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Discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments
Dissertation (MEng)--University of Pretoria, 2018.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2018
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| _version_ | 1867613574973620224 |
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| access_status_str | Open Access |
| author2 | Jacobsz, Schalk Willem |
| author_browse | Jacobsz, Schalk Willem |
| author_facet | Jacobsz, Schalk Willem |
| collection | Thesis |
| dc_rights_str_mv | © 2018 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng)--University of Pretoria, 2018. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/64125 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:19.381Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/64125 Discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments Jacobsz, Schalk Willem sachin.ravjee@gmail.com Wilke, Daniel Nicolas Ravjee, Sachin Discrete Element Method Integral Bridge Abutments Particle Shape Sphericity Geotechnical Engineering UCTD Engineering, built environment and information technology theses SDG-09 SDG-09: Industry, innovation and infrastructure Dissertation (MEng)--University of Pretoria, 2018. Integral bridges are designed without expansion joints or bearings to eliminate the maintenance and repair costs associated with them. Thus, the expansion and contraction due to daily and seasonal temperature variations of the deck of the bridge are restricted by the abutments, causing the abutments to move cyclically towards and away from the granular material used as backfill. This movement results in a stress accumulation in the backfill retained by the abutments. The Discrete Element Method (DEM) was used was used to perform a numerical sensitivity analysis, investigating the effect of granular particle shape on the response of backfill material retained by integral bridge abutments. Two DEM software suites were used to perform the simulations, namely STAR-CCM+, a commercial code, and Blaze-DEM, a research code under development at the University of Pretoria. Blaze-DEM makes use of Graphics Processing Unit (GPU) computing as opposed to traditional Central Processing Unit (CPU) computing. Blaze-DEM delivered computational times over 150 times faster than the equivalent simulation in STAR-CCM+. The results from the numerical sensitivity analysis showed that the particles with lower sphericities (higher angularities) experienced larger accumulations of stresses on the abutment as opposed to the more spherical particles. This was suggested to be a result of particle interlocking and reorientation. Civil Engineering MEng Unrestricted 2018-02-28T07:10:38Z 2018-02-28T07:10:38Z 2018-04-19 2018-02-01 Dissertation Ravjee, S 2018, Discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments, MEng Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/64125> A2018 http://hdl.handle.net/2263/64125 en © 2018 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Discrete Element Method Integral Bridge Abutments Particle Shape Sphericity Geotechnical Engineering UCTD Engineering, built environment and information technology theses SDG-09 SDG-09: Industry, innovation and infrastructure Discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments |
| title | Discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments |
| title_full | Discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments |
| title_fullStr | Discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments |
| title_full_unstemmed | Discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments |
| title_short | Discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments |
| title_sort | discrete element modelling investigating the effect of particle shape on backfill response behind integral bridge abutments |
| topic | Discrete Element Method Integral Bridge Abutments Particle Shape Sphericity Geotechnical Engineering UCTD Engineering, built environment and information technology theses SDG-09 SDG-09: Industry, innovation and infrastructure |
| url | http://hdl.handle.net/2263/64125 |