03
Apr

Expanded Polystyrene for Road Embankment on Soft Clay

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

ABSTRACT: Instability and  intolerable deformation always be the problems in constructing high embankment over soft/ loose soils. The prime cause of the problems is the load exerted by the self-weight of the embankment fill itself. Therefore, whenever possible, the use of lightweight materials, such as Expanded Polystyrene (EPS) foam, for the embankment fill will certainly be one of the best solution. This technique has been implemented in the Scandinavian countries. Seeing that it may also be implemented in our country, Indonesia, this paper tries to introduce the engineering characteristics of the EPS foam, as obtained from manufacturer, together with its design aspects.

Download full paper:GTL-001-1990_(R) Expanded Polystyrene for Road Embankment on Soft Clay

03
Apr

TUNNELING INDUCED GROUND MOVEMENT AND SOIL STRUCTURE INTERACTIONS

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

ABSTRACT

Tunneling technique is normally a primary option that can’t be avoided in building a Mass Rapid Transport System in a heavily populated metropolitan city. In this case, to avoid any unwanted effect to the surrounding structures and public utilities, the ground movement and the soil structure interaction analysis become important factors to consider. This paper elaborates the author experiences in analyzing such a case, both by employing available empirical formulas and by using a sophisticated finite element analysis.

Download full paper: http://indogeotek.com/2019/04/03/tunneling-induced-ground-movement-and-soil-structure-interactions-2/



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

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