Dynamic responses of shallow buried composite cylindrical lining embedded in saturated soil under incident P wave based on nonlocal-Biot theory. Issue 121 (June 2019)

• Record Type: Journal Article
• Authors: Ding, H.B.; Tong, L.H.; Xu, C.J.; Zhao, X.S.; Nie, Q.X.
• Is Part Of: Soil dynamics and earthquake engineering. Issue 121(2019)
• Page Start: 40
• Page End: 56
• Publication Date: 2019-06
• Subjects: Nonlocal Biot theory -- Composite lining -- Saturated soil -- Shallow buried tunnel -- Dynamic response; Soil dynamics -- Periodicals; Earthquake engineering -- Periodicals; Sols -- Dynamique -- Périodiques; Génie parasismique -- Périodiques; 624.176205
• DOI: 10.1016/j.soildyn.2019.02.018
• Languages: English
• ISSNs: 0267-7261

Abstract

Abstract: The shallow buried composite lining is frequently used in underground engineering. A model for predicting dynamic response of composite lining in saturated poroelastic medium under incident P wave is proposed based on nonlocal-Biot theory. The analytical solution is obtained using wave function expansion method. The size effect, which is described by the nonlocal parameter, on dynamic stress concentrate of composite lining is studied in detail. Subsequently, the influences of input frequency, incident angle, thickness of composite lining, stiffness of composite lining and the buried depth of the lining on dynamic stress concentrate are elaborated. The distribution pattern of dynamic stress concentrate factor obtained in this work may provide a beneficial guideline for safety design in tunnel engineering. Highlights: A model predicting dynamic response of composite lining in saturated half space is proposed based on nonlocal Biot theory. The influence of nonlocal parameter on dynamic stress concenteate factor of composite lining is investigated in detail. The results in this work can provide a beneficial guideline for safety design in tunnel engineering.