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.
Original language | English |
---|---|
Title of host publication | Environmental Vibrations and Transportation Geodynamics |
Subtitle of host publication | ISEV 2016, Hangzhou China |
Editors | Xuecheng Bian, Yunmin Chen, Xiaowei Ye |
Place of Publication | Singapore |
Publisher | Springer |
Pages | 369-388 |
Number of pages | 20 |
Edition | 212039 |
ISBN (Electronic) | 978-981-10-4508-0 |
ISBN (Print) | 9789811045073 |
DOIs | |
Publication status | Published - 2018 |
Event | 7th international symposium on environmental vibration and transportation geodynamics - Zhejiang University, Hangzhou, China Duration: 28 Oct 2016 → 30 Oct 2016 Conference number: 7 http://www.isev2016.org/ |
Conference
Conference | 7th international symposium on environmental vibration and transportation geodynamics |
---|---|
Abbreviated title | ISEV2016 |
Country/Territory | China |
City | Hangzhou |
Period | 28/10/16 → 30/10/16 |
Internet address |
Bibliographical note
Accepted Author ManuscriptKeywords
- Three-dimensional wave propagation
- dynamic soil-structure interaction
- Underground structure
- conformal mapping
- steady state dynamic response
- semi-analytical solution