Show simple item record

dc.contributor.authorLande, Einar John
dc.contributor.authorKarlsrud, Kjell
dc.contributor.authorLangford, Jenny
dc.contributor.authorNordal, Steinar
dc.identifier.citationJournal of Geotechnical and Geoenvironmental Engineering. 2020, 146 (8)en_US
dc.description.abstractA full-scale field test program was carried out to investigate the effects of drilling for tieback anchors on the surrounding ground. The test anchors were drilled from the ground surface through a soft clay deposit and into bedrock. Five different drilling methods were compared. All methods caused excess pore pressures in the surrounding clay, up to 70 kPa, extending several meters away from where drilling took place. This impact on pore pressures was for most drilling methods significantly larger than what has been observed for driven piles in clay. High penetration rate combined with water flushing during drilling through soft clay is the main reason for the effects on the pore pressure. Drilling with a down-the-hole hammer and air flushing through a layer of moraine and into bedrock in one of the test areas (Area B) caused significantly larger excess pore pressures and ground settlements than the other drilling methods. Approximately half of the maximum resulting settlements of 12 mm in Area B was most likely caused by reconsolidation of remolded clay around the casing tubes. Drilling with water-driven hammer in Area C had less effect on both pore pressures and ground settlements.en_US
dc.publisherAmerican Society of Civil Engineers, ASCEen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleEffects of Drilling for Tieback Anchors on Surrounding Ground: Results from Field Testsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.source.journalJournal of Geotechnical and Geoenvironmental Engineeringen_US
dc.relation.projectNorges forskningsråd: 267674en_US
dc.description.localcodeThis work is made available under the terms of the Creative Commons Attribution 4.0 International license,

Files in this item


This item appears in the following Collection(s)

Show simple item record

Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal