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Geosynthetic Reinforced Soil Performance Testing—Axial Load Deformation Relationships
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TLDR
The geosynthetic reinforced soil (GRS) performance test (PT), also called a mini-pier experiment, consists of constructing alternating layers of compacted granular fill and GRS reinforcement with a facing element that is frictionally connected, then axially loading the GRS mass while measuring deformation to monitor performance as discussed by the authors.Abstract:
The geosynthetic reinforced soil (GRS) performance test (PT), also called a mini-pier experiment, consists of constructing alternating layers of compacted granular fill and geosynthetic reinforcement with a facing element that is frictionally connected, then axially loading the GRS mass while measuring deformation to monitor performance. This large element load test provides material strength properties of a particular GRS composite built with unique combinations of reinforcement, compacted fill, and facing elements. This report describes the procedure and provides axial load- deformation results for a series of PTs conducted in both Defiance County, OH, as part of the Federal Highway Administration’s (FHWA) Every Day Counts (EDC) GRS Validation Sessions and in McLean, VA, at the FHWA’s Turner-Fairbank Highway Research Center as part of a parametric study. The primary objectives of this research report are to: (1) build a database of GRS material properties that can be used by designers for GRS abutments and integrated bridge systems; (2) evaluate the relationship between reinforcement strength and spacing; (3) quantify the contribution of the frictionally connected facing elements at the service limit and strength limit states; (4) assess the new internal stability design method proposed by Adams et al. 2011 for GRS; and (5) perform a reliability analysis of the proposed soil-geosynthetic capacity equation for LRFD calibration.read more
Citations
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Journal ArticleDOI
Experimental study on performance of geosynthetic-reinforced soil model walls on rigid foundations subjected to static footing loading
Chengzhi Xiao,Jie Han,Zhen Zhang +2 more
TL;DR: In this article, a series of model tests on the GRS walls were conducted to evaluate the effects of several influence factors, including the offset distance of a strip footing, the width of the strip footing and the length of geogrid reinforcement, on the ultimate bearing capacities of the Strip footings on GRS abutment walls.
Journal ArticleDOI
Deformations of geosynthetic reinforced soil under bridge service loads
TL;DR: In this article, the results of 13 large scale Geosynthetic Reinforced Soil (GRS) column load tests, also known as performance tests (PT) or mini-pier tests, to study the effect of tensile strength (T f ), vertical reinforcement spacing (S v ), facing elements, and backfill properties on the deformations of GRS at 200kPa, typical bridge bearing pressures, and also at 400kPa.
Journal ArticleDOI
Reinforcement Load and Compression of Reinforced Soil Mass under Surcharge Loading
TL;DR: In this article, an analytical method was proposed to analyze the reinforcement load and compression of reinforced soil mass subjected to surcharge loading, which explicitly considered soil nonlinearity, soil dilatancy, soil-reinforcement interaction, and end restrictions.
Journal ArticleDOI
Seismic performance of a whole Geosynthetic Reinforced Soil – Integrated Bridge System (GRS-IBS) in shaking table test
TL;DR: In this paper, a scaled plane-strain shaking table test was conducted to investigate the seismic performance of a Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) with a full-length bridge beam resting on two GRS abutments at opposite ends subjected to earthquake motions in the longitudinal direction.
Journal ArticleDOI
Numerical simulation of the deformation response of geosynthetic reinforced soil mini-piers
TL;DR: In this article, a numerical investigation of the deformation response of geosynthetic reinforced soil (GRS) mini-piers under service load conditions was presented. And the backfill soil was characterized using a...
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