Journal of Central South University

, Volume 26, Issue 7, pp 1755–1768

# Kinematic analysis of geosynthetics-reinforced steep slopes with curved sloping surfaces and under earthquake regions

• Jian-feng Zhou (周建烽)
• Chang-bing Qin (覃长兵)
• Qiu-jing Pan (潘秋景)
• Cheng-yang Wang (王成洋)
Article

## 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

# 土工网加固的曲线型陡坡在地震区的机动性分析

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© Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

## Authors and Affiliations

• Jian-feng Zhou (周建烽)
• 1
• Chang-bing Qin (覃长兵)
• 2
• Qiu-jing Pan (潘秋景)
• 3
• Cheng-yang Wang (王成洋)
• 3
1. 1.College of Civil EngineeringHuaqiao UniversityXiamenChina
2. 2.Department of Civil & Environmental EngineeringNational University of SingaporeSingaporeSingapore
3. 3.School of Civil EngineeringCentral South UniversityChangshaChina