Analysis of Dynamic Response of Soil Slope Reinforced by Anchors and Lattices Subjected to Dynamic Loads(PDF)
《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]
- Issue:
- 2015年第05期
- Page:
- 93-100
- Research Field:
- 工程地质
- Publishing date:
Info
- Title:
- Analysis of Dynamic Response of Soil Slope Reinforced by Anchors and Lattices Subjected to Dynamic Loads
- Author(s):
- HAO Jian-bin; YAO Jie; HUANG Yu-ting; LI Jin-he
- School of Geology Engineering and Geomatics, Chang’an University, Xi’an 710054, Shaanxi, China
- Keywords:
- slope stability; earthquake; sinusoidal wave; dynamic response; shaking table test; anchor; lattice
- PACS:
- TU476;P64
- DOI:
- -
- Abstract:
- Seismic slope stability is one of the key topics in geotechnical engineering and earthquake engineering. In order to study the dynamic response of homogeneous soil slope supported by anchors and lattices under seismic loading. Based on the shaking table test, the seismic acceleration, velocity and displacement of slope and the failure of supporting structures at different heights were analyzed, and the deformation and failure mechanisms of homogeneous soil slope and its supporting structures under seismic load were discussed. The results show that the nature frequency of slope model decreases with the increase of vibration time; the response of acceleration is maximum at the upper of slope subjected to dynamic load with low frequency, and the amplification effect decreases with the increase of vibrational frequency, that is, the slope has amplification effect on vibration waves at low frequency, and has filtering effect at high frequency; though the whole velocity of slope is large at low frequency, the velocities at different heights of slope are almost the same, so that there is no obvious failure happened to the slope and its supporting structures; when vibrational frequency is close to nature frequency of slope model, the velocity is maximum at the upper of slope and minimum at the bottom, and the failure is significant; the deformation types of landslide body subjected dynamic loads include rotation displacement and horizontal displacement, and the upper relative displacement between the active and the resistant parts of slope is large; when the supporting structures destroy, the top-row and mid-row anchors are pulled out, and the upper lattices bump seriously; though the slope shakes back and forth, there is relative displacement; the upper anchors are lengthened appropriately, and the middle and upper lattices are strengthened for the design of the supporting structures.
Last Update: 2015-09-28