Abstract
Dynamic perturbation is a significant factor to induce dynamic stress concentrations and vibration velocities in underground engineering. The investigation presented in this paper focuses on the transient responses around a deep-buried composite-lined tunnel with imperfect interface between intermediate liner and rock mass. Based on the integral transform and numerical inversion of Laplace transformation, the time-history variations, temporal and spatial evolutions for stress and velocity around the tunnel are explored theoretically. The results indicate that the incident and shadow sidewalls are characterized by tensile stress concentration around the inner boundary, while the roof and floor are compressive stress concentration areas. The radial and hoop elastic coefficients for the interface have an important influence on the dynamic responses around the tunnel and small elastic coefficients lead to more complicated dynamic responses. The results can provide theoretical basis for the support of underground lined tunnels.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
