Reinforcement Strain and Potential Failure Surface of Geogrid Reinforced Soil-Retaining Wall under Horizontal Seismic Loading
This paper presents experimental results from shaking table tests on two reduced-scale geogrid reinforced soil-retaining walls (RSRWs) constructed using standard soil, modular facing blocks, and uniaxial geogrid reinforcement to investigate the distribution of the geogrid strain and the mode of pote...
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2020-01-01
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Series: | Shock and Vibration |
Online Access: | http://dx.doi.org/10.1155/2020/8864256 |
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doaj-9b6a0ea0c51b4edba33bc13c23384c0c2020-11-25T04:03:27ZengHindawi LimitedShock and Vibration1875-92032020-01-01202010.1155/2020/88642568864256Reinforcement Strain and Potential Failure Surface of Geogrid Reinforced Soil-Retaining Wall under Horizontal Seismic LoadingSihan Li0Xiaoguang Cai1Liping Jing2Honglu Xu3Xin Huang4Chen Zhu5Key Laboratory of Earthquake Engineering and Engineering VibrationCollege of Geological EngineeringKey Laboratory of Earthquake Engineering and Engineering VibrationCollege of Geological EngineeringKey Laboratory of Earthquake Engineering and Engineering VibrationCollege of Geological EngineeringThis paper presents experimental results from shaking table tests on two reduced-scale geogrid reinforced soil-retaining walls (RSRWs) constructed using standard soil, modular facing blocks, and uniaxial geogrid reinforcement to investigate the distribution of the geogrid strain and the mode of potential failure surface for dynamic loading conditions. Similitude relationships for shaking table tests in a 1 g gravitational field were used to scale the specimen geometry, applied characteristics of the earthquake motions. The lateral displacement of the top model is sufficiently large for the top-model block to fall down, and the RSRW is thus destroyed. The tensile strain at the lower part is greater than that at the upper part of the RSRW. The tensile strain in different layers for two-tiered RSRW is consistent with single-step RSRW. On comparing the measured maximum tensile strain lines of the geogrid with the result of the existing calculation method of the potential failure surface, it can be observed that the existing partial calculation method is conservative. Based on the calculation methods of various potential failure surfaces and the measured data, the use of a two-tiered fold-line failure surface is proposed for the two-tiered RSRW while taking into consideration the width of the platform. And it is advised that the failure surface calculation method of BS8006 be used as the calculation method for the potential failure surface of the single-step RSRW under dynamic motion.http://dx.doi.org/10.1155/2020/8864256 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sihan Li Xiaoguang Cai Liping Jing Honglu Xu Xin Huang Chen Zhu |
spellingShingle |
Sihan Li Xiaoguang Cai Liping Jing Honglu Xu Xin Huang Chen Zhu Reinforcement Strain and Potential Failure Surface of Geogrid Reinforced Soil-Retaining Wall under Horizontal Seismic Loading Shock and Vibration |
author_facet |
Sihan Li Xiaoguang Cai Liping Jing Honglu Xu Xin Huang Chen Zhu |
author_sort |
Sihan Li |
title |
Reinforcement Strain and Potential Failure Surface of Geogrid Reinforced Soil-Retaining Wall under Horizontal Seismic Loading |
title_short |
Reinforcement Strain and Potential Failure Surface of Geogrid Reinforced Soil-Retaining Wall under Horizontal Seismic Loading |
title_full |
Reinforcement Strain and Potential Failure Surface of Geogrid Reinforced Soil-Retaining Wall under Horizontal Seismic Loading |
title_fullStr |
Reinforcement Strain and Potential Failure Surface of Geogrid Reinforced Soil-Retaining Wall under Horizontal Seismic Loading |
title_full_unstemmed |
Reinforcement Strain and Potential Failure Surface of Geogrid Reinforced Soil-Retaining Wall under Horizontal Seismic Loading |
title_sort |
reinforcement strain and potential failure surface of geogrid reinforced soil-retaining wall under horizontal seismic loading |
publisher |
Hindawi Limited |
series |
Shock and Vibration |
issn |
1875-9203 |
publishDate |
2020-01-01 |
description |
This paper presents experimental results from shaking table tests on two reduced-scale geogrid reinforced soil-retaining walls (RSRWs) constructed using standard soil, modular facing blocks, and uniaxial geogrid reinforcement to investigate the distribution of the geogrid strain and the mode of potential failure surface for dynamic loading conditions. Similitude relationships for shaking table tests in a 1 g gravitational field were used to scale the specimen geometry, applied characteristics of the earthquake motions. The lateral displacement of the top model is sufficiently large for the top-model block to fall down, and the RSRW is thus destroyed. The tensile strain at the lower part is greater than that at the upper part of the RSRW. The tensile strain in different layers for two-tiered RSRW is consistent with single-step RSRW. On comparing the measured maximum tensile strain lines of the geogrid with the result of the existing calculation method of the potential failure surface, it can be observed that the existing partial calculation method is conservative. Based on the calculation methods of various potential failure surfaces and the measured data, the use of a two-tiered fold-line failure surface is proposed for the two-tiered RSRW while taking into consideration the width of the platform. And it is advised that the failure surface calculation method of BS8006 be used as the calculation method for the potential failure surface of the single-step RSRW under dynamic motion. |
url |
http://dx.doi.org/10.1155/2020/8864256 |
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