Effect of saturation on response of a single pile embedded in saturated sandy soil to vertical vibration

Fattah, Mohammed Y.; Zabar, Bushra S.; Mustafa, Faris S.

doi:10.1080/19648189.2017.1391126

Cited by 19 publications

(9 citation statements)

References 17 publications

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“…1. Based on the results of many previous studies and design experience [26][27][28][29][30][31], a laminar shear box was used in this test to effectively reduce the influence of the boundary effect. Its length, width, and depth were 0.95 m, 0.85 m, and 0.75 m, respectively.…”

Section: Introductionmentioning

confidence: 99%

Performance of a Subgrade-Embankment-Seawall System Reinforced by Drainage PCC Piles and Ordinary Piles Subjected to Lateral Spreading

Chen

Wang

et al. 2023

Geofluids

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Coral sand is widely distributed in coastal areas and used as a soil foundation in an increasing number of projects. Historical records show that the liquefaction and lateral spreading of coral sand foundations occurred many times during earthquakes, resulting in serious geological and engineering disasters. Based on a rigid drainage pile, a PCC pile (Large Diameter Pipe Pile by using Cast-in-place Concrete) and drainage body are innovatively combined into a new drainage PCC pile, to reduce the harm caused by liquefaction and lateral spreading of the coral sand foundation. In this study, the seismic response of the subgrade-embankment-seawall system on the coral sand liquefaction site was simulated using a shaking table. The excess pore water pressure ratio, acceleration, average foundation settlement, seawall displacement, embankment deformation, and pile body bending moment of the ordinary pile foundation and new drainage PCC pile foundation under seismic loads of PGA peak ground acceleration = 0.05 g , PGA = 0.1 g , and PGA = 0.2 g on the coral sand site were analyzed and compared. Compared with ordinary pile foundations, the excess pore water pressure ratio, pile bending moment, seawall displacement, foundation settlement, and embankment deformation of the new drainage PCC pile foundation were markedly reduced, while acceleration increased, which showed that the new drainage PCC pile had a positive anti-liquefaction effect on the coral sand foundation.

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Section: Introductionmentioning

confidence: 99%

Performance of a Subgrade-Embankment-Seawall System Reinforced by Drainage PCC Piles and Ordinary Piles Subjected to Lateral Spreading

Chen

Wang

et al. 2023

Geofluids

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“…When the pile is driven at this frequency, the soil resistance to the pile can be reduced to the greatest extent and the pile sinking speed is the fastest, but they did not find the solution [6]. Nogami et al Studied the impact of vibration pile driving construction on surrounding buildings [7]. Holeyman believes that the most important problem in the analysis of vibration pile sinking is the problem of pilesoil interaction during pile sinking [8].…”

Section: Introductionmentioning

confidence: 99%

Vibration pile driving system based on Sliding Mode Control

Zhang

Jia

2022

J. Phys.: Conf. Ser.

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The sliding mode variable structure synchronous control of vibration pile driving system driven by double DC motors is studied. Firstly, the model of double machine driven vibratory pile driving system is established, and the theoretical derivation of system synchronization and stability is carried out. Secondly, the sliding mode variable structure control method is used to realize the phase speed synchronous control of two motors in the vibration system. Finally, Simulink is used to verify the correctness of the theoretical derivation, and the vibration displacement of the pile driving system is simulated and analyzed. The research shows that the sliding mode variable structure control can realize the synchronous control of the double machine driven vibratory pile driving system, which provides a theoretical and practical engineering basis for the design of this type of vibratory pile driving system.

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“…Most of the research performed by domestic and foreign scholars is done with three methods: field in situ tests, indoor physical model tests, and numerical simulations [1][2][3][4]. Some scholars have compared and verified the three methods.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Analysis of the Thermal-Mechanical Response of an Energy Pile

Zhang

Liu

et al. 2022

Lithosphere

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An energy pile undertakes the functions of supporting the superstructure and controlling the indoor temperature of the building, and the thermal-mechanical coupling response of an energy pile makes its load transfer mechanism different from that of conventional engineering piles. Moreover, the thermal-mechanical coupling responses of the energy piles in summer and winter conditions are also different and need to be explored separately. Based on a ground source heat pump pile foundation workshop project in Kunshan city, Jiangsu Province, a multiphysics simulation study was carried out. The simulation results of the outlet water temperature and pile settlement are consistent with the real-world measurements, which verifies the reliability of the numerical simulation. The responses of the temperature distribution, axial stress, lateral shear stress, and settlement of the energy pile in summer and winter were analyzed, and the response laws of the energy pile in different seasons were obtained. Compared with the pure conventional load state, under the effect of thermal-mechanical coupling in winter conditions, the maximum compressive stress of the pile body is reduced by about 11.5%, but the settlement of the pile top increases by about 47.66%. Therefore, the winter conditions should be used as the design energy for the normal use of the pile. The control condition of the limit state: compared with the pure conventional load state, the maximum compressive stress of the pile increases by about 12% and the settlement of the pile top decreases by about 7.23% under the thermal-mechanical coupling effect of the summer condition. Therefore, the summer condition is the pile control conditions for the limit state of the body’s carrying capacity.

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Effect of saturation on response of a single pile embedded in saturated sandy soil to vertical vibration

Cited by 19 publications

References 17 publications

Performance of a Subgrade-Embankment-Seawall System Reinforced by Drainage PCC Piles and Ordinary Piles Subjected to Lateral Spreading

Performance of a Subgrade-Embankment-Seawall System Reinforced by Drainage PCC Piles and Ordinary Piles Subjected to Lateral Spreading

Vibration pile driving system based on Sliding Mode Control

Simulation and Analysis of the Thermal-Mechanical Response of an Energy Pile

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