Seismic damage mechanism of bedrock and overburden layer slope reinforced by sheet pile wall
Seismic damage mechanism of bedrock and overburden layer slope reinforced by sheet pile wall
复制标题
板桩墙加固基岩及覆盖层边坡地震破坏机理
DOI：
10.1093/jge/gxz032
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发表时间：
2019-08
影响因子：
1.4
通讯作者：
Qian Mei
中科院分区：
文献类型：
--
作者：
Honglue Qu;Chenxu Wang;Gulan Zhang;Ying Liu;Hao Luo;Qian Mei
板桩墙广泛应用于滑坡治理工程，在汶川大地震中表现出良好的抗震性能，对挡土墙震害的调查表明。为进一步了解地震损伤机理，基于Hilbert-Huang变换方法和边际谱识别理论，对板桩墙加固基岩和覆盖层边坡进行了大型振动台试验，分析了地震损伤机理。结果表明，边际谱幅值和特征频率的变化可以清晰地反映边坡土体的地震破坏程度。①板桩墙附近边坡土体的动力响应小于离墙较远土体的动力响应，离墙较远土体的震害程度相对较弱；其次，地震波的能量不能完全传递到墙后，可以确定墙后土体的条状裂缝。最后，坡土沿滑面滑动，由于坡后边缘的垂直拉伸裂缝，使坡前边缘受到挤压。此外，研究结果证实了Hilbert-Huang变换方法用于研究结构-土耦合体系地震损伤机理的可行性。
Sheet pile walls, widely used in landslide control projects, have demonstrated excellent seismic performance during the great Wenchuan earthquake, as indicated by an investigation of retaining walls following earthquake damage. To further understand the mechanism of seismic damage based on the Hilbert–Huang transform method and marginal spectrum identification theory, a large-scale shaking table test of bedrock and overburden layer slope reinforced by sheet pile wall was carried out, and the mechanism of seismic damage was analysed. The results show that the change in marginal spectrum amplitude and characteristic frequency can clearly indicate the degree of seismic damage to the slope soil. First, the dynamic response of the slope soil near sheet pile wall is smaller than the response observed in soil farther from the wall, and the degree of seismic damage near the wall is relatively weaker than that farther away from the wall. Second, the energy of the seismic wave cannot be completely transferred behind the wall, and the strip cracks of soil behind the wall can be determined. Finally, the slope soil slides along a slip surface so that the front edge of the slope is squeezed due to the vertical tensile cracks at the rear edge. In addition, the results confirm the feasibility of the Hilbert–Huang transform method for studying the mechanism of the seismic damage to the structure-soil coupling system.
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影响因子：
6.2
作者：
Fan, Gang;Zhang, Jianjing;Yan, Kongming
通讯作者：
Yan, Kongming
影响因子：
5.2
作者：
G. Madhavi Latha;P. Santhanakumar
通讯作者：
G. Madhavi Latha;P. Santhanakumar
DOI：
10.1080/17486020601039170
发表时间：
2006-12
期刊：
Geomechanics and Geoengineering
影响因子：
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作者：
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通讯作者：
S. Madabhushi;X. Zeng
影响因子：
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作者：
Hong-yu Jia;Jingang Zhao;Xi Li;Lanping Li;Shixiong Zheng
通讯作者：
Hong-yu Jia;Jingang Zhao;Xi Li;Lanping Li;Shixiong Zheng
影响因子：
5.8
作者：
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通讯作者：
L. Masini;L. Callisto;S. Rampello