CN107725067B - The general ring pipe sheet assembling point of shield determines method - Google Patents
The general ring pipe sheet assembling point of shield determines method Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- 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
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Abstract
The invention discloses a kind of general ring pipe sheet assembling points of subway shield tunnel construction to determine method, carries out Shield Construction Method Used to institute's construction tunnel from the front to the back along tunnel central axis using shield machine, Shield Construction Method Used carries out shield segment assembling construction after completing a ring；Before any ring shield segment assembling construction, first the pipe sheet assembling point when front ring shield duct piece is determined, process is as follows: one, assembled point may be selected and determine；Two, it selects influence index and its weight coefficient to determine: the three selection influence indexs and its weight coefficient that influence pipe sheet assembling point position selection is determined respectively；Three, the selective evaluation of assembled point may be selected: being evaluated respectively according to selectivity of the Exchanger Efficiency with Weight Coefficient Method to each optional assembled point, and determine the pipe sheet assembling point for working as front ring shield duct piece.The method of the present invention step is simple, design is reasonable and realizes that convenient, using effect is good, can assembled point that is easy, fast and accurately determining general endless tube piece.
Description
Present patent application is 2016 applyings date 19 days 2 months, application number 201610093860.3, invention and created name
For the divisional application of the application for a patent for invention of " a kind of the general ring pipe sheet assembling point of subway shield tunnel construction determine method ".
Technical field
The invention belongs to Shield Construction Technique fields, more particularly, to a kind of general ring pipe sheet assembling point of subway shield tunnel construction
Position determines method.
Background technique
Shield duct piece is the permanent lining, secondary lining structure of shield tunnel, and shield duct piece quality is directly related to the whole matter in tunnel
Amount and safety, influence the waterproof performance and endurance quality in tunnel.One ring shield duct piece claims a section of jurisdiction ring.Universal segment refers to institute
Some section of jurisdiction loop types only have one kind, can both be used in straightway, it is also possible in curved section.General ring refers to universal segment lining cutting
Ring, also referred to as universal segment ring or universal wedge-shaped segment ring.Pipe sheet assembling uses staggered joint erection, and an endless tube piece is generally by several pieces of A
Type section of jurisdiction (i.e. calibrated bolck), two pieces of Type B sections of jurisdiction (i.e. adjacent block) and one piece of K-type section of jurisdiction (bind block, abbreviation K block) it is assembled and
At.Pipe sheet assembling point refers to the position where the block that binds in assembly (i.e. K block), the position in the middle part of the block that specifically binds.?
The country, the shield duct piece indexed as 22.5 ° of indexing and 36 ° of indexing have general ring design.Based on the general ring in Tunnel Engineering section of jurisdiction
Assembly requires, and the block that binds possibly is present at all indexing positions, the assembled point bit quantity for the block that binds in the shield duct piece of 36 ° of indexing
It is 10, the assembled point bit quantity for the block that binds in the shield duct piece of 22.5 ° of indexing is 16.As shown in Figure 1,16 assembled points
(i.e. 16 assembled points to be selected) along being uniformly distributed clockwise, the block that binds in shield duct piece possibly is present at 16 assembled points to be selected
Any of position assembled point to be selected, the angle γ between two neighboring assembled point to be selected is 22.5 °.Wherein, the top
Assembled point is 16 points, and the assembled point of bottom is 8 points.Due to being staggered joint erection, each endless tube piece has 5 assembled points can
Selective, such as when the assembled point of upper endless tube piece is 16, it is 2 points, 5 that next endless tube piece, which can provide the assembled point selected,
The assembled point of point, 8 points, 11 points and 14 points this five.At present in subway shield tunnel construction, general endless tube chip technology is selected in section of jurisdiction
Type, typesetting, correction etc. achieve certain achievement, but there are also a certain distance for the quantitative control apart from fining.It is practical
When carrying out shield-tunneling construction, the assembled point of general endless tube piece cannot easy, be fast and accurately determined.
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 metro shield
General ring pipe sheet assembling point of constructing determines method, and method and step is simple, design is reasonable and realizes that convenient, using effect is good,
It can assembled point that is easy, fast and accurately determining general endless tube piece.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of general endless tube piece of subway shield tunnel construction
Assembled point determines method, it is characterised in that: is carried out from the front to the back to institute's construction tunnel using shield machine along tunnel central axis
Shield Construction Method Used, Shield Construction Method Used carry out shield segment assembling construction after completing a ring；
Before any ring shield segment assembling construction, first the pipe sheet assembling point when front ring shield duct piece is determined,
Process is as follows:
It is determined Step 1: assembly point may be selected: according to shield duct piece staggered joint erection method, and according to upper ring shield pipe
The pipe sheet assembling point of piece selects 5 optional assembled points when front ring shield duct piece from 16 assembled points to be selected；
16 the assembled point to be selected is along the circumferential direction uniformly distributed and it is respectively 1 from front to back along clockwise direction
Point, 2 points ..., 16 points；
5 optional assembled points be denoted as respectively a point, b point, c point, d point and e point and its along clockwise direction by preceding
To rear arrangement；Wherein, a, b, c, d and e are positive integer, 1≤a≤16,1≤b≤16,1≤c≤16,1≤d≤16, and 1≤e≤
16；
Step 2: selection influence index and its weight coefficient determine: according to the tunnel segment locating for the front ring shield duct piece
Shield Construction Method Used parameter when Shield Construction Method Used is carried out, to three selection influence indexs for influencing pipe sheet assembling point position selection
It is determined respectively with the weight coefficient of three selection influence indexs；
Three selection influence indexs are respectively attitude of shield machine, shield machine jack progressive error and gap of the shield tail；
Step 3: the selective evaluation of assembly point may be selected: according to three selection shadows identified in step 2
Snap mark and its weight coefficient, and according to Exchanger Efficiency with Weight Coefficient Method to the selectivity point of 5 in the step 1 optional assembled points
Do not evaluated, and using the selectivity evaluated best one described optional assembled point as working as front ring shield duct piece
Pipe sheet assembling point.
A kind of above-mentioned general ring pipe sheet assembling point of subway shield tunnel construction determines method, it is characterized in that: in institute's construction tunnel
It is initial ring shield duct piece positioned at shield duct piece described in a most ring of rear side, it is described when front ring shield duct piece is positioned at described initial
Shield duct piece described in a ring on front side of ring shield duct piece；
After the selective evaluation for completing optional assembled point in step 3, also need to when front ring shield segment assembling is constructed
Shield machine jack travel information and gap of the shield tail information after the completion is respectively calculated；
When front ring shield segment assembling construction after the completion of shield machine jack travel information include YGS, YGX, YGZ and
YGY；Wherein, YGS is the stroke of the shield machine top jack after the completion of the construction of front ring shield segment assembling, and YGX is to work as front ring
The stroke of shield machine lower part jack after the completion of shield segment assembling construction, YGZ are to construct to complete when front ring shield segment assembling
The stroke of shield machine left side jack afterwards, YGY are the shield machine right side jack after the completion of the construction of front ring shield segment assembling
Stroke；
Gap of the shield tail information after the completion of the construction of front ring shield segment assembling includes DWS, DWX, DWZ and DWY；Wherein,
DWS is the top gap of the shield tail after the completion of the construction of front ring shield segment assembling, and DWX is when front ring shield segment assembling has been constructed
Lower part gap of the shield tail after, DWZ are the left side gap of the shield tail after the completion of the construction of front ring shield segment assembling, and DWY is current
Right side gap of the shield tail after the completion of the construction of ring shield segment assembling.
A kind of above-mentioned general ring pipe sheet assembling point of subway shield tunnel construction determines method, it is characterized in that: three in step 2
The weight coefficient of attitude of shield machine described in the selection influence index is denoted as λZ, the weight coefficient of shield machine jack progressive error
It is denoted as λQ, the weight coefficient of gap of the shield tail is denoted as λD；Wherein, 0 < λZ1,0 < λ of <Q1,0 < λ of <D< 1, λZ+λQ+λD=1.
A kind of above-mentioned general ring pipe sheet assembling point of subway shield tunnel construction determines method, it is characterized in that: three in step 2
The maximum weight coefficient of numerical value is denoted as λ in the weight coefficient of the selection influence indexM, λM=0.4~0.6；Three selections
The smallest weight coefficient of numerical value is denoted as λ in the weight coefficient of influence indexm, λm=0.1~0.3.
A kind of above-mentioned general ring pipe sheet assembling point of subway shield tunnel construction determines method, it is characterized in that: to three in step 2
The weight coefficient of a selection influence index is when being determined, first according to the tunnel segment progress locating for the front ring shield duct piece
Shield Construction Method Used parameter when Shield Construction Method Used, and preset setup parameter is combined, three selections are influenced
The influence degree of index is determined respectively；Weight coefficient=λ of the maximum selection influence index of influence degreeM, influence degree
Weight coefficient=λ of the smallest selection influence indexm；
The setup parameter includes attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value
d；Wherein, s > 0, q > 0 and d > 0.
A kind of above-mentioned general ring pipe sheet assembling point of subway shield tunnel construction determines method, it is characterized in that: described in step 2
Shield Construction Method Used parameter includes attitude of shield machine parameter, shield machine jack progressive error parameter and gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield
Horizontal departure amount of the shield relative to tunnel central axis in shield machine when structure tunneling construction, shield machine when CZ is Shield Construction Method Used
Vertical missing amount of the middle shield relative to tunnel central axis；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack stroke
Poor QSX；
The gap of the shield tail parameter includes top gap of the shield tail DS, lower part gap of the shield tail DX, left side gap of the shield tail DZ and the right side
Side gap of the shield tail DY；
When being determined to the influence degree of three selection influence indexs, process is as follows:
Step 201, the judgement of gap of the shield tail parameter: by gap of the shield tail parameter middle and upper part gap of the shield tail DS, lower part shield tail
Clearance D X, left side gap of the shield tail DZ and right side gap of the shield tail DY respectively with gap of the shield tail permissible value d carry out difference comparsion: when DS,
When DX, DZ and DY are not less than d, 202 are entered step；Otherwise, it is judged as between shield tail described in three selection influence indexs
The influence degree of gap is maximum, and the influence degree of the attitude of shield machine is minimum, and completes the shadow of three selection influence indexs
Ring degree determination process；
Step 202, the judgement of shield machine jack progressive error parameter: by left and right sides jack progressive error QZY and upper and lower sides thousand
Jin top row path difference QSX carries out difference comparsion with jack progressive error threshold value q respectively: when QZY and QSX is no more than q, into step
Rapid 203；Otherwise, it is judged as that the influence degree of shield machine jack progressive error described in three selection influence indexs is maximum,
The influence degree of the gap of the shield tail is minimum, and completes the influence degree determination process of three selection influence indexs；
Step 203, attitude of shield machine parameter judgement: by shield machine horizontal attitude SP and shield machine perpendicular attitude CZ respectively with
Attitude of shield machine deviation threshold s carries out difference comparsion: as SP > s or CZ > s, being judged as in three selection influence indexs
The influence degree of the attitude of shield machine is maximum, and the influence degree of the shield machine jack progressive error is minimum, and completes three
The influence degree determination process of the selection influence index；Otherwise, it is judged as shield described in three selection influence indexs
The influence degree of machine jack progressive error is maximum, and the influence degree of the gap of the shield tail is minimum, and completes three selection shadows
Snap target influence degree determination process.
A kind of above-mentioned general ring pipe sheet assembling point of subway shield tunnel construction determines method, it is characterized in that: the s=10mm
~100mm, q=30mm~100mm, d=5mm~55mm.
A kind of above-mentioned general ring pipe sheet assembling point of subway shield tunnel construction determines method, it is characterized in that: three in step 2
The weight coefficient of attitude of shield machine described in the selection influence index is denoted as λZ, the weight coefficient of shield machine jack progressive error
It is denoted as λQ, the weight coefficient of gap of the shield tail is denoted as λD；Wherein, 0 < λZ1,0 < λ of <Q1,0 < λ of <D< 1, λZ+λQ+λD=1；
Shield Construction Method Used parameter described in step 2 includes attitude of shield machine parameter, shield machine jack progressive error parameter
With gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield
Horizontal departure amount of the shield relative to tunnel central axis in shield machine when structure tunneling construction, shield machine when CZ is Shield Construction Method Used
Vertical missing amount of the middle shield relative to tunnel central axis；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack stroke
Poor QSX；Wherein, QZY=QZ-QY, QZ are shield when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of jack on the left of machine, QY are that shield machine is right when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of side jack；QSX=QS-QX, QS are when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of shield machine top jack, QX are shield when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of machine lower part jack；
The gap of the shield tail parameter includes top gap of the shield tail DS, lower part gap of the shield tail DX, left side gap of the shield tail DZ and the right side
Side gap of the shield tail DY；
It, need to be to 16 institutes when being determined in step 2 to three selection influence indexs for influencing pipe sheet assembling point position selection
Three selection influence indexs for stating each assembled point to be selected in assembled point to be selected are determined respectively；
Attitude of shield machine, shield machine thousand described in three selection influence indexs of n point in 16 assembled points to be selected
Jin top row path difference and gap of the shield tail, are denoted as Z (n), Q (n) and D (n) respectively；Wherein, n be positive integer and n=1,2 ..., 16；
When being determined to Z (n), Q (n) and D (n), shield is carried out according to the tunnel segment locating for the front ring shield duct piece
Shield Construction Method Used parameter when tunneling construction, and be determined in conjunction with preset setup parameter；The setup parameter packet
Include attitude of shield machine benchmark, attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value d；Wherein,
S > 0, q > 0 and d > 0；
The attitude of shield machine benchmark includes shield machine horizontal attitude benchmark Sj and shield machine perpendicular attitude benchmark Cj, wherein
Sj is that shield is opposite in preset shield machine to working as before tunnel segment locating for front ring shield duct piece carries out Shield Construction Method Used
In the horizontal departure amount of tunnel central axis, Cj be the tunnel segment locating for the front ring shield duct piece is carried out Shield Construction Method Used it
Vertical missing amount of the shield relative to tunnel central axis in preceding preset shield machine；
When being determined to Z (n), according to formula Z (n)=Z1(n)+Z2(n) (1) is determined；
In formula (1), Z1(n) according to shield machine horizontal attitude SP, shield machine horizontal attitude benchmark Sj and attitude of shield machine
Deviation threshold s is determined:
As SP-Sj <-s,
As-s≤SP-Sj < 0,
As 0≤SP-Sj < s,
As SP-Sj >=s,
In formula (1), Z2(n) according to shield machine perpendicular attitude CZ, shield machine perpendicular attitude benchmark Cj and attitude of shield machine
Deviation threshold s is determined:
As CZ-Cj≤- s,
As-s < CZ-Cj≤0,
As 0 < CZ-Cj≤s,
As CZ-Cj > s,
When being determined to Q (n), according to formula Q (n)=Q1(n)+Q2(n) (2) are determined；
In formula (2), Q1(n) it is determined according to left and right sides jack progressive error QZY and jack progressive error threshold value q:
As QZY <-q,
As-q≤QZY < 0,
As 0≤QZY < q,
As QZY >=q,
In formula (2), Q2(n) it is determined according to upper and lower sides jack progressive error QSX and jack progressive error threshold value q:
As QSX≤- q,
As-q < QSX≤0,
As 0 < QSX≤q,
As QSX > q,
When being determined to D (n), according to formula(3) it is determined；
In formula (3), D1(n) it is determined according to top gap of the shield tail DS and gap of the shield tail permissible value d:
As DS < d,
As DS >=d, D1(n)=0；
In formula (3), D2(n) it is determined according to lower part gap of the shield tail DX and gap of the shield tail permissible value d:
As DX < d,
As DX >=d, D2(n)=0；
In formula (3), D3(n) it is determined according to left side gap of the shield tail DZ and gap of the shield tail permissible value d:
As DZ < d,
As DZ >=d, D3(n)=0；
In formula (3), D4(n) it is determined according to right side gap of the shield tail DY and gap of the shield tail permissible value d:
As DY < d,
As DY >=d, D4(n)=0.
A kind of above-mentioned general ring pipe sheet assembling point of subway shield tunnel construction determines method, it is characterized in that: carrying out in step 3
When the selective evaluation of assembly point may be selected, process is as follows:
Assembled point preference degree calculating may be selected in step 301: according to 16 spellings to be selected identified in step 2
Three selection influence indexs of each assembled point to be selected in position are decorateeed, and in conjunction with the weight system of three selection influence indexs
Number is respectively calculated the preference degree of 5 in the step 1 optional assembled points；
Shield described in three selection influence indexs of m point in 5 optional assembled points determined by step 1
Structure machine posture, shield machine jack progressive error and gap of the shield tail, are denoted as Z (m), Q (m) and D (m) respectively；Wherein, m is positive integer
And m=a, b, c, d or e；
When calculating the preference degree of m point in 5 optional assembled points, according to formula H (m)=λD·D
(m)+λQ·Q(m)+λZZ (m) (5) is calculated；
In this step, the preference degree of calculated a point, b point, c point, d point and e point is denoted as H (a), H (b), H respectively
(c), H (d) and H (e)；
Step 302, optional assembled point preference degree compare: to 5 optional spellings calculated in step 301
Preference degree H (a), H (b), H (c), H (d) and the H (e) for decorateeing position are compared, and from 5 optional assembled points
Find out the maximum optional assembled point of preference degree；
The maximum optional assembled point of the preference degree found out is denoted as N point, and N point is the best optional spelling of selectivity
It decorates position and it is the pipe sheet assembling point when front ring shield duct piece；Wherein, N is positive integer and 1≤N≤16.
A kind of above-mentioned general ring pipe sheet assembling point of subway shield tunnel construction determines method, it is characterized in that: described in step 2
Shield Construction Method Used parameter includes attitude of shield machine parameter, shield machine jack progressive error parameter and gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield
Horizontal departure amount of the shield relative to tunnel central axis in shield machine when structure tunneling construction, shield machine when CZ is Shield Construction Method Used
Vertical missing amount of the middle shield relative to tunnel central axis；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack stroke
Poor QSX；Wherein, QZY=QZ-QY, QZ are shield when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of jack on the left of machine, QY are that shield machine is right when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of side jack；QSX=QS-QX, QS are when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of shield machine top jack, QX are shield when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of machine lower part jack；
The gap of the shield tail parameter includes top gap of the shield tail DS, lower part gap of the shield tail DX, left side gap of the shield tail DZ and the right side
Side gap of the shield tail DY；
After the selective evaluation for completing optional assembled point in step 3, work as front ring shield according to what is obtained in step 3
The pipe sheet assembling point of section of jurisdiction, to described when front ring shield duct piece carries out assembling construction.
Compared with the prior art, the present invention has the following advantages:
1, method and step is simple and input cost is low, and it is convenient to realize.
2, method design rationally, can be extrapolated according to the pipe sheet assembling point of upper ring shield duct piece when front ring shield duct piece
5 assembled points may be selected, consider further that three selection influence indexs, calculate 5 preference degrees that assembly point may be selected,
And using the maximum optional assembled point of preference degree as the assembled point for working as front ring shield duct piece.
3, three selection influence index selections rationally, comprehensively, accurately consider the factor for influencing pipe sheet assembling point position selection,
Shield duct piece in practice of construction can be effectively reduced to improve because of the segment damage and percolating water phenomenon of the improper appearance of pipe sheet assembling point
Form tunnel quality.
4, the weight modulus method of three selection influence indexs is simple, reasonable and realization is convenient, using effect is good, energy
Influence index is selected to carry out easy, intuitive and accurate expression to the influence degree of pipe sheet assembling point position selection to three.
5, the calculation method of assembled point preference degree is simple, design is reasonable and calculated result is reliable, and consideration meets scene
Construction and three selection influence indexs for influencing pipe sheet assembling point position selection, the influence mode of influence index is selected according to three,
And the influence degree of each selection influence index is embodied by weight, and optimal pipe sheet assembling is judged by weighted sum
Point.
6, consider that parameter relevant to general ring segment selection (i.e. dig by shield during practical Shield Construction Method Used comprehensively
Into construction parameter), in combination with setup parameter, and by weight analysis, pass through the quantitative section of jurisdiction for calculating current ring shield duct piece
Assembled point provides for pipe sheet assembling and meets the actual assembled point guidance in scene, practicability and strong operability, realizes fine
The quantitative control changed.
7, the preference degree that each optional assembled point can easy, be quickly calculated by data processing equipment, is taken
Between very short and calculation amount it is small, realize easy, need to only input corresponding Shield Construction Method Used parameter, setup parameter and weight coefficient
?.
8, attitude of shield machine benchmark is determined according to the datum axis of reference in shield tunneling process, to pipe sheet assembling
When point is determined, identified attitude of shield machine benchmark is considered, so as to which the axis of construction molding tunnel duct piece is effectively ensured
Line position, realizes Precise control, strong applicability, and identified pipe sheet assembling point more meets live practical.
9, it after the selective evaluation for completing optional assembled point, calculates after the completion of the construction of front ring shield segment assembling
Shield machine jack travel information and gap of the shield tail information, instruct site operation, realize general endless tube piece point position selection process
Informationization, and realize the quantitative control of jack stroke and gap of the shield tail, realize the Precise control of segment selection.
10, using effect is good and practical value is high, adapts in Practical Project in Different Strata because duct piece float upward amount is different
And the different shield driving axis taken, it is bonded scene reality, making segment selection result, (specifically pipe sheet assembling point determines
With pipe sheet assembling) it is consistent with shield driving thinking, it is ensured that adaptability.Also, according to live reality, and consider three selection shadows
Snap target influence degree, and by adjusting weight coefficient, select influence index to influence the pipe for working as front ring shield duct piece on three
The significance level of piece assembly point is adjusted, be more than or the selection influence index of approach construction limit value (i.e. setup parameter) (
Referred to as influence factor) weight coefficient rise, realize easy, more meet live practical.
In conclusion the method for the present invention step is simple, design is reasonable and realizes that convenient, using effect is good, it can be easy, quick
And accurately determine the assembled point of general endless tube piece.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the layout position illustration of general endless tube piece 16 assembled points.
Fig. 2 is method flow block diagram of the invention.
Specific embodiment
A kind of general ring pipe sheet assembling point of subway shield tunnel construction as shown in Figure 2 determines method, using shield machine along tunnel
Road central axis carries out Shield Construction Method Used to institute's construction tunnel from the front to the back, and Shield Construction Method Used carries out shield after completing a ring
Pipe sheet assembling construction；
Before any ring shield segment assembling construction, first the pipe sheet assembling point when front ring shield duct piece is determined,
Process is as follows:
It is determined Step 1: assembly point may be selected: according to shield duct piece staggered joint erection method, and according to upper ring shield pipe
The pipe sheet assembling point of piece selects 5 optional assembled points when front ring shield duct piece from 16 assembled points to be selected；
16 the assembled point to be selected is along the circumferential direction uniformly distributed and it is respectively 1 from front to back along clockwise direction
Point, 2 points ..., 16 points, be detailed in Fig. 1；
5 optional assembled points be denoted as respectively a point, b point, c point, d point and e point and its along clockwise direction by preceding
To rear arrangement；Wherein, a, b, c, d and e are positive integer, 1≤a≤16,1≤b≤16,1≤c≤16,1≤d≤16, and 1≤e≤
16；
Step 2: selection influence index and its weight coefficient determine: according to the tunnel segment locating for the front ring shield duct piece
Shield Construction Method Used parameter when Shield Construction Method Used is carried out, to three selection influence indexs for influencing pipe sheet assembling point position selection
It is determined respectively with the weight coefficient of three selection influence indexs；
Three selection influence indexs are respectively attitude of shield machine, shield machine jack progressive error and gap of the shield tail；
Step 3: the selective evaluation of assembly point may be selected: according to three selection shadows identified in step 2
Snap mark and its weight coefficient, and according to Exchanger Efficiency with Weight Coefficient Method to the selectivity point of 5 in the step 1 optional assembled points
Do not evaluated, and using the selectivity evaluated best one described optional assembled point as working as front ring shield duct piece
Pipe sheet assembling point.
Also, the tunnel central axis is the design centre axis of institute's construction tunnel.
As shown in Figure 1, the angle γ in 16 assembled points to be selected between two neighboring assembled point to be selected is
22.5°.In 16 assembled points to be selected, 16 points are located at the top, and 8 points are located at bottom and at 16 points with 8 points positioned at same
On vertical line.
Being located at shield duct piece described in a most ring of rear side in the present embodiment, in institute's construction tunnel is initial ring shield duct piece,
The front ring shield duct piece of working as is shield duct piece described in the ring on front side of the initial ring shield duct piece.
When practice of construction, when carrying out assembling construction to the initial ring shield duct piece, without to its pipe sheet assembling point into
Row determines.
When carrying out assembled point may be selected in the present embodiment, in step 1 determining, according to shield duct piece staggered joint erection method
It is determined, this method is conventional shield segment assembling method well known to those skilled in the art, realizes easy, operability
By force.
In step 1 upper ring shield duct piece be when the adjacent upper ring shield duct piece of front ring shield duct piece and its be located at work as
On rear side of front ring shield duct piece.Herein, the pipe sheet assembling point of upper ring shield duct piece is denoted as NSPoint, wherein NSFor positive integer, and 1
≤NS≤16。
In the present embodiment, when being determined to 5 optional assembled points, process is as follows:
Step 1: a point determines: according to the pipe sheet assembling point N of upper ring shield duct pieceSPoint is determined a point: working as NS
When+2 > 16, a=NS+2-16；Otherwise, a=NS+2；
Step 2: b point determines: according to a point identified in step 1, b point is determined: as a+3 > 16, b=a
+3-16；Otherwise, b=a+3；
Step 3: c point determines: according to b point identified in step 2, c point is determined: as b+3 > 16, c=b
+3-16；Otherwise, c=b+3；
Step 4: d point determines: according to c point identified in step 3, d point is determined: as c+3 > 16, d=c
+3-16；Otherwise, d=c+3；
Step 5: e point determines: according to d point identified in step 4, e point is determined: as d+3 > 16, e=d
+3-16；Otherwise, e=d+3.
In the present embodiment, the weight coefficient of attitude of shield machine described in three selection influence indexs is denoted as in step 2
λZ, the weight coefficient of shield machine jack progressive error is denoted as λQ, the weight coefficient of gap of the shield tail is denoted as λD；Wherein, 0 < λZ< 1,0
< λQ1,0 < λ of <D< 1, λZ+λQ+λD=1.
Also, the maximum weight coefficient of numerical value is denoted as in the weight coefficient of three selection influence indexs in step 2
λM, λM=0.4~0.6；The smallest weight coefficient of numerical value is denoted as λ in the weight coefficient of three selection influence indexsm, λm=
0.1~0.3.
In the present embodiment, the λM=0.45~0.55, the λm=0.1~0.15.
In this way, the weight coefficient determination process of three selection influence indexs can be significantly simplified, it only need to be to described in three
The influence degree that selection influence index influences pipe sheet assembling point position selection is from top to bottom ranked up, just can it is easy, immediately arrive at
The weight coefficient of three selection influence indexs.Wherein, the selection influence index influences the shadow of pipe sheet assembling point position selection
The degree of sound is bigger, and the weight coefficient of the selection influence index is bigger.Also, the weight of the maximum selection influence index of influence degree
Coefficient=λM, weight coefficient=λ of the smallest selection influence index of influence degreem。
In the present embodiment, when being determined in step 2 to the weight coefficient of three selection influence indexs, first basis
Shield Construction Method Used parameter when Shield Construction Method Used is carried out to the tunnel segment locating for the front ring shield duct piece, and is combined and set in advance
Fixed setup parameter is determined the influence degree of three selection influence indexs respectively；The maximum selection of influence degree
Weight coefficient=λ of influence indexM, weight coefficient=λ of the smallest selection influence index of influence degreem。
The setup parameter includes attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value
d；Wherein, s > 0, q > 0 and d > 0.
Thus, the determination method of the weight coefficient of three selection influence indexs is simple and realizes conveniently, and result
Accurately, high reliablity.
When practice of construction, the s=10mm~100mm, q=30mm~100mm, d=5mm~55mm.
Preferably, the s=35mm~45mm, q=55mm~65mm, d=10mm~30mm.
In the present embodiment, the s=40mm, q=60mm, d=15mm.It, can be according to specific need during practice of construction
It wants, the value size of s, q and d is adjusted accordingly.Wherein ,-s=-40mm ,-q=-60mm.
When setting to gap of the shield tail permissible value d, require gap of the shield tail not less than 15mm, harsh conditions under normal circumstances
Under require gap of the shield tail not less than 10mm, make scope of activities 10mm~30mm of gap of the shield tail, gap of the shield tail standard value is 30mm.
When practice of construction, when carrying out Shield Construction Method Used to institute's construction tunnel using the shield machine, after the shield machine
There are four jack for portion's dress, and four jack are hydraulic jack, and four jack are laid in same vertical plane
Above and it is along the circumferential direction uniformly distributed.Four jack are respectively top, lower part, the left side for being located at the shield machine rear portion
The top jack on side and right side, lower part jack, left side jack and right side jack.Gap of the shield tail refers to shield machine shield tail
Gap between shield duct piece.
In the present embodiment, Shield Construction Method Used parameter described in step 2 includes that attitude of shield machine parameter, shield machine are very heavy
Top row path difference parameter and gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield
Horizontal departure amount of the shield relative to tunnel central axis in shield machine when structure tunneling construction, shield machine when CZ is Shield Construction Method Used
Vertical missing amount of the middle shield relative to tunnel central axis；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack stroke
Poor QSX；Wherein, QZY=QZ-QY, QZ are shield when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of jack on the left of machine, QY are that shield machine is right when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of side jack；QSX=QS-QX, QS are when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of shield machine top jack, QX are shield when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of machine lower part jack；
The gap of the shield tail parameter includes top gap of the shield tail DS, lower part gap of the shield tail DX, left side gap of the shield tail DZ and the right side
Side gap of the shield tail DY.
Wherein, the stroke of shield machine left and right sides jack when left and right sides jack progressive error QZY is Shield Construction Method Used
Difference, the progressive error of the upper and lower two sides jack of shield machine when upper and lower sides jack progressive error QSX is Shield Construction Method Used.SP is shield
Shield (in the middle part of specifically middle shield, i.e., the geometric center point of middle shield) is inclined with the level of tunnel central axis in shield machine when tunneling construction
Residual quantity, shield in shield machine when CZ is Shield Construction Method Used (in specifically in the middle part of shield, i.e., in shield geometric center point) relative to tunnel
The geometric center point of the vertical missing amount of road central axis, middle shield is located on the central axis of shield machine.
When being determined to the influence degree of three selection influence indexs, process is as follows:
Step 201, the judgement of gap of the shield tail parameter: by gap of the shield tail parameter middle and upper part gap of the shield tail DS, lower part shield tail
Clearance D X, left side gap of the shield tail DZ and right side gap of the shield tail DY respectively with gap of the shield tail permissible value d carry out difference comparsion: when DS,
When DX, DZ and DY are not less than d, 202 are entered step；Otherwise, it is judged as between shield tail described in three selection influence indexs
The influence degree of gap is maximum, and the influence degree of the attitude of shield machine is minimum, and completes the shadow of three selection influence indexs
Ring degree determination process；
Step 202, the judgement of shield machine jack progressive error parameter: by left and right sides jack progressive error QZY and upper and lower sides thousand
Jin top row path difference QSX carries out difference comparsion with jack progressive error threshold value q respectively: when QZY and QSX is no more than q, into step
Rapid 203；Otherwise, it is judged as that the influence degree of shield machine jack progressive error described in three selection influence indexs is maximum,
The influence degree of the gap of the shield tail is minimum, and completes the influence degree determination process of three selection influence indexs；
Step 203, attitude of shield machine parameter judgement: by shield machine horizontal attitude SP and shield machine perpendicular attitude CZ respectively with
Attitude of shield machine deviation threshold s carries out difference comparsion: as SP > s or CZ > s, being judged as in three selection influence indexs
The influence degree of the attitude of shield machine is maximum, and the influence degree of the shield machine jack progressive error is minimum, and completes three
The influence degree determination process of the selection influence index；Otherwise, it is judged as shield described in three selection influence indexs
The influence degree of machine jack progressive error is maximum, and the influence degree of the gap of the shield tail is minimum, and completes three selection shadows
Snap target influence degree determination process.
In this way, easy, quickly can refer on three selection influences according to method described in step 201 to step 203
Target influence degree is determined, and it is convenient to realize, and the influence degree result of identified three selection influence indexs can
It leans on, can operate strong.
In the present embodiment, three selection influence indexs for influencing pipe sheet assembling point position selection are determined in step 2
When, three selection influence indexs of each assembled point to be selected in 16 assembled points to be selected need to be determined respectively；
Attitude of shield machine, shield machine thousand described in three selection influence indexs of n point in 16 assembled points to be selected
Jin top row path difference and gap of the shield tail, are denoted as Z (n), Q (n) and D (n) respectively；Wherein, n be positive integer and n=1,2 ..., 16；
When being determined to Z (n), Q (n) and D (n), shield is carried out according to the tunnel segment locating for the front ring shield duct piece
Shield Construction Method Used parameter when tunneling construction, and be determined in conjunction with preset setup parameter；The setup parameter packet
Include attitude of shield machine benchmark, attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value d；
The attitude of shield machine benchmark includes shield machine horizontal attitude benchmark Sj and shield machine perpendicular attitude benchmark Cj, wherein
Sj is that shield is opposite in preset shield machine to working as before tunnel segment locating for front ring shield duct piece carries out Shield Construction Method Used
In the horizontal departure amount of tunnel central axis, Cj be the tunnel segment locating for the front ring shield duct piece is carried out Shield Construction Method Used it
Vertical missing amount of the shield relative to tunnel central axis in preceding preset shield machine；
When being determined to Z (n), according to formula Z (n)=Z1(n)+Z2(n) (1) is determined；
In formula (1), Z1(n) according to shield machine horizontal attitude SP, shield machine horizontal attitude benchmark Sj and attitude of shield machine
Deviation threshold s is determined:
As SP-Sj <-s,
As-s≤SP-Sj < 0,
As 0≤SP-Sj < s,
As SP-Sj >=s,
In formula (1), Z2(n) according to shield machine perpendicular attitude CZ, shield machine perpendicular attitude benchmark Cj and attitude of shield machine
Deviation threshold s is determined:
As CZ-Cj≤- s,
As-s < CZ-Cj≤0,
As 0 < CZ-Cj≤s,
As CZ-Cj > s,
When being determined to Q (n), according to formula Q (n)=Q1(n)+Q2(n) (2) are determined；
In formula (2), Q1(n) it is determined according to left and right sides jack progressive error QZY and jack progressive error threshold value q:
As QZY <-q,
As-q≤QZY < 0,
As 0≤QZY < q,
As QZY >=q,
In formula (2), Q2(n) it is determined according to upper and lower sides jack progressive error QSX and jack progressive error threshold value q:
As QSX≤- q,
As-q < QSX≤0,
As 0 < QSX≤q,
As QSX > q,
When being determined to D (n), according to formula(3) it is determined；
In formula (3), D1(n) it is determined according to top gap of the shield tail DS and gap of the shield tail permissible value d:
As DS < d,
As DS >=d, D1(n)=0；
In formula (3), D2(n) it is determined according to lower part gap of the shield tail DX and gap of the shield tail permissible value d:
As DX < d,
As DX >=d, D2(n)=0；
In formula (3), D3(n) it is determined according to left side gap of the shield tail DZ and gap of the shield tail permissible value d:
As DZ < d,
As DZ >=d, D3(n)=0；
In formula (3), D4(n) it is determined according to right side gap of the shield tail DY and gap of the shield tail permissible value d:
As DY < d,
As DY >=d, D4(n)=0.
When carrying out may be selected the selective evaluation of assembled point in the present embodiment, in step 3, process is as follows:
Assembled point preference degree calculating may be selected in step 301: according to 16 spellings to be selected identified in step 2
Three selection influence indexs of each assembled point to be selected in position are decorateeed, and in conjunction with the weight system of three selection influence indexs
Number is respectively calculated the preference degree of 5 in the step 1 optional assembled points；
Shield described in three selection influence indexs of m point in 5 optional assembled points determined by step 1
Structure machine posture, shield machine jack progressive error and gap of the shield tail, are denoted as Z (m), Q (m) and D (m) respectively；Wherein, m is positive integer
And m=a, b, c, d or e；
When calculating the preference degree of m point in 5 optional assembled points, according to formula H (m)=λD·D
(m)+λQ·Q(m)+λZZ (m) (5) is calculated；
In this step, the preference degree of calculated a point, b point, c point, d point and e point is denoted as H (a), H (b), H respectively
(c), H (d) and H (e)；
Step 302, optional assembled point preference degree compare: to 5 optional spellings calculated in step 301
Preference degree H (a), H (b), H (c), H (d) and the H (e) for decorateeing position are compared, and from 5 optional assembled points
Find out the maximum optional assembled point of preference degree；
The maximum optional assembled point of the preference degree found out is denoted as N point, and N point is the best optional spelling of selectivity
It decorates position and it is the pipe sheet assembling point when front ring shield duct piece；Wherein, N is positive integer and 1≤N≤16.
During carrying out Shield Construction Method Used to institute's construction tunnel, shield is carried out to tunnel segment locating for front ring shield duct piece is worked as
When structure tunneling construction, under normal circumstances, Shield Construction Method Used, the tunnel central axis should be carried out by the tunnel central axis
For the design centre axis of institute's construction tunnel；But during practice of construction, to overcome duct piece float upward, attitude of shield machine adjustment etc. all
Multifactor influence, it is ensured that the actual installation position of assembly molding shield duct piece, when reality carries out Shield Construction Method Used, according to another
The datum axis of outer determination carries out Shield Construction Method Used, which is revised Shield Construction Method Used benchmark, also referred to as
Attitude of shield machine benchmark.
The Sj is preset before tunnel segment locating for front ring shield duct piece carries out Shield Construction Method Used to working as
Horizontal departure amount of the shield (in specifically in the middle part of shield, i.e., the geometric center point of middle shield) relative to tunnel central axis in shield machine,
Cj is that shield is (specific in preset shield machine to working as before tunnel segment locating for front ring shield duct piece carries out Shield Construction Method Used
Be in the middle part of middle shield, i.e., in shield geometric center point) vertical missing amount relative to tunnel central axis, thus Sj is in shield machine
The level of datum axis and tunnel central axis is inclined at shield (in the middle part of specifically middle shield, i.e., the geometric center point of middle shield) present position
Residual quantity, Cj are datum axis and tunnel at shield in shield machine (in specifically in the middle part of shield, i.e., the geometric center point of middle shield) present position
The vertical missing amount of road central axis.
When practice of construction, under normal circumstances, shield machine horizontal attitude benchmark Sj=0, and shield machine perpendicular attitude benchmark Cj
=0.In the present embodiment, Sj=Cj=0.
During practice of construction, to realize Precise control, it is ensured that the positional accuracy in construction molding tunnel considers section of jurisdiction
The influences of the factors to institute's construction tunnel axis such as floating, attitude of shield machine adjustment, carry out phase to the value size of Sj and Cj respectively
It should adjust, realize that easy and using effect is good, construction personnel can according to specific needs, to shield machine horizontal attitude benchmark Sj and shield
Structure machine perpendicular attitude benchmark Cj is adjusted accordingly.
When reality is determined attitude of shield machine benchmark, -50mm≤Sj≤50mm, -50mm≤Cj≤50mm.For example,
It when considering influence of the duct piece float upward to institute's construction tunnel axis, needs to consider that duct piece float upward amount is offset, needs to hang down to shield machine at this time
Straight attitude reference Cj is adjusted, since duct piece float upward is common phenomenon in shield-tunneling construction, for the float-amount for offsetting section of jurisdiction, by shield
Structure machine perpendicular attitude benchmark Cj is adjusted to negative value identical with float-amount, as duct piece float upward amount be 30mm when, shield machine is vertical
Attitude reference Cj is adjusted to -30mm.
When reality is determined the datum axis, according to engineering reality, passes through measurement shield duct piece and deviate from shield machine shield
The difference between posture after posture when tail and shield duct piece are stable, determines the displacement of abjection shield machine shield tail backing structure section of jurisdiction
Value, and according to the shift value of abjection shield machine shield tail backing structure section of jurisdiction, the datum axis of reference in shield tunneling process is carried out
It determines.
It is typically all the Tunnel Design line style for input in segment array software used at present, joins in conjunction with tunnel segment structure
Number carries out fitting of the section of jurisdiction to route, and the factor of consideration includes the basic parameter of section of jurisdiction, such as wedge-shaped amount, ring width, minimum rotation
Angle, piecemeal etc. and attitude of shield machine, jack cylinder stroke, gap of the shield tail etc..But in actual field work progress, shield
After structure pipe sheet assembling deviates from shield tail, often there is more apparent rising phenomenon, in order to ensure molding tunnel axis is controlled, at this time
Shield machine driving axis reference is no longer design tunnel axis (i.e. tunnel central axis), and often selects reserved Segment displacement
The line lower axis of amount is as reference.Shield machine and section of jurisdiction axis should be close to design tunnels when existing segment array software presses driving
The principle of axis designs, the feelings that shield machine and section of jurisdiction axis and design tunnel axis have differences when not tunneling in view of reality
Condition, therefore typesetting result is not inconsistent actually with scene in the actual construction process, accuracy rate is low, and software is caused to be transported in practice in engineering
It is not high with degree.And this can effectively be overcome the problems, such as using the present invention.
In the present embodiment, to realize that convenient and calculating process is simple, calculating speed is fast, calculated result is accurate, in step 301
When may be selected assembled point preference degree calculating, using data processing equipment to 5 in the step 1 optional assembly
The preference degree of point is respectively calculated.
In the present embodiment, the data processing equipment is PC machine.In actual use, the data processing equipment can also be adopted
With palm PC, data processing chip etc..
When being respectively calculated to the preference degree of 5 in the step 1 optional assembled points, need to first it use and institute
The data input device for stating data processing equipment connection inputs the Shield Construction Method Used parameter, the setup parameter and a upper ring
The pipe sheet assembling point of shield duct piece.Wherein, the attitude of shield machine parameter in the Shield Construction Method Used parameter, shield machine are very heavy
Top row path difference parameter and gap of the shield tail parameter are the actual measurement parameter that measurement obtains and three is actual measured value.
When being determined to shield machine jack progressive error parameter, according to the tunnel segment locating for the front ring shield duct piece into
The stroke QZ of shield machine left side jack, the stroke QY of shield machine right side jack, shield machine top when row Shield Construction Method Used
The stroke QS of jack and the stroke QX of shield machine lower part jack are determined, and wherein QZ, QY, QS and QX are actual measurement
Value, since shield machine jack is hydraulic jack, thus QZ, QY, QS and QX are the oil cylinder stroke of corresponding jack.Institute
QZ, QY, QS and the QX stated be shield machine operation panel on or shield machine tunnel operating system on show shield machine top, under
Portion, left and right side jack run-length data (also referred to as oil cylinder stroke data), realize that easy and data are accurate, reliable.
When being determined to the attitude of shield machine parameter, shield machine horizontal attitude SP and shield machine perpendicular attitude CZ are
Actual measured value and the two can be directly acquired from the driving guidance system of the shield machine, realize easy and data it is accurate,
Reliably.When being measured to SP and CZ, middle part laying measuring cell it can be measured in the middle part of the shield machine.
When being determined to the gap of the shield tail parameter, between top gap of the shield tail DS, lower part gap of the shield tail DX, left side shield tail
Gap DZ and right side gap of the shield tail DY is actual measured value, is surveyed by Field Force and obtains numerical value.Also, the gap of the shield tail ginseng
Number is the gap of the shield tail before front ring shield segment assembling.Wherein, gap of the shield tail DS in top is to locating for the front ring shield duct piece
Tunnel segment carries out gap between shield machine shield tail top and upper ring shield duct piece after Shield Construction Method Used, between the shield tail of lower part
Gap DX is shield machine shield tail lower part and a upper ring shield after carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
Gap between structure section of jurisdiction, left side gap of the shield tail DZ are to carry out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
Afterwards the gap between upper ring shield duct piece on the left of shield machine shield tail, right side gap of the shield tail DY is to when front ring shield duct piece institute
Gap after place tunnel segment progress Shield Construction Method Used on the right side of shield machine shield tail between upper ring shield duct piece.
When practice of construction, it is easy to operate and intuitive display, also needs the ring number for inputting upper ring shield duct piece, and upper one
The ring number of ring shield duct piece and the pipe sheet assembling point of upper ring shield duct piece are obtained by Field Force according to live reality.
Attitude of shield machine benchmark, attitude of shield machine deviation threshold s, jack progressive error threshold value q in the setup parameter
It is the parameter artificially set according to specific needs with gap of the shield tail permissible value d.In addition, also needing input tunnel segment structure parameter
With the weight coefficient of the predetermined three selection influence indexs, the tunnel segment structure parameter includes working as front ring shield duct piece
Width L, the wedge shape amount Δ and as the diameter D of front ring shield duct piece when front ring shield duct piece.In the present embodiment, institute's construction tunnel
In each ring shield duct piece tunnel segment structure parameter it is all the same.Three weight coefficients for selecting influence index are three institutes of judgement
State the coefficient of significance level of the selection influence index in the point position selection of section of jurisdiction.
After the selective evaluation for completing optional assembled point in the present embodiment, in step 3, obtained according in step 3
When front ring shield duct piece pipe sheet assembling point, to it is described when front ring shield duct piece carry out assembling construction.
Also, it is applied when front ring shield duct piece carries out assembling construction using conventional shield segment assembling lining cutting to described
Work method carries out assembling construction.After the completion of assembling construction, a section of jurisdiction ring is obtained.Every ring shield duct piece is by one piece of block that binds
(i.e. K block), two pieces of adjacent blocks for being located at the block two sides of binding and muti-piece are connected to the mark between two adjacent blocks
Quasi- block is assembled, obtained in step 3 when front ring shield duct piece pipe sheet assembling point be bind when in front ring shield duct piece
The position (position in the middle part of the block that specifically binds) of block.
In addition, being dug when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece according to conventional shield
It constructs into construction method.
After the selective evaluation for completing optional assembled point in the present embodiment, in step 3, also need to when front ring shield
Shield machine jack travel information and gap of the shield tail information after the completion of pipe sheet assembling construction are respectively calculated；
When front ring shield segment assembling construction after the completion of shield machine jack travel information include YGS, YGX, YGZ and
YGY；Wherein, YGS is the stroke of the shield machine top jack after the completion of the construction of front ring shield segment assembling, and YGX is to work as front ring
The stroke of shield machine lower part jack after the completion of shield segment assembling construction, YGZ are to construct to complete when front ring shield segment assembling
The stroke of shield machine left side jack afterwards, YGY are the shield machine right side jack after the completion of the construction of front ring shield segment assembling
Stroke；
Gap of the shield tail information after the completion of the construction of front ring shield segment assembling includes DWS, DWX, DWZ and DWY；Wherein,
DWS is the top gap of the shield tail after the completion of the construction of front ring shield segment assembling, and DWX is when front ring shield segment assembling has been constructed
Lower part gap of the shield tail after, DWZ are the left side gap of the shield tail after the completion of the construction of front ring shield segment assembling, and DWY is current
Right side gap of the shield tail after the completion of the construction of ring shield segment assembling.
Thus, it can easy, fast and accurately be calculated after the completion of the construction of front ring shield segment assembling using of the invention
Shield machine jack travel information and gap of the shield tail information, according to being calculated after the completion of the construction of front ring shield segment assembling
Gap of the shield tail information, the pipe sheet assembling point determined by step 3 when front ring shield duct piece can further be tested
Card, practicability are very strong.
After described after the completion of front ring shield duct piece carries out assembling construction, spelled according to the front ring shield duct piece of working as being calculated
Shield machine jack travel information after the completion of dress construction, controls shield machine jack.Then, to next ring shield pipe
Tunnel segment locating for piece carries out Shield Construction Method Used；So not counting repeating, until completing the shield-tunneling construction process of institute's construction tunnel.
Wherein, when calculating the shield machine jack travel information after the completion of the construction of front ring shield segment assembling,
Described In formula (6-1), (6-2), (6-3) and (6-4), L is when front ring shield
The width of structure section of jurisdiction, Δ are the wedge shape amount when front ring shield duct piece；
It is described when calculating the gap of the shield tail information after the completion of the construction of front ring shield segment assembling
AndFormula (7-1), (7-2), (7-3)
In (7-4), L is the width when front ring shield duct piece, and Δ is the wedge shape amount when front ring shield duct piece, and D is when front ring shield pipe
The diameter (i.e. outer diameter) of piece, between l is between the spacing or shield machine left and right sides jack between the jack of shield machine top and the bottom
Away from wherein the spacing between the spacing between the jack of shield machine top and the bottom and shield machine left and right sides jack is identical.
To sum up, it (is completed after the Shield Construction Method Used process of front ring shield duct piece) after the completion of completing this ring driving,
According to section of jurisdiction point position selection principle, respectively to 16 assembled point assignment to be selected, embodied by assignment described in consideration three
The washability (i.e. selectivity or preference degree) of each assembled point to be selected under the influence of selection influence index.It is to be selected for any one
When assembled point carries out assignment, it is both needed to consider the influence of three selection influence indexs, and according to each selection influence index
Influence degree carries out assignment, also protrudes or weaken the importance of corresponding selection influence index by assignment.In this way, described in 16 to
It selects in assembled point, there are three assignment, i.e. Z for each described corresponding three described selection influence index of assembled point to be selected
(n), Q (n) and D (n).Meanwhile in conjunction with three it is described selection influence index weight coefficients, just can calculate 16 described in
The weighted value (i.e. preference degree) of each assembled point to be selected in assembled point is selected, the weighted value of each assembled point to be selected is corresponding three
Three assignment (i.e. Z (n), Q (n) and D (n)) of a selection influence index and the weight in three selection influence indexs
Coefficient lambdaZ、λQAnd λDProduct, i.e., according to formula H (n)=λD·D(n)+λQ·Q(n)+λZZ (n) (5-1) is calculated.Root
5 optional assembled points when front ring shield duct piece can be extrapolated according to the pipe sheet assembling point of upper ring shield duct piece, are compared
The size of the weighted value of this 5 optional points, using the maximum optional assembled point of weighted value as when front ring shield duct piece
Assembled point.
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. a kind of general ring pipe sheet assembling point of shield determines method, it is characterised in that: using shield machine along tunnel central axis
Shield Construction Method Used is carried out to institute's construction tunnel from the front to the back, progress shield segment assembling is applied after Shield Construction Method Used completes a ring
Work；
Before any ring shield segment assembling construction, first the pipe sheet assembling point when front ring shield duct piece is determined, process
It is as follows:
It is determined Step 1: assembly point may be selected: according to shield duct piece staggered joint erection method, and according to upper ring shield duct piece
Pipe sheet assembling point selects 5 optional assembled points when front ring shield duct piece from 16 assembled points to be selected；
16 the assembled point to be selected is along the circumferential direction uniformly distributed and it is respectively 1 point, 2 from front to back along clockwise direction
Point ..., 16 points；
5 optional assembled points be denoted as respectively a point, b point, c point, d point and e point and its along clockwise direction from front to back
Arrangement；Wherein, a, b, c, d and e are positive integer, 1≤a≤16,1≤b≤16,1≤c≤16,1≤d≤16,1≤e≤16；
Step 2: selection influence index and its weight coefficient determine: being carried out according to the tunnel segment locating for the front ring shield duct piece
Shield Construction Method Used parameter when Shield Construction Method Used, to three selection influence indexs and three for influencing pipe sheet assembling point position selection
The weight coefficient of a selection influence index is determined respectively；
Three selection influence indexs are respectively attitude of shield machine, shield machine jack progressive error and gap of the shield tail；
Step 3: the selective evaluation of assembly point may be selected: being referred to according to three selections influences identified in step 2
Mark and its weight coefficient, and according to Exchanger Efficiency with Weight Coefficient Method to the selectivity of 5 in the step 1 optional assembled points respectively into
Row evaluation, and best one described optional assembled point is used as when the section of jurisdiction of front ring shield duct piece using the selectivity evaluated
Assembled point；
The weight coefficient of attitude of shield machine described in three selection influence indexs is denoted as λ in step 2Z, shield machine jack
The weight coefficient of progressive error is denoted as λQ, the weight coefficient of gap of the shield tail is denoted as λD；Wherein, 0 < λZ1,0 < λ of <Q1,0 < λ of <D<
1, λZ+λQ+λD=1；
Shield Construction Method Used parameter described in step 2 includes attitude of shield machine parameter, shield machine jack progressive error parameter and shield
Tail gap parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield pick
Into horizontal departure amount of the shield relative to tunnel central axis in shield machine when construction, shield in shield machine when CZ is Shield Construction Method Used
Vertical missing amount relative to tunnel central axis；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack progressive error
QSX；Wherein, QZY=QZ-QY, QZ are shield machine when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of left side jack, QY are when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece on the right side of shield machine
The stroke of jack；QSX=QS-QX, QS are shield when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of structure machine top jack, QX are shield machine when carrying out Shield Construction Method Used to the tunnel segment locating for the front ring shield duct piece
The stroke of lower part jack；
The gap of the shield tail parameter includes top gap of the shield tail DS, lower part gap of the shield tail DX, left side gap of the shield tail DZ and right side shield
Tail clearance D Y；
In step 2 to influence pipe sheet assembling point position selection three selection influence indexs be determined when, need to described in 16 to
Three selection influence indexs of each assembled point to be selected in assembled point are selected to be determined respectively；
Attitude of shield machine, shield machine jack described in three selection influence indexs of n point in 16 assembled points to be selected
Progressive error and gap of the shield tail are denoted as Z (n), Q (n) and D (n) respectively；Wherein, n be positive integer and n=1,2 ..., 16；
When being determined to Z (n), Q (n) and D (n), shield driving is carried out according to the tunnel segment locating for the front ring shield duct piece
Shield Construction Method Used parameter when construction, and be determined in conjunction with preset setup parameter；The setup parameter includes shield
Structure machine attitude reference, attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value d；Wherein, s >
0, q > 0 and d > 0；
The attitude of shield machine benchmark includes shield machine horizontal attitude benchmark Sj and shield machine perpendicular attitude benchmark Cj, and wherein Sj is
Shield is carried out before Shield Construction Method Used in preset shield machine relative to tunnel to the tunnel segment locating for the front ring shield duct piece
The horizontal departure amount of road central axis, Cj are pre- before tunnel segment locating for front ring shield duct piece carries out Shield Construction Method Used to working as
Vertical missing amount of the shield relative to tunnel central axis in the shield machine first set；
When being determined to Z (n), according to formula Z (n)=Z1(n)+Z2(n) (1) is determined；
In formula (1), Z1(n) according to shield machine horizontal attitude SP, shield machine horizontal attitude benchmark Sj and attitude of shield machine deviation threshold
Value s is determined:
As SP-Sj <-s,
As-s≤SP-Sj < 0,
As 0≤SP-Sj < s,
As SP-Sj >=s,
In formula (1), Z2(n) according to shield machine perpendicular attitude CZ, shield machine perpendicular attitude benchmark Cj and attitude of shield machine deviation threshold
Value s is determined:
As CZ-Cj≤- s,
As-s < CZ-Cj≤0,
As 0 < CZ-Cj≤s,
As CZ-Cj > s,
When being determined to Q (n), according to formula Q (n)=Q1(n)+Q2(n) (2) are determined；
In formula (2), Q1(n) it is determined according to left and right sides jack progressive error QZY and jack progressive error threshold value q:
As QZY <-q,
As-q≤QZY < 0,
As 0≤QZY < q,
As QZY >=q,
In formula (2), Q2(n) it is determined according to upper and lower sides jack progressive error QSX and jack progressive error threshold value q:
As QSX≤- q,
As-q < QSX≤0,
As 0 < QSX≤q,
As QSX > q,
When being determined to D (n), according to formulaIt is determined；
In formula (3), D1(n) it is determined according to top gap of the shield tail DS and gap of the shield tail permissible value d:
As DS < d,
As DS >=d, D1(n)=0；
In formula (3), D2(n) it is determined according to lower part gap of the shield tail DX and gap of the shield tail permissible value d:
As DX < d,
As DX >=d, D2(n)=0；
In formula (3), D3(n) it is determined according to left side gap of the shield tail DZ and gap of the shield tail permissible value d:
As DZ < d,
As DZ >=d, D3(n)=0；
In formula (3), D4(n) it is determined according to right side gap of the shield tail DY and gap of the shield tail permissible value d:
As DY < d,
As DY >=d, D4(n)=0.
2. the general ring pipe sheet assembling point of shield described in accordance with the claim 1 determines method, it is characterised in that: institute's construction tunnel
In be located at most rear side a ring described in shield duct piece be initial ring shield duct piece, it is described when front ring shield duct piece be positioned at it is described just
Shield duct piece described in a ring on front side of beginning ring shield duct piece；
After the selective evaluation for completing optional assembled point in step 3, also need to when the construction of front ring shield segment assembling is completed
Shield machine jack travel information and gap of the shield tail information afterwards is respectively calculated；
Shield machine jack travel information after the completion of the construction of front ring shield segment assembling includes YGS, YGX, YGZ and YGY；Its
In, YGS is the stroke of the shield machine top jack after the completion of the construction of front ring shield segment assembling, and YGX is when front ring shield pipe
The stroke of shield machine lower part jack after the completion of piece assembling construction, YGZ are the shield after the completion of the construction of front ring shield segment assembling
The stroke of jack on the left of machine, YGY are the stroke of the jack on the right side of shield machine after the completion of the construction of front ring shield segment assembling；
Gap of the shield tail information after the completion of the construction of front ring shield segment assembling includes DWS, DWX, DWZ and DWY；Wherein, DWS is
Top gap of the shield tail after the completion of the construction of front ring shield segment assembling, DWX are after the completion of the construction of front ring shield segment assembling
Lower part gap of the shield tail, DWZ be when front ring shield segment assembling construction after the completion of left side gap of the shield tail, DWY be when front ring shield
Right side gap of the shield tail after the completion of the construction of structure pipe sheet assembling.
3. the general ring pipe sheet assembling point of shield according to claim 1 or 2 determines method, it is characterised in that: step 2
In three it is described selection influence index weight coefficients in the maximum weight coefficient of numerical value be denoted as λM, λM=0.4~0.6；Three institutes
It states the smallest weight coefficient of numerical value in the weight coefficient of selection influence index and is denoted as λm, λm=0.1~0.3.
4. the general ring pipe sheet assembling point of shield described in accordance with the claim 3 determines method, it is characterised in that: right in step 2
The weight coefficients of three selection influence indexs are when being determined, first according to work as tunnel segment locating for front ring shield duct piece into
Shield Construction Method Used parameter when row Shield Construction Method Used, and preset setup parameter is combined, to three selection shadows
Snap target influence degree is determined respectively；Weight coefficient=λ of the maximum selection influence index of influence degreeM, influence journey
Spend weight coefficient=λ of the smallest selection influence indexm；
The setup parameter includes attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value d；Its
In, s > 0, q > 0 and d > 0.
5. the general ring pipe sheet assembling point of shield determines method according to claim 4, it is characterised in that: institute in step 2
Stating Shield Construction Method Used parameter includes attitude of shield machine parameter, shield machine jack progressive error parameter and gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield pick
Into horizontal departure amount of the shield relative to tunnel central axis in shield machine when construction, shield in shield machine when CZ is Shield Construction Method Used
Vertical missing amount relative to tunnel central axis；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack progressive error
QSX；
The gap of the shield tail parameter includes top gap of the shield tail DS, lower part gap of the shield tail DX, left side gap of the shield tail DZ and right side shield
Tail clearance D Y；
When being determined to the influence degree of three selection influence indexs, process is as follows:
Step 201, the judgement of gap of the shield tail parameter: by gap of the shield tail parameter middle and upper part gap of the shield tail DS, lower part gap of the shield tail
DX, left side gap of the shield tail DZ and right side gap of the shield tail DY carry out difference comparsion with gap of the shield tail permissible value d respectively: as DS, DX, DZ
When being not less than d with DY, 202 are entered step；Otherwise, it is judged as the shadow of gap of the shield tail described in three selection influence indexs
The degree of sound is maximum, and the influence degree of the attitude of shield machine is minimum, and completes the influence degree of three selection influence indexs
Determination process；
Step 202, the judgement of shield machine jack progressive error parameter: by left and right sides jack progressive error QZY and upper and lower sides jack
Progressive error QSX carries out difference comparsion with jack progressive error threshold value q respectively: when QZY and QSX is no more than q, entering step
203；Otherwise, it is judged as that the influence degree of shield machine jack progressive error described in three selection influence indexs is maximum, institute
The influence degree for stating gap of the shield tail is minimum, and completes the influence degree determination process of three selection influence indexs；
Step 203, attitude of shield machine parameter judgement: by shield machine horizontal attitude SP and shield machine perpendicular attitude CZ respectively with shield
Machine attitude misalignment threshold value s carries out difference comparsion: as SP > s or CZ > s, being judged as described in three selection influence indexs
The influence degree of attitude of shield machine is maximum, and the influence degree of the shield machine jack progressive error is minimum, and completes described in three
Select the influence degree determination process of influence index；Otherwise, it is judged as shield machine thousand described in three selection influence indexs
The influence degree of jin top row path difference is maximum, and the influence degree of the gap of the shield tail is minimum, and completes three selection influences and refer to
Target influence degree determination process.
6. the general ring pipe sheet assembling point of shield determines method according to claim 4, it is characterised in that: the s=
10mm~100mm, q=30mm~100mm, d=5mm~55mm.
7. the general ring pipe sheet assembling point of shield described in accordance with the claim 1 determines method, it is characterised in that: in step 3 into
When the selective evaluation of assembled point may be selected in row, process is as follows:
Assembled point preference degree calculating may be selected in step 301: according to 16 assembled points to be selected identified in step 2
Three selection influence indexs of each assembled point to be selected in position, and in conjunction with the weight coefficient of three selection influence indexs, it is right
The preference degree of 5 optional assembled points is respectively calculated in step 1；
Shield machine described in three selection influence indexs of m point in 5 optional assembled points determined by step 1
Posture, shield machine jack progressive error and gap of the shield tail, are denoted as Z (m), Q (m) and D (m) respectively；Wherein, m is positive integer and m=
A, b, c, d or e；
When calculating the preference degree of m point in 5 optional assembled points, according to formula H (m)=λD·D(m)+
λQ·Q(m)+λZZ (m) (5) is calculated；
In this step, the preference degree of calculated a point, b point, c point, d point and e point is denoted as H (a), H (b), H (c), H respectively
(d) and H (e)；
Step 302, optional assembled point preference degree compare: to 5 optional assembled points calculated in step 301
Preference degree H (a), H (b), H (c), H (d) and the H (e) of position are compared, and are found out from 5 optional assembled points
The maximum optional assembled point of preference degree；
The maximum optional assembled point of the preference degree found out is denoted as N point, and N point is the best optional assembled point of selectivity
Position and its be when front ring shield duct piece pipe sheet assembling point；Wherein, N is positive integer and 1≤N≤16.
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| CN201710963664.1A CN107725067B (en) | 2016-02-19 | 2016-02-19 | The general ring pipe sheet assembling point of shield determines method |
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| CN201610093860.3A CN105673041B (en) | 2016-02-19 | 2016-02-19 | A kind of general ring pipe sheet assembling point position of subway shield tunnel construction determines method |
| CN201710963664.1A CN107725067B (en) | 2016-02-19 | 2016-02-19 | The general ring pipe sheet assembling point of shield determines method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106934159B (en) * | 2017-03-14 | 2018-09-07 | 中交一公局厦门工程有限公司 | A kind of duct pieces of shield tunnel assembly point bit digitizing type selecting assembling method |
| CN107620602B (en) * | 2017-08-09 | 2019-12-24 | 中国铁建重工集团股份有限公司 | Segment assembling machine and segment assembling method |
| CN108979648B (en) * | 2018-08-28 | 2019-08-30 | 中铁工程服务有限公司 | A kind of shield machine segment ring number calculation method |
| CN109779655B (en) * | 2019-01-03 | 2020-10-23 | 中铁隧道集团二处有限公司 | Construction method for assembling staggered joints of shield segments |
| CN109948188B (en) * | 2019-02-19 | 2023-07-14 | 中国铁建重工集团股份有限公司 | Segment selection method |
| CN109723463B (en) * | 2019-03-01 | 2024-03-22 | 中铁工程服务有限公司 | Selection instrument suitable for six piecemeal section of jurisdictions |
| CN110119564B (en) * | 2019-05-07 | 2022-02-15 | 中铁工程装备集团有限公司 | Segment preselection method based on automatic measurement of shield tail clearance |
| CN110135047B (en) * | 2019-05-10 | 2023-07-25 | 上海隧道工程有限公司 | General segment selection type correction method |
| CN113073994A (en) * | 2020-01-06 | 2021-07-06 | 上海申通地铁集团有限公司 | Novel subway shield tunnel segment splicing process |
| CN114075986B (en) * | 2021-03-25 | 2024-01-30 | 上海大学 | Segment assembly point position selection system and method |
| CN113107503B (en) * | 2021-04-27 | 2022-08-02 | 中铁工程装备集团有限公司 | Shield machine simultaneously adapting to two segment assembling point positions |
| CN114017060B (en) * | 2021-09-18 | 2024-02-09 | 中铁十局集团第一工程有限公司 | Method for selecting shield segment |
| CN114109411A (en) * | 2021-11-30 | 2022-03-01 | 中铁一局集团有限公司 | Pipe sheet assembling point position selection device in shield construction, selection method and application |
| CN114352313A (en) * | 2021-12-07 | 2022-04-15 | 上海市基础工程集团有限公司 | Simulation turntable for selecting splicing point positions of general wedge-shaped duct pieces |
| CN116049969B (en) * | 2023-04-03 | 2023-06-20 | 中国建筑第六工程局有限公司 | Method for selecting point positions of universal wedge-shaped duct pieces |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105673041B (en) | 2018-01-12 |
| CN105673041A (en) | 2016-06-15 |
| CN107725067A (en) | 2018-02-23 |
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