Tunneling influence zones for adjacent existing pile foundation in soft soil developed by numerical analysis

2013 ◽  
pp. 633-640
Author(s):  
P Jongpradist ◽  
A Sawatparnich ◽  
S Youwai ◽  
J Sunitsakul ◽  
W Kongkitkul ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Pile Foundation ◽  
Soft Soil

The Numerical Analysis of CFG Pile Technology in the Disposing Soft Foundation in GuangWu Expressway

2011 ◽  
Vol 90-93 ◽  
pp. 2096-2100
Author(s):  
Yun Mei Meng ◽  
Yun Cao
Keyword(s):  
Numerical Analysis ◽  
Soft Soil ◽  
Influence Factors ◽  
Computational Results ◽  
Soft Foundation ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Cfg Pile

The problem of disposing the soft soil foundation will appear inevitably during the construction of modem high way. There are many ways to dispose the soft foundation. One of those is CFG pile technology. Take the CFG pile technology in the GuangWu Expressway for example, the influence factors of embankment settlement were discussed in detai by numerical analysis, some useful conclusions are obtained from the computational results.

The Influence of Soft Soil on the Analysis of Soil-Pile Dynamic Interaction

2011 ◽  
Vol 52-54 ◽  
pp. 1451-1457
Author(s):  
Xu Dong Cheng ◽  
Jie Li ◽  
Yong Wang
Keyword(s):  
Finite Element ◽  
Seismic Design ◽  
Pile Foundation ◽  
Large Scale ◽  
Soft Soil ◽  
Dynamic Interaction ◽  
Finite Element Software ◽  
Ground Treatment ◽  
Calculation Results ◽  
Different Thickness

In the seismic design of pile foundation, current research mainly adopts the theory of auxiliary experiences engineering design methods. In particular ground, the pile must be specially designed to meet the seismic requirements. In this paper, with large scale finite element software ADINA,a 2-d finite element entity model is established to calculate and analyze the influence of soft soil to the dynamic interaction of soft pile-soil under the earthquake. The maximum displacements and acceleration of the measuring points on the pile are analyzed in different thickness and position of the soft soil. Calculation results show that: Soft soil effect the maximal displacement and acceleration of the measuring points on the pile which changed with the different thickness and positions of the soft soil. It should be noticed in the design of pile foundation and ground treatment.

scholarly journals Effect of thermal boundary conditions on the response of thermally-activated floating piles in a cohesive material

2020 ◽  
Vol 195 ◽  
pp. 04013
Author(s):  
Peter Bourne-Webb ◽  
Martina Zito ◽  
Teresa Maria Bodas Freitas ◽  
Donatella Sterpi
Keyword(s):  
Numerical Analysis ◽  
Boundary Conditions ◽  
Pile Foundation ◽  
Initial Conditions ◽  
Small Scale ◽  
Surface Boundary ◽  
Thermally Activated ◽  
Thermal Boundary Conditions ◽  
Significant Attention ◽  
Cohesive Material

The application of thermally-activated foundations has received significant attention in the last decade with a number of large- and small-scale tests having been undertaken. Alongside these physical studies, a number of investigations utilising numerical analysis have been undertaken. The majority of analyses are transient with durations from a few hours up to 10 years. A broad range of thermal boundary and initial conditions have been applied in these analyses, and only a limited number of studies have explicitly considered the surface boundary imposed by an overlying structure, let alone considered what effect variations in the operational temperatures of the structure might have on the foundations. The work presented in this paper had the objective of systematically examining these assumptions and the effect they have on the predicted response of a thermally-activated pile foundation, and if important, which is the most appropriate set of conditions to use.

scholarly journals Numerical Assessment of Squeezed Branch Pile in Silty Clay Soil

2020 ◽  
Vol 9 (4) ◽  
pp. 2210-2216
Keyword(s):  
Pile Foundation ◽  
Load Capacity ◽  
Soft Soil ◽  
Pile Foundations ◽  
Silty Clay ◽  
Transmission Tower ◽  
Finite Element Software ◽  
Concrete Pile ◽  
Design Depth ◽  
Complicated Geometry

Squeezed Branch Pile is derived on the basis of caste in place concrete pile. It has one or more branches along the pile shaft at design depth. Squeezed branch piles are often used in high rise building, transmission tower and in other pile foundations where anticipated uplift or vertical load may cause failure. This pile is one of the excellent options of pile foundation for soft soil and silty soil. The behaviour of Squeezed Branch pile is difficult to explain using simple pile-soil theories or two dimensional numerical analyses because of complicated geometry of pile.In the present numerical analysis, a 3D pile-soil model of conventional circular pile and squeezed branch pile foundations are analysed using MIDAS GTS NX finite element software to find out effectiveness of squeezed branch pile over conventional pile. The aim is to study the performance of Squeezed Branch Pile foundation in silty clay with respect to various parameters such as types of loading, branch diameter, branch spacing and number of branches. Analysis shows that the squeezed branch pile has higher vertical, lateral and uplift load capacity as compared to conventional pile.

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