Modern high precision, high speed measurement of segments and …Segment... · 2012. 10. 2. ·...
Transcript of Modern high precision, high speed measurement of segments and …Segment... · 2012. 10. 2. ·...
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Modern high precision, high speed measurement of segments and moulds
Presented by Nod Clarke-Hackston
International Sales Manager VMT
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Mould & Segment Measurement14.2m Diameter Tunnel Boring Machine – Elbe Tunnel - Germany
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Mould & Segment MeasurementS-300 machine used in the construction of M30 Highway in Madrid
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Mould & Segment MeasurementM30 Tunnel showing segmental lining
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Mould & Segment MeasurementGeometrical Verification of main body of S 300 machine
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Mould & Segment MeasurementLaser tracker and workstation position for outer measurement
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Mould & Segment MeasurementRetro-reflective Prism positioning via scaffolding
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Mould & Segment Measurement3D view showing measurement area
Range of operation from one standpoint Typical fixed point set-up
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Mould & Segment MeasurementInside reference for main gear mounting
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Mould & Segment MeasurementPlan of measurement operating area
Point cloud distribution without BundlingScale exaggerated by 1000
Point cloud distribution with BundlingScale exaggerated by 1000
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Mould & Segment MeasurementPresentation of results in Customers preferred style
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Level 6
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Mould & Segment Measurement
• Requirements for segmental liners:
- Full plane surface contact in radial and circumferential joints due to the high loads being transferred among them
- Correct linear dimensions to avoid stepping and lipping
- Correct angles between contact surfaces to minimize birds mouthing or uneven point loads
• Documentary evidence that only certified segments have been used in the tunnel construction
Geometrical Verification as part of Quality Management
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Mould & Segment MeasurementSample ring build
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Mould & Segment Measurement
Circumferential LengthRadial face to Radial face ± 1.5mmMax each face ± 0.75mm
Internal Radius of Ring± 1.5mm
Theoretical Centre of Circular Tunnel Lining
Segment Tolerance
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Mould & Segment Measurement
Angle of Joint Plane fromPerpendicular, measuredat Face of Joint ± 0.03°
Angle of Joint Plane from perpendicular,measured at Face of Joint ± 0.03°
Thickness-0.0 mm +3.0 mm
Inside Diagonal Chordson a given segment± 1.5 mm
Variations of Joint surfacefrom plane ± 0.75mm
Width –Circumferential Faceto Circumferential Face± 1.0 mmMax each face ± 0.5 mm
Segmental Dimensional Tolerance
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Mould & Segment Measurement
Three Contact Points
Plane Surface0.75mm
Warping Tolerance
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Mould & Segment Measurement
1 Circumferential Length + 3mm, - 0mm. 2 Thickness + 3mm, -1mm. 3 Width +1mm, -1mm. 4 Internal Diameter of
completed ring +0.15%, -0mm. of theoretical diameter
5 Bolt Hole sizes +1mm, -0mm. 6 Bolt holes and dowels:
position +1mm, -1mm.
7 E & M Fixing holes (TBA) (TBA) 8 Gasket Grooves: depth +0.5mm -0.5mm 9 Gasket Grooves: width +0.5mm -0.5mm 10 Longitudinal Joints In plane containing axis of
the tunnel (longitudinal) 0.3mm from theoretical plane with rate of
deviation not exceeding 0.6mm/m In a Radial plane 0.1mm from theoretical plane with rate of
deviation not exceeding 0.6mm/m 11 Circumferential faces 0.5mm from theoretical plane with rate of
deviation not exceeding 1mm/m 12 Smoothness of other faces Back +1.5mm -1.5mm Smooth float Front +1mm -1mm Formed
Typical Segmental Dimensional Tolerance
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Mould & Segment MeasurementOptimum time for measurement of segments
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Mould & Segment MeasurementAll segment measurement at the same phase
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Mould & Segment MeasurementMethods for precise mould and segment control
• Steel Templates
• Theodolite Measurement Systems
• Photogrammetry
• Laser Interferometer System
• Measurement arms
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Mould & Segment MeasurementLaser Tracker System
Accurate digitization of surfaces by direct polar co-ordinate
measurement
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Mould & Segment MeasurementLaser Tracker Instrument
High precision horizontal andvertical angle encoders
Hand held reflector for object probing
Motors for tracking andautomatic positioning
Position detector for precise high-speed
tracking
High precisioninterferometer distance
measuring device
Convenient positioningwith portable stand
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Mould & Segment MeasurementLarge Segment Measurement in Malaysia
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Mould & Segment MeasurementCentral Positioning for measuring Key Segment Moulds
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Mould & Segment MeasurementSpeed of prism across surface
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Mould & Segment MeasurementView of measurement area
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Mould & Segment MeasurementMeasured Points Trace
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Mould & Segment MeasurementSpatial Analyzer 3D Graphical Software platform
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Mould & Segment MeasurementVMT’s TubGeo© Evaluation Software
• TubGeo© software processes 3D co-ordinates for the geometrical properties of moulds and segments
• Interactive guidance of the user during the entire measurement process
• Visual Basic Scripts for the controlling of regular measurements with individual programming for repetitive tasks.
• User defined formatting of final report together with an extensive log-file of intermediate results
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Mould & Segment MeasurementBest Fit - Volume
1mm1mm
1mm
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Mould & Segment MeasurementGraphical and Tabular Records
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Mould & Segment MeasurementTest Certificate
D ate : 27 .09 .2001 S egm en t N o . 0013A5R 10
T im e: 10 :41 :28 S egm ent Type: A 5 Tem pera ture : +25 .0°C Taper: R
C rite ria: M easurem ent D esign V a lue D IFFerence TO Lerance R elease
S m oothness o f con tac t surfaces
R ad ia l Jo in t
Le ft: -0 .23m m + 0.00m m -0 .23m m ±0 .30m m Y E S R igh t: + 0 .13m m + 0.00m m +0 .13m m ±0 .30m m Y E S Front: -0 .34m m + 0.00m m -0 .34m m ±0 .50m m Y E S B ack : -0 .44m m + 0.00m m -0 .44m m ±0 .50m m Y E S
Inner rad ius (S ing le segm ent) Ins ide : -0 .60m m + 0.00m m -0 .60m m ±2 .00m m Y E S
L inear D im ens ions
S egm ent W idth Le ft / O uts ide : + 2021.87m m + 2021.94m m -0 .07m m ±0 .60m m Y E S Le ft / Ins ide : + 2020.29m m + 2020.14m m +0 .15m m ±0 .60m m Y E S M idd le / O uts ide : + 2021.59m m + 2021.94m m -0 .35m m ±0 .60m m Y E S M idd le / Ins ide : + 2020.03m m + 2020.14m m -0 .11m m ±0 .60m m Y E S R igh t / O u ts ide : + 2017.53m m + 2017.59m m -0 .06m m ±0 .60m m Y E S R igh t / Ins ide : + 2016.30m m + 2016.15m m +0 .15m m ±0 .60m m Y E S M ean: + 2019.90m m + 2020.00m m -0 .10m m ±0 .60m m Y E S
S egm ent Arc leng th Front / O u ts ide : + 4936.35m m + 4936.79m m -0 .44m m ±2 .00m m Y E S Front / Ins ide : + 4533.70m m + 4532.87m m +0 .83m m ±2 .00m m Y E S B ack / O u ts ide : + 4936.46m m + 4936.78m m -0 .32m m ±2 .00m m Y E S B ack / Ins ide : + 4533.81m m + 4532.87m m +0 .94m m ±2 .00m m Y E S M ean: + 4735.08m m + 4734.83m m +0 .25m m ±2 .00m m Y E S
Angu lar deviation S egm ent:d isp lacem ent ang le + 51 .431[°] + 51 .429 [°] +0 .002[°] ±0 .020 [°] Y E S
R ad ia l C on ica lity (over: + 450 .0m m ) Le ft (Inne r): + 89.922[°] + 90 .000 [°] -0 .078 [°] ±0 .100 [°] Y E S -0 .61m m ±0 .79m m Y E S R igh t (Inner): + 89.914[°] + 90 .000 [°] -0 .086 [°] ±0 .100 [°] Y E S
Long itud ina l C on ica lity (over: +2019.90m m ) Front / Le ft: + 89.989[°] + 90 .000 [°] -0 .011 [°] ±0 .030 [°] Y E S Le ft / B ack : + 90.063[°] + 90 .052 [°] +0 .011[°] ±0 .030 [°] Y E S Le ft (F ron t): + 89.963[°] + 89 .974 [°] -0 .011 [°] ±0 .030 [°] Y E S -0 .38m m ±1 .05m m Y E S R igh t / F ron t: + 90.014[°] + 90 .000 [°] +0 .014[°] ±0 .030 [°] Y E S B ack / R ight: + 90.132[°] + 90 .146 [°] -0 .014 [°] ±0 .030 [°] Y E S R igh t (F ron t): + 89.941[°] + 89 .927 [°] +0 .014[°] ±0 .030 [°] Y E S +0 .49m m ±1 .05m m Y E S
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Mould & Segment MeasurementCorrection Scheme
• Illustrates any significant modifications proposed with respect to their feasibility
• Based on test certificate
• After any geometrical modification the mouldmust be resurveyed for confirmation
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Mould & Segment MeasurementVirtual Ring Build
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Mould & Segment MeasurementTolerances on Virtual Ring Build
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Mould & Segment MeasurementVirtual Ring Build – Multiple Rings
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Mould & Segment MeasurementSuggested Quality Assurance of Segments
1. Measurement control of all moulds before mass production
2. Measurement control of all segments after first pouring
3. Measurement control of all segments after 10th pouring
4. Measurement control of all segments after 20th pouring
5. Measurement control of all segments after 30th pouring
6. Tolerances on “closed“ (built) ring must NOT be the sum of all individual tolerances.
7. Individual tolerances should be compensated with the mathematical sign
8. Every controlled segment must be proved by a record sheet
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Thank you for your attention !