Dr.L.I.N. De Silva

B.Sc. Eng (Moratuwa), M.Eng (Tokyo), Ph.D. (Tokyo)

Senior Lecturer , Department of Civil Engineering,
University of Moratuwa

	Contact Information: Address: Department of Civil Engineering, University of Moratuwa, Moratuwa, Sri Lanka. e mail: nalinds@civil.mrt.ac.lk Telephone: +94-11-2650567-8(Ext.2011 ) Fax: + 94-11-2651216

       Tertiary Qualifications   
       Career Objective
       Career Summery
       Summary Of Skills	 
       Educational Qualifications
       Special Awards
       Research Monographs

       Research Publications in 
        Refereed Journals
       Research Publications in 
        Refereed Conferences/Symposia
       Research Publications in 
        Non-Refereed Conferences/Symposia
       Invited Lectures
       Some Major Consultancy Assignments

Tertiary Qualifications

Ph.D., University of Tokyo , Japan , 2008.
M.Eng., University of Tokyo , Japan, 2004.
B.Sc.Eng. Honours (1 st Class), University of Moratuwa , Sri Lanka , 2002.

Career Objective

To become a recognized Civil Engineering academic in Sri Lanka.

Career Summary

Apr 2009 - todate - Senior Lecturer - Department of Civil Engineering, University of Moratuwa , Sri Lanka.
Oct 2008 - Apr 2009 - Post Doctoral Research Fellow - Institute of Industrial Science, University of Tokyo , Japan.
Jan 2005 - Sep 2005 - Civil Engineer - Access Engineering Ltd.
Sep 2001- Sep 2002 - Temporary Lecturer - University of Moratuwa
Sep 2001- Sep 2002 and Mar 2009 - todate - Visiting Lecturer - Institution of Engineers Sri Lanka.
Sep 2001- Sep 2002 - Visiting Lecturer - General Sir John Kothalawala Defence Academy.

Summary Of Skills

Competent in Visual Fortran programming language
Competent in MS Office, Auto Cad, Origin, Plaxis, Slope/W, Seep/W, Sigma/W softwares
Experience in advanced laboratory testing of soils

Educational Qualifications

Degree / Course	University / Institute	From(mm/yy)- To(mm/yy)
G.C.E A/L (3A's and 1B)	Ananda College	1994
G.C.E O/L (7D's and 1C)	Ananda College	1991

Special Awards

Best paper award at the 10th international summer symposium organized by the Japan Society of Civil Engineers, Tokyo , Japan , 2008.
Mombukagakusho scholarship awarded by the Japanese government to read PhD degree at the University of Tokyo, Japan (2005-2008) (Approx. 61500 US$).
Asian Development Bank (ADB) scholarship to read M.Eng degree at the University of Tokyo, Japan (2002-2004) (Approx. 48000 US$).
Professor C. Patuwathawithana Memorial Award for the engineering graduate who has obtained the highest average of over 70% at the BSc. (Engineering) Final Part III Examination for the academic year 1998/99.
Prabath Kaushalya Saparamadu Merit Award for the best civil engineering graduand in Construction Engineering and Management for the academic year 1998/99.
Mahapola merit scholarship to read BSc degree at University of Moratuwa , Sri Lanka (1996-2001).
Buddhadasa Gunarathne Memorial Scholarship for the achievement at G.C.E. (O/L) examination (1991).

Research Monographs

Deformation Characteristics of Sand Subjected to Cyclic Drained and Undrained Torsional Loadings and Their Modelling', PhD Thesis, University of Tokyo , Japan (2008)
‘Locally measured quasi-elastic deformation properties of geomaterials under torsional shear and triaxial loadings', Master of Engineering thesis, University of Tokyo , Japan (2004).
Optimum Geometric Shapes for Gravity type Retaining Structures', Undergraduate project report, University of Moratuwa (2002)

Research Publications in Refereed Journals

De Silva, L. I. N., Koseki, J., Sato, T. and Wang, L., “High capacity hollow cylinder apparatus with local strain measurements", Geotechnical Special Publication, ASCE, Vol. 156, pp. 16-28 (2005).

Research Publications in Refereed Conferences/Symposia

De Silva, L. I. N., Koseki, J., Sato, T., Kiyota, T. and Honda, T., “Quasi-elastic bulk modulus of sand based on volume change and local deformation measurement of hollow cylindrical specimen", Proc. of the 4th International Symposium on Deformation Characteristics of Geomaterials (IS-Atlanta 2008), USA, pp. 105-111 (2008).
De Silva, L. I. N., Koseki, J., Sato, T., “Effects of different pluviation techniques on deformation property of hollow cylinder sand specimens", Proc. of the International Symposium on Geomechanics and Geotechnics of Particulate Media, Ube, Yamaguchi, Japan, pp. 29-33 (2006).
Kiyota, T., De Silva, L. I. N., Sato, T. and Koseki, J., “Small strain deformation characteristics of granular materials in torsional shear and triaxial tests with local deformation measurements", Soil Stress - Strain Behavior: Measurement, Modeling and Analysis, A collection of Papers of the Geotechnical Symposium in Rome , Series: Solid Mechanics and its Applications, Vol. 146, pp. 557-566 (2006).

Research Publications in Non-Refereed Conferences/Symposia

De Silva, L. I. N., Sato, T. and Koseki, J.,"Modeling of drained cyclic shear behavior of sand", Proc. of the 10th International Summer symposium, JSCE, Tokyo , Japan , pp. 73-76 (2008).
De Silva, L. I. N., Sato, T., Kiyota, T., Honda, T. and Koseki, J., “Use of electronic balance in measurement of small volumetric strain of hollow cylinder sand specimens", Proc. of the 9th International Summer Symposium, JSCE, Yokohama, Japan, pp. 167-170 (2007).
De Silva, L. I. N., Sato, T. and Koseki, J., "Variations of shear strain along height and perimeter of hollow cylinder specimens during cyclic torsional shear loadings", Proc. of the 8th International Summer symposium, JSCE, Nagoya , Japan , pp. 143-146 (2006).
De Silva, L. I. N., Sato, T., Koseki, J. and Wang, L., "Local and external measurement of quasi-elastic deformation properties of dry Toyoura sand in torsional shear and triaxial tests", Proc. of the 6th International Summer Symposium, JSCE, Saitama, Japan, pp. 221-224 (2004).
Koseki, J., De Silva, L. I. N., “Improved modeling of cyclic shear stress-strain relations of sand and its effect on accumulation of volumetric strains (in Japanese)", Proc. of the 43rd Annual Conference of JGS, Japan (2008) (in print).
Koseki, J., De Silva, L. I. N., “Modeling of dilatancy property and simulation of undrained cyclic shear behavior of dense Toyoura sand (in Japanese) ", Proc. of the 63rd Annual Conference of the Japan Society of Civil Engineers, JSCE, Japan, (2008) (to be printed in CD ROM).
Mulmi, S., Nakajima, S., De Silva, L. I. N., and Koseki, J., “Shear stress-strain response analysis of backfill soil of model retaining wall using shaking table", Proc. of the 9th International Summer symposium, JSCE, Yokohama, Japan, pp. 151-154 (2007).
Kulathilaka, S. A. S. and De Silva, L. I. N., “Optimum geometrical shapes for gravity retaining structures", Proceedings of the 97th Annual Session of the Institute of Engineers, Sri Lanka, pp. 101-110 (2003).
Kiyota, T., De Silva, L. I. N., Sato, T. and Koseki, J., “Small deformation characteristics of gravel in torsional shear and triaxial tests with local deformation measurements", Proc. of the 40rth Annual Conference of JGS, Japan , CD-ROM (2005).
Koseki, J., Sato, T. and De Silva, L. I. N., “Improvement of local deformation measurement for hollow cylindrical specimens in torsional shear and triaxial tests", Proc. of the 40rth Annual Conference of JGS, Japan , CD-ROM (2005).

Invited Lectures

“Behavior of Sand Subjected to Large Cyclic Loadings and their Modelling", presented on invitation by Sri Lanka Geotechnical Society at their monthly Geotechnical forum at IESL.

Some Major Consultancy Assignments

Stability analysis work and recommendations to improve natural slopes at Denawaka Ganga mini hydro power project.
Proposals for geotechnical investigations at Kalawana mini hydro power project.
Stability analysis work and recommendations to improve failed slopes at Seethawaka industrial park.
A member of the team investigating the damages caused to the adjacent buildings by piling work at Gateway International school.
A member of the team investigating the failures of soil steel bridges at Southern Transport Development Project.
Proposals for remedial actions to prevent the damages to penstock caused by falling rock at Asupini Alla mini hydro power project.
Proposals for geotechnical investigations at Wewa Ganga mini hydro power project.
A member of the team investigating the damages caused due to excessive settlement at Narah Building , Welisara. .