Department of Civil Engineering



Dr. U. I. Dissanayake

Head & Senior Lecturer, Dept. of Civil Engineering


Office Address:

Department of Civil Engineering,

University of Peradeniya,

Peradeniya,20400,

Sri Lanka.

udaya@eng.pdn.ac.lk

Telephone : +94-81-2393500, +94-777-812910

    Dr. U. I. Diassanayake is the Head of the Department of Civil Engineering, University of Peradeniya since 2020 to-date. He obtained his BSc.Eng (Hons) in Civil Engineering from University of Peradeniya in 1990 and Ph.D. from the University of Sheffield in 1996. He works as a Senior Lecturer at the Department of Civil Engineering, University of Peradeniya since 1996. He worked as a Senior Structural Design Engineer at U&D Engineering Consultants during 3 sabbatical leave periods from 2006 to 2008, 20012 to 2014 and 2017 to 2019. He is a Chartered Engineer qualified to design/review building structures with more than 20 floors in Sri Lanka as per the Directory of Structural Engineers published by the IESL. He is a member of IESL accreditation review panel to few Sri Lankan Universities and a regular reviewer of Sri Lanka Science Foundation. His research areas include Steel and Steel-Composite Structures and Cost-effective structural systems.
  • PhD : University of Sheffield
  • BScEng : University of Peradeniya, Sri Lanka
  • Member, IESL accreditation review panel to few Sri Lanka Universities
  • Regular reviewer, Sri Lanka Science Foundation
  • University appointed member of for Condominium Authority Act review committee in year 2016
  • Member, The Institution of Engineers, Sri Lanka
  • Member, The Society of Structural Engineers, Sri Lanka
  • Chartered Engineer qualified to design/review building structures with more than 20 floors in Sri Lanka as per the Directory of Structural Engineers published by the IESL
  • Member, Sri Lanka Association for the Advancement of Science
  • Member, Sri Lanka Geotechnical Society
  • Member, Engineering Council of Sri Lanka
  • Steel and Steel-Composite Structures
  • Cost effective structural systems
  • Head, Civil Engineering, University of Peradeniya, Sri Lanka (2020 Feb - To date)
  • Senior Lecturer, Civil Engineering, University of Peradeniya, Sri Lanka (1996 - To date)
  • Senior Structural Design Engineer, U & D Engineering Consultants during 3 sabbatical leave periods (2006 to 2008, 20012 to 2014 and 2017 to 2019)
  • Lecturer, Civil Engineering, University of Peradeniya, Sri Lanka (1991 - 1996)
  • President's Award for Research Publications, 2002
  • B Kiriparan, J Jayasinghe, UI Dissanayake, Prediction of Across Wind Response of Tall Buildings: An Overview, ICSECM 2019, pp.383-397.
  • S. R. Herath, H. Abeyruwan, K. R. B. Herath, U. I. Dissanayake, D. J. Gallage, M.Vignarajah, M. Raviprasad and M. P. Ranaweera, Structural Appraisal of a Wrought Iron Truss Railway Bridge, Proceedings of the International Conference on "Advances in Concrete Technology, Structural Engineering and Design: Dedicated to Helarisi Abeyruwan", University of Peradeniya, Sri Lanka, August 13, 2019.
  • Chaminda Bandara, J. A. S. C. Jayasinghe, Kamal Karunananda, U.I. Dissanayake and Ranjith Dissanayake, Metals in old bridges in Sri Lanka a review, Proceedings of the Peradeniya University International Research Sessions, Sri Lanka, 2017, Vol. 20.
  • PAK Karunananda, UI Dissanayake, CS Bandara, J Jayasinghe, Metals used in old bridges in Sri Lanka and the effects of their material properties on capacity estimations, The Institution of Engineers: Colombo, 2017.
  • CS Bandara, J Jayasinghe, PAK Karunananda, UI Dissanayake, Metals used in old Bridges in Sri Lanka and the Effects of their Material Properties on Capacity Estimations, ENGINEER 50 (03), 2017, pp.9-17.
  • CS Bandara, SC Siriwardane, UI Dissanayake, R Dissanayake, Full range S-N curves for fatigue life evaluation of steels using hardness measurements, International Journal of Fatigue 82, Part 2, 2016, pp.325-331.
  • CS Bandara, SC Siriwardane, UI Dissanayake, R Dissanayake, Hardness-Based Non-destructive Method for Developing Location Specific SN Curves for Fatigue Life Evaluation, Journal of Civil Engineering and Architecture 10, 2016, 183-191.
  • J. A. S. C. Jayasinghe, Chaminda Bandara, Kushan Wijesundara, U.I. Dissanayake and Ranjith Dissanayake, Quality Assessment of Automated 3D Solid Bridge Structure Models Based on Meta-Modeling Theory, Fifth annual sessions of Society of Structural Engineers - Sri Lanka at Cinnamon Grand Hotel, Colombo, Sri Lanka, September 2016.
  • Chaminda Bandara, Sudath Siriwardane, U.I. Dissanayake and Ranjith Dissanayake, Fatigue Damage Assessment of Steel Structures and Components, 12th International Conference of the International Institute for Infrastructure Resilience and Reconstruction (IIRRR), Kandy, Sri Lanka, 2016, Vol.12.
  • CS Bandara, SC Siriwardane, UI Dissanayake, R Dissanayake, Developing a full range S-N curve and estimating cumulative fatigue damage of steel elements, Computational Materials Science 96, 2015, 96-101.
  • CS Bandara, UI Dissanayake, PBR Dissanayake, Novel method for developing SN curves for corrosion fatigue damage assessment of steel structures, 6th International Conference on Structural Engineering and Construction Management 2015, Kandy, Sri Lanka
  • CS Bandara, UI Dissanayake, R Dissanayake, Stress Concentrations of Diagonal Truss Member-Main Girder Joints: An Experimental Study, Proceedings of the Peradeniya Univ. International Research Sessions, Sri Lanka, Vol. 18, 4th & 5th July, 2014, University of Peradeniya.
  • CS Bandara, SC Siriwardane, UI Dissanayake, R Dissanayake, Fatigue failure predictions for steels in the very high cycle region-A review and recommendations, Engineering Failure Analysis 45, 2014, 421-435.
  • CS Bandara, SC Siriwardane, UI Dissanayake, R Dissanayake, Fatigue strength prediction formulae for steels and alloys in the gigacycle regime, Int. J. Mater. Mech. Manuf 1, 2013, 256-260.
  • CS Bandara, SC Siriwardane, UI Dissanayake, R Dissanayake, Prediction Methods of Stress Life Curves for Various Stress Ratios for Steels in the High Cycle Region, 2013, ACEPS.
  • Chaminda Bandara, Ranjith Dissanayake, Sudath Siriwardane and U.I. Dissanayake, Shear Strength of Reinforced Concrete Beams with Minimum Percentage of Shear Reinforcement, International Journal of Materials Mechanics and Manufacturing 1, International Conference on Nano and Materials Engineering (ICNME), Bangkok, March 2013, Vol.1-3.
  • Chaminda Bandara, Ranjith Dissanayake, Sudath Siriwardane and U.I. Dissanayake, Fatigue Strength Prediction Formulae for Steels and Alloys in the Gigacycle Regime, International Journal of Materials Mechanics and Manufacturing 1, International Conference on Nano and Materials Engineering (ICNME), Bangkok, March 2013, Vol. 1-3.
  • Marasingha J., Wijesundara K.K. and Dissanayake U.I. "Comparison of Incremental Dynamic Analysis Curve with Pushover Curve" Proceedings of the SAITM Research Symposium on Engineering Advancements, 2013, Malabe, Sri Lanka.
  • Abeykoon, AMGS, Hettiarachchi, HAKS, Hewage, HCL, Gallage, DJ, Dissanayake, UI, Problems related to telecommunication tower foundation, Civil Engineering Research Exchange Symposium Faculty of Engineering, University of Ruhuna, 2012, pp. 53-56.
  • Abeyruwan, H. Dissanayake, U. I., Gallage, D. J., Herath, K. R. B., Herath, S. R., Ranaweera, M. P., Raviprasad, M. and Vignarajah, M., Condition Assessment of a Wrought-Iron Railway Bridge, Peradeniya University Research Session PURSE-2009, Proceeding and Abstracts, Vol.14, 3rd December, 2009, University of Peradeniya, pp. 443.
  • H Buddika, J Jayasinghe, KAS Susantha, UI Dissanayake, Strength and Displacement Characteristics of Steel Columns Subjected to Moderate Earthquake Loads, Peradeniya University Research Session PURSE - 2009, Proceeding and Abstracts, Vol.14,3rd December, 2009, University of Peradeniya, pp. 440.
  • T. Watabe, H. Yokouchi, S.D.G.S.P. Gunawardane and B.R.K. Obeyesekera and U. I. Dissanayake, Preliminary Study On Wave Energy Utilization In Sri Lanka, The Eleventh International Offshore and Polar Engineering Conference 2001, 17-22 June, Stavanger, Norway, ISOPE-I-01-089.
  • U.I. Dissanayake, Ian Burgess and John Buick Davison, Modelling of plane composite frames in unpropped construction, April 2000, Engineering Structures, April 2000, Vol. 22, Issue 4, pp. 287-303.
  • U.I. Dissanayake, John Buick Davison and Ian Burgess, Composite beam behaviour in braced frames, Journal of Constructional Steel Research, March 1999, Vol. 49, Issue 3, pp. 271-289.
  • U.I. Dissanayake, John Buick Davison and Ian Burgess, Limit State Behaviour of Composite Frames, Journal of Constructional Steel Research, April 1998.
  • UI Dissanayake The influence of the composite beam-to-steel column joint on the behaviour of composite beams in frames- 1996, Thesis (Ph.D.)
  • Dissanayake UI, Burgess IW & Davison JB, Development of a computer program for the analysis of composite frames with partial interaction, 4th Pacific Structural Steel Conference, Singapore, 1995.



Department of Civil Engineering