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A simplified method for the determination of vertically loaded pile-soil interface parameters in layeredsoil based on FLAC

Jiu-jiang WU,Yan LI,Qian-gong CHENG,Hua WEN,Xin LIANG

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 103-111 doi: 10.1007/s11709-015-0328-4

Abstract: The numerical analysis of pile-soil interaction commonly requires a lot of trial works to determine thesensitivity analysis to figure out the influence of interface parameters on the bearing behavior of a single pileThen, a simplified method for the determination of pile-soil interface parameters in layered soil is

Keywords： determination of interface parameters     pile-soil interaction     FLAC3D     sensitivity analysis     layeredsoil    

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Finite element prediction on the response of non-uniformly arranged pile groups considering progressivefailure of pile-soil system

Qian-Qing ZHANG, Shan-Wei LIU, Ruo-Feng FENG, Jian-Gu QIAN, Chun-Yu CUI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 961-982 doi: 10.1007/s11709-020-0632-5

Abstract: A uniform arrangement of individual piles is commonly adopted in the conventional pile group foundationLarge differential settlement of pile groups will decrease the use-safety requirements of building, evenThis paper presents a finite element analysis on the response of pile groups with different layouts ofindividual piles in pile groups.Furthermore, the response of non-uniformly arranged pile groups, e.g., individual piles with variable

Keywords： numerical simulation     non-uniformly arranged pile groups     differential settlement     pile-soil interaction    

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Shaking table testing of hard layered soil-pile-structure interaction system

LI Peizhen, REN Hongmei, LU Xilin, SONG Heping, CHEN Yueqing

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 346-352 doi: 10.1007/s11709-007-0046-7

Abstract: Shaking table tests on a dynamic interaction system of hard layered soil, pile foundation and frame structureBased on these tests, several key issues about the seismic response of the dynamic soil-structure interactionMagnification or reduction of vibration transferred by soil was related to soil characteristic, excitationGenerally, sand magnifies vibration, while viscous powder soil dampens vibration.

Keywords： super-structure     Generally     Magnification     frequency     different    

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Optimum lateral extent of soil domain for dynamic SSI analysis of RC framed buildings on pile foundations

Nishant SHARMA, Kaustubh DASGUPTA, Arindam DEY

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 62-81 doi: 10.1007/s11709-019-0570-2

Abstract: This article describes a novel approach for deciding optimal horizontal extent of soil domain to be usedfor finite element based numerical dynamic soil structure interaction (SSI) studies.SSI model for a 12 storied building frame, supported on pile foundation-soil system, is developed inLateral extent of soil domain, along with the soil properties, were varied exhaustively for a particulardomain is prescribed for various structural widths, soil types and peak ground acceleration levels of

Keywords： soil structure interaction     optimum lateral extent of soil domain length     multi-storyed framed building     pile foundation     OpenSEES     L-K boundaries     dynamic analysis    

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A simplified method for investigating the bending behavior of piles supporting embankments on soft ground

Frontiers of Structural and Civil Engineering   Pages 1021-1032 doi: 10.1007/s11709-023-0952-3

Abstract: Here, we propose an efficient two-stage method that combines a test-verified soil deformation mechanismand Poulos’ solution for pile–soil interaction to investigate the bending behavior of piles supportingbetween the soft and firm ground layers, at mid-depths of the fan zone, and at the boundary of the soilThe location of the bending failure depends on the position and relative stiffness of the given pile.When the embedded length of a pile exceeded a critical value, the bending moment at the interface between

Keywords： bending behavior     pile     embankment     soil−structure interaction     failure mode    

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Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Frontiers of Structural and Civil Engineering   Pages 915-934 doi: 10.1007/s11709-023-0907-8

Abstract: A fictitious soil pile (FSP) model is developed to simulate the behavior of pipe piles with soil plugsThe developed model simulates the base soil with a fictitious hollow pile fully filled with a soil plugextending at a cone angle from the pile toe to the bedrock., and the propagation of stress waves in the base soil and soil plug is considered.The motions of the pile−soil system are solved by discretizing them into spring-mass model based on the

Keywords： fictitious soil pile     soil plug     pipe piles     high-strain dynamic analysis     one-dimensional wave theory     pile dynamics    

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Soil-water interaction in unsaturated expansive soil slopes

ZHAN Liangtong

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 198-204 doi: 10.1007/s11709-007-0023-1

Abstract: The intensive soil-water interaction in unsaturated expansive soil is one of the major reasons for slopeIn this paper, the soil-water interaction is investigated with the full-scale field inspection of rainwaterIt is demonstrated that the soil-water interaction induced by seasonal wetting-drying cycles is veryIn addition, the abundant cracks in the expansive soil play an important role in the soil-water interactionThe seasonal wetting-drying cycles tend to result in a down-slope creeping of the shallow soil layer,

Keywords： strength     intensive soil-water     comprehensive     Infiltration     wetting-induced softening    

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Machine learning-based seismic assessment of framed structures with soil-structure interaction

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 205-223 doi: 10.1007/s11709-022-0909-y

Abstract: technique (MLT) to predict the seismic performance of low- to mid-rise frame structures considering soil-structureinteraction (SSI).

Keywords： seismic hazard     artificial neural network     soil-structure interaction     seismic analysis    

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Diaphragm wall-soil-cap interaction in rectangular-closed- diaphragm-wall bridge foundations

Hua WEN, Qiangong CHENG, Fanchao MENG, Xiaodong CHEN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 93-100 doi: 10.1007/s11709-009-0015-4

Abstract: Diaphragm wall-soil-cap interaction was studied using a model test.It was observed that the distribution of soil resistance under the cap is not homogeneous.The soil resistance in the corner under the cap is larger than that in the border; and that in the centerThe distribution of soil resistance under the cap will be more uniform, if the sectional area of soilThe load shearing percentage of soil resistance under the cap is 10%-20%.

Keywords： diaphragm wall     bridge foundation     low cap     interaction    

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Demonstration of the Principle of Interaction between Plastic Volume Strain and Shear for Rock and Soil

Wang Jingtao

Strategic Study of CAE 2006, Volume 8, Issue 9,   Pages 24-29

Abstract:

The paper proposed a principle of interaction between plastic volume strains of and shear for rockand soil.Especially, the manners of the interaction between plastic volume strain and shear strain, the directexpansion of volume, the fact that the dependence of stress path is a comprehensive performance form of the interaction

Keywords： principle of interaction between plastic volume strain and shear strain for rock and soil     constitutiverelation of rock and soil     pressure-sensitivity     dilatancy    

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Numerical evaluation of group-pile foundation subjected to cyclic horizontal load

Youngji JIN, Xiaohua BAO, Yoshimitsu KONDO, Feng ZHANG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 196-207 doi: 10.1007/s11709-010-0021-6

Abstract: In this paper, three-dimensional (3D) finite element analyses of a real-scale group-pile foundation subjectedIn order to consider the influence of an effective stress path on the prediction of the group-pile foundation, the analyses are conducted within the framework of the soil-water coupling method with finite-differenceis quite confident to say that the method can be used to predict the mechanical behaviors of group-pile

Keywords： group-pile foundation     real-scale cyclic loading test     three-dimensional finite element method (3D-FEM)     soil-water coupling analysis     undisturbed and remolded specimens    

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Model test study on surrounding soil stress distribution of DX pile

Tang Songtao,Chen Lihong,Yuan Xiyu

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 105-112

Abstract: of DX piles, so that the load transfer law in the soil can be researched.the straight pile with the same parameters.However, when the bell locates on the lower part of pile shaft, the stress of soil around the pile tipFor two-bell DX pile, the stresses around the two bells are similar, and the range of soil stress inducedFor the DX pile with three bells, the soil stress around the bells spread increasingly, while the amplitude

Keywords： DX pile     earth pressure cell     stress measurement    

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Nonlinear elastic model for compacted clay concrete interface

R. R. SHAKIR, Jungao ZHU

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 187-194 doi: 10.1007/s11709-009-0033-2

Abstract: The clay soil used in the test was collected from the “Shuang Jang Kou” earth rockfill dam project.

Keywords： interface modeling     friction     soil structure interface     soil structure interaction     simple shear test    

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Design and analyses of open-ended pipe piles in cohesionless soils

Yuan GUO,Xiong (Bill) YU

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 22-29 doi: 10.1007/s11709-016-0314-5

Abstract: Large open-ended pipe pile has been found to be advantageous for use in transportation projects.A major factor for all the design codes is to properly account for the formation and effects of soilTo close the knowledge gap, discrete element method (DEM) was used to simulate the soil plugging processBesides, nearly 90% of the plug resistance is provided by the bottom half portion of the soil column.The soil-pile friction coefficient has a significant effect on the magnitude of plug resistance, with

Keywords： open-ended pipe pile     soil plug     DEM     base capacity    

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Discontinuous mechanical behaviors of existing shield tunnel with stiffness reduction at longitudinal joints

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 37-52 doi: 10.1007/s11709-022-0920-3

Abstract: An analytical model is proposed to estimate the discontinuous mechanical behavior of an existing shield tunnel above a new tunnel. The existing shield tunnel is regarded as a Timoshenko beam with longitudinal joints. The opening and relative dislocation of the longitudinal joints can be calculated using Dirac delta functions. Compared with other approaches, our method yields results that are consistent with centrifugation test data. The effects of the stiffness reduction at the longitudinal joints (α and β), the shearing stiffness of the Timoshenko beam GA, and different additional pressure profiles on the responses of the shield tunnel are investigated. The results indicate that our proposed method is suitable for simulating the discontinuous mechanical behaviors of existing shield tunnels with longitudinal joints. The deformation and internal forces decrease as α, β, and GA increase. The bending moment and shear force are discontinuous despite slight discontinuities in the deflection, opening, and dislocation. The deflection curve is consistent with the additional pressure profile. Extensive opening, dislocation, and internal forces are induced at the location of mutation pressures. In addition, the joints allow rigid structures to behave flexibly in general, as well as allow flexible structures to exhibit locally rigid characteristics. Owing to the discontinuous characteristics, the internal forces and their abrupt changes at vulnerable sections must be monitored to ensure the structural safety of existing shield tunnels.

Keywords： tunnel–soil interaction     discontinuous analysis     longitudinal joints     existing shield tunnel     Timoshenko    

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Title Author Date Type Operation

A simplified method for the determination of vertically loaded pile-soil interface parameters in layeredsoil based on FLAC

Jiu-jiang WU,Yan LI,Qian-gong CHENG,Hua WEN,Xin LIANG

Journal Article

Finite element prediction on the response of non-uniformly arranged pile groups considering progressivefailure of pile-soil system

Qian-Qing ZHANG, Shan-Wei LIU, Ruo-Feng FENG, Jian-Gu QIAN, Chun-Yu CUI

Journal Article

Shaking table testing of hard layered soil-pile-structure interaction system

LI Peizhen, REN Hongmei, LU Xilin, SONG Heping, CHEN Yueqing

Journal Article

Optimum lateral extent of soil domain for dynamic SSI analysis of RC framed buildings on pile foundations

Nishant SHARMA, Kaustubh DASGUPTA, Arindam DEY

Journal Article

A simplified method for investigating the bending behavior of piles supporting embankments on soft ground

Journal Article

Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Journal Article

Soil-water interaction in unsaturated expansive soil slopes

ZHAN Liangtong

Journal Article

Machine learning-based seismic assessment of framed structures with soil-structure interaction

Journal Article

Diaphragm wall-soil-cap interaction in rectangular-closed- diaphragm-wall bridge foundations

Hua WEN, Qiangong CHENG, Fanchao MENG, Xiaodong CHEN

Journal Article

Demonstration of the Principle of Interaction between Plastic Volume Strain and Shear for Rock and Soil

Wang Jingtao

Journal Article

Numerical evaluation of group-pile foundation subjected to cyclic horizontal load

Youngji JIN, Xiaohua BAO, Yoshimitsu KONDO, Feng ZHANG,

Journal Article

Model test study on surrounding soil stress distribution of DX pile

Tang Songtao,Chen Lihong,Yuan Xiyu

Journal Article

Nonlinear elastic model for compacted clay concrete interface

R. R. SHAKIR, Jungao ZHU

Journal Article

Design and analyses of open-ended pipe piles in cohesionless soils

Yuan GUO,Xiong (Bill) YU

Journal Article

Discontinuous mechanical behaviors of existing shield tunnel with stiffness reduction at longitudinal joints

Journal Article