Experimental Study of the Load Response of Large Diameter Closed-Ended and Open-Ended Pipe Piles Installed in Alluvial Soil

Han, Fei; Ganju, Eshan; Salgado, Rodrigo; Prezzi, Mônica; Zaheer, Mir

doi:10.5703/1288284316880

Cited by 7 publications

(3 citation statements)

References 39 publications

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“…Pier 7 (an interior pier) of the bridge was selected for the live load test because a static load test on instrumented test piles ( 7 – 11 ) had been performed in 2016 close to this pier, providing valuable reference for the understanding of the foundation response to the live load in the present study. In addition, most of the in situ tests (standard penetration tests and cone penetration tests) had been performed close to Pier 7, and the test results can be found in ( 8 , 9 , 11 – 13 ). The test site consists mainly of poorly-graded sand and gravel mixtures.…”

Section: Instrumentationmentioning

confidence: 99%

Monitoring of the Response of the Sagamore Parkway Bridge and its Foundations During a Live Load Test

Han

Marashi

Prezzi

et al. 2020

Transportation Research Record: Journal of the Transportation R

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In this paper, we report the results of a live load test performed on the Sagamore Parkway bridge over the Wabash River, Indiana. The seven-span concrete bridge was constructed from 2016 to 2018 to replace the old, east-bound bridge. The main goals of the live load test were: (i) to study the transfer of the live loads from the bridge pier to the foundation elements and the distribution of live loads among the individual piles supporting the bridge pier; and (ii) to verify the assumptions (e.g., regarding the pile cap resistance) made in bridge foundation design. For these purposes, one of the interior piers (Pier 7) of the bridge and the fifteen pipe piles supporting it were instrumented with vibrating-wire strain gauges. With the bridge temporarily closed to traffic, the live load test was performed by parking twelve loaded triaxle trucks at specific locations on the bridge deck near Pier 7 in March 2019. The truck loads were applied in seven stages, simulating the driving of several trucks over the bridge pier. The settlement of the pier was measured using a digital level during the live load test. The data from the strain gauge readings were processed to produce the history of load distribution within the cross section of the pier and among the piles in the pile group during the seven stages of the live load test. The soil in contact with the pile cap carried about half of the total live load.

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Section: Instrumentationmentioning

confidence: 99%

Monitoring of the Response of the Sagamore Parkway Bridge and its Foundations During a Live Load Test

Han

Marashi

Prezzi

et al. 2020

Transportation Research Record: Journal of the Transportation R

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“…Manandhar et al [33] concluded that, a small increase in tapering degree of the pile affects signi cantly on a higher skin friction comparing with conventional straight piles at different sand relative densities. Other investigations studied the factors that directly affect the pile load capacity as pile geometry [16,21,22,26,49], pile material [10], pile installation technique methods [1,2,15] and soil conditions [14,45]. Due to install piles into a thick strata and di cult driving conditions, steel conical driving shoes are the preferred end closure for open-ended pipe piles.…”

Section: Introductionmentioning

confidence: 99%

Geotechnical behavior of a single pile in sand with varied cross-section geometries and construction techniques

Sakr

Azzam

Kassim

2023

Innov. Infrastruct. Solut.

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In this experimental work, the in uence of pile cross-section with varied con gurations on the axial compression load capacity of a single pile and related settlement in sand are investigated. The in uence of relative sand density (D r ), the pile length to diameter (L/D) ratios and the pile installation techniques are presented. A testing program comprising seven model steel piles with varied shapes of 20 mm width/diameter was conducted. The tests are performed on model piles with the pile length to diameter ratios of 10 and 30 installed in the three cases of sand modeling as loose, medium dense and dense sand. Results indicated that, the rectangular pile is the optimization cross-sectional under the same pile geometry and soil conditions. Also, the increase of the relative sand density has a signi cant in uence on the ultimate compression pile load. Furthermore, the ultimate axial loads of exible piles in the case of loose sand using the nondisplacement method were found to be increased by 119%, 114%, 143%, 82% 139%, 89% and 100% comparing with the ultimate axial loads of rigid piles for the seven models of closed-ended pipe, open-ended pipe, conical base pipe, square closed-ended, square openended, tapered and rectangular piles respectively. While, these percentages were found to be increased by (49%, 37%, 26%, 78%, 35%, 71% and 91%) and (77%, 50%, 13%, 116%, 61%, 89% and 85%) in the cases of medium dense and dense sand respectively. The results also indicated that, piles installed in sand using jacking technique have more resistance compared with piles installed in sand using nondisplacement technique.

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Section: Introductionmentioning

confidence: 99%

Model Study of a Single Pile With Varied Configuration in Sand

Sakr

Azzam

Kassim

2021

Preprint

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In this experimental work, the influence of pile cross-section with varied configurations on the axial compression load capacity of a single pile and related settlement in sand are investigated. The influence of relative sand density (Dr), the pile length to diameter (L/D) ratios and the pile installation techniques are presented. A testing program comprising seven model steel piles with varied shapes of 20 mm width/diameter was conducted. The tests are performed on model piles with the pile length to diameter ratios of 10 and 30 installed in the three cases of sand modeling as loose, medium dense and dense sand. Results indicated that, the rectangular pile is the optimization cross-sectional under the same pile geometry and soil conditions. Also, the increase of the relative sand density has a significant influence on the ultimate compression pile load. Furthermore, the ultimate axial loads of flexible piles in the case of loose sand using the non-displacement method were found to be increased by 119%, 114%, 143%, 82% 139%, 89% and 100% comparing with the ultimate axial loads of rigid piles for the seven models of closed-ended pipe, open-ended pipe, conical base pipe, square closed-ended, square open-ended, tapered and rectangular piles respectively. While, these percentages were found to be increased by (49%, 37%, 26%, 78%, 35%, 71% and 91%) and (77%, 50%, 13%, 116%, 61%, 89% and 85%) in the cases of medium dense and dense sand respectively. The results also indicated that, piles installed in sand using jacking technique have more resistance compared with piles installed in sand using non-displacement technique.

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Experimental Study of the Load Response of Large Diameter Closed-Ended and Open-Ended Pipe Piles Installed in Alluvial Soil

Cited by 7 publications

References 39 publications

Monitoring of the Response of the Sagamore Parkway Bridge and its Foundations During a Live Load Test

Monitoring of the Response of the Sagamore Parkway Bridge and its Foundations During a Live Load Test

Geotechnical behavior of a single pile in sand with varied cross-section geometries and construction techniques

Model Study of a Single Pile With Varied Configuration in Sand

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