Seasonal differences in seismic responses of embankment on a sloping ground in permafrost regions
文献类型：期刊论文
| 作者 | Li, Shuangyang; Lai, Yuanming; Zhang, Mingyi; Yu, Wenbing |
| 刊名 | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 76页码:122-135 |
| 关键词 | Embankment on a sloping ground Seasonal difference Seismic response Numerical model Permafrost region |
| ISSN号 | 0267-7261 |
| DOI | 10.1016/j.soildyn.2015.01.005 |
| 通讯作者 | Lai, Yuanming(ymlai@lzb.ac.cn) |
| 英文摘要 | Because of its direct influence on the amount of unfrozen water and on the strength of intergranular ice in a frozen soil, temperature has a significant effect on all aspects of the mechanical behavior of the active layer in which temperature fluctuates above and below 0 degrees C. Hence seismic responses of engineering structures such as embankment on a sloping ground in permafrost regions exhibit obvious differences with seasonal alternation. To explore the distinctive seismic characteristics of a railway embankment on the sloping ground in permafrost regions, a coupled water-heat-dynamics model is built based on theories of heat transfer, soil moisture dynamics, frozen soil mechanics, soil dynamics, and so on. A well-monitored railway embankment on a sloping ground in Qinghai-Tibet Plateau is taken as an example to simulate seismic responses in four typical seasons in the 25th service year. The numerical results show that seismic acceleration, velocity and displacement responses are significantly different in four typical seasons, and the responses on October 15 are much higher among the four seasons. When the earthquake is over, there are still permanent differential deformations in the embankment and even severe damages on the left slope on October 15. Therefore, this position should be monitored closely and repaired timely to ensure safe operation. In addition, the numerical model and results may be a reference for maintenance, design and study on other embankments in permafrost regions. (c) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | QINGHAI-TIBET RAILWAY ; MASS-TRANSFER ; COUPLED HEAT ; PLATEAU ; SOILS ; EARTHQUAKE ; TRANSPORT ; MODEL |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Geological ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000357226200012 |
| 出版者 | ELSEVIER SCI LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555575 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Lai, Yuanming |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Shuangyang,Lai, Yuanming,Zhang, Mingyi,et al. Seasonal differences in seismic responses of embankment on a sloping ground in permafrost regions[J]. SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,2015,76:122-135. |
| APA | Li, Shuangyang,Lai, Yuanming,Zhang, Mingyi,&Yu, Wenbing.(2015).Seasonal differences in seismic responses of embankment on a sloping ground in permafrost regions.SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,76,122-135. |
| MLA | Li, Shuangyang,et al."Seasonal differences in seismic responses of embankment on a sloping ground in permafrost regions".SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 76(2015):122-135. |
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来源：寒区旱区环境与工程研究所
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