Professor S A S Kulathilaka

BSc Eng Hons (Moratuwa), PhD (Monash), CEng, MIE (SL)

Professor 
Department of Civil Engineering, 
University of Moratuwa

Moratuwa.

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Contact Information: 

Address:
Department of Civil Engineering,
University of Moratuwa,
Moratuwa, Sri Lanka.

E-mail:   sas@civil.mrt.ac.lk
Telephone: +94-11-2650567-8(Ext.2003
)
Fax : +94-11-2651216



       Profile

       Qualifications

       Specialized Training	 

       Academic Awards

       Research Interests

       Career Progression

       Publications and Presentations

       Professional Involvements

Qualifications
  Academic Qualifications
  • Ph.D. (Geotechnical Engineering) - Monash University, Australia, 1991.

  • B.Sc. Engineering (Hons.) ‑ University of Moratuwa, Sri Lanka, 1981.

  • Chartered Engineer and Corporate Member of Institution of Engineers.

Other Affiliations
  • Member - Sri Lankan Geotechnical Society

  • Member - International Society of Soil Mechanics and Geotechnical Engineering

  Other Positions         
  • Editor  - Sri Lankan Geotechnical Society (2005 April to date)

  • Hony. Secretary - Sri Lankan Geotechnical Society (1994- Oct 2004)

 

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Academic Experience
  • July 1981 to April 1991   -   Assistant Lecturer, Department of Civil Engineering.

  • April 1991 to April 1997 -    Senior Lecturer Grade II, Department of Civil Engineering.

  • April 1997 to date           -    Senior Lecturer Grade I, Department of Civil Engineering.

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Research Experience

April 1991 to date -  University of Moratuwa, Department of Civil Engineering

General Research Areas

·        Internally Stabilized Earth Retaining Structures

·        Finite Element Analysis of Earth Retaining Structures

·        Slope Stability Analysis and Stabilization of Slopes

·        Ground Improvement Techniques

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Specific Research Projects Undertaken / Completed

·        Study of Anchored Tyre Earth Retaining Structures

·        Design of Reinforced Earth Structures with  Bamboos

·        Improvement of  Engineering  Properties  of Peaty Clays by Pre-consolidation

·        Field Monitoring of Preloading

·        Improvement of Engineering Properties of Peaty Clays by Mixing with Lime and  Cement.

·        Slope Stability Analysis by Non-circular Methods

·        Use of Soil Nailing Techniques to Stabilize Slopes in Sri  Lanka

·        Consolidation Behaviour of Layered Soil Deposits

·        Application of Probabilistic Concepts in Slope Engineering

·        Use of Electro-osmosis Technique to Improve Engineering Properties of Peaty Clay

·        Use of  Lightweight Fill Materials in Constructions on Soft Soils

·        Application of Bio-Engineering Techniques in Stabilization of Slopes

·        Electro Osmotic Consolidation of Peaty Clays with Electro kinetic Geosynthetics

 

March 1984 to Sep 1990 -  Monash University, Department of Civil Engineering

Ph.D. (Monash University - Australia) in Geotechnical Engineering in 1990

Title  :  Finite Element Analysis of Earth Retaining Structures

Ph.D. research is on Finite Element Analysis of Earth Retaining Structures. The following aspects of the retaining wall behaviour have been investigated.

·        Experimental Investigations on Wall Soil Interface

·        Finite Element Analysis of Backfilled Walls with Simulation  of Compaction

·        Finite Element Analysis of Embedded Retaining Walls

·        Finite Element Seepage Analysis

·        Nodal Displacement Method

Teaching Experience
  April 1991 to date  -  Senior Lecturer  :  University of Moratuwa, Sri Lanka 
 

Undergraduate Teaching

·        Lecturing on Geotechnical Engineering to B.Sc. Engineering final year and third year students. 

·        Lecturing on Aerial Photogrammetry and Remote Sensing to third year students.

·        Supervising final year undergraduate research projects.

·        Conducting laboratory classes in Geotechnical Engineering for third year students.

·        Conducting Geotechnical Engineering Design classes for third year and final year students.

 

Postgraduate Teaching and Research

·       Supervision of MSc and M Eng Research Projects

·       M. Eng / P. G. Diploma in Geotechnical Engineering

         Lecturing in the Subjects:                      

  • Earth Retaining  Systems

  • Slope  Engineering

  • Ground Improvement Techniques

  • Computer Applications in Foundations and Earth Retaining Systems

·        M.Eng / P.G. Diploma in  Highway and Traffic  Engineering

                      Lecturing in the Subject   Geotechnics  in Transport                          

·      M.Eng / P.G. Diploma in  Structural  Engineering Design

Lecturing in Foundation Engineering Under the Subject Design of   Reinforced Concrete   Structures 

·       M.Sc in Forestry and Environmental Management  at Sri Jayawardenapura

         University

                      Lecturing in the Subject   Remote Sensing and GIS  in 1998, 2000                         

March  1984 to October 1990    Part time  Tutor  :  Monash University,  Australia

·        Tutoring in Soil Mechanics for Third year students.

·        Demonstrating and marking of Final year Soil Engineering laboratory work.

·        Tutoring on Mechanics of Structures and Mathematics for first year Engineering students.

  Professional Experience
 

1991 April to date - University of Moratuwa, Sri Lanka

Involved in various consultancy work performed by the Geotechnical Engineering Division  of the Department of  Civil Engineering for numerous government and private sector establishments.  

I was directly involved in testing, analyzing the results and in the preparation of reports for various laboratory tests such as UU, CU, CD and Multistage triaxial tests, Consolidation tests, Classification tests and field tests such as Plate loading test and Vane shear test.

 
  Special Consultancy Projects Undertaken
 

 

1.      Preparation of Site Investigation reports and recommendations for foundations, for a number of projects, in association with GEOTECH Ltd. From 1997.

 

2.      Design of ground improvement by pre-loading for a warehouse complex in Peliyagoda for Clough Engineering (Australia) in association with Soil Engineering and Deep Wells Ltd. In 1992.

 

3.      Design of Retaining walls to restore a failed slope in Kandy in 1995.

 

4.      Design of lateral earth support system for the excavation  for pile caps and ramps leading to the basements  in Ceylinco - Seylan towers for Keangnam Enterprises in 1996 and 1997.

 

5.      Geotechnical design of Colombo - Katunayaka Expressway - Design of road embankments through soft ground and design of ground improvement techniques. (worked as a consultant in this project in collaboration with  the NBRO for RDA) in 1997.

 

6.      Design of Earth support systems for excavations of basements in a high rise commercial building in Kandy in association with STRAD Consultants in 1998.

 

7.      Design of Earth Retaining systems for the Kadawatha end, that is underlain by Peat, in the Ragama fly over bridge, for RDA in 1998.

 

8.      Design of remedial measures for sewer lines and passageways showing excessive settlements at Automobile Training School site Orugodawatta, which is underlain by peat, in association with Soil and Foundation Ltd. In 1999.

 

9.      Design of the earthfill for reclamation of a 2 acre site underlain by soft peat layers of thickness in excess of 10 m, for Trans water logistics in 2000.

 

10.  Design of retaining walls to stabilized failed slopes at a water treatment plant in Kandy with STEMS Consultants, in 2000.

 

11.  Design of earth retaining systems and foundations and monitoring of the fill at the Madiwela Government Project with STEMS Consultants Ltd in 2000.

 

12.  Evaluation of Slope Stability and Design of Stabilization measures for the mini hydropower plant at Belihuloya for the Lanka Transformers (Pvt) Ltd in 2001.

 

13.  Design of Bunds using Reinforced Earth Techniques with the use of coir Geotextiles for Prawn farms in Puttlam, Sri Lanka in 2001.

 

14.  Design and monitoring of a landfill of 2 Acres on soft clays at Nawagamuwa in association with Soil and Foundation Ltd. in  2002

 

15.  Preparation of a report on Geotechnical aspects of proposed mini hydropower project at Arnayaka for Lanka Transformers Ltd. in Dec 2002

16.  Design of Earth retaining structures and evaluation of stability of slopes for the construction of water towers at Ja Ela in the towns north of Colombo water supply project in April 2003.

 

17.  Evaluation of Stability of slope and design of foundations and earth retaining structures for the proposed developments at Aniwatta, Kandy  in the construction of new premises for Gateway International school  in  September 2003.

 

18.  Consultant to the Halcrow  Group Ltd. on the Analysis of the Stability of cut slopes and the design of stabilizing methods in the Southern Transport Development Project during March to June 2004.

19. Evaluation of Stability of Slopes in the Koggala Resort Project for the 1:2:4 Designs (Pvt) Ltd in February 2006.


Publications
Publications in Refereed Journals and Conferences
  • Kulathilaka S A S and Donald I B D - Finite Element Analysis  of Embedded Retaining  Walls - Published in the Proceedings of the 7th  Conference of the  International Association for Computer Methods and Advances in Geomechanics, in Cairns, Australia (1991). 
  •   Kulathilaka S A S and Donald I B D  - Development of a Finite Element Model to Simulate the Compaction  of Backfill Behind  Retaining Walls -   Published in the  Proceedings of the 9th  Asian Regional Conference on Soil Mechanics and Foundation  Engineering in Bangkok. (1991)  
  • Kulathilaka S A S and Donald I B D  - Stability Calculations of Retaining Walls via Finite Element Methods and the Nodal Displacement Method - Published in the 6th  Australia-New Zealand Conference on Geomechanics  held in Christchurch, New Zealand in February 1992. 
  • Kulathilaka S A S  - Back Analysis of Backfill Compacted Retaining Wall case Studies -  Published in the 13th International Conference in Soil Mechanics and Foundation Engineering,  held in New Delhi, India in January 1994.  
  •  Kulathilaka S A S - Interface Testing for the Finite Element Study of Retaining Wall Behaviour - Published in the 2nd Young Geotechnical Engineers Conference, held in Bangkok (1994).
  •  Kulathilaka  S A S - Application of Finite Element Method to Analyse Retaining Wall Behaviour - Published in Geotechnical Journal - Journal of the Sri Lankan  Geotechnical  Society (1998) pp14-27.
  • Sumanarathna I H D, Mallawarchchi D. P. and Kulathilaka S A S  - Stabilisation of Slopes by Anchored Tyre Retaining Structures - published in the XIVth  International Conference in Soil Mechanics and Foundation Engineering held in Germany in 1997. pp 1261- 1264.
  • Kulathilaka  S  A  S  - Improvement of Engineering Properties of Peat by Preconsolidation -   Published in the proceedings of the Asian Regional Conference of International Society of Soil Mechanics and Geotechnical Engineering to be held in South Korea in August 1999. pp 97 - 100.
  • Kulathilaka  S  A  S,  Nawagamuwa  U  P  -  Internally Stabilized Earth Retaining Systems With  Discarded Tyres - Published in the Proceedings of the Engineering Research Unit Symposium  at University of Moratuwa in December 2000. 
  •  Kulathilaka  S  A  S,   -  Development of Internally Stabilised Earth Retaining Structures with   Local Material - published in the XVth  International Conference in Soil Mechanics and Foundation Engineering held in Turkey in 2001 pp 1179-1184.
  •   Kulathilaka  S  A  S, Nawagamuwa, U.P.  - A Study on Bamboo Reinforced Earth Retaining Structures - published in the Proceedings of the Engineering Research Unit Symposium  at University of Moratuwa in December 2001.
  • Kulathilaka  S  A  S, , Munasinghe W G S   -  Improvement of Engineering Properties of Peat by Cement and Lime mixing -  published in the Proceedings of the Engineering Research Unit Symposium  at University of Moratuwa in December 2001.
  • Kulathilaka  S  A  S, , Mettananda D C A   -  Development of Analytical and Physical Models to Study the Effectiveness of  Soil  Nailing  Technique  for  the Stabilisation of Slopes in Sri  Lanka - published in the Proceedings of the  3 rd International Conference on “ Landslides Slope Stability and the Safety of Infrastructure"  in Singapore, in July 2002. pp 309-316.
  • Mettananda D C A , Kulathilaka  S  A  S,  - Dependence of  Probabilistic Evaluation of  Slope Stability on the Deterministic Model -  published in the Proceedings of the 3rd International Conference on “Landslides Slope Stability and the Safety of Infrastructure" in Singapore in July 2002. pp 333-340
  • Mettananda D C A , Kulathilaka  S A S, - Use of  Probabilistic Concepts in Slope Engineering - published in the proceedings of the 96th Annual Sessions of Institution  of  Engineers Sri Lanka in October 2002  
  • Kulathilaka  S  A  S, Mettananda D C A - Assessment of Slope Stabilization Techniques through Probabilistic Approach. -  published in the Proceedings of the Engineering Research Unit Symposium  at University of Moratuwa in  August 2002  -   
  • Kulathilaka  S  A  S,  -  Overcoming Problems due to Peaty Clays in Sri Lanka - An Invited Paper   published and presented  at the  Indian Geotechnical Conference  held in Allahabad, India  in December 2002. pp 830-839   
  • Kulathilaka  S  A  S,  - Use of Electro-Osmosis Technique for the Improvement of  in Sri Lanka - An Invited Paper   published   at the Symposium on Advances in Geotechnical Engineering  held at Indian Institute of Technology, Kanpur  in March 2003.  pp 183-193   
  • Kulathilaka  S  A  S, Mettananda D C A  -  Assessment of the  Stabilization of Some Sri Lankan Slopes by the Probabilistic Approach - Paper  published  at the  12th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering to be held in Singapore in August 2003. pp 961-964.  
  • Karunawardana  W  A , Kulathilaka  S  A  S  -   Field Monitoring of a Fill on Peaty Clay and its Monitoring - Paper    published  at the  12th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering to be held in Singapore in August 2003.  pp 159-162 
  • Munasinghe W  G S, Kulathilaka  S  A  S  - Modelling the Consolidation behaviour of Peat and Improvements - Paper   published  at the  12 th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering to be held in Singapore in August 2003.,  pp 175 -178.  
  • Kulathilaka S A S, Silva L I N - Optimum Geometric Shapes for Gravity Retaining Structures - Paper  published  in the Proceedings of the 97th Annual Sessions of the IESL in  October 2003.,  pp 101-110.  
  • Kulathilaka  S A S, Muhunthan A  -  Use of Light weight Fill in Constructions on  Soft Peaty Clays - Paper  published  in the  Proceedings of the 97th Annual Sessions of the IESL in  October 2003., pp 93-101.  
  • Kulathilaka  S  A  S, Sagarika D K N S - Compressibility Characteristics of Electrically Treated Peaty Clays  - Paper   published  at the  ERU symposium at University of Moratuwa  September 2003.  
  • Kugan R, Puswewala U G A, Kulathilaka  S  A  S and Peiris T A, - Peaty Clay Improvement With Prefabricated Vertical Drains - Paper published in the Proceedings of the 97th Annual Sessions of the IESL in  October 2003.  
  • Kugan R, Puswewala UGA, Kulathilaka  S  A  S and Peiris T A, - Consolidation Testing of Peaty Clay  -  Paper published  at the ERU symposium at University of Moratuwa  September 2003.  
  • Kulathilaka  S  A  S, Muhunthan A  -  Construction of Embankments on Soft Peaty Clays with Lightweight Fill Materials - Paper published  in the  Proceedings of the 98th  Annual Sessions of the IESL in  October 2004.  
  • Kulathilaka  S  A  S , Sagarika D K N S, Perea H A C -  Parameters Affecting the Electro - Osmotic Consolidation of Peaty  Clays - Paper published in the Proceedings of the 98th Annual Sessions of the IESL in  October 2004
  • Muhunthan A, Kulathilaka  S  A  S  -    Engineering properties of Tyre Chips and Sri Lankan Lateritic Soil Mixture as a Lightweight fill Material. - Paper published at the ERU symposium at University of Moratuwa  in  September 2004. 
  • Kulathilaka  S  A  S, Muhunthan A  - Numerical Simulation of Use of Lightweight Fill in Construction of Embankments on Soft Peaty Clays. - Paper published at the 16th  International Conference on Soil Mechanics and Geotechnical Engineering to be held in Osaka, Japan in September 2005.  
  • Kulathilaka  S  A  S,  Mettananda D C A - Use of  Soil Nailing Technique for Stabilisation  of Slopes  - Published  in Geotechnical Journal - Journal of the Sri Lankan  Geotechnical  Society (2006).  
  • Kulathilaka  S  A  S , Sagarika D K N S   -  Evaluation of Electro - Osmotic Parameters for Sri Lankan Peaty Clay -  Paper  submitted for publication in the Ground Improvement Journal of the Institution of Civil Engineers (London) in 2006.  
  •   Kulathilaka  S  A  S , Sagarika D K N S   -  Electro Osmotic Consolidation of Peaty Clay Under Three Dimensional Conditions - Paper submitted for publication in the Ground Improvement Journal of the Institution of Civil Engineers (London) in 2006.
Research Publications in Non-refereed Journals and Conferences

1.       Kulathilaka S A S  - Ground Improvement Techniques Applicable to Sri Lanka - Published in the Sri Lankan Geotechnical Society Seminar on Experiences in Techniques of Foundation  Treatment and Ground Improvement (1995) 

2.       Kulathilaka  S A S - Different forms of Earth Retaining Structures, their mechanisms ,  Methods of Design and Construction.  Keynote paper, Published in the  Proceedings of the Sri Lankan Geotechnical Society Conference on Earth Retaining Structures - Sept. 1998 pp 1-34. 

3.       Kulathilaka S A S - Model  Studies on Anchored Tyre Earth Retaining Structures and Development of a Design Method - Published in the proceedings of the Sri Lankan Geotechnical Society Conference on  Earth  Retaining Structures - September 1998 pp 43-58. 

4.       Kulathilaka  S  A S  - Model Studies on Bamboo Reinforced Earth  Retaining Structures and  Anchored Tyre  Earth Retaining Structures - A poster paper submitted to the 11th Asian Regional Conference of the ISSMGE  held in Korea  August 1999 pp 101-102. 

5.       Kulathilaka S  A  S - Design of Earth Retaining Structures According to BS 8002 -  Published in the Proceedings of the Seminar on Earth Retaining Structures organized by Central Province branch of SLGS in October 1999.  

6.       Kulathilaka  S  A  S,  - Geotechnical Engineering Education in Sri Lanka  - Published in the Proceedings of the  First International Conference on Geotechnical Engineering Education and Training held in Romania  in June 2000. pp 163-166. 

7.       Design of Shallow  Foundations on Soft Clays / Peat -  Published in the Proceedings of the Seminar on Design and Construction of Shallow Foundations organised by the Central Province Centre of the Sri Lankan Geotechnical Society on 30th March 2001, pp 1-13 

8.       Munasinghe W G S , Kulathilaka  S  A  S, ,  - Modelling the Consolidation Behaviour of Peat and Improvements - Published in the Proceedings of the Conference on Ground Improvement Techniques - Organised by the Sri Lankan Geotechnical Society - May 2002 in Colombo pp 1-10. 

9.       Karunawardana W A, Kulathilaka  S  A  S, -   Improvement of Engineering Properties of Peat by  Preconsolidation  - A Comparison of  Field and Laboratory test Results - Published in the Proceedings of the Conference on Ground Improvement Techniques - Organised by the Sri Lankan Geotechnical Society - May 2002 in Colombo  pp11-20.