces, concrete operation method are as follows: -7 endless tube pieces of lifting to the assembled position of design, and use
Support is fixed to -7 endless tube piece in second negative endless tube piece support device, sets in the described second negative endless tube piece support device
Set the second connecting hook (14) being hooked on the L2 block section of jurisdiction (8-5) of -7 endless tube pieces；Later, in -8 endless tube piece and institute
State top half inserting backing plate (10) of the assembled circumferential weld between -7 endless tube pieces；
Step 2013, assembled -6 endless tube pieces of method according to -8 endless tube pieces assembled in step 2011, later, in -7 endless tube piece
The top half of assembled circumferential weld between -6 endless tube piece inserts backing plate (10), and in -8 endless tube piece and -6 ring
Support rod (11) are installed at fissure of displacement position between section of jurisdiction；
Step 2014, assembled -5 endless tube pieces of method according to -7 endless tube pieces assembled in step 2012, later, in -6 endless tube piece
The top half of assembled circumferential weld between -5 endless tube piece inserts backing plate (10), and in -7 endless tube piece and -5 ring
Support rod (11) are installed at fissure of displacement position between section of jurisdiction；
Step 2015, assembled -4 endless tube pieces of method according to -8 endless tube pieces assembled in step 2011, later, in -5 endless tube piece
The top half of assembled circumferential weld between -4 endless tube piece inserts backing plate (10), and in -6 endless tube piece and -4 ring
Support rod (11) are installed at fissure of displacement position between section of jurisdiction；
Step 2016, assembled -3 endless tube pieces of method according to -7 endless tube pieces assembled in step 2012, later, in -4 endless tube piece
The top half of assembled circumferential weld between -3 endless tube piece inserts backing plate (10), and in -5 endless tube piece and -3 ring
Support rod (11) are installed at fissure of displacement position between section of jurisdiction.
5. shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope according to claim 4, it is characterised in that: step
2011 and step 2012 in, the structure phase of the first negative endless tube piece support device and the second negative endless tube piece support device
Together, the described first negative endless tube piece support device and the second negative endless tube piece support device include being arranged in the negative endless tube piece
The timber wedge (9-1) of bottom, two respectively branch be located at the negative endless tube piece two sides of the bottom triangular support bracket (9-2) and prop up respectively
It is located at the first bearing diagonal (9-3) and the second bearing diagonal (9-4) of two sides at the top of the negative endless tube piece, first connecting hook (13)
It is arranged at the top of the first bearing diagonal (9-3), second connecting hook (14) is arranged at the top of the second bearing diagonal (9-4).
6. shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope according to claim 4, it is characterised in that: step
In 201, the backing plate (10) is using the steel plate with a thickness of 10mm.
7. shield semi-ring originates construction method under the conditions of a kind of big longitudinal slope described in accordance with the claim 1, it is characterised in that: step
In four, when open shield (4) anterior shield and middle shield between top it is hinged when, between the top of anterior shield and the top of middle shield between
Away from for 80mm~120mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579242.5A CN109356599B (en) | 2018-12-24 | 2018-12-24 | Shield semi-ring starting construction method under large longitudinal slope condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579242.5A CN109356599B (en) | 2018-12-24 | 2018-12-24 | Shield semi-ring starting construction method under large longitudinal slope condition |
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| CN109356599A true CN109356599A (en) | 2019-02-19 |
| CN109356599B CN109356599B (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN112324444A (en) * | 2020-11-27 | 2021-02-05 | 中建八局轨道交通建设有限公司 | Shield large-gradient starting construction method |
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|---|---|
| CN109356599B (en) | 2020-07-17 |
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