Interaction of Rigid Pile-Supported Embankment on Soft Soil

2006 ◽  
Author(s):  
R. P. Chen ◽  
Y. M. Chen ◽  
Z. Z. Xu
Keyword(s):  
Soft Soil ◽  
Rigid Pile ◽  
Pile Supported Embankment

Field Study of Improvement Mechanism of Geogrid-Reinforced and Pile-Supported Embankment

2014 ◽  
Vol 587-589 ◽  
pp. 928-933 ◽  
Author(s):  
Feng Lian ◽  
Zhi Liu ◽  
Jie Xu ◽  
Qiang Wang ◽  
Xian Hu Hu ◽  
...  
Keyword(s):  
Load Transfer ◽  
Soft Soil ◽  
Composite Foundation ◽  
Replacement Ratio ◽  
Floating Pile ◽  
Pile Cap ◽  
Soil Arch ◽  
Better Than ◽  
End Bearing Pile ◽  
Pile Supported Embankment

Two experimental areas in a highway soft soil ground treatment project in Guangdong Province were designed to investigate the improvement mechanism of geogrid-reinforced and pile-supported embankment(GRPS).The experimental results showed: In End-bearing Pile Area,the differential settlement between pile and soil was bigger than that of Floating Pile Area,so the bearing capacity of soil was exerted to a certain extent in Floating Pile Area. The bearing efficacy of soil below the pile cap was little, so the replacement ratio of composite foundation could be calculated according to the pile cap dimension. The load transfer efficacy of the geogrid was better than that of the soil arch. Five kinds of methods were used to evaluate the soil arch in the fill and it was indicated that the results calculated by the BS8006 method and Carlsson method was close to the experimental data which was smaller than results calculated by Hewlett method and Terzaghi method, bigger than Guido method. Through the analysis of the pile-soil stress ratio, the improvement mechanism of the two types of GRPS were revealed.

Plasticity solution for the limit vertical pressure of a single rigid pile with a pile cap in soft soil

2020 ◽  
Vol 117 ◽  
pp. 103260
Author(s):  
Hang Zhou ◽  
Hanlong Liu ◽  
Xueyuan Li ◽  
Xuanming Ding
Keyword(s):  
Soft Soil ◽  
Vertical Pressure ◽  
Rigid Pile ◽  
Pile Cap

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

Three-dimensional finite element modelling of a full-scale geosynthetic-reinforced, pile-supported embankment

2015 ◽  
Vol 52 (12) ◽  
pp. 2041-2054 ◽  
Author(s):  
R. Kerry Rowe ◽  
K.-W. Liu
Keyword(s):  
Finite Element ◽  
Soft Soil ◽  
Three Dimensional ◽  
Single Layer ◽  
Full Scale ◽  
Numerical Results ◽  
Element Analysis ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Pile Supported Embankment

The performance of four sections of a full-scale embankment constructed on soft soil is examined using a fully coupled and fully three-dimensional finite element analysis. The four sections had similar embankment loadings but different improvement options (one unimproved, one with pile-support only, one with a single layer geotextile-reinforced platform and pile-support, and one with two layers of geogrid-reinforced platform and pile-support). Like the field data, the numerical results show that the inclusion of piles decreases the settlement at the subsoil surface to 52% of that for the unimproved section, and the addition of a single layer of geotextile reinforcement (J = 800 kN/m) further reduced settlement to only 31% of that of the unimproved section. The effects of geosynthetic reinforcement and multiple layers of reinforcement on the performance of the pile-supported embankment are discussed. The relative load transfer is calculated using eight existing methods and they are compared with the field measurements and numerical results.

Construction Technology of Rigid-Flexible Composite Piles for Reinforced Thick Overburden and Deep-Buried Soft Soil

2015 ◽  
Vol 744-746 ◽  
pp. 459-463
Author(s):  
Xin Quan Wang ◽  
Yun Liang Cui ◽  
Jian Feng Liang ◽  
Shi Min Zhang ◽  
Yi Qun Tan ◽  
...  
Keyword(s):  
Bulk Material ◽  
Soft Soil ◽  
Soil Layer ◽  
Construction Technology ◽  
Reinforcing Effect ◽  
Soil Mixing ◽  
Rigid Pile ◽  
Body Strength ◽  
Thick Overburden ◽  
Poor Soil

By adopting the conventional pile foundation to treat the area of thick overburden on soft soil, the reinforcing effect can’t meet the use requirement: by adopting the bulk material pile, the lower pile body strength can’t be ensured, and by adopting the cemented soil mixing pile for reinforcing, the pile is difficult to form and the reinforcing depth can’t meet the requirement. This paper aims to overcome the defects of the conventional construction method by adopting different materials to treat, namely, the concrete rigid pile is adopted for reinforcing the soft soil layer with poor soil body quality and the cement mortar flexible pile is adopted for reinforcing the overburden with excellent soil body quality, therefore not only the reinforcing effect is ensured, but also the construction cost is saved.

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.

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