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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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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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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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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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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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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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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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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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Calculation of Cohesive Stress Along the Fictitious Crack Zone in Concrete Materials

Xu Shilang,Wang Limin

Strategic Study of CAE 2002, Volume 4, Issue 5,   Pages 53-58

Abstract:

Nonlinear fracture behaviors of concrete materials are mainly caused by the cohesive stress along the fracture process zone. Based upon concrete fracture properties and the analytical model of crack with cohesive forces, two simple formulae concisely expressing the cohesive stress distribution are presented through analyzing characteristics of the cohesive force distribution function. One formula has only one undefined parameter. The other one has two undefined parameters. According to the superposition principle of deformation body, a formula for calculating the sole undefined parameter to control the cohesive force distribution function is deduced. Similarly, two algebra equations for solving the two undefined parameters also for controlling the cohesive force distribution are given. As a result, using the test data of crack opening displacement, the cohesive stress distribution is determined. The relevant calculation examples and discussions are given, too, in this paper.

Keywords： concrete     crack opening displacement     fictitious crack cohesive force     algebra equations    

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Study on load bearing characteristic of cast in situ DX group pile with numerical analysis

Zhang Qinglin,Chen Lihong

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 51-59

Abstract:

This paper analyzes 4 types of group-pile which contains 4 piles withThe main conclusions are: group pile effect of DX pile increases sharply when pile spacing decreases；the bearing capacity of 3D spacing group-pile is 1.32 times larger than that of 1.5D spacing group-pilethe maximum value of settlement of soil among group-pile occurs between two bearing plates, and it decreaseswhen the spacing of pile increases.

Keywords： DX pile     group-pile     settlement     numerical analysis    

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Influence of axial load on the lateral pile groups response in cohesionless and cohesive soil

Jasim M. ABBASA,Zamri CHIK,Mohd Raihan TAHA

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 176-193 doi: 10.1007/s11709-015-0289-7

Abstract: The response in this assessment considered lateral pile displacement and lateral soil resistance andThe improved plots can be used for lateral loaded pile design and to produce the group action designThe effect of load combination on the lateral pile group response was performed on three pile group configurations(i.e., 2×1, 2×2 and 3×2) with four pile spacings (i.e., = 2 , 4 , 6 and 8 ).group relative to that for the single pile in case of pure lateral load.

Keywords： piles     pile group     spacing     configuration     combined load    

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Case study of DX single pile settlement

Tang Songtao,Yuan Xiyu,Chen Lihong

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 41-45

Abstract:

DX pile which is typical varied cross-section pile has a different loadtransfer mechanism compared to straight pile.The bearing capacity of the pile is increased, while the settlement is significantly reduced at the sameThis paper compares the settlement characteristics of DX pile and straight pile on the basis of lotsof projects to verify the DX pile settlement formula and the reliability of correction factor.

Keywords： DX pile     straight pile     settlement     correction coefficient    

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Application of fuzzy analytic hierarchy process model on determination of optimized pile-type

Lei MA, Shuilong SHEN, Jinhui ZHANG, Yang HUANG, Feng SHI

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 252-257 doi: 10.1007/s11709-010-0017-2

Abstract: Pile-type selection is a very important stage of foundation design, and there are many field factorsinfluencing the decision of pile-type selection.In this study, AHP combined with fuzzy synthetic evaluation method is employed to select the type of pileThe results show that fuzzy AHP approach is an easy and efficient way for pile-type selection.

Keywords： pile type     fuzzy synthetic evaluation     analytic hierarchy process (AHP)     optimal selection    

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Comparison of shallow tunneling method with pile and rib method for construction of subway station in

Sina AMIRI; Ali Naghi DEHGHAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 704-717 doi: 10.1007/s11709-021-0746-4

Abstract: the present study, a comparison between the new shallow tunneling method (STM) and the traditional pile

Keywords： shallow tunneling method     pile and rib method     ground surface settlement     subway station construction    

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Title Author Date Type Operation

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

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

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

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

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

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

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

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

Journal Article

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

Yuan GUO,Xiong (Bill) YU

Journal Article

Calculation of Cohesive Stress Along the Fictitious Crack Zone in Concrete Materials

Xu Shilang,Wang Limin

Journal Article

Study on load bearing characteristic of cast in situ DX group pile with numerical analysis

Zhang Qinglin,Chen Lihong

Journal Article

Influence of axial load on the lateral pile groups response in cohesionless and cohesive soil

Jasim M. ABBASA,Zamri CHIK,Mohd Raihan TAHA

Journal Article

Case study of DX single pile settlement

Tang Songtao,Yuan Xiyu,Chen Lihong

Journal Article

Application of fuzzy analytic hierarchy process model on determination of optimized pile-type

Lei MA, Shuilong SHEN, Jinhui ZHANG, Yang HUANG, Feng SHI

Journal Article

Comparison of shallow tunneling method with pile and rib method for construction of subway station in

Sina AMIRI; Ali Naghi DEHGHAN

Journal Article