Article
Construction & Building Technology
Wenjie Ma, Yao Shan, Binglong Wang, Shunhua Zhou, Changdan Wang
Summary: This study proposes an analytical solution for the torsional vibration response of an end-bearing pile in nonhomogeneous unsaturated soil. It considers the nonlinear variation of shear modulus of the soil with depth and the inertial coupling effect between pore water and gas components.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Chunyi Cui, Zhimeng Liang, Chengshun Xu, Yu Xin, Benlong Wang
Summary: An analytical model for the horizontal vibration of a single pile embedded in radially heterogeneous saturated soil is established using Biot's dynamic equations and Novak's thin-layer theory. The frequency-domain response of the surrounding soil and the analytical solution for the horizontal impedance of pile head are derived. The accuracy of the obtained solution is validated through independent comparisons, and the effect of soil radial heterogeneity on the horizontal vibration of an end bearing pile is discussed through extensive parametric analysis.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Engineering, Geological
Mi Zhao, Yiming Huang, Piguang Wang, Xinglei Cheng, Xiuli Du
Summary: An analytical solution for the vertical vibration of a floating pile considering different types of soil foundation under dynamic loads is developed in this study. The pile is modeled as an Euler-Bernoulli beam, and the soil is modeled as a three-dimensional axisymmetric viscoelastic medium. The governing equation for the soil is decoupled using a potential function and the separation variables method, and the expressions for soil displacement and soil impedance function are obtained. The expressions for pile displacement are derived based on the displacement equilibrium and stress equality between the pile and soil. Additionally, a frequency-domain solution for the coupling interaction of a viscoelastic half-space is derived. The reasonableness of the analytical solution is validated by comparing it with software ABAQUS and existing analytical solutions under the condition of a rigid foundation and only vertical dynamic load. Finally, the differences and similarities in the dynamic response of different soil foundation types to the pile and soil are revealed, providing theoretical support for numerical analysis.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Changjie Zheng, George Kouretzis, Xuanming Ding, Lubao Luan
Summary: This paper presents an analytical solution to describe the dynamic interaction between a single end bearing pile and its surrounding poroelastic soil. The solution considers both the two-phase soil and the pile as three-dimensional continua, allowing for the analysis of wave propagation and its effects on pile response.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Engineering, Geological
Mi Zhao, Yiming Huang, Piguang Wang, Yanhui Cao, Xiuli Du
Summary: A three-dimensional water-pile-soil model is developed to study the dynamic responses of end-bearing pile under vertical P-waves. The study reveals the importance of considering water-pile-soil interactions in the design of piles installed in offshore areas.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Ocean
Weiyun Chen, Tianyu Zhang, Lingyu Xu, Chao Liu, Guoxing Chen, Ning Wang
Summary: In this study, the vertical vibration characteristics of an offshore end-bearing pile embedded in saturated soils are investigated using a semi-analytical method. The dynamic governing equations of the ideal compressible fluid and the saturated soil are decoupled by introducing potential functions and Helmholtz decomposition. Analytical and semi-analytical solutions for the offshore end-bearing pile vertical vibration are obtained in the frequency and time domains respectively. A parametric study is conducted to investigate the influences of various factors on the vertical dynamic responses of offshore pile.
APPLIED OCEAN RESEARCH
(2023)
Article
Computer Science, Interdisciplinary Applications
Lihua Wang, Lu Dai, Chunlin Liu, Feng Yu
Summary: This paper presents an analytical method to investigate the vertical vibration of a pipe pile in layered poroelastic soils due to a harmonic load. The vertical vibration performance is obtained by considering the vibration theory of the pipe pile and the compatible conditions. Parametric studies reveal the influences of pipe pile wall thickness, soil permeability, and pile-soil stiffness ratio on the vibration characteristics of the pipe pile.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Engineering, Civil
Freddie Theland, Geert Lombaert, Stijn Francois, Costin Pacoste, Fanny Deckner, Peter Blom, Jean-Marc Battini
Summary: This paper presents novel measurement data on the dynamic soil-structure interaction of an end-bearing pile foundation. The results show that the individual pile impedances are overestimated compared to the measurements, while the interaction factors show a better agreement. Additionally, the experimental results validate the pile-soil-pile interaction results from previous numerical studies.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Yiming Huang, Mi Zhao, Piguang Wang, Haibin Xu, Xiuli Du
Summary: An analytical solution has been developed to investigate the dynamic responses of floating piles in different types of soil viscoelastic half-spaces. The solution considers the 1D vibration theory for the pile, potential function decomposition and variable separation method for the soil, and displacement compatibility and traction equilibrium for the pile-soil interaction. The solution is compared with other methods and provides valuable guidance for engineering structures.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Engineering, Geological
Changjie Zheng, Ming Chen, George Kouretzis
Summary: This paper presents a mathematical model for analyzing axially-loaded end-bearing piles in a two-layer elastic soil deposit. The model provides frictional stresses at the soil-pile interface and improves computational efficiency. The study reveals that the relative stiffness of the soil layers has a significant impact on the performance of the piles.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2023)
Article
Computer Science, Interdisciplinary Applications
Chunyi Cui, Kun Meng, Chengshun Xu, Zhimeng Liang, Haijiang Li, Huafu Pei
Summary: A new analytical approach is proposed for the vertical vibration of a floating pile in saturated viscoelastic soil based on Biot's theory, with the accuracy of the approach verified by comparisons with previous solutions. The study also examines the effects of various factors on the dynamic behavior of the floating pile, providing a wider application for pile foundation engineering.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Engineering, Marine
Yiming Huang, Mi Zhao, Piguang Wang, Xinglei Cheng, Xiuli Du
Summary: The water-pile-soil model on viscoelastic half-space is developed to study the dynamic responses of an end-bearing pile under horizontal dynamic loads. The displacement response of the pile is obtained by solving the pile-soil and pile-water systems separately. The present solution is compared with numerical method and can be applied to evaluate the relationships between water and pile-soil parameters in the design of offshore cast-in-place piles, with a focus on the influence of the soil viscoelastic half-space shear modulus.
Article
Engineering, Marine
Yiming Huang, Mi Zhao, Piguang Wang, Xinglei Cheng, Xiuli Du
Summary: The study developed a water-pile-soil model to investigate the dynamic responses of an endbearing pile subjected to horizontal dynamic loads in a viscoelastic half-space. The results suggest that it is necessary to consider the influence of the viscoelastic half-space on the pile end soil when designing offshore cast-in-place piles.
Article
Computer Science, Interdisciplinary Applications
Rui Dong, Zhendong Shan, Liping Jing, Zhinan Xie, Zhiyong Yin, Tong Zheng
Summary: Taking into account the interaction between the pile and soil, this study presents a displacement model for the steady-state kinematic response of a single pile to vertically incident P-waves based on a continuum model. A rigorous solution for the vertical kinematic response of an end-bearing pile is provided. The study shows that the presented model has a more concise and definite physical meaning and has excellent application prospects in pile seismic design.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Engineering, Geological
Wenjie Ma, Yao Shan, Ke Xiang, Binglong Wang, Shunhua Zhou
Summary: This paper analyzes the dynamic impedance of end-bearing pile groups embedded in homogeneous unsaturated soil subjected to vertical harmonious load. By decoupling the control equations and deriving various parameters, the vertical dynamic impedance of pile groups is obtained, and the proposed analytical solution is verified.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2022)
Article
Engineering, Geological
Changjie Zheng, Hanlong Liu, Xuanming Ding
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2016)
Article
Engineering, Geological
Hanlong Liu, Changjie Zheng, Xuanming Ding, George P. Kouretzis, Scott W. Sloan
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2016)
Article
Engineering, Mechanical
Xuanming Ding, Changjie Zheng, Hanlong Liu, George Kouretzis
JOURNAL OF ENGINEERING MECHANICS
(2017)
Article
Acoustics
Yiwei Lu, Hanlong Liu, Changjie Zheng, Xuanming Ding
SHOCK AND VIBRATION
(2017)
Article
Engineering, Mechanical
Xuanming Ding, Changjie Zheng, Hanlong Liu, George Kouretzis
JOURNAL OF ENGINEERING MECHANICS
(2017)
Article
Engineering, Geological
Lubao Luan, Changjie Zheng, George Kouretzis, Guangwei Cao, Hang Zhou
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2019)
Article
Engineering, Geological
Lubao Luan, Changjie Zheng, George Kouretzis
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2019)
Article
Engineering, Geological
Changjie Zheng, Shishun Gan, George Kouretzis, Lubao Luan, Xuanming Ding
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2020)
Article
Engineering, Geological
Changjie Zheng, Lubao Luan, George Kouretzis, Xuanming Ding
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2020)
Article
Engineering, Geological
Changjie Zheng, Yuanjie Cai, Lubao Luan, George Kouretzis, Xuanming Ding
Summary: This paper introduced an analytical method using Jacobi orthogonal polynomials to determine the response of a rigid strip foundation on a viscoelastic half-space to horizontal dynamic loads. Displacements and stresses of the soil-footing system were obtained through inverse Fourier transform. The effects of material damping and Poisson's ratio of soil on the dynamic response of the strip footing were investigated using the proposed solution.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2021)
Article
Engineering, Geological
Changjie Zheng, Tong Luo, George Kouretzis, Xuanming Ding, Lubao Luan
Summary: This paper presents a method for the seismic analysis of open-ended pipe piles, considering the kinematic interaction between the pile and its surrounding soil. It investigates the sensitivity of pipe piles' seismic response to different parameters and finds that bending stiffness governs their seismic behavior. The presented solution offers a low-cost alternative for preliminary seismic design.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2022)
Article
Engineering, Geological
Changjie Zheng, George Kouretzis, Xuanming Ding, Lubao Luan
Summary: This paper presents a mathematical model for the elastic analysis of single floating piles subjected to axial dynamic loads. The model treats the soil surrounding the pile as a viscoelastic continuum and uses one-dimensional rod theory to model the pile and the soil column underlying the pile tip. The model provides closed-form expressions for the dynamic stiffness at the pile head and the frictional resistance along the pile shaft. The paper concludes with a discussion on the main mechanisms governing the inertial response of floating piles and investigates the sensitivity of the dynamic stiffness and frictional resistance to geometric and material parameters.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2022)
Article
Engineering, Geological
Changjie Zheng, Tong Luo, Lubao Luan
Summary: This paper presents an analytical study on the lateral kinematic response of offshore pipe piles subjected to vertically propagating S-wave seismic excitation. Both the kinematic interaction of the pipe pile with the soil and seawater are considered. The study investigates the sensitivity of the seismic response of pipe piles to key problem parameters and finds that partially embedded piles are more flexible and the presence of seawater amplifies the seismic responses of offshore pipe piles.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2023)
Article
Engineering, Geological
Changjie Zheng, Xuanming Ding
Summary: This paper presents a closed-form formulation for the dynamic analysis of lateral response of floating piles in a saturated finite-thickness soil layer. The governing equations of the saturated soil are established based on Biot's poroelastic theory, and the solution provides the lateral resistance of the surrounding saturated soil to pile deflection. Instead of solving complex integral equations in existing boundary integral methods, closed-form expressions of the lateral deformations of pile along depth and the dynamic compliances at the pile head are obtained by solving a system of linear equations derived from the boundary and continuity conditions. The parametric study explores the sensitivity of pile compliances and deformations to key problem parameters, including the pile-soil modulus ratio and soil permeability.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2023)
