A Geotechnical short course on Slope Stability, Lateral Earth Pressure and Deep Excavation with application of Geo5 softwares
Jakarta, 24-26 June 2015
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.
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:
- 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.
- 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
- 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
Someone have modeled a pile for lateral loading in PLAXIS 2D software
he asked: In the output file, one table we can check for the results.
Could anyone please tell me what is meant by Nmin,Qmin,Mmax ?
Answer: Old version of Plaxis 2D definitely CANNOT be used to model the laterally loaded pile. In the newest version there is a pile element. But even with this element provided, it is not for calculation of laterally loaded pile. It is a 3D problem, analysis sholud be done in Plaxis 3D.
Q, N, M refers to shear, normal (axial) and moment.
A graduate student from Texas A&M University asked:
I’m currently working on a project related to Rail Embankments. How a repetitive/ cycling loading can be simulated in a typical FEM model (I’m using PLAXIS 2D) considering the effect of fatigue.
Use HS small soil model, cyclic loading can then be simulated by choosing dynamic analysis and the loading vs time can be created by making a text file first in Notepad (left column is time, right column is magnitude of loading).