{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/19807"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/19807","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Analysis of soil nailed retaining walls","abstract":"Restriction data tranferred 2014-07-01T11:16:42-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","abstract_html":"Restriction data tranferred 2014-07-01T11:16:42-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","abstract_has_math":false,"creators":["Salama, Mohamed Elkhairy Ibrahem"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Civil and Environmental Engineering","degree_department":null,"school":null,"contributors":["Cording, Edward J."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T12:19:11Z","date_published":"2011-05-07T12:19:11Z","updated_at":"2026-07-22T22:25:14Z","subjects":["Engineering, Civil"],"languages":["eng"],"rights":["Copyright 1992 Salama, Mohamed Elkhairy Ibrahem"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9215881","(UMI)AAI9215881"],"render_values":[{"text":"AAI9215881","href":null,"code":true},{"text":"(UMI)AAI9215881","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/19807","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Cording, Edward J."]},{"key":"dc:creator","label":"Author","values":["Salama, Mohamed Elkhairy Ibrahem"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T12:19:11Z","10000-01-01","1992"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil and Environmental Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Civil"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1992 Salama, Mohamed Elkhairy Ibrahem"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9215881","(UMI)AAI9215881","http://hdl.handle.net/2142/19807"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Restriction data tranferred 2014-07-01T11:16:42-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","A finite element (F.E.) computer program, SNAP, has been developed in this study. The analysis simulates the sequence of excavation and support of soil nailed retaining walls. The program contains isoparametric elements for the soil, beam elements for the wall facing and soil nails, and interface elements between the soil and the nails and between the soil and the wall facing. The subsequent analyses were conducted using a nonlinear-plasticity model with non-associated flow rule and both isotropic and kinematic hardening to simulate granular soil behavior. SNAP can simulate soil layers with different soil properties. The capability of the material model for simulating soil behavior has been demonstrated for triaxial compression, extension, transition from triaxial extension to compression and plane strain compression. The possible range of the values of the soil parameters used in the material model has been evaluated and correlated with soil density.","A full scale field test of a combined soil nailed and tieback wall has been analyzed using SNAP. Field measurements of the wall deformation and loads in the nails have been compared with the F.E. results. Contours of stresses have been presented. The F.E. analysis was used to compare the measured and predicted performance of soil nailed walls with ties and without ties. The influence of some of the soil model parameters on the prediction of the deformation and the ratio of the volume of surface displacements to the volume of the lateral displacements of the soil nailed wall has been compared with ratio obtained from the field test and the F.E. parametric study.","The parameters of nail length and, spacing and excavation height have been investigated for their influence on wall deformations and volume of lateral and vertical deformation and the results have been shown in a series of figures, for soil nailed walls without tiebacks. A suggestion has been made for the ratios of the length of the nails to the current height of the wall and the spacing between the nails to the current height of the wall required for certain displacement level as well as to achieve adequate global factor of safety.","Made available in DSpace on 2011-05-07T12:19:11Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9215881.pdf: 8749465 bytes, checksum: 39bbcdb557397033c51dde3cf7d7294c (MD5) Previous issue date: 1992","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:39:33Z Item is restricted indefinitely.","U of I Only"]},{"key":"dc:title","label":"Title","values":["Analysis of soil nailed retaining walls"]}]}],"canonical_facts":{"dc:contributor":["Cording, Edward J."],"dc:creator":["Salama, Mohamed Elkhairy Ibrahem"],"dc:date":["2011-05-07T12:19:11Z","10000-01-01","1992"],"dc:description":["Restriction data tranferred 2014-07-01T11:16:42-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","A finite element (F.E.) computer program, SNAP, has been developed in this study. The analysis simulates the sequence of excavation and support of soil nailed retaining walls. The program contains isoparametric elements for the soil, beam elements for the wall facing and soil nails, and interface elements between the soil and the nails and between the soil and the wall facing. The subsequent analyses were conducted using a nonlinear-plasticity model with non-associated flow rule and both isotropic and kinematic hardening to simulate granular soil behavior. SNAP can simulate soil layers with different soil properties. The capability of the material model for simulating soil behavior has been demonstrated for triaxial compression, extension, transition from triaxial extension to compression and plane strain compression. The possible range of the values of the soil parameters used in the material model has been evaluated and correlated with soil density.","A full scale field test of a combined soil nailed and tieback wall has been analyzed using SNAP. Field measurements of the wall deformation and loads in the nails have been compared with the F.E. results. Contours of stresses have been presented. The F.E. analysis was used to compare the measured and predicted performance of soil nailed walls with ties and without ties. The influence of some of the soil model parameters on the prediction of the deformation and the ratio of the volume of surface displacements to the volume of the lateral displacements of the soil nailed wall has been compared with ratio obtained from the field test and the F.E. parametric study.","The parameters of nail length and, spacing and excavation height have been investigated for their influence on wall deformations and volume of lateral and vertical deformation and the results have been shown in a series of figures, for soil nailed walls without tiebacks. A suggestion has been made for the ratios of the length of the nails to the current height of the wall and the spacing between the nails to the current height of the wall required for certain displacement level as well as to achieve adequate global factor of safety.","Made available in DSpace on 2011-05-07T12:19:11Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9215881.pdf: 8749465 bytes, checksum: 39bbcdb557397033c51dde3cf7d7294c (MD5) Previous issue date: 1992","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:39:33Z Item is restricted indefinitely.","U of I Only"],"dc:identifier":["AAI9215881","(UMI)AAI9215881","http://hdl.handle.net/2142/19807"],"dc:language":["eng"],"dc:rights":["Copyright 1992 Salama, Mohamed Elkhairy Ibrahem"],"dc:subject":["Engineering, Civil"],"dc:title":["Analysis of soil nailed retaining walls"],"dc:type":["text"],"thesis:degree_discipline":["Civil and Environmental Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:14Z"}