Effect of near-fault ground motions with long-period pulses on the tunnel
文献类型：期刊论文
| 作者 | Zhao, Wu-Sheng; Chen, Wei-Zhong |
| 刊名 | JOURNAL OF VIBROENGINEERING
 |
| 出版日期 | 2015 |
| 卷号 | 17期号:2页码:841-858 |
| 关键词 | near-fault tunnel directivity effect fling effect parametric study |
| ISSN号 | 1392-8716 |
| 英文摘要 | Investigations from recent strong earthquakes indicate most of the tunnels severely damaged are located near the causative faults. First, the dynamic response of the tunnel to the near-fault and far-field ground motions was investigated. The results show that the near-fault motions with long-period pulses especially the forward directivity pulses are more damaging than the typical far-field records, which should be reflected in the seismic design guideline for tunnels near causative faults. Furthermore, the effects of the key parameters for the simplified pulse on the dynamic response of the tunnel were also studied. Generally, the pulse with larger amplitude brings more energy and leads to larger strains in rock. Consequently, it becomes more damaging to the tunnel. The period of the pulse can remarkably influence the response of the tunnel. When the period of the pulse is less than 3.0 s, the pulse becomes less damaging to the tunnel with the increase of the period. Once the period exceeds 3.0 s, the pulse has little effect on the dynamic response of the tunnel. Thus, the earthquake with lower magnitude, which is likely to leads to lower period, may be more damaging to the tunnel. Besides, as the number of significant cycles increases, the damage potential of the ground motions increases accordingly. For the sake of security, two significant cycles in velocity-time history are recommended for the seismic design of tunnels close to ruptured faults. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000352453600023 |
| 出版者 | JOURNAL VIBROENGINEERING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3699]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech |
| 推荐引用方式 GB/T 7714 | Zhao, Wu-Sheng,Chen, Wei-Zhong. Effect of near-fault ground motions with long-period pulses on the tunnel[J]. JOURNAL OF VIBROENGINEERING,2015,17(2):841-858. |
| APA | Zhao, Wu-Sheng,&Chen, Wei-Zhong.(2015).Effect of near-fault ground motions with long-period pulses on the tunnel.JOURNAL OF VIBROENGINEERING,17(2),841-858. |
| MLA | Zhao, Wu-Sheng,et al."Effect of near-fault ground motions with long-period pulses on the tunnel".JOURNAL OF VIBROENGINEERING 17.2(2015):841-858. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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