6. PREZENTACE. 1. Metro stations. Vaníček, I. 2. Monitoring of tunnel lining deformation and deterioration

Transcription

1 6. PREZENTACE BARCELONA, ŠPANĚLSKO, Metro stations Vaníček, I. 2. Monitoring of tunnel lining deformation and deterioration Vaníček,I., Vaníček,M., Záleský,J. 3. Prague Metro Monitoring Section in km Záleský,J.

2 Prague Metro Monitoring Section in km 18,725 Barcelona Meeting 11/12/2009 Jan Záleský

3 Placement of tilt plates and convergence bolts Test area 51,7 47,6 Initial inclination of tilt plates Axe of to horizontal plane 2.05 plate to horizontal plane 25,4 09,8 Yellow points convergence bolts C 04,4 L 00,6

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5 Convergence monitoring Started: Z reading 17/01/08 1 st reading 08/02/08 Changes in order of tenth of mm

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7 All results of tilt measurement 1,00 0,50 0,00-0,50-1,00-1,50-2,00 20,0 15,0 10,0 5,0 0,0-5,0-10,0 01/12/06 01/02/07 01/04/07 01/06/07 01/08/07 01/10/07 01/12/07 01/02/08 01/04/08 01/06/08 01/08/08 01/10/08 01/12/08 01/02/09 01/04/09 01/06/09 01/08/09 01/10/ [mm/m] 2.02 [mm/m] 2.03 [mm/m] 2.04 [mm/m] 2.05_C [mm/m] 2.05_L [mm/m] Temp. in deg.c

8 1,00 0,50 0,00-0,50-1,00-1,50-2,00 Left / Right of the Rail 20,0 15,0 10,0 01/10/09 01/04/07 01/06/07 01/08/07 01/10/07 01/12/07 01/02/08 01/04/08 01/06/08 01/08/08 01/10/08 01/12/08 01/02/09 01/04/09 01/06/09 01/08/ [mm/m] 2.04 [mm/m] Temp. in deg.c 5,0 0,0-5,0-10,0 01/12/06 01/02/07

9 Left / Right of the Tunnel Crown 20,0 1,00 15,0 0,50 10,0 0,00 5,0-0,50 0,0-1,00-5,0-1,50-10,0-2,00 01/12/06 01/02/07 01/04/07 01/06/07 01/08/07 01/10/07 01/12/07 01/02/08 01/04/08 01/06/08 01/08/08 01/10/08 01/12/08 01/02/09 01/04/09 01/06/09 01/08/09 01/10/ [mm/m] 2.03 [mm/m] Temp. in deg.c

10 Plate at Bottom of the Tunnel 1,00 0,50 0,00-0,50-1,00-1,50-2,00 20,0 15,0 10,0 5,0 0,0-5,0-10,0 01/12/06 01/02/07 01/04/07 01/06/07 01/08/07 01/10/07 01/12/07 01/02/08 01/04/08 01/06/08 01/08/08 01/10/08 01/12/08 01/02/09 01/04/09 01/06/09 01/08/09 01/10/ _C [mm/m] 2.05_L [mm/m] Temp. in deg.c

11 Cr Cr

12 0,03 0,02 0,01 0-0,01-0,02-0,03 Day 105 Crack Monitoring Change of deformation [mm] 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Temperature re of the sensor [ C] -0,04-0,05-0,06-0,07 Time [hh:mm] Crackmeter : Crack Crackmeter : Reference Crackmeter Diff. Temperature of the sensor Polynomický (Crackmeter Diff.)

13 GEOKON - VW Crackmeter

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17 Monitoring of tunnel lining deformation and deterioration Prof. Ivan Vaníček, DSc. Martin Vaníček, PhD. & Jan Záleský, CSc. Geotechnical Department Faculty of Civil Engineering Czech Technical University in Prague Czech Republic

18 Why to monitor tunnel lining Ageing optimum timing for the maintenance / repair (Design life years, Service life could be longer with proper maintenance) Building activity surface & subsurface Accidents / Hazards terrorist attacks, floods (as in Prague), earthquakes To investigate innovative methods of measurement TS 3B Monitoring and Performance, 17th ICSMGE Alexandria 2 Ivan Vaníček, Geotechnical Department, Czech Technical University in Prague

19 Types of Monitoring for tunnel lining ageing Whole profile Conventional monitoring Convergence measurements Innovative monitoring Computer vision based Local monitoring Conventional monitoring Tilting measurements Innovative monitoring Geophysical monitoring Lining vibration response on train passing Crack & micro-crack development Conventional monitoring Crackmeter measurements Innovative monitoring Micro-strain MEMS (Micro Electrical Mechanical Sensor) based Geophysical monitoring Longer section of metro tunnel Innovative monitoring 3D Laser scanning Computer vision based TS 3B Monitoring and Performance, 17th ICSMGE Alexandria 3 Ivan Vaníček, Geotechnical Department, Czech Technical University in Prague

20 Precision of measurements Conventional measurements Convergence measurements Sensitivity 0.01 mm Repeatability 0.05 mm Tiltmeter measurements Sensitivity 0.04 mm/m Crackmeter measurements Sensitivity mm Cr Cr TS 3B Monitoring and Performance, 17th ICSMGE Alexandria 4 Ivan Vaníček, Geotechnical Department, Czech Technical University in Prague

21 Precision of measurements Innovative measurements Micro-strain MEMS Sensitivity mm (still under investigation) Computer vision Sensitivity up to 0.1 mm 3D laser scanning Sensitivity 1-3 mm Geophysical Results are extremely sensitive but unit less TS 3B Monitoring and Performance, 17th ICSMGE Alexandria 5 Ivan Vaníček, Geotechnical Department, Czech Technical University in Prague

22 Results of deformation measurements Day 105 Crack Monitoring 1. Proved that changes in deformations in time are within measuring tolerances metro is in a good shape -0,06 2. Deformations are very -0,07 sensitive to temperature Time [hh:mm] and moisture changes Crackmeter : Crack Crackmeter : Reference Temperature of the sensor Change of deformation [mm] 0,03 0,02 0,01 0-0,01-0,02-0,03-0,04-0,05 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23: Temperature of the sensor [ C] Change of inclination [mm/m] 1,00 0,50 0,00-0,50-1,00-1,50 01/12/06 01/02/07 01/04/07 01/06/07 01/08/07 01/10/07 01/12/07 01/02/08 01/04/08 01/06/08 25,0 20,0 15,0 10,0 5,0 0,0 Temperature of the lining [ C] Plate 2.02 Plate 2.03 Temperature of the lining TS 3B Monitoring and Performance, 17th ICSMGE Alexandria 6 Ivan Vaníček, Geotechnical Department, Czech Technical University in Prague

23 Geophysical monitoring Proved even for short period of monitoring that there are invisible deteriorations in concrete lining TS 3B Monitoring and Performance, 17th ICSMGE Alexandria 7 Ivan Vaníček, Geotechnical Department, Czech Technical University in Prague

24 Data collection in tunnel Direct measurements Collection from datalogers Wired collection into station Wireless data collection and transfer This option is the optimum one as the data arrive immediately on the controllers PC GPRS Station BALLOON (Linux Computer) Ethernet SENSOR SECTION X 1 GATEWAY Hopping Trial 30m 100m 170m TS 3B Monitoring and Performance, 17th ICSMGE Alexandria 8 Ivan Vaníček, Geotechnical Department, Czech Technical University in Prague

25 Thank you for your attention Acknowledgement: To all cooperative partners of the ESF Underground M 3 project: - Cambridge University - Universidad Politécnica de Catalunya - Consiglio Nazionale delle Ricerche Bologna Czech Technical University was supported by Grant Agency of the Czech Republic - project No 103/09/1600

26 Holešovice station All measurements go on There is only problem with BALLOON, it is not possible to connect to the internet. Balloon will be removed by the end of this year

27 Můstek station Problems with access to metro reconstruction and maintenance works. Tense atmosphere in Prague metro staff threat of strike Negotiation with technical director of Prague metro Negotiation with technical director of Prague metro agreement. There is a possibility to install other measurement at Nuselsky bridge (concrete structure - top motorway, inside track of metro)

28 Můstek station Cambridge team Measurement of spreading of wireless network for data collection Detailed collection of pictures for computer vision

29 Můstek station Prague team Geophysical measurement Promising results, much more sensitive than results at Holešovice station It is possible to see technical condition of trains. WSN + sensors Already installed 100 m of Ethernet cable Plan to install the whole WSN system at the beginning of 2010 Other Laser scanning Numerical modelling - degradation of concrete structure + tunnel profile deformation

30 7. Seznam publikací za rok 2009: Vaníček,I., Vaníček,M., Macháček, J.: Zkušenosti s monitoringem metra z pohledu stárnutí podzemních konstrukcí. In: Zborník 9. Medzinárodnej konferencie Geotechnický monitoring, Bratislava, Slovenská republika, 2009, str , ISBN Vaníček,I., Vaníček,M., Záleský,J.: Monitoring of Tunnel Lining Deformation and Deterioration. In: Proc. of the 17 th International Conference on Soil Mechanics and Geotechnical Engineering, The Academia and Practice of Geotechnical Engineering Alexandria, Egypt, October 2009, pp , ISBN Macháček, J.: Programy pro vyhodnocení dat monitoringu dynamicky namáhaných stavebních konstrukcí. Autorizovaný software. Webová strana: Praha, Vaníček,I., Vaníček,M., Chamra,S.: Research of Ageing of Underground Infrastructures with the Help of Micro-Measurements and Monitoring; Systems. In: 18th Annual CTU University-Wide Seminář Workshop 09 CTU Reports, Speciál Issue, Part B, Volume 13, February 2009, pp , ISBN Bennett,P.J., Abe, K., Wassell, I., Kobayashi, Y., Vaníček, M., Soga, K.: Wireless Sensor Networks for Underground Railway Applications: Case studies in Prague and London. Smart Structures and Systems (impact factor 1.2). Odesláno k publikaci. Ferri, M., Mancarella, F., Seshia, A., Ransley, J., Soga, K., Záleský, J., Roncaglia, A.: Fabrication and packaging techniques for the application of MEMS strain sensors to wireless crack monitoring in ageing civil infrastructures. Smart Structures and Systems (impact factor 1.2). Odesláno k publikaci.