Calculation of Pile-soil Stress Ratio of Rigid Pile Composite Foundation with Consideration of Upward Penetration of Piles

2011 ◽  
Vol 5 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Minghua Zhao ◽  
Qing Chen ◽  
Ling Zhang
Keyword(s):  
Stress Ratio ◽  
Composite Foundation ◽  
Rigid Pile ◽  
Soil Stress ◽  
Rigid Pile Composite Foundation

Analysis on Pile-Soil Stress Ratio of Composite Foundation with Sparse Capped-Piles under Lime-Soil Embankment Load

2014 ◽  
Vol 501-504 ◽  
pp. 124-131 ◽  
Author(s):  
Wei Zheng Liu ◽  
Jun Hui Zhang ◽  
Hao Zhang
Keyword(s):  
Stress Ratio ◽  
Load Transfer ◽  
Stress Transfer ◽  
Composite Foundation ◽  
Transfer Model ◽  
Soil Pressure ◽  
Soil Stress ◽  
Rigid Pile Composite Foundation ◽  
Embankment Height ◽  
Piled Embankment

The combined effect of the embankment fill, piles and caps, and foundation soils on the load transfer characteristics of sparse capped-piled embankment is very significant. Using the modified cylindrical shear stress transfer model based on Marston soil pressure theory, a new calculation method for pile-soil stress ratio of sparse rigid pile composite foundation incorporating the arching effect in lime-soil and soil-pile interaction was presented. The presented method is verified by comparison between analytical solutions and the observed results from a practical project. In addition, a parametric study was also conducted to evaluate the influence of the embankment height, the cohesion of fill and pile-soil stiffness ratio on the pile-soil stress ratio.

A New Type of Pile – Long with Cushion-Short without Cushion Rigid Pile

2012 ◽  
Vol 166-169 ◽  
pp. 803-808
Author(s):  
Ming Fei Zhang ◽  
Guang Hua Yang ◽  
En Qi Wang
Keyword(s):  
Stress Level ◽  
Stress Ratio ◽  
Soft Soil ◽  
Vertical Direction ◽  
Composite Foundation ◽  
Finite Element Software ◽  
Rigid Pile ◽  
Soil Stress ◽  
New Type ◽  
The One

At present, in the deep soft soil area, pile types of composite foundation include rigid-flexible and long-short piles, rigid long- short pile , pile partner, and this paper proposes a new type of pile - rigid long-short piles with no cushion short pile. Using the one Finite element software Midas- GTS , this paper compared these pile types ,in vertical direction element stress, pile-soil stress ratio and cushion stress level the cushion of pile-soil stress ratio and stress level, to illustrate the advantages of the new pile.

Character Analysis of Balance and Imbalance of Varying Rigidity of Rigid Pile Composite Foundation under Seismic Load

2014 ◽  
Vol 1065-1069 ◽  
pp. 19-22
Author(s):  
Zhen Feng Wang ◽  
Ke Sheng Ma
Keyword(s):  
Finite Element ◽  
Bending Moment ◽  
Horizontal Displacement ◽  
Element Model ◽  
Composite Foundation ◽  
Seismic Load ◽  
Seismic Loads ◽  
Element Analysis ◽  
Rigid Pile ◽  
Rigid Pile Composite Foundation

Based on ABAQUS finite element analysis software simulation, the finite element model for dynamic analysis of rigid pile composite foundation and superstructure interaction system is established, which selects the two kinds of models, by simulating the soil dynamic constitutive model, selecting appropriate artificial boundary.The influence of rigid pile composite foundation on balance and imbalance of varying rigidity is analyzed under seismic loads. The result shows that the maximum bending moment and the horizontal displacement of the long pile is much greater than that of the short pile under seismic loads, the long pile of bending moment is larger in the position of stiffness change. By constrast, under the same economic condition, the aseismic performance of of rigid pile composite foundation on balance of varying rigidity is better than that of rigid pile composite foundation on imbalance of varying rigidity.

Analysis for Seismic Response of Compacted Soil-Cement Pile Composite Foundations

2011 ◽  
Vol 368-373 ◽  
pp. 456-460
Author(s):  
Hong Huan Cui ◽  
Li Qun Zhang ◽  
Hai Long Wang
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Seismic Behavior ◽  
Composite Foundation ◽  
Response Analysis ◽  
Compacted Soil ◽  
Rigid Pile ◽  
Soil Cement ◽  
Earthquake Load ◽  
Rigid Pile Composite Foundation

Compacted soil-cement pile possess the excellences both flexible pile and rigid pile. The composite foundation of compacted soil-cement pile are getting more and more applicable to construction． However, the research on their response under dynamic load, especially under earthquake load，is quite limited．Now the seismic response analysis in time domain is performed with finite element method(ABAQUS).Some parameters influencing the anti-seismic behavior of half-rigid pile composite foundation are studied． Based on these research , some conclusions which may be of some value for anti-seismic design of this type of composite foundations are drawn．

Study and Analysis on Pile-Soil Stress Ratio of the Composite Foundation of Cement-Soil Mixing Pile under Flexible Foundation

2011 ◽  
Vol 335-336 ◽  
pp. 1145-1150
Author(s):  
Xiao Rong Yang ◽  
Lei Yu Zhang ◽  
Hai Chao Li ◽  
Li Ying Dong
Keyword(s):  
Stress Ratio ◽  
Soft Soil ◽  
Composite Foundation ◽  
Soil Mixing ◽  
Soil Stress ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Flexible Foundation ◽  
Cement Soil ◽  
Friction Pile

In order to analyze the characteristics of pile-soil stress ratio of the composite foundation of cement-soil mixing pile under flexible foundation, this paper points out the displacement mode of friction pile; According to the deformation characteristic of friction pile, ascertain the neutral point of composite foundation. And this paper also derives the exact formula about length-stress ratio which addresses the problem of soft soil foundation according to the deformation co-ordination conditions of the pile composite foundation. The calculation of actual example proves that the formula about pile-soil stress ratio is in accordance with actual measurement number. The pile-soil stress ratio which addresses the problem of soft soil foundation is generally between 2~4. If other conditions keep invariable, pile-soil stress ratio become big when cushion modulus become big. Cushion modulus effect the length-stress ratio greatly.

Centrifuge study on behavior of rigid pile composite foundation under embankment in soft soil

2020 ◽  
Author(s):  
Jian-lin Yu ◽  
Jia-jin Zhou ◽  
Xiao-nan Gong ◽  
Ri-qing Xu ◽  
Jun-yuan Li ◽  
...  
Keyword(s):  
Soft Soil ◽  
Composite Foundation ◽  
Rigid Pile ◽  
Rigid Pile Composite Foundation

Mathematical Simulation of Rigid Pile Composite Foundation with Lateral Unloading

2013 ◽  
Vol 368-370 ◽  
pp. 756-759
Author(s):  
Jing Ma ◽  
Wen Sheng Chen ◽  
Xue Feng Hu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Mathematical Simulation ◽  
Horizontal Displacement ◽  
Composite Foundation ◽  
The Finite Element Method ◽  
Rigid Pile ◽  
Rigid Pile Composite Foundation ◽  
The Impact ◽  
Element Method

Based on the Finite Element Method ,a model has been built to study the impact of rigid pile composite foundation with lateral unloading,then obtained a conclusion about the horizontal displacement during excavating.

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