新加坡環(huán)線地鐵工程的設(shè)計施工技術(shù)與坍塌應急處理方案講座(1)

1、 GIA Engineers (S) Pte LtdEngineering Overview of MRT Circle Line Projects In Singapore Dr. Zhang Q.H. Oct 2006, China, NanningPossible Topics for Today1. General Overview of MRT CCL projects in Singapore2. Engineering Challenges and Main Construction Method 3. Design Code and Software used for MRT

2、projects4. Technical Brief of Incident Nicoll HighWay 5. SGP MRT Protection Code and Instrumentation Work. GIA EngineersMRT Circle Line in Singapreu The CCL (Circle line) will be 33.3 km long with 29 stations. u Costing $6.7 billion.u A fully underground orbital line will interchange with North-Sout

3、h Line, East-West Line and North East Line.u The project will be in five stages and to complete in 2010. GIA EngineersCircle Line 1 to 5 mapGIA EngineersBenefits and ChallengesBenefits - Using the CCL, will be able to bypass the busy major interchanges.Challenges -uTraffic diversions.uSoft soil cond

4、itions at the Millenia and Nicoll Highway stations.uBoring tunnels under the Kallang Basin. uInterface of tunnels with proposed KPE, DTSS tunnels Upper Paya Lebar/ Airport Road.GIA Engineers$1.39b; 5.4km; 6 Stations; Starting March 2002GIA EngineersCircle Line 1 $1.55b; 5.6km; 5 Stations; Starting A

5、ugust 2002GIA EngineersCircle Line 2 $1.2b; 5.7km; 5 Stations; Starting Oct. 2003GIA EngineersCircle Line 3 $2.5b; 17km; 13 Stations; Starting Oct. 2004GIA EngineersCircle Line 4 &5 1$2.5b; 17km; 13 Stations; Starting Oct. 2004GIA EngineersCircle Line 4 &5 2Construction Method uTop-down Cons

6、truction - Dhoby Ghaut, Museum, Convention Centre, Millenia, Nicoll Highway, Lorong Chuan and Holland stations.uConstruction of Secant Pile Wall.uConstruction of Contiguous Bored Pile Wall.uConstruction of Diaphram WalluConstruction of Sheet Pile WallGIA EngineersTop Down ConstructionGIA EngineersTo

7、p Down & Diaphram Wall GIA EngineersStrutSlabStrutStrutOpeningDeckingContiguous Bored Pile WallGIA EngineersStruttingSlabSecant Pile Wall GIA EngineersStruttingSlabSheet Pile Wall StruttingSlabGIA EngineersDesign Code & SoftwareBased on British Code. uBS5950 &CP65 Structural Use of Steel

8、work in BuildinguBS8004 FoundationuBS 8002 Earth Retaining StructureuBS 8110 PT The Structure Use of ConcreteuBS6399 PT Design Loading for BuildingCommon Used Geotechnical SoftwareuPlaxis, Excave97, Wallap, RIDO and Slope/W GIA EngineersGeotechnical Software - Plaxisu 2D &3D FEM software for Soi

9、l and Rock.u Developed in 1987 by Technical University of Delft.u Used by 30 over European Country for more than 20 years.GIA EngineersMRT Protection Code 1of 3 GIA EngineersMRT Protection Code 2of 3 GIA EngineersMRT Protection Code 3 of 3Allowable Engineering Parameter:uStructure/track Movement in

10、any Plane -15mm uDifferential movement /Twist 3mm in 6m (1:2000)uPeak Particle Velocities (Vibration) 15mm/secuChange in Pore Water Pressure 10KN/m2GIA EngineersIncident Nicoll Highway CCL Stage 1 - C824 (1 of 8)GIA EngineersIncident:u On 20 of April about 3:30pm u Cut and Cover Tunnel Sectionu 9th

11、layer strutting (9 of 10), excavation depth 30mu First layer of JPG was excavated.u 100m Temporary D-wall collapse; u Collapsed Area = 100m x130m of Nicoll Highwayu 4 Fatalitiesu Affected nearby structure: Overhead Bridge, Canal, Golden Mile towerIncident Nicoll Highway CCL Stage 1 - C824 (2 of 8)GI

12、A EngineersProject OverviewuDesign & Build. 1.6Km C&C Tunnel, 800m Bored Tunnel, BLV station.uTem. D-wall with “ bottom up” methoduExcavation: With = 19.8m, Depth = 33.5muSupporting : D-Wall Thx=800m, Depth =38 to 40 m deep, 10 layer struts u2 layer Jet Grouting, 1st 1.5m 28m, 2nd 3mformatio

13、n levelGIA EngineersIncident Nicoll Highway (3 OF 8)RecoveryGIA EngineersIncident Nicoll Highway (4 OF 8)RecoveryGIA EngineersIncident Nicoll Highway (5 OF 8)RecoveryGIA EngineersIncident Nicoll Highway (6 OF 8)RecoveryGIA EngineersIncident Nicoll Highway (7 OF 8)RecoveryGIA EngineersIncident Nicoll

14、 Highway (8 OF 8)RecoveryReal Time Instrumentation CCL MRT ProjectuStrutting Monitoring System VWSG and Load CelluStructure Monitoring EL Sensor, VW Cracking, VibrationuGround Monitoring In Place Inclinometer, Piezometer Rod ExtensometeruMRT Structure Monitoring ATM Survey, Vibration, EL track Monit

15、oringuEnvironmental Monitoring Corrosion & VWSG GIA EngineerMonitoring ResultsThe monitoring results consist of ground, structural and environmental monitoring results. All results presented in the real time display and report includes:uHorizontal, vertical and lateral deformationsuPore pressure

16、 changes / Water level changeuRotational tilting of structuresuVibration and Noise levelSOIL & FOUNDATION PTE LTDInstrumentation Database ServerWeb ServerReal Time Data VisualizationGround InstrumentStructural InstrumentEnvironmental MonitoringAutomated Survey SystemAcquisition Logging SystemNet

17、work PrinterGSM ModemGSM ModemAlarm messages sent by emailsAlarm messages on mobile phone or pagersGW Web ClientsService Network Management SystemFirewallAlarm messages sent by emailsAlarm messages on mobile phone or pagersAllow Client to View / Download Data, Report and Method Statement AnytimeAcqu

18、isition Logging SystemAcquisition Data SystemAcquisition Logging SystemReal Time Monitoring SystemGIA EngineersGround Monitoring SystemInclinometerVibrating Wire PiezometerBorehole Rod ExtensometerVW Settlement CellAlarm messages sent by emailsAlarm messages on mobile phone or pagersAlarm Alert Syst

19、emAcquisition Logging SystemReal Time VisualizationGIA EngineersStructure Monitoring SystemEL Beam SensorVibrating Wire Crack MeterVibrating Wire Strain GaugeAlarm messages sent by emailsAlarm messages on mobile phone or pagersAlarm Alert SystemAcquisition Logging SystemVibrating Wire Strain Gauge (

20、Concrete)Real Time VisualizationEL Tilt SensorGIA EngineersCorrosion Monitoring SystemCorrosion SensorAlarm messages sent by emailsAlarm messages on mobile phone or pagersAlarm Alert SystemReal Time VisualizationCorrosion SensorCorrosion SensorCorrosion SensorAcquisition Logging SystemVibration Moni

21、toring SystemVibration MonitorAlarm messages sent by emailsAlarm messages on mobile phone or pagersAlarm Alert SystemVibration MonitorVibration MonitorVibration MonitorReal Time VisualizationGIA EngineersAutomated Survey Monitoring SystemAlarm messages sent by emailsAlarm messages on mobile phone or

22、 pagersAlarm Alert SystemAcquisition Data SystemReal Time Data VisualizationTarget (Prisms)Target (Prisms)Target (Prisms)Radio / Cable NetworkRadio / Cable NetworkGIA EngineersProject PicturesGIA EngineersPictures of CCL Line -1GIA EngineersPictures of CCL Line -2GIA EngineersPictures of CCL Line -3GIA EngineersPictures of CCL Line -4GIA EngineersPictures of CCL Line -5GIA EngineersPictures of CCL Line -6GIA EngineersPictures of CCL Line -7GIA En