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Assessment of Soil Pile Separation Length of Full-Scale Pile Under Rotary Machine Induced Vibrations
https://orcid.org/http://orcid.org/0009-0002-4355-7848
https://orcid.org/http://orcid.org/0000-0001-6393-9849
While designing the pile foundation for rotary machines it is indispensable to predict the accurate frequency versus amplitude response of piles under specified dynamic loads. When the pile is subjected to vibration, the top soil in contact with the pile becomes loose and it subsequently separated from the soil. Eventually the stiffness of soil will change with time which complicates the pre diction of frequency versus amplitude response as the stiffness of system is changing. Finite element method is one of the efficient techniques which considers the nonlinear behaviour of soil. In this particular study the single pile (length = 5.8 m slenderness ratio = 35) under rotary induced vertical vibration has been investigated by means of a finite element software package ABAQUS/CAE. A soil pile model with 15 KN static load has been prepared and the dynamic analysis is performed under various eccentric moments (W.e = 0.735, 1.448, 2.117, 2.721 Nm) with frequency range of 5–45 Hz. Time versus amplitude response curves acquired at different frequencies of machine at different eccentric moments. From the time versus amplitude response, frequency versus amplitude response obtained for different eccentric moments. These frequency versus amplitude responses obtained from FEM analysis are compared with the available literature. It is observed that the resonant frequencies diminished with the increase of eccentric moment and resonant amplitudes disproportionally bumped up with the increase in eccentric intensities which shows the nonlinear behaviour of soil. Later the dynamic analysis is performed to assess the soil-pile separation length under different eccentric moments. The results concluded that the soil separation length increases with the increment of eccentric moment.
Assessment of Soil Pile Separation Length of Full-Scale Pile Under Rotary Machine Induced Vibrations
https://orcid.org/http://orcid.org/0009-0002-4355-7848
https://orcid.org/http://orcid.org/0000-0001-6393-9849
While designing the pile foundation for rotary machines it is indispensable to predict the accurate frequency versus amplitude response of piles under specified dynamic loads. When the pile is subjected to vibration, the top soil in contact with the pile becomes loose and it subsequently separated from the soil. Eventually the stiffness of soil will change with time which complicates the pre diction of frequency versus amplitude response as the stiffness of system is changing. Finite element method is one of the efficient techniques which considers the nonlinear behaviour of soil. In this particular study the single pile (length = 5.8 m slenderness ratio = 35) under rotary induced vertical vibration has been investigated by means of a finite element software package ABAQUS/CAE. A soil pile model with 15 KN static load has been prepared and the dynamic analysis is performed under various eccentric moments (W.e = 0.735, 1.448, 2.117, 2.721 Nm) with frequency range of 5–45 Hz. Time versus amplitude response curves acquired at different frequencies of machine at different eccentric moments. From the time versus amplitude response, frequency versus amplitude response obtained for different eccentric moments. These frequency versus amplitude responses obtained from FEM analysis are compared with the available literature. It is observed that the resonant frequencies diminished with the increase of eccentric moment and resonant amplitudes disproportionally bumped up with the increase in eccentric intensities which shows the nonlinear behaviour of soil. Later the dynamic analysis is performed to assess the soil-pile separation length under different eccentric moments. The results concluded that the soil separation length increases with the increment of eccentric moment.
Assessment of Soil Pile Separation Length of Full-Scale Pile Under Rotary Machine Induced Vibrations
https://orcid.org/http://orcid.org/0009-0002-4355-7848
https://orcid.org/http://orcid.org/0000-0001-6393-9849
While designing the pile foundation for rotary machines it is indispensable to predict the accurate frequency versus amplitude response of piles under specified dynamic loads. When the pile is subjected to vibration, the top soil in contact with the pile becomes loose and it subsequently separated from the soil. Eventually the stiffness of soil will change with time which complicates the pre diction of frequency versus amplitude response as the stiffness of system is changing. Finite element method is one of the efficient techniques which considers the nonlinear behaviour of soil. In this particular study the single pile (length = 5.8 m slenderness ratio = 35) under rotary induced vertical vibration has been investigated by means of a finite element software package ABAQUS/CAE. A soil pile model with 15 KN static load has been prepared and the dynamic analysis is performed under various eccentric moments (W.e = 0.735, 1.448, 2.117, 2.721 Nm) with frequency range of 5–45 Hz. Time versus amplitude response curves acquired at different frequencies of machine at different eccentric moments. From the time versus amplitude response, frequency versus amplitude response obtained for different eccentric moments. These frequency versus amplitude responses obtained from FEM analysis are compared with the available literature. It is observed that the resonant frequencies diminished with the increase of eccentric moment and resonant amplitudes disproportionally bumped up with the increase in eccentric intensities which shows the nonlinear behaviour of soil. Later the dynamic analysis is performed to assess the soil-pile separation length under different eccentric moments. The results concluded that the soil separation length increases with the increment of eccentric moment.
Assessment of Soil Pile Separation Length of Full-Scale Pile Under Rotary Machine Induced Vibrations
Spri. Proceed. in Materials
Singh, Shamsher Bahadur (editor) / Gopalarathnam, Muthukumar (editor) / Roy, Nishant (editor) / Satheesh, T. (author) / Biswas, Sanjit (author)
International Conference on Advances in Concrete, Structural, & Geotechnical Engineering ; 2024 ; Pilani, India
2025-03-23
8 pages
Article/Chapter (Book)
Electronic Resource
English
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