ARC Centre of Excellence Geotechnical Science & Engineering

RHD Students

Shiran Galpathage

RHD Students


B.Sc (Eng)


  • 2007
    Bachelor of Science in Civil Engineering at University of Peradeniya, Sri Lanka


  • 2008
    Design Engineer, Road Development Authority, Sri Lanka
  • 2007
    Teaching assistance, University of Moratuwa, Sri Lanka

Research Interests

  • Tree root reinforcement
  • Soft ground settlements
  • Unsaturated soil


  • Professor Buddhima Indraratna
  • Dr Cholachat Rujikiatkamjorn
  • Dr Vinod Jayan Sylaja

Research Topic

Native Vegetation for improving Shear Strength of Soil

Research Abstract

This research project focuses the use of native vegetation to improve the shear strength of the soft grounds. Trees increases soil strength through the suction and the root reinforcements. The reinforcement effect is captured through the analytical solutions for the root pull out strength and the series of laboratory and field experiments of the tree pull out test. Available suction models and root reinforcement models are combined numerically to estimate the influence of trees on the shear behavior of soft soils.