Time-Domain Analysis for Rayleigh Wave Scattering by Complex Terrain of Alpine Valley

ABSTRACT

In this paper, a time-domain solution for Rayleigh wave scattering from a complex site of Alpine Valley is presented based on the scaled boundary finite element method (SBFEM). Both the near-field region and the far-field region are assumed to be homogeneous, isotropic linear elastomers, where the near-field region is discretized using the quadtree method and the far-field region is simulated with a displacement unit impulse response function. The input of Rayleigh waves is solved by the equivalent loading method. The scattering behavior of seismic waves in alpine valleys is comprehensively analyzed, and the results are of theoretical significance for site safety evaluation and seismic defenses.

KEYWORDS:

• Alpine valley
• composite terrain
• Rayleigh waves
• SBFEM
• terrain effects

Acknowledgments

The authors would like to acknowledge the National Natural Science Foundation of China (Nos. 51978320 and 11962016), which collectively funded this project.

Disclosure Statement

No potential conflict of interest was reported by the author(s).

Author Contributions Statement

Yuwang Liang: Formal analysis, Data curation, Writing – original draft. Fengxi Zhou: Conceptualization, Methodology, review & editing. Xiaolin Cao: reviewing and editing. Yong Wang: reviewing and editing. Rui Luo: reviewing and editing.

Data Availability Statement

Data will be made available on request.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [12362030].