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Geosynthetics used to stabilize vegetated surfaces for environmental sustainability in civil engineering

Jie HAN,Jun GUO

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1, Pages 56-65 doi: 10.1007/s11709-016-0380-8

Abstract: Geosynthetics, factory-manufactured polymer materials, have been successfully used to solve many geotechnicalGeosynthetics used for erosion control are mostly related to slopes, river channels and banks, and pondUnder such a condition, geosynthetics mainly function as surficial soil stabilization while vegetationGeosynthetics and vegetation are often integrated to provide combined benefits.The interaction between geosynthetics and vegetation is important for the sustainability of the earth

Keywords： erosion geosynthetic stabilization sustainability vegetation

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Seismic effects on reinforcement load and lateral deformation of geosynthetic-reinforced soil walls

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4, Pages 1001-1015 doi: 10.1007/s11709-021-0734-8

Abstract: Current design methods for the internal stability of geosynthetic-reinforced soil (GRS) walls postulate seismic forces as inertial forces, leading to pseudo-static analyses based on active earth pressure theory, which yields unconservative reinforcement loads required for seismic stability. Most seismic analyses are limited to the determination of maximum reinforcement strength. This study aimed to calculate the distribution of the reinforcement load and connection strength required for each layer of the seismic GRS wall. Using the top-down procedure involves all of the possible failure surfaces for the seismic analyses of the GRS wall and then obtains the reinforcement load distribution for the limit state. The distributions are used to determine the required connection strength and to approximately assess the facing lateral deformation. For sufficient pullout resistance to be provided by each reinforcement, the maximum required tensile resistance is identical to the results based on the Mononobe–Okabe method. However, short reinforcement results in greater tensile resistances in the mid and lower layers as evinced by compound failure frequently occurring in GRS walls during an earthquake. Parametric studies involving backfill friction angle, reinforcement length, vertical seismic acceleration, and secondary reinforcement are conducted to investigate seismic impacts on the stability and lateral deformation of GRS walls.

Keywords： geosynthetics reinforced soil retaining walls seismic performance