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Effect of imperfect interface on the dynamic response of a circular lined tunnel impacted by plane P-waves
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-5872-5173
Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-5165-4229
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2016 (English)In: Tunnelling and Underground Space Technology, ISSN 0886-7798, E-ISSN 1878-4364, Vol. 51, p. 68-74Article in journal (Refereed) Published
Abstract [en]

A theoretical method for studying the dynamic response of a circular lined tunnel with an imperfectly bonded interface subjected to plane P-waves is presented in the paper. The wave function expansion method was used and the imperfect interface was modeled with a spring model. Two cases were discussed in the paper. In the first case rock is harder than the lining and vice-versa in the second case. The results indicated that the variation in the stiffness of the interface has much influence on the distribution of dynamic stress concentration factors (DSCF) in the rock and the lining. The imperfection of the interface has a more noticeable influence on the DSCF in the rock mass and the lining at high frequency incident wave's scenario than low frequency incident wave's scenario. The resonance scattering phenomena can be observed when the bond is extremely weak. Limiting cases were considered and a good agreement with the solutions available in the literature was obtained.

Place, publisher, year, edition, pages
2016. Vol. 51, p. 68-74
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-15085DOI: 10.1016/j.tust.2015.10.011ISI: 000367493200008Scopus ID: 2-s2.0-84944346092Local ID: e8c88ef1-1254-4b5b-83b0-a0010b0b0d4aOAI: oai:DiVA.org:ltu-15085DiVA, id: diva2:988058
Note
Validerad; 2015; Nivå 2; 20151015 (chayir)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Yi, ChangpingZhang, PingJohansson, DanielNyberg, Ulf

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