Analysis of circular tunnels due to seismic P-wave propagation, with emphasis on unreinforced concrete liners

Title: Analysis of circular tunnels due to seismic P-wave propagation, with emphasis on unreinforced concrete liners
Creator: Kouretzis, George P.; Andrianopoulos, Konstantinos I.; Sloan, Scott W.; Carter, John P.
Relation: Computers and Geotechnics Vol. 55, p. 187-194
Publisher Link: http://dx.doi.org/10.1016/j.compgeo.2013.08.012
Publisher: Elsevier Science & Technology
Resource Type: journal article
Date: 2014
Description: A set of closed-form expressions to calculate tunnel liner forces due to compressional seismic P-wave propagation is presented. The results are compared against a state-of-practice method that considers only shear S-waves, and verified against dynamic numerical analyses. Under the realistic assumption of full-slip conditions at the liner-rock mass interface, it is shown that P-waves can lead to significantly higher axial hoop forces compared to S-waves, and can be critical for tunnels bored through areas of irregular topography/geological stratigraphy. The findings are of particular interest for the analysis of unreinforced concrete tunnel liners, where earthquake effects can be a governing factor.
Subject: earthquakes; tunnels; unreinforced concrete; P-waves
Identifier: http://hdl.handle.net/1959.13/1056397
Identifier: uon:16039
Identifier: ISSN:0266-352X
Language: eng
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