自然科学版 英文版
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中南大学学报(英文版)

Journal of Central South University

Vol. 26    No. 7    July 2019

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Kinematic analysis of geosynthetics-reinforced steep slopes with curved sloping surfaces and under earthquake regions
ZHOU Jian-feng(周建烽)1, QIN Chang-bing(覃长兵)2, PAN Qiu-jing(潘秋景)3, WANG Cheng-yang(王成洋)3

1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China;
2. Department of Civil & Environmental Engineering, National University of Singapore,
Singapore 117576, Singapore;
3. School of Civil Engineering, Central South University, Changsha 410075, China

Abstract:A procedure of kinematic analysis is presented in this study to assess the reinforcement force of geosynthetics required under seismic loadings, particularly for steep slopes which are hardly able to maintain its stability. Note that curved sloping surfaces widely exist in natural slopes, but existing literatures were mainly focusing on a planar surface in theoretical derivation, due to complicated calculations. Moreover, the non-uniform soil properties cannot be accounted for in conventional upper bound analysis. Pseudo-dynamic approach is used to represent horizontal and vertical accelerations which vary with time and space. In an effort to resolve the above problems, the discretization technique is developed to generate a discretized failure mechanism, decomposing the whole failure block into various components. An elementary analysis permits calculations of rates of work done by external and internal forces. Finally, the upper bound solution of the required reinforcement force is formulated based on the work rate-based balance equation. A parametric study is carried out to give insights on the implication of influential factors on the performance of geosynthetic-reinforced steep slopes.

 

Key words: earthquakes; pseudo-dynamic approach; discretization-based kinematic analysis; geosynthetics; steep slopes

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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