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Main Title: Numerical evaluation of the soil behavior during impact driving of pipe-piles
Author(s): Daryaei, Reza
Bakroon, Montaser
Aubram, Daniel
Rackwitz, Frank
Type: Conference Object
Abstract: During the impact driving of pipe-piles, the soil is influenced in different ways including the void ratio, stress distribution, and plugging formation. Such effects may play an important role in structural design criteria such as the pile’s lateral support provided by the soil. Hence, this work is focused on investigating the change in the mechanical characteristics of the soil during impact driving using an advanced numerical analysis tool which is validated against an experiment. The investigation includes the pile penetration behavior, plugging formulation inside the pile, and the change of the lateral stress in the soil during the pile installation. The proposed numerical model is shown to provide similar results compared to experimental measurements. The void ratio of the soil is influenced due to pile driving up to a lateral and vertical distance of 2D and 1D, respectively, where D is the pile diameter. Compared to the initial void ratio, the soil inside the pile experienced loosening about 20% while the soil outside is densified about 30% during driving. Moreover, the induced lateral stress inside is more than the one outside the pile, indicating the formation of plugging. Compared to the initial lateral stress state, the pile installation increased the lateral stress up to four times inside and two times outside the pile. Based on the findings of this work, the effects of driving on soil mechanical properties are not minimal and may affect the pile performance including the lateral resistance of the pile. By using the numerical approaches such as one in this study, the evaluation of the various effects on the soil due to pile driving and gaining a better understanding of the such complex problems are possible.
Subject(s): pipe piles
impact driving
soil-structure interaction
Multi-Material Arbitrary Lagrangian-Eulerian
granular soil
Issue Date: Sep-2019
Date Available: 28-Jan-2020
Language Code: en
DDC Class: 550 Geowissenschaften
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
Page Start: 133
Page End: 140
TU Affiliation(s): Fak. 6 Planen Bauen Umwelt » Inst. Bauingenieurwesen » FG Grundbau und Bodenmechanik
Appears in Collections:Technische Universität Berlin » Publications

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