Abstract
"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.Cover DescriptionCover images show a schematic diagram of a Pumped-Storage Hydroelectricity (PSH) facility and one of the promising sites for PSH in Sri Lanka. The latter image was obtained from the publicly available JICA report on “Development Planning on Optimal Power Generation for Peak Demand in Sri Lanka”. The Institution of Engineers, Sri Lanka acknowledges JICA for the image.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.
Highlights
Some major proposed infrastructure developments are planned over weak sub-soil areas in the South Asian region
The analysis indicates that the Modified Cam Clay (MCC) model can be used for very soft soils
There is no significant difference between settlement graphs for case 3 and case 4 (Figure 3); this indicates that the geotextile does not influence the settlements significantly, and the stresses in the geotextile are not discussed here
Summary
Some major proposed infrastructure developments are planned over weak sub-soil areas in the South Asian region. The Colombo Katunayaka Expressway (CKE) is one such project, passing over weak peaty soils. In this project, test embankments were constructed with a series of stage loading planned to ensure that no failures occur. The prediction by analytical means of the behaviour of the soft peaty soil in a large area is difficult due to the complex geometries and non-linear material behaviours involved. (Moratuwa)., C.Eng., M1E (SL)., it t Professor at the Department of Civil Engineering and Head of t/it Department of Earth Resources Engineering, University o/MoratutM, Sri Lanka. Instead of depending on a large number of mpirical constants, Cam Clay model has only a few well-known soil parameters
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