Hafiz Ahmed Waqas

Hafiz Ahmed Waqas
The University of Tokyo | Todai · Department of Civil Engineering

Master of Engineering
PhD scholar at the university of Tokyo

About

10
Publications
285
Reads
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1
Citation
Introduction
A PhD scholar pursuing research on the topic of Seismic Performance Evaluation of a Cable-stayed Bridge under Probabilistic Multiple Support Excitation
Additional affiliations
September 2015 - August 2016
National Development Consultants (NDC) Pakistan
Position
  • Engineer
Description
  • • Reviewed the shop drawings of the project as per design and contract documents • Performed site visits to verify Field Change Requests (FCRs) of the contractor • Supported project activities and work enhancement initiatives, as directed by the Resident Engineer on site, to enhance project performance
Education
September 2018 - August 2021
The University of Tokyo
Field of study
  • Civil Engineering
September 2016 - August 2018
The university of Tokyo
Field of study
  • Civil Engineering
September 2011 - July 2015

Publications

Publications (10)
Conference Paper
Full-text available
Culverts are small bridges that provide safe passage for crossing waterways over railroads and highways. The strong and economical culverts are certainly desirable and the availability of modern and convenient computational tools can offer great liberties to realize this goal. Among the different types, precast reinforced box culverts are known to...
Conference Paper
Full-text available
Precast concrete slabs are a helpful addition to any construction project. They are used in small homes to large industrial buildings. These slabs are strong and durable than in-situ ones owing to the quality and controlled environment. They are available in variety of shapes, sizes and design which make them more versatile and easily applicable in...
Conference Paper
Increase in engineering demand parameters (EDPs) is observed in long span bridges, under Multiple Support Excitations (MSE) effects. Extended research utilized the synthetic and historical seismic excitations to probe the MSE effects. The past research recognized the significance of employing actual onsite recorded input motions, to limit the uncer...
Conference Paper
p>Spatially variable earthquake ground motions yield the different structural demands compared to the conventional synchronous ground motions. In this paper, a cable-stayed bridge under on-site recorded spatially variable earthquake ground motions is analyzed and phenomena of response amplification based on in-situ monitoring are investigated. A ca...
Conference Paper
Extended structures such as long-span bridges are subjected to Multiple Support Excitation (MSE) in contrast to the simplified design Synchronous Excitation (SE). Under MSE, bridge supports experience spatially variable ground excitations due to wave time lag, coherency loss and local site-amplification effects, resulting in dissimilar structural r...
Poster
Seismic response of a cable-stayed bridge under recorded SVGEM was investigated. A design framework for cable-stayed bridges to estimate engineering demands with reduced uncertainties considering SVGEM effects was discussed. Subsequent analysis to investigate the root cause of amplification and variations of response was deemed necessary. Necessity...
Conference Paper
Bridge bearings are often malfunctioned because of dirt, moisture and maintenance shortages, which results in poor performance and potential damage to the main structure. Previous research has reported that the steel bearings exhibit the stick-slip phenomena during the earthquake and cause large seismic effects like pounding. However, this behaviou...
Poster
Renewable energy resources are the utmost priority of the world to meet their future energy requirements under changing climate and socioeconomic conditions. Increasing population is pressing hard to the available resources and the environment, while, situations are getting even worse for megacities which are center of globalization and economic de...

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