1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
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Τύπος:	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Liquefaction mitigation methods for existing shallow-founded elongated structures on horizontal or mildly-inclined ground
Συγγραφέας:	[EL] Παπαδημητρίου, Αχιλλεύς[EN] Papadimitriou, Achilleas [EL] Βαλσάμης, Αλέξανδρος[EN] Valsamis, Alexandros [EL] Λημναίου, Ταξιαρχούλα[EN] Limnaiou, Taxiarchoula
Ημερομηνία:	18/08/2022
Περίληψη:	This numerical study investigates the effectiveness of selected ground improvement methods for existing elongated structures that are shallow-founded on horizontal or mildly-inclined liquefiable ground. It employs nonlinear dynamic fully coupled 2D ground response analyses performed with the finite-difference method. When the mildly-inclined ground remains unimproved, narrow structures prove more susceptible to horizontal displacement and rotation than wide structures with the same load. However, settlements develop regardless of the width of the structure and the (mild) inclination angle of the ground. Focusing on the improvement of existing structures, the paper studies prefabricated vertical drains or stiff containment walls implemented solely at their perimeter. Reinforced concrete walls (diaphragm or secant pile walls) prove much more effective in reducing structural settlements, horizontal displacements and rotations than prefabricated vertical drains, provided that their tip reaches the bottom of the liquefiable layer. Constructing these walls with deep soil-cement mixing proves a viable (less costly) alternative, at least for horizontal ground conditions.
Γλώσσα:	Αγγλικά
Σελίδες:	15
DOI:	10.1016/j.soildyn.2022.107453
EISSN:	1879-341X
Θεματική κατηγορία:	[EL] Πολιτική μηχανική[EN] Civil Engineering [EL] Γεωτεχνική μηχανική και Γεωλογική μηχανική[EN] Geotechnical Engineering and Engineering Geology
Λέξεις-κλειδιά:	liquefaction; Earthquake Engineering; ground improvement; foundation engineering; Diaphragm walls; Deep soil mixing; earthquakes; Foundation failure; Lateral spreading; Prefabricated vertical drains; Secant pile walls
Κάτοχος πνευματικών δικαιωμάτων:	© 2022 Elsevier Ltd. All rights reserved.
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://www.sciencedirect.com/science/article/pii/S0267726122003025
Ηλεκτρονική διεύθυνση περιοδικού:	https://www.sciencedirect.com/journal/soil-dynamics-and-earthquake-engineering
Τίτλος πηγής δημοσίευσης:	Soil Dynamics and Earthquake Engineering
Τόμος:	162
Σελίδες τεκμηρίου (στην πηγή):	Article no 107453
Σημειώσεις:	This research is carried out/funded in the context of the project “Applicability of seismic liquefaction mitigation via nano-material injection under existing infrastructures” (MIS 5049429) under the call for proposals “Researchers' support with an emphasis on young researchers- 2nd Cycle”. The project is co-financed by Greece and the European Union (European Social Fund- ESF) by the Operational Programme Human Resources Development, Education and Lifelong Learning 2014–2020.
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