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  3. 土木工程學系
Please use this identifier to cite or link to this item: https://scholars.lib.ntu.edu.tw/handle/123456789/503708
Title: Performance of geosynthetic-reinforced soil foundations across a normal fault
Authors: Yang, KH 
Chiang, J
Lai, CW
Han, J
Lin, ML 
Keywords: Geosynthetics; Geosynthetic-reinforced soil foundation; Normal fault; Differential settlement; Angular distortion
Issue Date: 2020
Publisher: ELSEVIER SCI LTD
Journal Volume: 48
Journal Issue: 3
Start page/Pages: 357
Source: GEOTEXTILES AND GEOMEMBRANES
Abstract: 
© 2019 Elsevier Ltd This paper presents a series of model tests on geosynthetic-reinforced soil (GRS) foundations across a normal fault. The aim was to evaluate the performance of reinforced foundations as a mitigation measure for surface faulting hazards. Experimental tests modeled a 3-m thick foundation in prototype subjected to a fault displacement up to 90 cm. Test variables included the number of reinforcement layers, reinforcement stiffness and location, and foundation height. Digital image analysis techniques were applied to determine the ground settlement profile, angular distortion, shear rupture propagation, and mobilized reinforcement tensile strain at various magnitudes of fault offset. Test results revealed that compared with the unreinforced foundation, reinforcement inclusion could effectively prevent the shear rupture propagating from the bedrock fault to the ground surface. It also spread the differential settlement to a wider influential zone, resulting in an average reduction of 60% in the fault-induced angular distortion at the ground surface. The maximum angular distortion decreased as the foundation height, number of reinforcement layers, and reinforcement stiffness increased. Relationships between the maximum angular distortion and maximum mobilized reinforcement tensile strain with fault displacement were therefore established. Based on the findings from this study, design suggestions and implications are discussed.
URI: https://scholars.lib.ntu.edu.tw/handle/123456789/503708
ISSN: 0266-1144
DOI: 10.1016/j.geotexmem.2019.12.007
Appears in Collections:土木工程學系

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To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of “NTU Repository” with “Academic Hub” to form NTU Scholars.

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