Scattering of Harmonic Plane SV-wave around an Unlined Pipeline in a Half-space of Saturated Soil

摘要：

　　In terms of Biot’s dynamic theory,the multi-polar coordinate and complex function are used to put forward an approximate analysis method for scattering and dynamic stress concentration of harmonic plane SV-waves around a circular unlined pipeline in half space of saturated soil.Here,a circular cavity with large radius is used to replace the straight boundary of the half space of saturated soil.By using the theory of Helmholtz,the general solutions of the Biot’s wave functions are given,and a system of infinite linear algebraic equations for the problem studied in this paper are generated by means of the complex series expansion technology and the boundary conditions of the solid matrix and the fluid.This research also presents the variation of the coefficient of dynamic stress concentration at boundaries of the unlined pipeline with different parameter conditions.The results of the given examples indicate that the method used in this paper is useful and efficient to the scattering and dynamic stress concentration of harmonic plane SV-wave around the Unlined Pipeline in a Half-space of Saturated Soil.

关键词： Half-space Multi-polar Saturated soil Harmonic plane SV-wave Scattering Complex function Unlined pipeline

作者: Lingfa Jiang Shudan Xiong Tongbing Lei Shanxiong Chen

作者单位: Associate professor, State Key laboratory of Geomechanics and Geotechnical Engineering, Institute of Master; State Key laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soi Professor, State Key laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and

会议类型: 国际会议

会议名称: 第四十届国际海事委员会会议

会议地点: 北京

会议语种:英文

页码: 794-804

在线出版日期: 2012-10-14（万方平台首次上网日期，不代表论文的发表时间）