Premium
Finite element versus simplified methods in the seismic analysis of underground structures
Author(s) -
Gómezmassó Alberto,
Attalla Ibrahim
Publication year - 1984
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290120305
Subject(s) - finite element method , plane stress , structural engineering , stress (linguistics) , field (mathematics) , geology , stress field , plane (geometry) , finite element limit analysis , geometry , engineering , geotechnical engineering , mixed finite element method , mathematics , philosophy , linguistics , pure mathematics
Seismic analysis of buried tunnels is considered herein. A comparison of results is carried out between a detailed finite element analysis and several simplified models for hand calculation. The finite element analysis is conducted by superimposing the free field motions and the interaction motions. The latter are calculated in a plane strain geometry taking into account the influence of adjacent structures with an approximation for 3‐D effects and for soil non‐linearities. Simplified models give, in general, conservative results, although better approximations are obtained by modelling the tunnel bends, where stress concentration occurs.