Conference Paper

Analiza napona i deformacija tunela simulacijom fazne izgradnje

Authors:
Mladen Cosic
Mladen Cosic
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Abstract

Simuliranje fazne izgradnje tunela moguće je izvršiti primenom staged construction procedure koja je implementirana u metodu konačnih elemenata. U radu se razmatra eliminacija grupe površinskih konačnih elemenata kojom je definisana određena faza izgradnje tunela. Na taj način se dobija rešenje kod koga se uspostavlja kontinuitet veze fazne izgradnje. U analizi je korišćen Hoek-Brown-ov kriterijum sloma preko parametara: GSI-geološki indeks otpornosti, D-faktor koji zavisi od stepena poremećenosti stanja geološke sredine, σ1'-glavni efektivni napon, σ3'-bočni efektivni napon, Em-modul deformacije stenske mase. Primenom ovakvog konstitutivnog modela materijala i procedure numeričke analize, razmatrani su naponi i deformacije po obodu tunela kao model simulacije fazne izgradnje.

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