eprintid: 10087601 rev_number: 21 eprint_status: archive userid: 608 dir: disk0/10/08/76/01 datestamp: 2019-12-10 14:57:50 lastmod: 2021-09-30 22:39:42 status_changed: 2019-12-10 14:57:50 type: proceedings_section metadata_visibility: show creators_name: Duan, N creators_name: Lu, Y creators_name: Cheng, YP title: Numerical investigation on installation process of displacement pile ispublished: pub divisions: UCL divisions: B04 divisions: C05 divisions: F44 note: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. abstract: The fundamental mechanisms governing the behaviour of displacement piles in sand are not well comprehended, leading to unreliability in design methods. Understanding the soil responses during monotonic jacking can help improve the pile foundation design. This paper presents numerical results from a two-dimensional discrete element method (DEM), and the influence of soil properties is investigated. The soil responses were examined in terms of displacement, stress and porosity distributions during monotonic jacking, and the Grid Method (GM) was used during sample preparation. The simulation results show great resemblance to the experimental phenomenon. An interface zone adjacent to the pile shaft is observed to comprise of both of both varying stress states and volumetric states while the pile-soil interface is being sheared. The horizontal stress that acted on the pile shaft reduced in response to installation. date: 2019 date_type: published publisher: American Rock Mechanics Association (ARMA) official_url: https://www.onepetro.org/conference-paper/ARMA-2019-1697 oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 1717794 lyricists_name: Cheng, Yi lyricists_id: YPCHE61 actors_name: Cheng, Yi actors_id: YPCHE61 actors_role: owner full_text_status: public publication: 53rd U.S. Rock Mechanics/Geomechanics Symposium event_title: 53rd U.S. Rock Mechanics/Geomechanics Symposium event_location: New York (NY), USA event_dates: 23rd-26th June 2019 book_title: Proceedings of the 53rd U.S. Rock Mechanics/Geomechanics Symposium citation: Duan, N; Lu, Y; Cheng, YP; (2019) Numerical investigation on installation process of displacement pile. In: Proceedings of the 53rd U.S. Rock Mechanics/Geomechanics Symposium. American Rock Mechanics Association (ARMA) Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10087601/1/Nuo_201906%20ARMA%20conference%20Paper%2020190423_HC%20%28002%29.pdf