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Transient response of a concrete tunnel in an elastic rock with imperfect contact
International Journal of Mining Science and Technology ( IF 11.8 ) Pub Date : 2020-06-16 , DOI: 10.1016/j.ijmst.2020.05.008
R. Shakeri , A. Mesgouez , G. Lefeuve-Mesgouez

The two-dimensional transient response of an imperfect bonded circular lined pipeline lying in an elastic infinite medium is investigated. Imperfect boundary conditions between the surrounding elastic rock and the tunnel are modelled with a two-linear-spring design. The novelty of the manuscript consists in studying at the same time transient regimes and imperfect bonded interfaces for simulating the dynamic response of a tunnel embedded in an elastic infinite rock. Wave propagation fields in tunnel and rock are expressed in terms of infinite Bessel and Hankel series. To solve the transient problem, the Laplace transform and the associated Durbin’s algorithm are performed. To exhibit the dynamic responses, influences of various parameters such as the quality of the interface conditions and the thickness of the lining are presented. The dynamic hoop stresses and the solid displacements of both the tunnel and the rock are also proposed.



中文翻译:

接触不良的弹性岩石中混凝土隧道的瞬态响应

研究了位于弹性无限介质中的不完全粘结圆形管道的二维瞬态响应。弹性岩石与隧道之间的边界条件不完善时,采用了两线弹簧设计。该手稿的新颖性在于同时研究瞬态状态和不完善的粘结界面,以模拟嵌在弹性无限岩石中的隧道的动力响应。隧道和岩石中的波传播场用无限贝塞尔和汉克尔级数表示。为了解决瞬态问题,执行了Laplace变换和相关的Durbin算法。为了表现出动态响应,提出了各种参数的影响,例如界面条件的质量和衬里的厚度。

更新日期:2020-06-16
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