Model tests on piled raft subjected to lateral soil movement

Al-abboodi, Ihsan; Sabbagh, Tahsin Toma

doi:10.1080/19386362.2017.1296061

Cited by 8 publications

(4 citation statements)

References 14 publications

(13 reference statements)

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“…During operation of the building to be restored, reconstructed or repaired, it is possible to change the hydrogeological situation within the core area of the soil bed. For example, extra moistening leads to deterioration of the physical and mechanical properties of soils; the strength of the bed decreases and its deformability increases (Shamsi et al 2019 [10], Lee et al 2018 [11], Ihsan and Toma Sabbagh 2017 [12], Rabiei and Choobbasti 2015 [13], Pronozin et al 2018, 2019 [14,1]).…”

Section: Changed Properties Of Foundation Soilsmentioning

confidence: 99%

Laboratory Investigation on Interaction of the Pile Foundation Strengthening System with the Rebuilt Solid Pile-Slab Foundation

et al. 2020

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The article presents the results of laboratory studies of pile model foundations in order to determine the effectiveness of the method proposed by the authors for its reconstruction in pile-tile foundation with preliminary pressing and cementation of the soil base. The studies were carried out on small-scale wooden models of foundations in the conditions of a soil paste. The models of foundations were subjected to vertical static loading in a laboratory tray with a diametrical transparent wall. The program of experiments was provided for determination of precipitation of the models: pile foundations without strengthening, with strengthening in the form of reconstruction from the combined foundation and with strengthening in the form of reconstruction into the combined foundation with preliminary stress of the soil base in the span part. Vertical and horizontal movements in the soil mass were also recorded by a contactless method (PIV) in every stage of model loading. On the basis of experimental measurements digital processing of data of sediments and displacements is performed, for drawing plots of sediments, epures and isolines of displacements in the soil base. The main result of the research is confirmation of the high efficiency of the proposed method of strengthening pile foundations due to the maximum use of pre-pressed soil base resources in spans between pile rows. It has been found that compression (pre-stress) significantly reduces soil deformability and allows to include it in operation without additional deformations. The use of pre-compaction reduced the precipitation of the model combined foundation by almost 40%, relative to the combined without compaction. The results of the research open the possibility to develop new methods of strengthening pile foundations from the point of view of effective inclusion in the operation of the soil base in the span part, due to its preliminary tension.

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Section: Changed Properties Of Foundation Soilsmentioning

confidence: 99%

Laboratory Investigation on Interaction of the Pile Foundation Strengthening System with the Rebuilt Solid Pile-Slab Foundation

et al. 2020

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“…The inner faces of the test box were marked at 50 mm intervals to assist accurate formation of sand stacking inside the test box during the tests. The dimensions of the test box have been chosen according to previous researches taking into consideration the boundary conditions influence of the test box (Khari et al, 2013;Al-abboodi and Sabbagh, 2017).…”

Section: Testing Boxmentioning

confidence: 99%

“…These studies were conducted to investigate the response of single vertical piles and pile groups under lateral soil movement (e.g. Poulos et al, 1995;Pan et al, 2002;White et al, 2008;Guo and Ghee, 2010;Al-abboodi and Sabbagh, 2017). (Cubrinovski and Ishihara, 2007) Similarly, studies on 'active' batter piles subjected to combined lateral and vertical loads have significantly attracted research efforts for the last four decades (Meyerhof and Ranjan, 1972;Meyerhof and Yalcin, 1993;Zhang et al, 1999;Zhang et al, 2002;Wang et al, 2014;Singh and Arora, 2017).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of batter pile groups behaviour subjected to lateral soil movement in sand

Sabbagh

Al-Salih

Al-abboodi

2019

International Journal of Geotechnical Engineering

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A series of laboratory model tests on batter pile groups embedded in sand was carried out in a specially designed testing box. The lateral responses were investigated for 1 × 2 capped batter pile groups when subjected to lateral soil movements (passive loading) with different configurations; Vertical-Vertical (VVL), Batter-Vertical (BVL), Vertical-Batter (VBL) andBoth-Batter (BBL). The effect of pile group arrangement and batter angle on the bending moment, shear force, soil reaction, pile rotation and deflection behaviour of the passive batter pile groups were studied. It is observed that the behaviour of the individual piles in a group was significantly affected by the batter angle and the pile group arrangement. It is also shown that under passive loading, batter pile groups with (BBL) configuration of (-10 o , +10 o ) offered more resistance to the lateral soil movement compared to other pile group arrangements, while (VVL) configuration offered the least resistance.

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“…In this case, the piles receive the upper load indirectly and mostly considered as stiffeners of the marginal ground or settlement reducers [11]. Many researches are now being done to understand the complex soil-structure interaction (SSI) phenomena in disconnected piled rafts [12] [13] [14] [15].…”

Section: Introductionmentioning

confidence: 99%

Deep Foundation Pit Excavations Adjacent to Disconnected Piled Rafts: A Review on Risk Control Practice

Uge¹,

Guo²

2020

OJCE

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Foundation pit excavation engineering is an old subject full of decision making. Yet, it still deserves further research due to the associated high failure cost and the complexity of the geological conditions and/or the surrounding existing infrastructure around it. This article overviews the risk control practice of foundation pit excavation projects in close proximity to existing disconnected piled raft. More focus is given to geotechnical aspects. The review begins with achievements to ensure excavation performance requirements, and follows to discuss the complex soil structure interaction involved among the fundamental components: the retaining wall, mat, piles, cushion, and the soil. After bringing consensus points to practicing engineers and decision makers, it then suggests possible future research directions.

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Model tests on piled raft subjected to lateral soil movement

Cited by 8 publications

References 14 publications

Laboratory Investigation on Interaction of the Pile Foundation Strengthening System with the Rebuilt Solid Pile-Slab Foundation

Laboratory Investigation on Interaction of the Pile Foundation Strengthening System with the Rebuilt Solid Pile-Slab Foundation

Experimental investigation of batter pile groups behaviour subjected to lateral soil movement in sand

Deep Foundation Pit Excavations Adjacent to Disconnected Piled Rafts: A Review on Risk Control Practice

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