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Main Title: Investigation of the fluidised zone in deep vibrocompaction
Author(s): Wotzlaw, Moritz
Type: Conference Object
Language Code: en
Abstract: Deep vibrocompaction is an established method for the improvement of loose sandy soils using deep vibrators. In a basic modelling concept, the area of the ground influenced by the vibrator is subdivided into three concentric cylindrical zones. According to that model, the compaction occurs only in some distance to the vibrator, since the acceleration amplitudes in the vicinity, the so-called fluidised zone, are considered too large. Fluidisation is defined and distinguished from liquefaction. Both phenomena can occur in the vicinity of the vibrator and so both have to be adequately considered in a simulation. A numerical model is developed and verified, while locally undrained conditions are applied in order to simulate liquefaction. Since mesh distortion becomes excessive, an MMALE-approach is being used.
Issue Date: Sep-2019
Date Available: 28-Jan-2020
DDC Class: 550 Geowissenschaften
Subject(s): soil improvement
numerical modelling
large deformations
Sponsor/Funder: DFG, 341427400, Untersuchung der Rütteldruckverdichtung in Sandböden zur Optimierung der Entwurfs- und Herstellungsqualität hinsichtlich Effektivität, Prognose und Kontrolle der erzielten Bodenverdichtung
Proceedings Title: Proceedings of the 1st Mediterranean Young Geotechnical Engineers Conference
Editor: Ülgen, Deniz
Saygili, Altuğ
Kahyaoğlu, Mehmet Rifat
Durmaz, Selda
Toygar, Onur
Göçügenci, Aysu
Publisher: Turkish Society for ISSMGE; Muğla Sıtkı Koçman University; International Society for Soil Mechanics and Geotechnical Engineering
Publisher Place: Muğla, Turkey
Page Start: 91
Page End: 98
Appears in Collections:FG Grundbau und Bodenmechanik » Publications

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