Seismic response and damage model analysis of rocky slopes with weak interlayers
A large-scale shaking table test of an anti-dip rock slope with a weak interlayer is conducted based on the Hongshiyan landslide induced by the Ludian earthquake. The dynamic failure mode energy damage identification method is analyzed using the Hilbert–Huang transformation and marginal spectrum the...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2025-01-01
|
| Series: | Open Geosciences |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/geo-2022-0621 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832593693571284992 |
|---|---|
| author | Zhao Yawen Dong Jinyu Liu Handong Wang Chuang |
| author_facet | Zhao Yawen Dong Jinyu Liu Handong Wang Chuang |
| author_sort | Zhao Yawen |
| collection | DOAJ |
| description | A large-scale shaking table test of an anti-dip rock slope with a weak interlayer is conducted based on the Hongshiyan landslide induced by the Ludian earthquake. The dynamic failure mode energy damage identification method is analyzed using the Hilbert–Huang transformation and marginal spectrum theory. The result shows that the weak interlayer under horizontal loading amplifies the 5–10 and 25–30 Hz frequency signal and attenuates the 15–20 Hz signal. Within the hard rock, it amplifies the 5–15 Hz frequency signal and attenuates the 20–30 Hz signal. Under vertical loading, both weak interlayer and hard rock have an amplification effect on 5–30 Hz signal, and the amplification effect of weak interlayer is more significant. The horizontal seismic wave slope damage process can be divided into two stages: internal damage and obvious failure. When the horizontal seismic input amplitude reaches 0.2–0.3 g, internal damage occurs in the slope. The slope damage is primarily concentrated below two-third of the hard rock height and primarily in the shallow and surface regions of the slope. An input amplitude in the range of 0.4–0.5 g corresponds to the obvious failure stage. At this time, the slope first undergoes an obvious rupture in the rock above the weak layer; this rupture then extends upward to the top of the slope. Marginal spectral analysis results are consistent with the field model slope macroscopic rupture phenomenon. |
| format | Article |
| id | doaj-art-9d58f57800b24c758fd67c77da9fafeb |
| institution | Kabale University |
| issn | 2391-5447 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Geosciences |
| spelling | doaj-art-9d58f57800b24c758fd67c77da9fafeb2025-01-20T11:08:37ZengDe GruyterOpen Geosciences2391-54472025-01-011714334410.1515/geo-2022-0621Seismic response and damage model analysis of rocky slopes with weak interlayersZhao Yawen0Dong Jinyu1Liu Handong2Wang Chuang3North China University of Water Resources and Electric Power, Zhengzhou, 450045, Henan, ChinaNorth China University of Water Resources and Electric Power, Zhengzhou, 450045, Henan, ChinaNorth China University of Water Resources and Electric Power, Zhengzhou, 450045, Henan, ChinaNorth China University of Water Resources and Electric Power, Zhengzhou, 450045, Henan, ChinaA large-scale shaking table test of an anti-dip rock slope with a weak interlayer is conducted based on the Hongshiyan landslide induced by the Ludian earthquake. The dynamic failure mode energy damage identification method is analyzed using the Hilbert–Huang transformation and marginal spectrum theory. The result shows that the weak interlayer under horizontal loading amplifies the 5–10 and 25–30 Hz frequency signal and attenuates the 15–20 Hz signal. Within the hard rock, it amplifies the 5–15 Hz frequency signal and attenuates the 20–30 Hz signal. Under vertical loading, both weak interlayer and hard rock have an amplification effect on 5–30 Hz signal, and the amplification effect of weak interlayer is more significant. The horizontal seismic wave slope damage process can be divided into two stages: internal damage and obvious failure. When the horizontal seismic input amplitude reaches 0.2–0.3 g, internal damage occurs in the slope. The slope damage is primarily concentrated below two-third of the hard rock height and primarily in the shallow and surface regions of the slope. An input amplitude in the range of 0.4–0.5 g corresponds to the obvious failure stage. At this time, the slope first undergoes an obvious rupture in the rock above the weak layer; this rupture then extends upward to the top of the slope. Marginal spectral analysis results are consistent with the field model slope macroscopic rupture phenomenon.https://doi.org/10.1515/geo-2022-0621weak interlayeranti-dip rock slopehilbert–huang transformseismic responsemarginal spectrumenergy damage identification |
| spellingShingle | Zhao Yawen Dong Jinyu Liu Handong Wang Chuang Seismic response and damage model analysis of rocky slopes with weak interlayers Open Geosciences weak interlayer anti-dip rock slope hilbert–huang transform seismic response marginal spectrum energy damage identification |
| title | Seismic response and damage model analysis of rocky slopes with weak interlayers |
| title_full | Seismic response and damage model analysis of rocky slopes with weak interlayers |
| title_fullStr | Seismic response and damage model analysis of rocky slopes with weak interlayers |
| title_full_unstemmed | Seismic response and damage model analysis of rocky slopes with weak interlayers |
| title_short | Seismic response and damage model analysis of rocky slopes with weak interlayers |
| title_sort | seismic response and damage model analysis of rocky slopes with weak interlayers |
| topic | weak interlayer anti-dip rock slope hilbert–huang transform seismic response marginal spectrum energy damage identification |
| url | https://doi.org/10.1515/geo-2022-0621 |
| work_keys_str_mv | AT zhaoyawen seismicresponseanddamagemodelanalysisofrockyslopeswithweakinterlayers AT dongjinyu seismicresponseanddamagemodelanalysisofrockyslopeswithweakinterlayers AT liuhandong seismicresponseanddamagemodelanalysisofrockyslopeswithweakinterlayers AT wangchuang seismicresponseanddamagemodelanalysisofrockyslopeswithweakinterlayers |