Yue, F, Liu, B orcid.org/0000-0002-9104-3561, Zhu, B et al. (3 more authors) (2021) Shaking table test and numerical simulation on seismic performance of prefabricated corrugated steel utility tunnels on liquefiable ground. Soil Dynamics and Earthquake Engineering, 141. 106527. ISSN 0267-7261
Abstract
The seismic failure mechanism of a shallow-buried prefabricated corrugated steel utility tunnel on the liquefiable ground was investigated by the shaking table test and numerical simulation. Firstly, A scaled model of prefabricated corrugated steel utility tunnel, inside pipelines, and three kinds of brackets were designed and fabricated. The model system was then excited by two seismic ground motions on a shaking table. Various dynamic responses of the model system were measured and the interface slip of tunnel and surrounding soil was also tested by a self-designed transducer. The experimental results demonstrated that the near-tunnel soil was more likely to liquefy than the far-field soil, and the liquefied soil had a remarkable damping effect. The bottom bracket was more vulnerable to be affected by excitations with high-frequency than the suspending and standing bracket. Both the utility tunnel and the suspending bracket yielded under the mainshock, but only slight deformations were observed with the model. Finally, the tunnel-ground system was simulated numerically using the FLAC 3D program. The comparison of experimental records with simulated results was carried out for validation of research outputs. The results provide valuable insight into the seismic performance of shallow-buried underground structures and the safe design of prefabricated corrugated steel utility tunnels.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | Prefabricated corrugated steel utility tunnel; Pipelines and brackets; Liquefiable ground; Shaking table test; Numerical simulation |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 23 Mar 2021 17:15 |
Last Modified: | 23 Mar 2021 17:15 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.soildyn.2020.106527 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:172367 |