Specialist in Design, Supervision/Execution of:

Dewatering,Pumping Test,PDA-PIT-Sonic Logging-Vibration Monitoring,
Pile/Plate Load Test,Soil Instrumentation,Soil Nailing,MicroPile,Grouting
Deep Foundation,Deep Excavation,Slope Stability,Ground Improvements
Geosynthetics & Other Geotechnical Works
Agent of Geotechnical Softwares:
PLAXIS, GEO5, Deltares, DC Software, RocScience, GeoSmart, NovoTech, etc.

GOUW Tjie-Liong Ir., M.Eng., ChFC

  • Senior Geotechnical Consultant
  • Chartered Financial Consultant, ChFC
  • Senior Geotechnical Engineering Lecturer/Trainer
  • Provider of Geotechnical Short Course / Training
GTL Brief Profile
24
Jul

A Geotechnical Short Course on Ground Improvement

Written by Gouw Tjie Liong. Posted in Course, NEXT Courses

Jakarta, 1-3 September 2015

Covering theoretical design calculation,execution, monitoring and interpretation. Practice design and data interpretation session shall be given.

  1. PRECOMPRESSION With VERTICAL DRAINS: Basic Principles, Type of Vertical Drains, Application, Design Method and Calculation, Installation, Instrumentation, Monitoring, Interpretation, Asaoka Method, and Case Histories.
  2. VACUUM PRELOADING: Surcharging vs Vacuum Method; Execution; Monitoring System; Improved Ground; Application Examples and Case Histories (with projects in Indonesia and Vietnam)
  3. Liquefaction potential analysis:What is Liquefaction; Liquefaction Phenomenon; Liquefaction induced Damages; Identifying Liquefaction Potential; Cyclic Stress Ratio – CSR; Assessing Liquefaction through SPT data; Assessing Liquefaction Potential through CPT data; Liquefaction of Deeper Layer; Calculation Examples. Analysis of Liquefaction potential by using Novo Liquefaction software shall be given.
  4. DYNAMIC COMPACTION: Equipment, Mechanism, Execution procedure, Design Guidlines and Case Histories.
  5. VIBROCOMPACTION – VIBROFLOATATION – STONE COLUMNS: Vibro Compaction Mechanism, Dry Process, Wet Process, Vibroflotation, Vibrocat, Stone Columns, Design Guidelines, Case Histories.
  6. JET GROUTING: Various Grouting Techniques, Equipment, Execution, Formation, Cementand Composition, Application of Jet Grouting.

for detail information click: 2015-09-010203 – Course Ground Improvement

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17
Jul

Kinerja Jangka Panjang Angkur Tanah dan Pengaruhnya Terhadap Stabilitas Dinding Diaphrgama – Sebuah Studi Kasus

Written by Gouw Tjie Liong. Posted in GTL Paper, Publication

Abstrak: Krisis ekonomi berkepanjangan semenjak akhir 1997 mengakibatkan banyak proyek yang terbengkalai cukup lama, diantaranya adalah galian basement yang ditinggalkan begitu saja. Makalah ini membahas salah satu proyek dengan galian basement yang sudah diselesaikan hingga kedalaman final antara 14-16.5m dari muka tanah asli. Sistem dinding penahan tanah yang digunakan adalah dinding diaphragma dengan tiga dan empat lapis angkur tanah. Saat krisis ekonomi melanda, kegiatan proyek dihentikan total, dewatering air tanah tidak lagi dilakukan, hanya pemompaan air permukaan saja yang dilakukan, itupun dengan intensitas yang sangat kurang. Galian dibiarkan terbuka selama lebih dari 6 tahun. Pertengahan Juni tahun 2003, dilakukan pengukuran-pengukuran, diantaranya: defleksi dinidng penahan tanah, gaya-gaya yang bekerja pada angkur tanah. Pengukuran ini diikuti dengan evaluasi terhadap kinerja angkur tanah dan keamanan dinding diaphragma. Diketahui bahwa angkur tanah mengalami kehilangan gaya-gaya yang cukup signifikan, yang bila dibiarkan akan dapat mempengaruhi keamanan dinding diaphragma. Disimpulkan bahwa diperlukan konstruksi berm untuk menambah kesatabilan dinding diaphragma sebagai tindakan preventif.

Download full paper: GTL-J03-2004-HATTI-Kinerja Jangka Panjang Angkur Tanah

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03
Jun

A Geotechnical short course on Slope Stability, Lateral Earth Pressure and Deep Excavation with application of Geo5 softwares

Written by Gouw Tjie Liong. Posted in Course, Past Courses

Jakarta, 24-26 June 2015

Background:

In our practice as geotechnical and civil engineers we are often faced with excessive slope movement and even slope failures; excessive ground movement and failure of deep excavations, be an open cut or supported excavation, is also one of the construction problems we often encountered. Those failures are often caused by lack of adequate geotechnical design knowledge and construction processes. This short course is designed for consulting engineers, contractor, and academican to enhance their knowlege and skill in appreciating important factors affecting the stability of slopes and deep excavations so as to design and execute deep excavation projects safely. Case studies of slope and deep excavation failures shall be presented and discussed. The participants shall have chances to learn how to model a proper slope stability and deeep excavtion analysis by using GEO5 softwares.

Course Topics:

The course shall be conducted by refreshing the basic relevant geotechnical theory, followed by the in depth discussion of geotechnical engineering knowledge and how to implement those knowledge into practice. The course shall cover the following subjects:

 

  1. SLOPE STABILITY ANALYSIS: Examples of slope failures; Factors affecting slope stability; Slope types; Infinite slope; Planar Failure; Slip Circle Analysis; Fellenius, Bishop Method and Others; Geosynthetics Reinforced Slopes; Earthquake effects. Case studies by using GEO5 Software.
  2. LATERAL EARTH PRESSURES: Various earth retaining structures; Lateral earth pressures and their coefficients; Earth pressure at rest; Rankine, Coulob, Caquot Kerisel lateral earth pressure theories; Load induced lateral earth pressures. Calculation of lateral earth pressures by GEO5 Software
  3. DEEP EXCAVATION: Execution of deep excavation and Its supporting structures covering Soldier Piles, Secant Pile and Diaphragm walls; Ground Anchors, Quality control; Examples of deep excavation failures; Causes of the failures, followed by discussion on the designing and monitoring aspects. Case studies in desingning deep excavation project by GEO5 Softwares.

For detail see: 2015-06-24-25-26-Course on Slope-EarthPressure-DeepExcavation

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Geotechnical Course

  • Soil Mechanis
  • Soil Investigation
  • Foundation Engineering
  • PIT, PDA, Sonic Logging
  • Slope Stabilization
  • Geotechnical Instrumentation
  • Deep Excavation
  • Ground Improvement
  • Geotechnical Instrumentation
  • Earthquake
  • Liquefaction Analysis
  • Application of Geotechnical Software
  • Other Geotechnical Course

Learn more

Motivational Course

  • Cultivating Engineering Judgment
  • The Problem of Engineer
  • How I Present Myself
  • Light Up
  • Toward Successful Engineering Career
  • Pressure lead to Success
  • The Up and Down of My Life
  • Theory of Emptiness
  • Turning Thought into Reality
  • Young Engineer