Αναλυτική λύση Αβαθούς Σήραγγας σε ελαστο-πλαστικό Ημίχωρο

Μασσίνας, Σπύρος; Massinas, Spiros

dc.contributor.author	Μασσίνας, Σπύρος	el
dc.contributor.author	Massinas, Spiros	en
dc.date.accessioned	2021-07-05T08:25:11Z
dc.date.available	2021-07-05T08:25:11Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/53586
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.21284
dc.rights	Default License
dc.subject	Applied mathematics	en
dc.subject	Plasticity	en
dc.subject	Underground works	en
dc.subject	tunnels	en
dc.subject	Σήραγγες	el
dc.subject	Εφαρμοσμένα μαθηματικά	el
dc.subject	Πλαστικότητα	el
dc.subject	Υπόγεια έργα	el
dc.title	Αναλυτική λύση Αβαθούς Σήραγγας σε ελαστο-πλαστικό Ημίχωρο	el
dc.title	Analytic Solution for Shallow Tunnelling Problems in Elastic-Plastic Half Space	en
heal.type	doctoralThesis
heal.classification	Επιστήμες Πολιτικού Μηχανικού	el
heal.classification	Μαθηματικά	el
heal.classification	Civil Engineering Science	en
heal.classification	Mathematics	en
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2019-12
heal.abstract	Only a few publications and researches describe analytic solutions for tunnelling problems having elastic behaviour, and they all concern the stress disturbance of either an equilibrated semi-infinite or infinite elastic solid due to the presence of a circular cavity (Mindlin (1939), Muir Wood (1975), Pender (1980), Verruijt & Booker (1996), Verruijt (1998), Strack (2002)). For the case of elastic-plastic behaviour, the problem of the plastic zone distribution around a circular tunnel is analysed by many authors, but only for infinite space (Westergaard (1940), Terzaghi (1943), Bray (1967), Jaeger & Cook (1976), Kachanov (1971), Detournay & John (1988)), which is the case of a very deep tunnel. However, the stress disturbance of an elastic-plastic semi-infinite space, pierced by a circular tunnel and bounded by a loaded upper surface has not yet been analysed. The calculation of the plastic stress and plastic zone distribution around a circular shallow tunnel under uniform pressure is the main scope of this Thesis. A closed form solution of the problem is derived with significant impact in practical problems by introducing a simple and effective method that allows the quick estimation of a shallow tunnel’s behaviour, since it gives, in principle, the opportunity for quick and accurate calculation of the plastic zone and stress distribution around a circular tunnel. By applying different values of support pressure, the tunnel designer can easily evaluate the feasibility of different design alternatives prior to the implementation of complicated computational analysis with Finite Elements (FE) or Finite Differences (FD).	en
heal.advisorName	Σακελλαρίου, Μιχαήλ	el
heal.advisorName	Sakellariou, Michael	en
heal.committeeMemberName	Σακελλαρίου, Μιχαήλ
heal.committeeMemberName	Παπαδρακής, Μανώλης
heal.committeeMemberName	Καττής, Μαρίνος
heal.committeeMemberName	Καββαδάς, Μιχαήλ
heal.committeeMemberName	Βουκουβάλας, Γεώργος
heal.committeeMemberName	Ψαρράκος, Παναγιώτης
heal.committeeMemberName	Νομικός, Παύλος
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Αγρονόμων και Τοπογράφων Μηχανικών. Τομέας Έργων Υποδομής και Αγροτικής Ανάπτυξης. Εργαστήριο Δομικής Μηχανικής και Στοιχείων Τεχνικών Έργων	el
heal.academicPublisherID	ntua
heal.numberOfPages	235 σ.	el
heal.fullTextAvailability	false