A Dynamic Strain-Rate-Dependent Contact Model and Its Application in Hongshiyan Landslide | Zendy

Chong Shi | Zendy; Wangyang Li | Zendy; Qingxiang Meng | Zendy

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A Dynamic Strain-Rate-Dependent Contact Model and Its Application in Hongshiyan Landslide

Author(s) -

Chong Shi,

Wangyang Li,

Qingxiang Meng

Publication year - 2021

Publication title -

geofluids

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.44

H-Index - 56

eISSN - 1468-8123

pISSN - 1468-8115

DOI - 10.1155/2021/9993693

Subject(s) - landslide , geology , seismic hazard , rockfall , seismology , geotechnical engineering , strain rate , coupling (piping) , scale (ratio) , settlement (finance) , hazard , engineering , computer science , materials science , mechanical engineering , chemistry , physics , organic chemistry , quantum mechanics , world wide web , metallurgy , payment

An earthquake-induced landslide, mainly affected by seismic movement, is a frequent large-scale geological hazard in hydraulic engineering. This paper proposed a rate-dependent strain-softened micromechanical contact model and implemented it in discrete element method code, namely, PFC. Using the PFC-FLAC coupling scheme, the Hongshiyan earthquake landslide is analyzed as a case study. The influence of the strain rate, damping, and topographic effect is discussed. The results indicate that the rate-dependent micromechanical model can give a reasonable seismic-induced failure process compared with the in situ situation and provide a numerical technique for earthquake-induced landslide analysis and rockfall hazard prediction.

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