Print Email Facebook Twitter Semi-analytical solution for the dynamic response of a cylindrical structure embedded in a homogeneous half-space Title Semi-analytical solution for the dynamic response of a cylindrical structure embedded in a homogeneous half-space Author Zhao, M. (TU Delft Applied Mechanics; TU Delft Dynamics of Structures) van Dalen, K.N. (TU Delft Dynamics of Structures) de Oliveira Barbosa, J.M. (TU Delft Dynamics of Structures) Metrikine, A. (TU Delft Offshore Engineering; TU Delft Engineering Structures) Contributor Bian, Xuecheng (editor) Chen, Yunmin (editor) Ye, Xiaowei (editor) Department Engineering Structures Date 2018 Abstract This paper addresses the dynamic response of an infinitely long cylindrical structure embedded in an elastic half-space. The structure has a circular cross-section and its axis is parallel to the half-space surface. Excitation can be incident body waves or forces applied on the surface of the half-space and/or the structure. The model can be used to assess the integrity of structures when acted upon by seismic waves, to predict ground-borne vibration due to circulation of vehicles, and to infer about the safety of vehicles during earthquake events. Because the half-space and the structure surfaces possess different symmetries, the solution is not straightforward. In order to circumvent this difficulty, the physical domain is conformally mapped onto an auxiliary domain with a cylindrical symmetry, in which the free surface of the half-space and the surface of the structure are located at concentric cylindrical surfaces. The solution of the original boundary value problem is finally obtained by solving a set of algebraic equations. Truncation of the summation over circumferential modes is needed in the numerical implementation. Convergence tests, validations and comparisons of stresses and motions for twoand three-dimensional cases are presented and discussed as well as the advantages and disadvantages of the proposed method. Additionally, the effect of the presence of the tunnel is analysed by considering a limiting case of the half-space with just a cylindrical cavity of the same radius as the outer radius of the tunnel. Subject Three-dimensional wave propagationdynamic soil-structure interactionUnderground structureconformal mappingsteady state dynamic responsesemi-analytical solution To reference this document use: http://resolver.tudelft.nl/uuid:ec7a2cd7-c75a-4441-8bc9-7b72120dec43 DOI https://doi.org/10.1007/978-981-10-4508-0_35 Publisher Springer, Singapore ISBN 9789811045073 Source Environmental Vibrations and Transportation Geodynamics: ISEV 2016, Hangzhou China (212039) Event 7th international symposium on environmental vibration and transportation geodynamics, 2016-10-28 → 2016-10-30, Zhejiang University, Hangzhou, China Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type conference paper Rights © 2018 M. Zhao, K.N. van Dalen, J.M. de Oliveira Barbosa, A. Metrikine Files PDF Untitled.pdf 1.33 MB Close viewer /islandora/object/uuid:ec7a2cd7-c75a-4441-8bc9-7b72120dec43/datastream/OBJ/view