Evolution of pullout behavior of geocell embedded in sandy soil

Yang Zhao , Zheng Lu , Jie Liu , Jingbo Zhang , Chuxuan Tang , Hailin Yao

Abstract

This paper aims to explore the evolution of the pullout behavior of geocell reinforcement insights from three-dimensional numerical studies. Initially, a developed model was validated with the model test results. The horizontal displacement of geocells and infill sand and the passive resistance transmission in the geocell layer were analyzed deeply to explore the evolution of geocell pullout behavior. The results reveal that the pullout behavior of geocell reinforcement is the pattern of progressive deformation. The geocell pockets are gradually mobilized to resist the pullout force. The vertical walls provide passive pressure, which is the main contributor to the pullout force. Hence, even if the frontal displacement (FD) is up to 90m mm, only half of the pockets are mobilized. Furthermore, the parametric studies, orthogonal analysis, and the building of the predicted model were also carried out to quantitative the geocell pullout behavior. The weights of influencing factors were ranked. Ones can calculate the pullout force accurately by inputting the aspect ratio, geocell modulus, embedded length, frontal displacement, and normal stress.

Key Words

geocells; geosynthetics; predicted mode; pullout resistance

Address

Yang Zhao — State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; Xinjiang Transportation Planning Survey and Design Institute Co., Ltd., Urumqi 830006, China
Zheng Lu — State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; Hubei Key Laboratory of Geo-Environmental Engineering, Wuhan 430071, China
Jie Liu — Xinjiang Transportation Planning Survey and Design Institute Co., Ltd., Urumqi 830006, China
Jingbo Zhang — CCCC Second Highway Consultants Co., Ltd., Wuhan, 430056, China
Chuxuan Tang — State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; University of Chinese Academy of Sciences, Beijing 100049, China
Hailin Yao — State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

PDF Viewer

Preview is limited to the first 3 pages. Sign in to access the full PDF.

← Back to Volume 38, No. 3