Torsional vibration of an end bearing pile embedded in radially inhomogeneous saturated soil

2019 ◽  
Vol 108 ◽  
pp. 117-130 ◽  
Author(s):  
Zhenya Li ◽  
Yufeng Gao ◽  
Kuihua Wang
Keyword(s):  
Torsional Vibration ◽  
Saturated Soil ◽  
Radially Inhomogeneous ◽  
End Bearing Pile

scholarly journals Exact Solution for the Torsional Vibration of an Elastic Pile in a Radially Inhomogeneous Saturated Soil

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Xibin Li ◽  
Zhiqing Zhang ◽  
Jianchao Sheng
Keyword(s):  
Exact Solution ◽  
Torsional Vibration ◽  
Saturated Soil ◽  
Exponential Form ◽  
Soil System ◽  
Time Harmonic ◽  
Radial Inhomogeneity ◽  
Inner Region ◽  
Radially Inhomogeneous ◽  
Mathematical Derivation

An exact solution is proposed to study the time-harmonic torsional vibration of an elastic pile embedded in a radially inhomogeneous saturated soil. The radially inhomogeneous saturated soil is composed of inner disturbed and outer semi-infinite undisturbed concentric annular regions, with the shear modulus of the inner region changing in an exponential form along the radial direction. The governing equation of each region of the saturated soil is solved through rigorous mathematical derivation and the soil torsional impedance is derived with an exact and explicit expression. Making use of the boundary and continuity conditions of the pile-soil system, the torsional complex stiffness at the pile top is obtained in an exact closed form in the frequency domain. Selected numerical results are presented to investigate the influence of the radial inhomogeneity of the surrounding soil on the vibration characteristics of the pile-soil system.

Torsional Vibration of a Pile Embedded in Saturated Soil Considering Pile Construction Effect

2014 ◽  
Vol 904 ◽  
pp. 377-382
Author(s):  
Zhi Qing Zhang ◽  
Rui Fu Qin
Keyword(s):  
Governing Equation ◽  
Torsional Vibration ◽  
Soil Layer ◽  
Complex Impedance ◽  
Saturated Soil ◽  
Shear Rigidity ◽  
Disturbed Zone ◽  
Radial Inhomogeneity ◽  
Radially Inhomogeneous ◽  
Surrounding Soil

The torsional vibration of an elastic supporting pile embedded in a radially inhomogeneous saturated soil due to construction disturbance is investigated. At first, the composite soil layer is divided into outer semi-infinite undisturbed and inner annular disturbed zones, and the inner disturbed zone is subdivided into N thin concentric annular sub-layers. Then, the complex impedance at the top end of the pile is derived by substituting the available analytical expression for the shear rigidity of the composite soil layer into the governing equation of the pile. Finally, selected numerical results are obtained to analyze the influence of the radial inhomogeneity of the surrounding soil on the torsional vibration characteristics of the pile.

Vertical dynamic response of an end-bearing pile considering the nonlocal effect of saturated soil

2020 ◽  
Vol 121 ◽  
pp. 103461 ◽  
Author(s):  
Ning Wang ◽  
Yi Le ◽  
Lihong Tong ◽  
Tao Fang ◽  
Bitang Zhu ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Saturated Soil ◽  
Nonlocal Effect ◽  
End Bearing Pile
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