Medium-scale laboratory model of mono-bucket foundation for installation tests in sand
Design implications of suction installation of bucket foundations are still not well understood. During suction installation, applied suction under the bucket lid results in seepage flow through the surrounding sand. Seepage flow plays a pivotal role in reducing the penetration resistance, allowing...
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| Veröffentlicht in: | Canadian geotechnical journal 2019-08, Vol.56 (8), p.1142-1153 |
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| container_title | Canadian geotechnical journal |
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| creator | Koteras, Aleksandra Katarzyna Ibsen, Lars Bo |
| description | Design implications of suction installation of bucket foundations are still not well understood. During suction installation, applied suction under the bucket lid results in seepage flow through the surrounding sand. Seepage flow plays a pivotal role in reducing the penetration resistance, allowing for full penetration despite the initial large soil resistance. However, loosening of the inside soil plug might be problematic when the soil approaches its failure stage, due to soil piping or extensive soil heave inside the bucket foundation. To better understand the interaction between the soil and bucket skirt during suction installation, this paper describes the results of medium-scale tests of bucket foundation installations in sand, comparing jacking and suction installations. Experimental measurements of the pore pressure around the bucket skirt are compared with the numerical simulation results, to validate the finite-element model and to enable analysis of the soil behavior around the skirt. |
| doi_str_mv | 10.1139/cgj-2018-0134 |
| format | Article |
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During suction installation, applied suction under the bucket lid results in seepage flow through the surrounding sand. Seepage flow plays a pivotal role in reducing the penetration resistance, allowing for full penetration despite the initial large soil resistance. However, loosening of the inside soil plug might be problematic when the soil approaches its failure stage, due to soil piping or extensive soil heave inside the bucket foundation. To better understand the interaction between the soil and bucket skirt during suction installation, this paper describes the results of medium-scale tests of bucket foundation installations in sand, comparing jacking and suction installations. Experimental measurements of the pore pressure around the bucket skirt are compared with the numerical simulation results, to validate the finite-element model and to enable analysis of the soil behavior around the skirt.</description><subject>aspiration</subject><subject>bucket foundation</subject><subject>Computer simulation</subject><subject>dense sand</subject><subject>Experiments</subject><subject>Finite element method</subject><subject>fondation de seau</subject><subject>Geological engineering</subject><subject>Infiltration</subject><subject>Laboratories</subject><subject>Loosening</subject><subject>Mathematical models</subject><subject>Numerical analysis</subject><subject>Numerical simulations</subject><subject>Penetration</subject><subject>Penetration resistance</subject><subject>Piping</subject><subject>Pore pressure</subject><subject>Pore water pressure</subject><subject>résistance du sol</subject><subject>sable dense</subject><subject>Sand</subject><subject>Scale models</subject><subject>Seepage</subject><subject>Simulation</subject><subject>Soil</subject><subject>Soil analysis</subject><subject>Soil resistance</subject><subject>Soil suction</subject><subject>Soils</subject><subject>Studies</subject><subject>suction</subject><issn>0008-3674</issn><issn>1208-6010</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqVks2LFDEQxYMoOK4evTd68pC1kk5nuo_L4urCquDXNaSTypixO5lN0uD-92YYQRcaRHLIy-NXVSl4hDxncM5YO7w2uz3lwHoKrBUPyIZx6KkEBg_JBqDqVm7FY_Ik5z0AE4LzDfn2Hq1fZpqNnrCZ9BiTLjHdNXO0ODXRVREiHRfzA0vj4hKsLj6GKlPjQy56mk5GwVxytZqsg31KHjk9ZXz2-z4jX6_efLl8R28-vr2-vLihupN9obxFh9tBdiNv5ThIHHh98FYI6bbWoETLe47IbGut7oQc0YLoAdwAxsLQnpGXp76HFG-X-gO1j0sKdaTiXHZSSCn5H2pXl1Q-uFiSNrPPRl10Q53PRccqRVeoHQZMeooBna_2Pf7FCm8O_lb9DZ2vQPVYnL1Z7frqXkFlCv4sO73krK4_f_oP9sPqdibFnBM6dUh-1ulOMVDH-KgaH3WMjzrGp_Jw4kMyCTPqZL7_o-QXPXLDkA</recordid><startdate>20190801</startdate><enddate>20190801</enddate><creator>Koteras, Aleksandra Katarzyna</creator><creator>Ibsen, Lars Bo</creator><general>NRC Research Press</general><general>Canadian Science Publishing NRC Research Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISN</scope><scope>ISR</scope><scope>7TG</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope></search><sort><creationdate>20190801</creationdate><title>Medium-scale laboratory model of mono-bucket foundation for installation tests in sand</title><author>Koteras, Aleksandra Katarzyna ; 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During suction installation, applied suction under the bucket lid results in seepage flow through the surrounding sand. Seepage flow plays a pivotal role in reducing the penetration resistance, allowing for full penetration despite the initial large soil resistance. However, loosening of the inside soil plug might be problematic when the soil approaches its failure stage, due to soil piping or extensive soil heave inside the bucket foundation. To better understand the interaction between the soil and bucket skirt during suction installation, this paper describes the results of medium-scale tests of bucket foundation installations in sand, comparing jacking and suction installations. Experimental measurements of the pore pressure around the bucket skirt are compared with the numerical simulation results, to validate the finite-element model and to enable analysis of the soil behavior around the skirt.</abstract><cop>Ottawa</cop><pub>NRC Research Press</pub><doi>10.1139/cgj-2018-0134</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| source | NRC Research Press; Alma/SFX Local Collection |
| subjects | aspiration bucket foundation Computer simulation dense sand Experiments Finite element method fondation de seau Geological engineering Infiltration Laboratories Loosening Mathematical models Numerical analysis Numerical simulations Penetration Penetration resistance Piping Pore pressure Pore water pressure résistance du sol sable dense Sand Scale models Seepage Simulation Soil Soil analysis Soil resistance Soil suction Soils Studies suction |
| title | Medium-scale laboratory model of mono-bucket foundation for installation tests in sand |
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