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Seismic Displacement of Slopes Reinforced with Piles |
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| Authors: | Xinpo Li Siming He Yong Wu |
| Affiliation: | 1Research Associate, Institute of Mountain Hazards and Environment and Key Laboratory of Mountain Hazards and Surface Process, CAS, Chengdu 610041, China. E-mail: sinpore@126.com 2Professor, Institute of Mountain Hazards and Environment and Key Laboratory of Mountain Hazards and Surface Process, CAS, Chengdu 610041, China (corresponding author). E-mail: hsm112003@yahoo.com.cn 3Ph.D. Student, Institute of Mountain Hazards and Environment, CAS, Chengdu 610041, China. E-mail: wyhongyu@sohu.com |
| Abstract: | The seismic stability of slopes reinforced with a row of piles is analyzed using the kinematic theorem of limit analysis within the framework of the pseudostatic approach. An existing method which is based on the theory of plasticity is used to determine the lateral forces provided by the piles. Expressions for calculating the yield acceleration coefficient are derived. Then, based on Newmark’s sliding block concept, the permanent displacement induced by an earthquake shocking can be calculated by the integrals of seismic records. An example is investigated to illustrate the validity of this method and the effects of piles on a restraining slope’s dynamic deformation. |
| Keywords: | Limit analysis Seismic effects Displacement Slope stability Piles |