The scattering of plane P, SV waves by twin lining tunnels with imperfect interfaces embedded in an elastic half-space

Huang, L; Liu, Z; Wu, C; Liang, J

The scattering of plane P, SV waves by twin lining tunnels with imperfect interfaces embedded in an elastic half-space

Huang, L Liu, Z Wu, C

Liang, J

Permalink

Publication Type:: Journal Article
Citation:: Tunnelling and Underground Space Technology, 2019, 85 pp. 319 - 330
Issue Date:: 2019-03-01

Closed Access

	Filename	Description	Size
	1-s2.0-S0886779818303225-main.pdf	Published Version	4.21 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Huang, L	en_US
dc.contributor.author	Liu, Z	en_US
dc.contributor.author	Wu, C https://orcid.org/0000-0001-6786-7934	en_US
dc.contributor.author	Liang, J	en_US
dc.date.accessioned	2020-03-23T04:34:48Z
dc.date.available	2020-03-23T04:34:48Z
dc.date.issued	2019-03-01	en_US
dc.identifier.citation	Tunnelling and Underground Space Technology, 2019, 85 pp. 319 - 330	en_US
dc.identifier.issn	0886-7798	en_US
dc.identifier.uri	http://hdl.handle.net/10453/139481
dc.description.abstract	© 2018 Elsevier Ltd A viscous-slip interface model is employed to simulate the contact between the tunnels lining and the surrounding rock, and the scattering of P, SV waves by twin shallowly buried lining tunnels is investigated with the indirect boundary integral equation method (IBIEM). The amplification effect of the dynamic stress concentration of the lining and the surface displacement near the tunnels is examined. It is evident that the slipping-stiffness coefficient and viscosity coefficient at the lining-surrounding rock interface have a significant influence on the dynamic stress distribution and the nearby surface displacement response of the lining tunnel, while the influence characteristics strongly depend on the incident wave type, frequency and angle. Under the incidence of low frequency wave, as a whole, with the increase of the sliding stiffness, the hoop stress increases gradually for plane P and SV waves; while in the resonance frequency (the incident wave frequency is consistent with the natural frequency of the soil column above the tunnels), specially for high-frequency band, the dynamic stress concentration effect is more significant for smaller sliding stiffness. With the increase of viscosity coefficient, the dynamic stress concentration factor inside the lining gradually decreases. Also, the tunnels with viscous-slip interfaces have a more significant amplification effect on the nearby surface displacement amplitude. Moreover, the hoop stress of the twin tunnels may be obviously larger than that of single tunnel in most cases. The dynamic analysis of the underground structure under the actual strong dynamic loading should consider the influence of the slip effect between the lining and surrounding rock interface.	en_US
dc.relation.ispartof	Tunnelling and Underground Space Technology	en_US
dc.relation.isbasedon	10.1016/j.tust.2018.12.024	en_US
dc.subject.classification	Geological & Geomatics Engineering	en_US
dc.title	The scattering of plane P, SV waves by twin lining tunnels with imperfect interfaces embedded in an elastic half-space	en_US
dc.type	Journal Article
utslib.citation.volume	85	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0914 Resources Engineering and Extractive Metallurgy	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	85	en_US

Abstract:

© 2018 Elsevier Ltd A viscous-slip interface model is employed to simulate the contact between the tunnels lining and the surrounding rock, and the scattering of P, SV waves by twin shallowly buried lining tunnels is investigated with the indirect boundary integral equation method (IBIEM). The amplification effect of the dynamic stress concentration of the lining and the surface displacement near the tunnels is examined. It is evident that the slipping-stiffness coefficient and viscosity coefficient at the lining-surrounding rock interface have a significant influence on the dynamic stress distribution and the nearby surface displacement response of the lining tunnel, while the influence characteristics strongly depend on the incident wave type, frequency and angle. Under the incidence of low frequency wave, as a whole, with the increase of the sliding stiffness, the hoop stress increases gradually for plane P and SV waves; while in the resonance frequency (the incident wave frequency is consistent with the natural frequency of the soil column above the tunnels), specially for high-frequency band, the dynamic stress concentration effect is more significant for smaller sliding stiffness. With the increase of viscosity coefficient, the dynamic stress concentration factor inside the lining gradually decreases. Also, the tunnels with viscous-slip interfaces have a more significant amplification effect on the nearby surface displacement amplitude. Moreover, the hoop stress of the twin tunnels may be obviously larger than that of single tunnel in most cases. The dynamic analysis of the underground structure under the actual strong dynamic loading should consider the influence of the slip effect between the lining and surrounding rock interface.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/139481