Numerical investigation into ground treatment to mitigate the permanent train-induced deformation of pile-raft-soft soil system

2020 ◽  
Vol 24 ◽  
pp. 100368 ◽  
Author(s):  
Linlin Gu ◽  
Zhen Wang ◽  
Qiang Huang ◽  
Guanlin Ye ◽  
Feng Zhang
Keyword(s):  
Numerical Investigation ◽  
Soft Soil ◽  
Soil System ◽  
Ground Treatment

The Experimental Research on the Bag-Grouting-Pile Composite Foundation in Coastal Soft Foundation Treatment

2013 ◽  
Vol 275-277 ◽  
pp. 1411-1414
Author(s):  
Dong Wang ◽  
Jia Cao
Keyword(s):  
Experimental Research ◽  
Soft Soil ◽  
Cost Effective ◽  
Horizontal Displacement ◽  
Composite Foundation ◽  
Soil Reinforcement ◽  
Treatment Technology ◽  
Ground Treatment ◽  
Foundation Treatment ◽  
Soft Foundation

As a new ground treatment technology, the bag-grouting-pile composite foundation is used in railway soft soil reinforcement. In this paper, the application effect of bag-grouting-pile in coastal soft foundation treatment was studied in this experimental research; the deep settlement and the deep horizontal displacement of embankment edge in bag-grouting-pile composite foundation are tested in the research. The results of research show that the bag-grouting-pile composite foundation is a cost-effective ground treatment technology using in coastal soft foundation treatment.

Test Study on Effective Reinforcement Depth of Dynamic Compaction and Filling Replacement

2011 ◽  
Vol 368-373 ◽  
pp. 2550-2553 ◽  
Author(s):  
Wei Li ◽  
Chun Xiao Zhang ◽  
Peng Xiang Sun
Keyword(s):  
Bearing Capacity ◽  
Low Cost ◽  
Soft Soil ◽  
Dynamic Compaction ◽  
Reinforcement Effect ◽  
Large Area ◽  
Remarkable Effect ◽  
Ground Treatment ◽  
Test Study ◽  
Effective Reinforcement

Filling replacement combined with dynamic compaction is a very effective method to preprocess the soft soil to obtain larger bearing capacity. That not only has remarkable effect to improve soil bearing capacity, but also has some advantages, such as quick construction, simple equipment, low cost and so on. And that is appropriate for large area ground treatment engineering. The purpose of ensuring the reinforcement effect and saving the project cost, and providing references for the similar projects can be achieved through the test study on effective reinforcement depth of dynamic compaction and filling replacement.

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.

Reinforced granular fill-soft soil system: Membrane effect

1994 ◽  
Vol 13 (11) ◽  
pp. 743-759 ◽  
Author(s):  
Chandan Ghosh ◽  
M.R. Madhav
Keyword(s):  
Soft Soil ◽  
Soil System ◽  
Membrane Effect ◽  
Granular Fill

Investigation of behavior of footings over rigid inclusion-reinforced soft soil: experimental and numerical approaches

2019 ◽  
Vol 56 (12) ◽  
pp. 1940-1952 ◽  
Author(s):  
Hung V. Pham ◽  
Laurent Briançon ◽  
Daniel Dias ◽  
Jérôme Racinais
Keyword(s):  
Rigid Inclusion ◽  
Soft Soil ◽  
Measurement Data ◽  
Complex Loading ◽  
Reinforced Soil ◽  
Soil Parameters ◽  
Soil System ◽  
Vertical Loading ◽  
Head Pressure ◽  
Numerical Approaches

The aim of this study is to investigate the behavior of a footing lying directly upon a rigid inclusion-reinforced soft soil. Both experimental and numerical approaches were conducted. The studied cases include single rigid inclusion tests, a footing over nonrigid inclusion-reinforced soil, and a footing over rigid inclusion-reinforced soil. The vertical loading tests on single rigid inclusions and the footing over unreinforced soil showed the behavior of the multi-layered soil, thus allowing for the determination of soil parameters for the numerical analyses. The tests on the footing over reinforced soil were, furthermore, carried out with different loading cases (centered and eccentric vertical loads and horizontal loads). Special attention was paid to the influence of the complex loading cases on the footing over a reinforced soil system by the measurement of the inclusion head pressure, the vertical and lateral footing settlements, and the lateral inclusion displacements. The measured pressure on the inclusion seemed to increase linearly with the vertical loading on the footing. A good agreement between the numerical analysis results and measurement data has been found for the loading phases while underprediction appears for a few loading cycles, probably due to the simplified soil constitutive model adopted.

Reinforced granular fill-soft soil system: confinement effect

1994 ◽  
Vol 13 (11) ◽  
pp. 727-741 ◽  
Author(s):  
Chandan Ghosh ◽  
M.R. Madhav
Keyword(s):  
Soft Soil ◽  
Confinement Effect ◽  
Soil System ◽  
Granular Fill
Sign in / Sign up

Export Citation Format

Share Document