A study on lateral transient vibration of large diameter piles considering pile-soil interaction

Chang, Xin; Liu, Dong Jia; Gao, Fang; Lu, Zhi Tang; Long, Li Li; Zhang, Jian; Geng, Xiao Jie

doi:10.1016/j.soildyn.2016.08.029

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…The former, including the infinite element method (IEM) [68], BEM, etc., offers high levels of precision but is computationally intensive. The other consists of a viscous boundary [69], paraxial boundary [70], Higdon boundary [71], transmission boundary [72][73][74], viscous-spring artificial boundary [75], and so on. Among these viscoelastic boundaries, which exhibit excellent precision and stability in handling both static and dynamic problems [76], have been shown to consider both the large-scale basin effect and local nonlinear effect [77].…”

Section: Finite Element Methods (Fem)mentioning

confidence: 99%

Seismic Assessment of Large-Span Spatial Structures Considering Soil–Structure Interaction (SSI): A State-of-the-Art Review

Zhan,

Xue,

et al. 2024

Buildings

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Soil–structure interaction (SSI), which characterizes the dynamic interaction between a structure and its surrounding soil, is of great significance to the seismic assessment of structures. Past research endeavors have undertaken analytical, numerical, and experimental studies to gain a thorough understanding of the influences of SSI on the seismic responses of a wide array of structures, including but not limited to nuclear power plants, frame structures, bridges, and spatial structures. Thereinto, large-span spatial structures generally have much more complex configurations, and the influences of SSI may be more pronounced. To this end, this paper aims to provide a state-of-the-art review of the SSI in the seismic assessment of large-span spatial structures. It begins with the modelling of soil medium, followed by the research progress of SSI in terms of numerical simulations and experiments. Subsequently, the focus shifts towards high-lighting advancements in understanding the seismic responses of large-span spatial structures considering SSI. Finally, some discussions are made on the unresolved problems and the possible topics for future studies.

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Section: Finite Element Methods (Fem)mentioning

confidence: 99%

Seismic Assessment of Large-Span Spatial Structures Considering Soil–Structure Interaction (SSI): A State-of-the-Art Review

Zhan,

Xue,

et al. 2024

Buildings

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“…According to beam theory, when the shear modulus of Timoshenko beams is sufficiently large, the cross-section does not undergo shear deformation, and Timoshenko beams degenerate into Euler beams [28]. Reference [29] used the Euler beam and linear elastic saturated soil models to provide the displacement of the pile top in saturated soil under a triangular impact load. The soil model is degraded into elastic saturated soil by taking the viscosity order a = 0, and the Timoshenko beam is degraded into the Euler beam by taking the pile foundation shear modulus G p = 10E p .…”

Section: Algorithm Verificationmentioning

confidence: 99%

“…The soil model is degraded into elastic saturated soil by taking the viscosity order a = 0, and the Timoshenko beam is degraded into the Euler beam by taking the pile foundation shear modulus G p = 10E p . The other calculation parameters are the same as those in reference [29] (see Table 1). Meanwhile, the load P(t) is defined as a triangular impact load, and its time-domain and Laplace transform domain expressions are:…”

Section: Algorithm Verificationmentioning

confidence: 99%

Study on the Time Domain Semi Analytical Method for Horizontal Vibration of Pile in Saturated Clay

Ren,

Wang

2024

Applied Sciences

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Under the framework of Biot porous media theory, a fractional order Kelvin model is used to describe the rheological effects of soil skeletons, and a coupled vibration model of saturated clay and a pile foundation is constructed. The Laplace transform is used to derive the analytical solution of the control equation in the transformation domain, and then the time–domain solution is obtained through numerical inversion. By analyzing numerical examples, the displacement and internal force response of pile foundations under horizontal vibration loads, as well as the influence of parameters, are studied. The results show that the displacement and internal force response of pile foundation vibrations in saturated clay foundations have a delayed effect. The stronger the rheological properties of the foundation soil, the more obvious the delay, the lower the load frequency, and the more significant the influence of the rheological properties on the delayed effect. The stronger the rheological properties of the soil, the smaller the displacement amplitude of the pile foundation vibration, and the higher the load frequency, the greater the decrease in displacement amplitude. The stronger the rheological properties of the soil, the smaller the positive bending moment of the pile body, while the negative bending moment increases. Both positive and negative shear forces increase, but the shear force at the top of the pile is not affected. Therefore, when designing pile foundations in saturated clay foundations, it is necessary to appropriately increase the pile foundation or increase the reinforcement to meet the shear resistance of the pile foundation. The results of this study can provide a valuable reference for geotechnical and seismic engineers in pile foundation design.

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“…For example, Dezfulian and Seed [14] simulated the propagation of ground motion in the bedrock, and found that pile-soil interaction affects the propagation features of ground motion in soil. Chang et al [15] explored the three-dimensional (3D) dynamic features of lateral transient vibration of large-diameter piles, and summed up the stiffness and damping features of these piles. Based on simplified Winkler model, Prendergast and Gavin [16] determined the initial stiffness coefficient, and then simulated the elastic response of pile-soil system.…”

Section: Introductionmentioning

confidence: 99%

Shaking Table Tests and Numerical Analysis on the Seismic Response of Karst-Crossing Socketed Piles in Dry Sandy Soil Foundation

Wang¹,

Ding²,

Zhang³

2020

IJDNE

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The foundation piles in karst areas have different mechanical properties from those in other areas. Targeting a critical highway bridge in a karst area, this paper designs two kinds of foundation pile models: friction pile, and KCSP, based on theories on dynamic tests. Then, shaking table tests were carried out to ascertain the features of pile strain distribution of KCSP under earthquakes. During the tests, a large laminar suspended shear box was adopted to mimic the boundary effect of soil. In addition, numerical simulations were conducted to disclose the effects of karst cave on pile strain. The test results indicate that: the peak strain of KCSP increased with the peak acceleration; For both KCSP and friction pile, the peak strain decreased first and then increased along the depth; The presence of karst cave can adversely affect the seismic response of foundation pile; The taller the karst cave, the larger the peak strain of the pile; the peak strain of KCSP was larger at the two ends, and smaller in the middle. The numerical analysis shows that: the peak strain of foundation pile in karst cave increased significantly with cave height; The peak strain of the pile passing through multiple caves was similar to that of the pile passing through only one cave, under the same cave height; But the multi-cave scenario differed from the single-cave scenario in peak strain distribution. The research results provide new insights into the seismic design of pile foundation of bridges in karst areas.

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A study on lateral transient vibration of large diameter piles considering pile-soil interaction

Cited by 7 publications

References 11 publications

Seismic Assessment of Large-Span Spatial Structures Considering Soil–Structure Interaction (SSI): A State-of-the-Art Review

Seismic Assessment of Large-Span Spatial Structures Considering Soil–Structure Interaction (SSI): A State-of-the-Art Review

Study on the Time Domain Semi Analytical Method for Horizontal Vibration of Pile in Saturated Clay

Shaking Table Tests and Numerical Analysis on the Seismic Response of Karst-Crossing Socketed Piles in Dry Sandy Soil Foundation

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