干旱区生态环境知识资源中心(Arid): Diffraction of plane P waves by a circular unlined tunnel in an unsaturated poroelastic half-space

Arid

DOI	10.1007/s42417-024-01487-w
	Diffraction of plane P waves by a circular unlined tunnel in an unsaturated poroelastic half-space
	Zhao, Shuai; Ma, Qiang
通讯作者	Ma, Q
来源期刊	JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES
ISSN	2523-3920
EISSN	2523-3939
出版年	2024
英文摘要	PurposeIn the study of circular unlined tunnel, scholars commonly simplify the foundation to be single-phase or saturated soil. However, such conditions are relatively rare; unsaturated soil remains the predominant state in many areas, particularly in arid and semi-arid zones. Consequently, investigating wave scattering by tunnels in unsaturated soils has significant practical.MethodsBased on the unsaturated porous elastic media theory, the study investigates the plan P-waves scattering of an unlined tunnel within an unsaturated half-space. The analysis employs the Fourier-Bessel series expansion for wave functions for this purpose. Through numerical examples, this study analyzes how physical and mechanical parameters like wave frequency, angle, saturation and burial depth affect the surface displacement amplitude in an unlined tunnel within an unsaturated soil half-space under P-wave incidence.ResultsThe results indicate that the saturation has a significant effect on the change of surface displacement amplitude, and the maximum surface displacement amplitude under unsaturated unlined tunnel is greater than the maximum surface displacement amplitude caused by soil saturation. Under different incident frequencies, the amplitude of surface displacement inside and on the left side of the unlined tunnel changes very sharply and the amplitude is high. The amplitude of surface displacement on the right side of the unlined tunnel is relatively flat and the amplitude is low. This change is more significant when the frequency increases. When the frequency is high, the displacement amplitude of the circular unlined tunnel decreases with the increase of the buried depth. When the incident wave frequency is low, the displacement amplitude of the circular unlined tunnel exhibits a marked change with burial depth increment.ConclusionsThis conclusion promotes the application of fluctuation theory in geotechnical engineering seismic resistance, seismic exploration, and other engineering practices and has significant practical value and guiding significance for actual engineering.
英文关键词	Unsaturated soil Wave propagation Circular unlined tunnel Scattering Plan P wave
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001264661200003
WOS关键词	MULTIPLE IMMISCIBLE FLUIDS ; FUNDAMENTAL-SOLUTIONS ; CONTINUUM THEORY ; ELASTIC-WAVES ; LINED TUNNEL ; SV-WAVES ; SCATTERING ; PROPAGATION
WOS类目	Engineering, Mechanical ; Mechanics
WOS研究方向	Engineering ; Mechanics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404751
推荐引用方式 GB/T 7714	Zhao, Shuai,Ma, Qiang. Diffraction of plane P waves by a circular unlined tunnel in an unsaturated poroelastic half-space[J],2024.
APA	Zhao, Shuai,&Ma, Qiang.(2024).Diffraction of plane P waves by a circular unlined tunnel in an unsaturated poroelastic half-space.JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES.
MLA	Zhao, Shuai,et al."Diffraction of plane P waves by a circular unlined tunnel in an unsaturated poroelastic half-space".JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES (2024).