DOI: 10.1016/j.geotexmem.2019.103527
论文题名: Centrifuge tests to investigate global performance of geosynthetic-reinforced pile-supported embankments with side slopes
作者: Shen P. ; Xu C. ; Han J.
刊名: Geotextiles and Geomembranes
ISSN: 2661144
出版年: 2020
卷: 48, 期: 1 语种: 英语
英文关键词: Centrifuge test
; Embankment
; Geosynthetics
; Pile
; Settlement
; Soil arching
; Strain
Scopus关键词: Centrifuges
; Embankments
; Geosynthetic materials
; Reinforcement
; Settlement of structures
; Soils
; Strain
; Centrifuge model test
; Centrifuge tests
; Foundation settlement
; Geosynthetic reinforced pile-supported embankments
; Geosynthetics
; Normalized displacements
; Settlement
; Soil arching
; Piles
; arching
; centrifugal model test
; embankment
; geogrid
; ground settlement
; pile
; slope
; spacing
; strain
英文摘要: Three centrifuge model tests were conducted to investigate the influence of the number of geosynthetic layers and the pile clear spacing on the global performance of Geosynthetic-Reinforced Pile-Supported (GRPS) embankments with side slopes constructed on soft soil foundations. This study found that the change of the geogrid number from one to two did not significantly affect the foundation settlement, the geogrid deflection, and the vertical stress at the embankment base. For the GRPS embankment with a single geogrid layer, the geogrid strain distribution at the embankment base showed an “M” shape along the transverse direction with the maximum strain near the embankment shoulder. When two geogrid layers with sand in between were used, the upper and lower layers showed different strain distributions with the maximum strains happening near the embankment shoulder and at the center of the embankment for the upper and lower layers respectively. The strains of the upper geogrid were smaller than those of the lower geogrid. Smaller pile clear spacing reduced the geogrid deflection and the foundation settlement. Despite the change of the pile clear spacing, the progressive development of soil arching with the normalized displacement at the embankment base followed a similar trend without an obvious stress recovery stage. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159599
Appears in Collections: 气候变化与战略
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作者单位: Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, 200092, China; Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai, 200092, China; The University of Kansas, CEAE Department, Lawrence, KS 66045, United States
Recommended Citation:
Shen P.,Xu C.,Han J.. Centrifuge tests to investigate global performance of geosynthetic-reinforced pile-supported embankments with side slopes[J]. Geotextiles and Geomembranes,2020-01-01,48(1)