Behavior of the geotextile reinforced dykes on sand-overlying-clay deposit

Frontiers in Marine Science

Marine Science

Mi Zhou¹  Shuaidong Yang²  Xiaoliang Wang³  Wei Liao⁴  Shengzhen Zhuang⁴  Xihong Zhang⁵ 

[1]Associate professor (PhD), School of Marine Science and Engineering, State Key Laboratory of Subtropical Building Science, South China Institute of Geotechnical Engineering, South China University of Technology, Guangzhou, China

[2]College of water Conservancy and Hydropower Engineering, Hohai University, Nanjing, China

[3]Hydraulic Engineering Research Institute, Pearl River Water Resources Research Institute, Guangzhou, China

[4]Engineering Business Department, Guangzhou Construction Engineering Corporation Limited, Guangzhou, China

[5]Earthquake Engineering Research & Test Center, Guangzhou University, Guangzhou, China

[6]Research Assistance, State Key Laboratory of Subtropical Building Science, South China Institute of Geotechnical Engineering, South China University of Technology, Guangzhou, China

[7]School of Civil and Mechanical Engineering, Curtin University, Bentley, PH, Australia

关键词: geotextile reinforced dyke;    layered clay;    stability;    failure mechanism;    safety factor (FS);   

DOI  :  10.3389/fmars.2023.1070900

 received in 2022-10-19, accepted in 2023-01-10,  发布年份 2023

来源: Frontiers

【 摘 要 】

An extensive investigation on the performance of large geotextile mat dykes on stiff-over-soft soil deposits is carried out undertaken through numerical simulation in this paper. The large mat is reinforced by geotextiles with a new type of arrangement, i.e. non-uniform geotextile reinforcement. The numerical model is validated against centrifuge test data and other previously testing results, prior to conduct parametric study. It is found that large geotextile reinforced dykes on sand overlying clay fails through a global mechanism that the whole dam sank downwards together. It is found that the thickness of the sand layer, the width of the dyke base, and the shear strength of soft clay are the key influence factors on the stability of the dyke. A design flow chart is then proposed to quantity the performance of the geotextile mat dyke with non-uniform reinforcement, in terms of predicting allowable dyke fill height and the corresponding safety factor, which can be employed to provide refer for its design and construction.

【 授权许可】

Unknown   
Copyright © 2023 Yang, Liao, Wang, Zhou, Zhang and Zhuang