H. A. D. Samith Buddika

H. A. D. Samith Buddika
University of Peradeniya | UOP · Department of Civil Engineering

Doctor of Philosophy

About

22
Publications
14,305
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77
Citations
Introduction
Dr. Samith Buddika earned his PhD from Tokyo Institute of Technology (TIT), Japan,. During his PhD studies at TIT, he worked at JFE Steel Corporation as a research intern. Moreover, he was a short-term exchange student at Boğaziçi University, Istanbul, Turkey. goolgle site: https://sites.google.com/eng.pdn.ac.lk/samithbuddika LinkedIn: www.linkedin.com/in/samithbuddika
Additional affiliations
October 2017 - January 2018
Tokyo Institute of Technology
Position
  • Researcher
Education
October 2013 - July 2017
Tokyo Institute of Technology
Field of study
  • Civil Engineering
October 2011 - September 2013
Tokyo Institute of Technology
Field of study
  • Civil Engineering
January 2005 - August 2009
University of Peradeniya
Field of study
  • Civil Engineering

Publications

Publications (22)
Article
A method to accurately calculate seismic shear forces in post-tensioned hybrid (PH) precast concrete walls under risk-targeted maximum considered earthquake (MCER) level ground motions is essential, to avoid unexpected damage or possibly failure. Although extensive research on seismic performance evaluation of PH precast concrete walls has been car...
Article
Full-text available
Code-based methods can only be used to determine the wind loading on single-plate billboards in the normal wind direction. No simplified methods are available to estimate the drag force coefficient for single-plate and two-plate billboards for various aspect ratios, clearance ratios and wind attack angles. Using the experimental types of research o...
Preprint
Full-text available
This work is as part of India-SriLanka Joint research funded by Department of Science and Technology, Government of India and MSRT SriLanka.
Preprint
Full-text available
Wireless sensor network (WSN) based SHM systems have shown significant improvement as compared to traditional wired-SHM systems in terms of cost, accuracy, and reliability of the monitoring. However, due to the resource-constrained nature of the sensor nodes, it is a challenge to process a large amount of sensed vibration data in real-time. Existin...
Conference Paper
This paper attempts to document the root cause of the development of spalling cracks and bursting cracks at the end block anchorage zone of post-tensioned precast bridge girders in Sri Lanka. These problems are not limited to those of post-tensioned precast bridge girders, but may occur in other type of structures with similar conditions and detail...
Conference Paper
Full-text available
The communication industries have seen a tremendous increase in last few years which have resulted in installation of large number of towers to increase the coverage area and network consistency. In wireless communication network, these towers play a significant role hence failure of such structure is a major concern. Many researches have determine...
Conference Paper
Full-text available
Floor vibrations induced by human walking were investigated in the study. The management of an industrial building encountered complaints of severe headache, vomiting, from its occupants in the newly built mezzanine floor. Especially some occupants complained regarding annoying or distracting vibrations in the floor. Floor vibration measurements we...
Conference Paper
Full-text available
Post-tensioned rocking (PR) precast concrete walls have been developed as an alternative to cast-in-place reinforced concrete (RC) shear walls for lateral-force resisting systems in buildings located in earthquake prone regions. In PR precast concrete walls, damage at the wall base is minimized by allowing gap opening/closing at the wall-foundation...
Conference Paper
Full-text available
Code-based methods and even most advanced tools such as the High-frequency Base Balanced (HFBB) data analysis have not been able to deliver accurate results in determining the effect of wind loads on high rise buildings. Moreover, the previously mentioned methods are able to deliver only limited information regarding the overall building behaviour...
Conference Paper
Full-text available
Seismic performance of post-tensioned hybrid precast concrete wall-frame (PWF) buildings has been mainly studied in the past by considering the effects of far-fault (FF) ground motions. In the present study, the multi-level seismic response of PWF buildings is investigated for near-fault (NF)pulse-like ground motions. For that purpose, rigorous non...
Article
Full-text available
The equivalent flag-shaped single-degree-of-freedom system used to calculate DE-level and MCER-level roof drifts of PH precast concrete walls is first described, and then validated with the results obtained using the 2D macromodel of a PH precast concrete wall. The maximum wall displacement of a PH precast concrete wall is assumed to be dominated b...
Article
Full-text available
A method to accurately calculate seismic shear forces in post-tensioned hybrid (PH) precast concrete walls under risk-targeted maximum considered earthquake (MCER) level ground motions is essential to avoid unexpected damage or possibly failure. Although extensive research on seismic performance evaluation of PH precast concrete walls has been carr...
Conference Paper
Full-text available
For earthquake disaster estimation of an urban area, three-dimensional (3D) numerical simulation for the seismic response of various structures is an alternative of the current estimation that uses empirical relations of structural damage probability for an estimated ground motion index. We need to focus on developing a more rational damage estimat...
Article
Cultural heritage structures are an integral facet of the irreplaceable cultural heritage of a nation and have been constructed several hundreds and even thousands of years ago. In this paper, based on a field reconnaissance of the highly damaged areas of Kathmandu Valley and Sindhupalchowk district, damage to cultural heritage structures due to th...
Article
Seismic performance of posttensioned hybrid precast wall systems has been mainly studied in the past without considering the interaction of the wall system with the rest of the structure. In the present study, the multilevel seismic response of posttensioned hybrid precast wall-frame (PWF) buildings is evaluated using nonlinear response history ana...
Conference Paper
Full-text available
The development of new structural systems which suffer no or minor damage following a severe event was a key interest of researchers during the past few decades. Self-centering walls with alternative dissipation mechanisms were among the next generation candidates for a damage avoidance design of structures while being cost effective. However, the...

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Projects

Projects (4)
Project
By using structural design actions code we can calculate the results of the design wind forces and including them in finite element analysis to obtain base reactions and maximum nodal displacements in the tower. By applying real wind profile in the CFD analysis and after getting tower foundation design forces we are going to compare both approaches. Our aim is to optimize the design of telecommunication towers by investigating the effectiveness of CFD analysis for the estimation of tower foundation design forces
Project
Small-scale Laboratory Experiment to Investigate Tsunami Bourne Debris Impact on Structures
Project
Nonlinear static procedures (NSPs) which involve, modal pushover analysis (MPA) uses monotonic lateral load distribution, whereas cyclic pushover analysis (CPA) uses cyclic loading and is capable of capturing the cumulative damage. The applicability of three-dimensional MPA and CPA to predict the inelastic seismic demands, of unsymmetric-plan reinforced concrete special moment resisting frame (RC-SMRF) buildings subjected to bidirectional excitation, is investigated. The accuracy of these methods are evaluated by comparing their results with those from nonlinear response history analysis (NLRHA).