Model testing of rotary jacked open ended tubular piles in saturated non-cohesive soil

verfasst von

Martin Achmus, Dennis Frick, Kirill Alexander Schmoor, Patrick Gütz

Abstract

Conventional installation methods for displacement piles (i.e. impact-driving or vibratory-driving) induce vibrations and settlements in a zone close to the pile. Moreover they lead to noise pollution unfavourable especially in urban areas. A possible solution to these problems is the technology of rotary pile jacking. Thereby the pile is continuously pushed into the subsoil by a vertical force. For large pile dimensions a rotation is additionally applied to overcome high axial forces. This paper presents a new testing facility for axially loaded piles in saturated non-cohesive soils as well as the preparation procedure of the test sand. The facility is capable of installing and loading model piles by applying an axial load as well as a simultaneous rotary motion and enables model testing in different scales up to pile diameters of 101.6 mm and a maximum embedment length of 2.3 m. All test stages can be monitored and recorded with a data acquisition system, making it possible to study the influence of different installation parameters on the required installation forces and the resulting bearing behaviour. First results prove the efficiency of a rotation regarding the required axial installation force.

Organisationseinheit(en)

Institut für Geotechnik

Typ

Aufsatz in Konferenzband

Publikationsdatum

05.07.2018

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

Ziele für nachhaltige Entwicklung

SDG 11 – Nachhaltige Städte und Gemeinschaften

Elektronische Version(en)

https://www.taylorfrancis.com/chapters/model-testing-rotary-jacked-open-ended-tubular-piles-saturated-non-cohesive-soil-frick-schmoor-g%C3%BCtz-achmus/e/10.1201/9780429438646-92 (Zugang: Geschlossen)