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.

Dr. 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
16
Sep

Common Mistakes in Designing MSE Wall with Finite Element Method

Written by Gouw Tjie Liong, Ir., M.Eng, ChFC, PhD. Posted in Geotechnic, GTL Paper, Publication, Technical Paper & Presentation (Others)

Abstract:  Fast computer processors have made complicated engineering computation techniques, such as finite element method, that was once require hours and hours of computing time, has now been made possible to run all the computation in less than an hour. Since the early 2000s, the availability of commercial geotechnical finite element software combined with faster, smaller, and cheaper notebook computer has made finite element method more accessible to many engineers. However, it is very often the engineers learn just how to operate the software through the tutorial manual without really understand the underlying geotechnical engineering knowledge, they do not realize the old saying: “Garbage in garbage out”. This paper, albeit may not complete, tries to elaborate the common mistakes found in applying the finite element geotechnical software in designing geosynthetics mechanically stabilized earth wall. It does not consider the construction process of the reinforced soil wall where the fill is being built up, during which most of the geogrid strain is developed.

Download full paper: GTL-2018-11th ISG-Seoul-FEMonMSEDesign-S11-07

08
Aug

Third Indonesian Plaxis User Meeting – 8 Aug 2018

Written by Gouw Tjie Liong, Ir., M.Eng, ChFC, PhD. Posted in Contents

The 3rd Indonesian Plaxis User meeting
Jakarta, August 8, 2018.

The presentation files can be downloaded here:  PUM2018s-GTL-compiled PUM2018s – MIKE

 

25
Jul

Pile Load Test Frequently Asked Questions

Written by Gouw Tjie Liong, Ir., M.Eng, ChFC, PhD. Posted in GTL Paper, Publication

There are a few available methods to obtain load-settlement curve of a pile. Likewise, there are many methods to determine the ultimate pile capacity from a load-settlement curves. Although pile load tests have been widely used over the past decades, there are still many questions regarding its practice and interpretation. Frequently asked questions include: when does a pile test considered to have failed? From an economic point of view, a failure in pile load test can cost quite a lot of money. To what load can the pile be loaded till it is considered to have failed? Can a pile loaded to failure still be used as a working pile? Is pile driving analyzer (PDA) test reliable? Can PDA test replace static load test? Is it necessary to calibrate PDA test results with static load test results? Why is PDA test result interpreted as 1 dimensional wave and not 3 dimensional? What is bidirectional pile load test (also known as O’cell)? When should O’cell be used? Can a pile tested with O’cell be used as a working pile? What are the differences between kentledge load test, static load test with reaction piles and bidirectional pile load test? Do the three different pile tests produce the same results? This paper aims to shed light on these questions.

Keywords: Pile static load test, Dynamic load test, Bidirectional test, Ultimate pile capacity, Fail Pile

Full paper download: Gouw-180617-Pile Load Test FAQ-published

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

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Motivational Course

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  • The Problem of Engineer
  • How I Present Myself
  • Light Up
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  • Pressure lead to Success
  • The Up and Down of My Life
  • Theory of Emptiness
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