isafe2013 - wet speed mixing by zhao yang geotechnic pte ltd
DESCRIPTION
Wet Speed Piling SystemTRANSCRIPT
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朝陽土地工程私人有限公司ZHAO YANG GEOTECHNIC PTE LTDHead Office : Zhao Yang Geotechnic Pte LtdNo. 31 Mandai Estate #02-01, Innovation Place,Singapore 729933 Tel: (65) 6861 8488 Fax: (65) 6898 4160
Website : www.zhaoyang.com.sgEmail : [email protected]
Branch Office : Zhao Yang Geotechnic Sdn BhdNo.63A, Jalan Molek 3/10, Taman Molek Johor Bahru 81100, Johor.Tel/Fax:+607 3513364
Malaysia Office : Zhao Yang Geotechnic Sdn BhdSuite 05 – 02, 5th Floor, Wisma TKS,No. 518A 3rd Mile, Jalan Ipoh ,51200 Kuala LumpurTel: +603 4040 3133
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31
Ground improvement Works:
• Wet Speed Mixing (WSM)• Deep Soil Mixing (DSM)• High Pressure Jet Grouting • Tube A Manchetta (TAM) grouting• GeoPier System (impact pier /
Grouted impact pier)• Vibro Stone Columns• Vibro Concrete Columns (VCC)
• Rock Fissure Grouting• Chemical / Permeation
Grouting• Cavity grouting• Secant Soil Mix Pile Wall• Bored Pile Base Grouting• Compaction grouting
Geotechnical Engineering Works:
• Bored Micro piling (Size:150-500mm dia.)• Removal Temporary / Permanent Ground
Anchor ( WL=20ton – 150ton)• Toe Pin for D-wall & Bored Pile • Soil Nailing / Rock Bolting• Bored Piling / CBP Wall • VDW Secant Pile Wall
• Design & Built For (ERSS)• Soil Investigation • Steel / Micro Pile extraction • Pre- drill & Drive Sheet Pile / Soldier Piles/Steel Plate lagging• Recharge & relief well • Slope Repair Technology (SRT)
Geopier System Fissure Rock Grouting ERSS-Exposed Grout Pile Wall
WSM Works in Progress
Temporary Removal Ground Anchor
Exposed Secant Soil Mix Pile (WSM Technique)
Grouted Impact Pier
TAM Grouting
Jet Grouting
Bored Micropile Soil Nail & Gird RC Beam
Soil Nail/Rock bolt & shotcrete Work
Double Head System (VDW)Secant Soil Mix Pile Wall Driving Steel Plate/Sheet / Soldier Pile
Bored Piling
Soil Investigation
ZHAO YANG GEOTECHNIC PTE LTD - Provides ONE-STOP SOLUTION FOR GROUND IMPROVEMENT &
GEOTECHNICAL ENGINEERING WORKS
ZHAO YANG GEOTECHNIC PTE LTD - Provides ONE-STOP SOLUTION FOR GROUND IMPROVEMENT &
GEOTECHNICAL ENGINEERING WORKS
Pre-Drilling Sheet Pile
Email : [email protected]
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Alternative Piling System using WSM technique
to install Secant Soil Mix Piles Wall.
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Installation of Secant Soil Mix Piles Wall Using
WET SPEED MIXING ( WSM ) Technique• What is WSM Technique? WSM Technique use combination of jet grouting & Mechanical Mixing Blades to mix
the soil. Proven technique able to treat most types of soil in singapore ranging from very Soft
marine clay, Peaty clay, F1, F2 , silty sand, clayey sand , Coarse sand and Bukit Timah granite Soil GV & GVI until SPT “N” value < 100N, except rock & obstruction.
Use High Revolution ( RPM : 40 ~ 90 ) for Soil mixing Assured quality with uniform mixing and consistent diameter ( ranging from 0.6m to
2.6m ). Ground Improvement Min. Shear strength (Cu) = 300Kpa to 1500Kpa Proven deepest treatment depth 48m. Environmentally friendly. Low noise and vibration free High Productivity and use less manpower Cost effective
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Sequence of InstallationSet up Guide Wall & WSM installation in Progress
Installation of I –Beam immediately upon completion of WSM
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TYPE (1) WSM (WITHOUT SIDE NOZZLES JETTING)
Ground Level
Rock Layer
Sand Layer
Marine Clay Layer
F1, F2, Bukit Timah GV,GVi layer, SPT N
value < 100
Step 1:Position the ABI rig on the WSM peg point
Step 2 :Drilling and mixing of WSM column in the ground with cement
Step 3 :Withdraw the WSM rod and mixing monitor to complete the grouting
Step 4 :Completed WSM point
Step 5 :Install I-Beam to required depth
I-Beam
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Rock Layer
Step 1:Position the drill rig on the WSM peg point
Step 2 :Drilling and mixing WSM column in the ground with cement
Step 3 :Withdraw the WSM rod and mixing monitor to complete the grouting
Step 4 :Completed WSM point
Sand Layer
Marine Clay Layer
F1, F2, Bukit Timah GV,GIV
layer, SPT N value < 100N
Ground Level
Jetting
TYPE (2) WSM (WITH SIDE NOZZLES JETTING )))
Jetting
I-Beam
Step 5 :Install I-Beam to required depth
Jetting
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Advantage of using WSM Method for ‐ERSS
Proven WSM Free Standing Wall for One Basement construction
Part One
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Earth retaining structure system (ERSS ) ( One Basement Construction )
Before trimming Secant Soil mix Piles. ( FREE standing wall 3.5m ~ 4.0m height)
After trimming Secant Soil Mix Piles.
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Earth retaining structure system (ERSS ) ( One Basement Construction )
After trimming Secant Soil Mix piles
Cast‐in situ Permanent retaining wall with Secant Soil Mix Piles.
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Earth retaining structure system (ERSS ) ( One Basement Construction )
Free Standing Wall using WSM technique ( reclaim sand & marine clay layers )
Free Standing Wall using WSM technique ( reclaim sand & marine Clay layers )
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Earth retaining structure system (ERSS ) ( One Basement Construction )
Free Standing Wall using WSM technique ( Bukit Timah Granite GV & GVI Soil )
Free Standing Wall using WSM technique ( Bukit Timah Granite GV & GVI Soil )
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Advantage using WSM Method for –ERSS
• TOP DOWN BASEMENT CONSTRUCTION METHOD USING SECANT SOIL MIX PILE WALL SYSTEM
( PART TWO )
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Wet Speed Mixing (WSM) Technique
Guide wall for secant soil mix piles installation
Soil Mixing in Progress
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Wet Speed Mixing (WSM) Technique
Installation of H‐pile immediately after completion of wsm
Preparation of capping beam slab for top down construction
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Earth retaining structure system (ERSS ) ( Two Basement Construction )
Secant soil mix Piles wall before trimming
Secant soil mix piles wall after trimming at basement level one
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Earth retaining structure system (ERSS ) ( Two Basement Construction )
Basement level one Opening at level one
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Earth retaining structure system (ERSS ) ( Two Basement Construction )
Top down construction Basement level one slab cast
Exposed WSM ground improvement at basement level two
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Earth retaining structure system (ERSS ) ( Two Basement Construction )
Trimmed secant soil mix wall at basement level two
Trimmed and exposed I ‐beam at basement level two
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Earth retaining structure system (ERSS ) ( Max. excavation depth : 14 to 18m for Basement Construction )
Secant Soil Mix Pile Wall with multi layers strut ( DTL 1 ‐ C906 )
Conner Secant Soil Mix Piles Wall with multi layers strut ( DTL 1 ‐ C906 )
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Earth retaining structure system (ERSS ) ( Max. excavation depth : 12m for Basement Construction )
DTL 1 C907 ( ERSS Wall above existing MRT NSL tunnel )
DTL 1 C907 ( ERSS Wall above existing MRT NSL tunnel )
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Entrance Shaft Construction Beside old Shop house
Oval Shaft Construction using Secant Soil Mix Pile Wall
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• Real time Monitoring – Data Logger attached.
DATA LOGGER WSM
Drilling Depth Rotation Speed
Grout VolumeFor every meterdepth
Grout Pressure
Grout Flow rate
Grout Period (min)
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Before Test After Test
SAMPLE TESTING FOR WSM
Result of coring sample testing
Report No Coring Point No Cast Date Coring Date Lab Test Date Sample NoTCR % Unconfined Comp.
Strength, qu (kPa)Elastic Modulus,
E (Mpa)
≥ 85 ≥ 1000 ≥ 150
1 C139 23/10/2012 4/1/2013 7/1/2013CR‐1
1005738 1017
CR‐2 4703 400CR‐3 2629 436
2 C113 24/10/2012 8/1/2013 12/1/2013CR‐1
943383 680
CR‐2 1059 608CR‐3 4439 548
3 C76 29/10/2012 10/1/2013 12/1/2013CR‐1
995520 717
CR‐2 6163 1225CR‐3 5745 1131
4 C53 1/11/2012 15/1/2013 19/1/2013CR‐1
963341 418
CR‐2 4397 605CR‐3 4472 350
5 C34 31/10/2012 17/1/2013 19/1/2013CR‐1
954458 450
CR‐2 2433 487CR‐3 3178 421
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Proven Projects Track Record – Using Wet Speed Mixing
(WSM) Technique in SINGAPORE
朝陽土地工程私人有限公司ZHAO YANG GEOTECHNIC PTE LTD
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PROJECT WORK SCOPE MAIN CONTRACTOR
DTL 1 – C 902 Ground Improvement Work using WSM (TBM Launching Shaft) Shanghai Tunnel Engineering Pte Ltd
DTL 1 – C 906 Secant Soil Mix Pile Wall using WSM Sembawang E & C Pte Ltd
DTL 1 – C 907 Secant Soil Mix Pile Wall using WSM Taisei Corporation
DTL 2 – C 916 Ground Improvement Work using WSM(TBM Launching & arrival Shaft)
McConell Dowell SEA
DTL 2 – C 917 Ground Improvement Work using WSM ( TBM Launching & Arrival Shaft)
Alpine Bau GMbh
DTL 2 – C 918 Ground Improvement Work using WSM ( Cut & Cover tunnel & TBM launch & arrival Shaft)
Alpine Bau GMbh
DTL 2 – C 919 Ground Improvement Work using WSM (TBM Launching Shaft) Sembawang E & C Pte Ltd
DTL 2 – C 921 Ground Improvement Work using WSM ( Entrance Shaft ) Ssangyong E & C Pte Ltd
DTL 3 – C 927 Ground Improvement Work using WSM (TBM Launching & arrival Shaft)
CMC Ravenna
DTL 3 – C 932 Ground Improvement Work using WSM ( Escape Shaft and TBM Launching & arrival Shaft)
Sato Kogyo (S) Pte Ltd
DTL 3 – C 935 Ground Improvement Work using WSM ( Station, Entrances & TBM Launch Shaft )
Leighton-John Holland JV
MCE – C 482 Ground Improvement Work using WSM ( Cut & Cover tunnel & Pipe Piles Gap Sealing )
Ssangyong E & C Pte Ltd
MCE – C 483 Ground Improvement Work using WSM ( Pipe jacking shaft ) Samsung C & T Corporation
MCE – C 487 Ground Improvement Work using WSM ( Cut & Cover Tunnel ) Daelim Industrial Co. Ltd
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PROJECT WORK SCOPE MAIN CONTRACTOR OWNER
Punggol Waterway (Part 1)
Ground Improvement works ( GIW ) -using WSM
KOH Brothers C & E HDB
Punggol East Contract 39 GIW - using WSM for Driveway Sunhuan Construction PL HDB
Punggol East Contract 40 GIW - using WSM for Driveway & Promenade
Sunhuan Construction PL HDB
Punggol East Contract 41 GIW - using WSM for Driveway Sunhuan Construction PL HDB
Kallang Whampoa Contract 20CPunggol East Contract 36
GIW - using WSM for Driveway
GIW - Using WSM for Driveway
Sembawang E & C PL
Sunhuan Construction PL
HDB
HDB
Jardin Condominium Secant Soil Mix Pile Wall using WSM Rich Construction PL Private
No. 2 & 4 East Coast Avenue
Secant Soil Mix Pile Wall using WSM Expand Construction PL Private
The Cape No. 25 Amber Road
Secant Soil Mix Pile Wall and Basement GIW - using WSM
Rich Construction PL Private
CMC No. 597 East Coast Road
Ground Improvement Work using WSM Daiya Engineering & Construction PL
Private
Lorong 33 Geylang Basement GIW - using WSM Admin Construction PL Private
Centropod at 80 Changi Road
Basement GIW - using WSM Lim Wen Heng Construction PL Private
Natura @ Hillview Secant Soil Mix Pile Wall using WSM Lim Wen Heng Construction PL Private
NUS Project Secant Soil Mix Pile using WSM Expand Construction PL Private
HDB @ Sembawang Rd N5C18
Secant Soil Mix Pile using WSM Yau Le Construction (S) Pte Ltd HDB
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THANK YOU