Reference number : GC-2017-Q4-01903, amendment number : , agreement type : G, recipient legal name : Wijewickreme, Dharmapriya (The University of British Columbia), recipient country : CA, recipient province : nan, recipient city : British Columbia|Colombie-Britannique, recipient postal code : nan, program name english : Engage Grants for universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : Ground improvement by compaction pilling is widely used to increase the resistance of loose sands to_x000D_
liquefaction. Better understanding of seismic risk and the increasingly severe design criteria in modern design_x000D_
codes have led to a need for technically and cost efficient approaches to remediation of existing infrastructure._x000D_
Experience during remediation of the Mission Bridge in Abbotsford, B.C., using driven piles, indicated that the_x000D_
shape of piles used for densification had a marked effect on the degree of improvement achieved. Field test_x000D_
results showed that cylindrical concrete piles were much less effective than tapered timber piles for_x000D_
densification. This has shown a gap in our understanding of soil improvement by compaction piling. As such,_x000D_
there is a strong need to undertake further research to advance knowledge on this front. Working with an_x000D_
industry collaborator, a comprehensive research program on this subject is proposed. The projected research_x000D_
project will investigate the reasons for the apparent greater effectiveness of tapered piles compared to_x000D_
cylindrical piles for the compaction of sands. It will build on work carried out elsewhere to study the_x000D_
soil-structure interaction mechanism governing the behaviour of tapered piles and pile groups under axial_x000D_
loading. It will focus on the different soil deformation mechanisms created by cylindrical and tapered piles_x000D_
during pile installation. Highly qualified personnel will be trained during this work, thus adding to expertise on_x000D_
ground improvement by compaction piling in Canada. The research outcomes will be of direct high-value_x000D_
applicability to the Company and will improve understanding of ground treatment techniques for improving the_x000D_
ground supporting new and existing infrastructure. It will also improve the cost-effectiveness of treatment. The_x000D_
project will also build a strong new working relationship with the applicant and an industry collaborator. This_x000D_
investigation will lead to journal publications and will contribute to the ground improvement industry., program purpose french : Ground improvement by compaction pilling is widely used to increase the resistance of loose sands to_x000D_
liquefaction. Better understanding of seismic risk and the increasingly severe design criteria in modern design_x000D_
codes have led to a need for technically and cost efficient approaches to remediation of existing infrastructure._x000D_
Experience during remediation of the Mission Bridge in Abbotsford, B.C., using driven piles, indicated that the_x000D_
shape of piles used for densification had a marked effect on the degree of improvement achieved. Field test_x000D_
results showed that cylindrical concrete piles were much less effective than tapered timber piles for_x000D_
densification. This has shown a gap in our understanding of soil improvement by compaction piling. As such,_x000D_
there is a strong need to undertake further research to advance knowledge on this front. Working with an_x000D_
industry collaborator, a comprehensive research program on this subject is proposed. The projected research_x000D_
project will investigate the reasons for the apparent greater effectiveness of tapered piles compared to_x000D_
cylindrical piles for the compaction of sands. It will build on work carried out elsewhere to study the_x000D_
soil-structure interaction mechanism governing the behaviour of tapered piles and pile groups under axial_x000D_
loading. It will focus on the different soil deformation mechanisms created by cylindrical and tapered piles_x000D_
during pile installation. Highly qualified personnel will be trained during this work, thus adding to expertise on_x000D_
ground improvement by compaction piling in Canada. The research outcomes will be of direct high-value_x000D_
applicability to the Company and will improve understanding of ground treatment techniques for improving the_x000D_
ground supporting new and existing infrastructure. It will also improve the cost-effectiveness of treatment. The_x000D_
project will also build a strong new working relationship with the applicant and an industry collaborator. This_x000D_
investigation will lead to journal publications and will contribute to the ground improvement industry., agreement title english : Effect of pile shape on effectiveness of ground improvement by compaction piling, agreement title french : Effect of pile shape on effectiveness of ground improvement by compaction piling, agreement number : EGP, agreement value : 24500.0, agreement start date : 2018-03-07, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada