Numerical Analysis of Seismic Site Effects in Loess Region of Western China under Strong Earthquake Excitations
The Loess Plateau is one of the most tectonically and seismically active areas in the world. Observations from past strong earthquakes, particularly the Minxian–Zhangxian and Wenchuan earthquakes, have shown distinctive evidence of seismic site effects in the mountainous area of southeastern Gansu p...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/3918352 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832566315727978496 |
|---|---|
| author | Tuo Chen Zhijian Wu Yanhu Mu Ping Wang Qiyin Zhu |
| author_facet | Tuo Chen Zhijian Wu Yanhu Mu Ping Wang Qiyin Zhu |
| author_sort | Tuo Chen |
| collection | DOAJ |
| description | The Loess Plateau is one of the most tectonically and seismically active areas in the world. Observations from past strong earthquakes, particularly the Minxian–Zhangxian and Wenchuan earthquakes, have shown distinctive evidence of seismic site effects in the mountainous area of southeastern Gansu province. In this study, seismic damage in the loess areas of southeastern Gansu province induced by these earthquakes was investigated and briefly described. Different types of ground motion were selected, and the one-dimensional equivalent linear method was used for numerical analysis of the ground motion effects in the loess regions. Moreover, seismic response analysis of a typical loess tableland was conducted. The results showed that the seismic responses of a typical loess tableland under different seismic excitations have totally different dynamic characteristics. Moreover, the seismic damage in loess regions was more serious under far-field seismic excitation compared with near-field seismic excitation with the same peak acceleration. Through this study, the quantitative assessment of ground motion effects can be approximately estimated and the mechanism of site amplification effects on ground motion is further explained. |
| format | Article |
| id | doaj-art-056c9e234317423689c8b89fb417e8c2 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-056c9e234317423689c8b89fb417e8c22025-02-03T01:04:22ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/39183523918352Numerical Analysis of Seismic Site Effects in Loess Region of Western China under Strong Earthquake ExcitationsTuo Chen0Zhijian Wu1Yanhu Mu2Ping Wang3Qiyin Zhu4State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaCollege of Transportation Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 210009, ChinaState Key Laboratory of Frozen Soil Engineering, Chinese Academy of Sciences, Lanzhou 730000, ChinaLanzhou Institute of Seismology, CEA, Lanzhou 730000, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaThe Loess Plateau is one of the most tectonically and seismically active areas in the world. Observations from past strong earthquakes, particularly the Minxian–Zhangxian and Wenchuan earthquakes, have shown distinctive evidence of seismic site effects in the mountainous area of southeastern Gansu province. In this study, seismic damage in the loess areas of southeastern Gansu province induced by these earthquakes was investigated and briefly described. Different types of ground motion were selected, and the one-dimensional equivalent linear method was used for numerical analysis of the ground motion effects in the loess regions. Moreover, seismic response analysis of a typical loess tableland was conducted. The results showed that the seismic responses of a typical loess tableland under different seismic excitations have totally different dynamic characteristics. Moreover, the seismic damage in loess regions was more serious under far-field seismic excitation compared with near-field seismic excitation with the same peak acceleration. Through this study, the quantitative assessment of ground motion effects can be approximately estimated and the mechanism of site amplification effects on ground motion is further explained.http://dx.doi.org/10.1155/2020/3918352 |
| spellingShingle | Tuo Chen Zhijian Wu Yanhu Mu Ping Wang Qiyin Zhu Numerical Analysis of Seismic Site Effects in Loess Region of Western China under Strong Earthquake Excitations Shock and Vibration |
| title | Numerical Analysis of Seismic Site Effects in Loess Region of Western China under Strong Earthquake Excitations |
| title_full | Numerical Analysis of Seismic Site Effects in Loess Region of Western China under Strong Earthquake Excitations |
| title_fullStr | Numerical Analysis of Seismic Site Effects in Loess Region of Western China under Strong Earthquake Excitations |
| title_full_unstemmed | Numerical Analysis of Seismic Site Effects in Loess Region of Western China under Strong Earthquake Excitations |
| title_short | Numerical Analysis of Seismic Site Effects in Loess Region of Western China under Strong Earthquake Excitations |
| title_sort | numerical analysis of seismic site effects in loess region of western china under strong earthquake excitations |
| url | http://dx.doi.org/10.1155/2020/3918352 |
| work_keys_str_mv | AT tuochen numericalanalysisofseismicsiteeffectsinloessregionofwesternchinaunderstrongearthquakeexcitations AT zhijianwu numericalanalysisofseismicsiteeffectsinloessregionofwesternchinaunderstrongearthquakeexcitations AT yanhumu numericalanalysisofseismicsiteeffectsinloessregionofwesternchinaunderstrongearthquakeexcitations AT pingwang numericalanalysisofseismicsiteeffectsinloessregionofwesternchinaunderstrongearthquakeexcitations AT qiyinzhu numericalanalysisofseismicsiteeffectsinloessregionofwesternchinaunderstrongearthquakeexcitations |