Failure mechanism of retaining wall in earthquake and its seismic design measure
文献类型：会议论文
| 作者 | Yong Wu ; Xinpo Li; Siming He; Wu Yong; He Siming; Li Xinpo
|
| 出版日期 | 2010 |
| 会议名称 | Proceedings of the 4th International Conference on Environment and Engineering Geophysics |
| 会议日期 | 2010 |
| 会议地点 | 成都 |
| 关键词 | seismic wave failure of retaining wall upper bound theorem energy dissipation flexible protection |
| 页码 | 113-119 |
| 通讯作者 | Yong Wu |
| 中文摘要 | 传统刚性挡墙抗震性能很差，震时极易损毁，致使震后大量挡墙支挡坡体大量失稳破坏。目前有关地震荷载作用下挡墙的失效机理还不清晰，对其与震波间的响应机制也缺乏研究，不能有效解析震波和挡墙体系间的相互作用，也无法提出科学有效的抗震措施。为此，以极限分析的上限定理为工具，从能量角度研究了震时挡墙支挡体系的能量输入与耗散机制，分析了坡体失稳过程和机理。继而在分析导致支挡体系失效的地震荷载特征的基础上，结合柔性防护理论，提出了新型耗能减震挡墙的设计方法和工作机理。最后算例分析表明，传统挡墙因刚性防护而使震波能量集中作用，抗震效果差，通常在特定方向和足够大小的地震荷载反复作用下经损伤和变形累积很快破坏；新型耗能挡墙在允许坡体发生可控内位移的同时，通过EPS减震层的变形来有效的耗散地震波能，可很好的削弱挡墙结构上的地震作用。 |
| 英文摘要 | The failure of retaining wall in earthquake is the main factor that aggravates the harm of mountain hazards. However, the mechanism such as structure’s response to seismic is not clear and can’t resolute the interaction mechanism between anchor system and seismic force, thus no effective aseismic measures can be used in project at present. Therefore, based on energy theory, taken the upper bound theorem as measure, the safety of anchor system is defined, and then the mechanism of input and dissipation of seismic energy is studied. Furthermore, by analyzing the wave characters of destructive earthquake, and according to the flexible retaining theory, an aseismic design of retaining wall is proposed. At last, an example is given and shows the seismic behavior of common rigid retaining wall is poor and the structure fails quickly under big seismic force with specific direction. On the contrary, the new system with EPS damping layer can dissipative seismic energy well. |
| 会议主办者 | Chinese Geophysical Society;National Natural Science Foundation of China;China University of Geosciences(CUG);Chengdu University of Technology(CDUT) |
| 会议录 | Proceedings of the 4th International Conference on Environment and Engineering Geophysics
 |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/7443]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Wu Yong |
| 推荐引用方式 GB/T 7714 | Yong Wu,Xinpo Li,Siming He,et al. Failure mechanism of retaining wall in earthquake and its seismic design measure[C]. 见:Proceedings of the 4th International Conference on Environment and Engineering Geophysics. 成都. 2010. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。