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M.R. Motahari ;Ciência e Natura 2015, 37 6-1

Autor: Reza Zamani

Fuente: http://www.redalyc.org/articulo.oa?id=467547682055


Introducción



Ciência e Natura ISSN: 0100-8307 cienciaenaturarevista@gmail.com Universidade Federal de Santa Maria Brasil Zamani, Reza; Motahari, M.R. The effect of soil stiffness variations on Tunnel Lining Internal Forces under seismic loading and Case comparison with existing analytical methods Ciência e Natura, vol.
37, núm.
6-1, 2015, pp.
476-487 Universidade Federal de Santa Maria Santa Maria, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=467547682055 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative 476 Ciência e Natura, Santa Maria, v.
37 Part 1 2015, p.
476−487 ISSN impressa: 0100-8307 ISSN on-line: 2179-460X The effect of soil stiffness variations on Tunnel Lining Internal Forces under seismic loading and Case comparison with existing analytical methods Reza Zamani1, M.R.
Motahari2,* 1 Department of civil engineering, Khomein Branch, Islamic Azad University, Khomein, Iran 2Dept.
of Civil Engineering, Faculty of Engineering, Arak University, Arak, Iran *m-motahari@araku.ac.ir Abstract Closed-form solutions are of great interest for quick and accurate evaluation of stresses and displacements around underground excavations.
Dynamic effects on underground structures have often been neglected based on the assumption that their response to earthquake loading is relatively safe as compared to that of surface structures.
Nevertheless, several examples of recorded damage to underground structures for which seismic forces were not considered in the original design. Therefore, during the seismic excitement, tunnels are basically subjected to three kinds of deformation : axial compression and extension, longitudinal bending and ovaling or racking.
In the present investigation a series of numerical analyses under the influe...





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