{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/101581"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/101581","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Numerical simulation of dynamic centrifuge tests on concrete faced rockfill dam","abstract":"The design details of concrete faced rockfill dams (CFRDs) have depended extensively on empirical relations and experience. Empirical relations may become insufficient, however, as the height of the dam increases, or when geometric complexities are involved and coupled with complex loading conditions such as seismic loads. To make up for these limitations, numerical tools can give valuable insight into how CFRDs respond to both static and seismic loading conditions. This thesis utilizes numerical simulations using finite element method to study nonlinear dynamic responses of CFRDs. The first part of the study reviews the current state of design details of CFRDs. The design details include properties of commonly used embankment zones, concrete faces, and plinths, including compaction methods of zones, particle sizes, thickness of layers during placement, slab and plinth dimensions, etc. In addition, the performance of some well-documented CFRDs are summarized. The second part of the study evaluates the computed seismic response via numerical simulations representing prototype centrifuge experiments performed on a CFRD model. The effects of two factors on the computed response are investigated: (1) impact of un/reloading rules (hysteretic behavior), and (2) interface type between concrete face and rockfill (welded and friction contact) on the computed seismic response of the CFRDs. The numerical results are evaluated by comparing with measurements in terms of accelerations, bending moment increments of the concrete face, spectral accelerations and lateral deformations. The comparisons show that the proper representation of the hysteretic damping of the rockfill and the interface type have a key role in capturing the measured response of the dam. The analyses demonstrate the effectiveness of employed numerical tools in representing the seismic response of CFRD.","abstract_html":"The design details of concrete faced rockfill dams (CFRDs) have depended extensively on empirical relations and experience. Empirical relations may become insufficient, however, as the height of the dam increases, or when geometric complexities are involved and coupled with complex loading conditions such as seismic loads. To make up for these limitations, numerical tools can give valuable insight into how CFRDs respond to both static and seismic loading conditions. This thesis utilizes numerical simulations using finite element method to study nonlinear dynamic responses of CFRDs. The first part of the study reviews the current state of design details of CFRDs. The design details include properties of commonly used embankment zones, concrete faces, and plinths, including compaction methods of zones, particle sizes, thickness of layers during placement, slab and plinth dimensions, etc. In addition, the performance of some well-documented CFRDs are summarized. The second part of the study evaluates the computed seismic response via numerical simulations representing prototype centrifuge experiments performed on a CFRD model. The effects of two factors on the computed response are investigated: (1) impact of un/reloading rules (hysteretic behavior), and (2) interface type between concrete face and rockfill (welded and friction contact) on the computed seismic response of the CFRDs. The numerical results are evaluated by comparing with measurements in terms of accelerations, bending moment increments of the concrete face, spectral accelerations and lateral deformations. The comparisons show that the proper representation of the hysteretic damping of the rockfill and the interface type have a key role in capturing the measured response of the dam. The analyses demonstrate the effectiveness of employed numerical tools in representing the seismic response of CFRD.","abstract_has_math":false,"creators":["Acar, Muhsin"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Civil Engineering","degree_department":null,"school":null,"contributors":["Hashash, Youssef M. A."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-09-27T16:17:52Z","date_published":"2018-09-27T16:17:52Z","updated_at":"2026-07-22T22:24:40Z","subjects":["concrete faced rockfill dams","CFRD","centrifuge tests"],"languages":["en"],"rights":["Copyright 2018 Muhsin Acar"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/101581","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Hashash, Youssef M. 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Empirical relations may become insufficient, however, as the height of the dam increases, or when geometric complexities are involved and coupled with complex loading conditions such as seismic loads. To make up for these limitations, numerical tools can give valuable insight into how CFRDs respond to both static and seismic loading conditions. This thesis utilizes numerical simulations using finite element method to study nonlinear dynamic responses of CFRDs. The first part of the study reviews the current state of design details of CFRDs. The design details include properties of commonly used embankment zones, concrete faces, and plinths, including compaction methods of zones, particle sizes, thickness of layers during placement, slab and plinth dimensions, etc. In addition, the performance of some well-documented CFRDs are summarized. The second part of the study evaluates the computed seismic response via numerical simulations representing prototype centrifuge experiments performed on a CFRD model. The effects of two factors on the computed response are investigated: (1) impact of un/reloading rules (hysteretic behavior), and (2) interface type between concrete face and rockfill (welded and friction contact) on the computed seismic response of the CFRDs. The numerical results are evaluated by comparing with measurements in terms of accelerations, bending moment increments of the concrete face, spectral accelerations and lateral deformations. The comparisons show that the proper representation of the hysteretic damping of the rockfill and the interface type have a key role in capturing the measured response of the dam. The analyses demonstrate the effectiveness of employed numerical tools in representing the seismic response of CFRD.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-09-27 without embargo terms","The student, Muhsin Acar, accepted the attached license on 2018-07-13 at 10:48.","The student, Muhsin Acar, submitted this Thesis for approval on 2018-07-13 at 11:09.","This Thesis was approved for publication on 2018-07-16 at 09:01.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12866 on 2018-09-27 at 10:48:27","Made available in DSpace on 2018-09-27T16:17:52Z (GMT). No. of bitstreams: 2 ACAR-THESIS-2018.pdf: 13355455 bytes, checksum: 76f235cbc06bafafa124364b08950534 (MD5) LICENSE.txt: 4208 bytes, checksum: 501a22f93942fecc45cfc859202a6ae8 (MD5) Previous issue date: 2018-07-16"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Numerical simulation of dynamic centrifuge tests on concrete faced rockfill dam"]}]}],"canonical_facts":{"dc:contributor":["Hashash, Youssef M. A."],"dc:creator":["Acar, Muhsin"],"dc:date":["2018-09-27T16:17:52Z","2018-07-16","2018-08"],"dc:description":["The design details of concrete faced rockfill dams (CFRDs) have depended extensively on empirical relations and experience. Empirical relations may become insufficient, however, as the height of the dam increases, or when geometric complexities are involved and coupled with complex loading conditions such as seismic loads. To make up for these limitations, numerical tools can give valuable insight into how CFRDs respond to both static and seismic loading conditions. This thesis utilizes numerical simulations using finite element method to study nonlinear dynamic responses of CFRDs. The first part of the study reviews the current state of design details of CFRDs. The design details include properties of commonly used embankment zones, concrete faces, and plinths, including compaction methods of zones, particle sizes, thickness of layers during placement, slab and plinth dimensions, etc. In addition, the performance of some well-documented CFRDs are summarized. The second part of the study evaluates the computed seismic response via numerical simulations representing prototype centrifuge experiments performed on a CFRD model. The effects of two factors on the computed response are investigated: (1) impact of un/reloading rules (hysteretic behavior), and (2) interface type between concrete face and rockfill (welded and friction contact) on the computed seismic response of the CFRDs. The numerical results are evaluated by comparing with measurements in terms of accelerations, bending moment increments of the concrete face, spectral accelerations and lateral deformations. The comparisons show that the proper representation of the hysteretic damping of the rockfill and the interface type have a key role in capturing the measured response of the dam. The analyses demonstrate the effectiveness of employed numerical tools in representing the seismic response of CFRD.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-09-27 without embargo terms","The student, Muhsin Acar, accepted the attached license on 2018-07-13 at 10:48.","The student, Muhsin Acar, submitted this Thesis for approval on 2018-07-13 at 11:09.","This Thesis was approved for publication on 2018-07-16 at 09:01.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12866 on 2018-09-27 at 10:48:27","Made available in DSpace on 2018-09-27T16:17:52Z (GMT). No. of bitstreams: 2 ACAR-THESIS-2018.pdf: 13355455 bytes, checksum: 76f235cbc06bafafa124364b08950534 (MD5) LICENSE.txt: 4208 bytes, checksum: 501a22f93942fecc45cfc859202a6ae8 (MD5) Previous issue date: 2018-07-16"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/101581"],"dc:language":["en"],"dc:rights":["Copyright 2018 Muhsin Acar"],"dc:subject":["concrete faced rockfill dams","CFRD","centrifuge tests"],"dc:title":["Numerical simulation of dynamic centrifuge tests on concrete faced rockfill dam"],"dc:type":["text"],"thesis:degree_discipline":["Civil Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:40Z"}