Comparative study on the behaviour of granular pile anchors and helical pile anchors in expansive soils subjected to swelling
02 Jan 2020-International Journal of Geotechnical Engineering (Informa UK Limited)-Vol. 14, Iss: 1, pp 49-54
TL;DR: Several foundation techniques, such as belled piers, under-reamed piles, helical piles are adopted in expansive soils to avoid the problem posed by its swelling nature as mentioned in this paper.
Abstract: Several foundation techniques, such as belled piers, under-reamed piles, helical piles are adopted in expansive soils to avoid the problem posed by its swelling nature. In recent years, the granula...
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TL;DR: In this paper, the feasibility of reusing waste tire textile fibers (WTTFs) as reinforcement agents in an expansive soil was investigated through a comprehensive set of laboratory experiments, i.e., standard compaction, split tensile strength (STS), swelling-consolidation, volumetric shrinkage, and desiccation cracking tests.
81 citations
TL;DR: In this paper, the response of granular piles in the presence of encasement and combination of geotextile and lateral reinforcement under strain-restricted compression tests was analyzed.
Abstract: Expansive soils are prone to volumetric changes when interacted with water, which makes them unfavorable in civil engineers’ perspective. Granular piles are the effective and economic ground improvement techniques available under such criteria. As granular piles attain their support from surrounding soil, these generally fail by bulging under compression in soft clays. This limitation can be answered by provision of tubular geotextile encasement around the column. However, when the compressive loads are high, the bulging in granular pile makes the geotextile reach its tensile strength and does not provide any additional improvement. Further, this problem can be solved by providing lateral reinforcement in the column, as it tends to reduce the stress concentration at the top portion of the pile where bulging occurs, improving their performance. The present study deals with the response of granular piles in the presence of encasement and combination of encasement and lateral reinforcement under strain-restricted compression tests. In both floating and end-bearing granular piles, the load capacity of composite soil is substantially increased. The rate of increase in load-carrying capacity was higher when end-bearing granular pile was reinforced with geotextile encasement and minimal with additional lateral reinforcement. The results show that geotextile encased laterally reinforced granular piles of end-bearing type and floating type showed a substantial increase in load-carrying capacity relative to clay by 2.44 and 2.01 times, respectively.
11 citations
TL;DR: In this article, the effect of soil spatial variability on the undrained vertical uplift capacity of plate anchors was examined using the three-dimensional random finite element approach using the 3D random finite-element approach.
Abstract: The effect of soil spatial variability on the undrained vertical uplift capacity of plate anchors has been examined using the three-dimensional random finite-element approach. Multiple dire...
5 citations
TL;DR: In this paper, a limited number of studies have been conducted on helical anchors in slope stabilisation and retaining wall construction, and the performance of these anchors has not been evaluated.
Abstract: Despite numerous applications of helical anchors in slope stabilisation and retaining wall construction, a limited number of studies have been conducted on their performance. In the present study, ...
5 citations
Cites background from "Comparative study on the behaviour ..."
...Muthukumar and Shukla (2017) compared the strength behaviour of granular pile anchors (GPAs) and helical pile anchors (HPAs) against uplift in expansive soils under the swelling....
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References
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Book•
20 May 2004
TL;DR: Unsaturated Soil Mechanics as mentioned in this paper provides a comprehensive introduction to the fundamental principles of unsaturated soil mechanics and provides extensive sample problems with an accompanying solutions manual, and brings together the rapid advances in research in unsaturated soil mechanics in one focused volume.
Abstract: DESCRIPTION Unsaturated Soil Mechanics is the first book to provide a comprehensive introduction to the fundamental principles of unsaturated soil mechanics. * Offers extensive sample problems with an accompanying solutions manual. * Brings together the rapid advances in research in unsaturated soil mechanics in one focused volume. * Covers advances in effective stress and suction and hydraulic conductivity measurement.
940 citations
Book•
01 Jul 1992
TL;DR: Expansive soils: problems and practice in foundation and pavement engineering as discussed by the authors, Expansive soil problems and practices in the field of pavement engineering and foundation and foundation engineering, etc.
Abstract: Expansive soils: problems and practice in foundation and pavement engineering , Expansive soils: problems and practice in foundation and pavement engineering , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
673 citations
TL;DR: Expansive clay soils have been encountered at the sites of structures throughout the western United States as discussed by the authors, where most of these structures are hydraulic, and the normal difficulties encountered w...
Abstract: Expansive clay soils have been encountered at the sites of structures throughout the western United States. Inasmuch as most of these structures are hydraulic, the normal difficulties encountered w...
489 citations
"Comparative study on the behaviour ..." refers background in this paper
...The free swell index (FSI) later designated as differential free swell index of the soil was found to be 200%, which is considered to be highly swelling expansive soils (Holtz and Gibbs 1956)....
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185 citations
"Comparative study on the behaviour ..." refers background in this paper
...Further, some special foundation techniques such as drilled piers, belled piers and under-reamed piles have also been suggested as an alternate foundation practices in expansive soils (Chen 1988; Sharma, Jain, and Prakash 1978)....
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...Because of this dual swell-shrink behaviour of expansive soils, civil engineering structures such as residential building, pavements, canal linings and lightly loaded structures, constructed on these soils, are severely damaged, thus causing huge financial losses (Chen 1988)....
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...Expansive soils are considered highly problematic, because of its inherent tendency to undergo volumetric changes corresponding to the changes in moisture regime (Chen 1988)....
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TL;DR: A series of resonant column tests was conducted on chemically stabilized specimens of sulfate-rich expansive clay from southeast Arlington, Texas as mentioned in this paper, which were tested for different stabilizer types.
Abstract: A series of resonant column tests was conducted on chemically stabilized specimens of sulfate-rich expansive clay from southeast Arlington, Tex. Specimens were tested for different stabilizer types...
72 citations
"Comparative study on the behaviour ..." refers background in this paper
...…adopted in expansive soils are replacement of expansive soils by non-expansive soils, physical stabilisations, like sand-clay and gravel-clay mixes, chemical stabilisation using cement, lime, calcium chloride and fly ash (Puppala 2001; Hoyos, Puppala, and Chainuwat 2004; Al-Akhras et al. 2008)....
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