Shashika Atapattu

• Master of Engineering
• PhD Student at University of Technology Sydney

Increasing demand for transportation has forced new infrastructure to be built on weak subgrade soils such as estuarine or marine clays. The application of heavy and high-frequency cyclic loads due to vehicular movement during the operational (post-construction) stage of tracks can cause (i) cyclic undrained failure, (ii) mud pumping or subgrade fl...

Railways are often subjected to periodic cyclic loading and intermittent rest periods. Excessive consolidation settlements can affect the performance of railway tracks built on the soft subgrade. The consolidation behavior under railway loading conditions with rest periods has not been evaluated thoroughly. In this study, laboratory testing was con...

Principles related to the stabilization of soft clay using the vacuum preloading method is well presented in the literature. However, a limited number of studies have focused on the horizontal deformations of the nearby non-treated area due to vacuum preloading. In this study, an evaluation of the horizontal deformation within the non-treated area...

This paper investigates the failure of the Meeliyadda Bridge, which occurred, when two trucks carrying metal were crossing the bridge. It was reported that some of the lateral bracings of the top chord had removed with the failure of the bridge. Finite element (FE) analysis was carried out using the SAP2000 FE software, where two different FE model...