Numerical simulation of the composite foundation of cement soil mixing piles using FLAC3D

2018 ◽  
Vol 22 (S4) ◽  
pp. 7965-7974
Author(s):  
Xiaohui Lu ◽  
Song Mengen ◽  
Peifang Wang
Keyword(s):  
Numerical Simulation ◽  
Composite Foundation ◽  
Soil Mixing ◽  
Cement Soil

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.

The Research on Applied of Cement-Soil Mixing Method Reinforcing Shallow Soft-Soil Foundation in Yinchuan Distric

2013 ◽  
Vol 477-478 ◽  
pp. 572-576 ◽  
Author(s):  
Cai Xia Ma
Keyword(s):  
Soft Soil ◽  
Economic Benefits ◽  
Influential Factors ◽  
Composite Foundation ◽  
Soil Mixing ◽  
Mixing Method ◽  
Points Of View ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Cement Soil

Through tests and application, analyzes influential factors & reinforcement effect and application prospects & economic benefits of cement-soil mixing composite foundation, propounds some points of view for stabilizing & reinforcement soft-soil foundation by cement-soil mixing method especially in Yinchan District combined with constructive situation

scholarly journals Experimental Study of Stabilized Soil Utilizing Circulating Fluidized Bed Combustion Desulfurization Ash with Carbide Slag and Desulfurization Gypsum

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Dezhi Shao ◽  
Jinlong Liu ◽  
Xin Huang
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Composite Foundation ◽  
Industrial Wastes ◽  
Fluidized Bed Combustion ◽  
Soil Mixing ◽  
Carbide Slag ◽  
Stabilized Soil ◽  
Cement Soil ◽  
Circulating Fluidized Bed Combustion

This paper discusses the feasibility of preparing soil stabilizer which is circulating fluidized bed combustion ash-based, supplemented with carbide slag and desulfurization gypsum, composed entirely of complete industrial wastes. The results show that CFBC ash has better pozzolanic activity than fly ash. When stabilizer total content is 10% and the ratio of CFBC ash : carbide slag : desulfurization gypsum is 7.2 : 1.8 : 1, compressive strength of stabilized soil can reach the maximum of 2.12 MPa at the age of 28 d of curing. Stabilizer can meet the strength requirements of cement-soil mixing pile composite foundation and cement-soil mixing pile waterproof curtain.

Study on the Law of Cement-Soil Mixing Pile Composite Foundation Settlement in Ancient Tower Translocation Project

2017 ◽  
Vol 730 ◽  
pp. 463-472
Author(s):  
Dong Fan Shang ◽  
Tie Cheng Wang ◽  
Wan Ming Qiang ◽  
Lei Qiang Miao
Keyword(s):  
Retention Time ◽  
Soft Soil ◽  
Composite Foundation ◽  
Design Solution ◽  
Foundation Settlement ◽  
Soil Mixing ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Cement Soil ◽  
Translocation Speed

Longxi Tower translocation project is the first case of high-rise ancient tower structure translocation on soft soil foundation in China. Foundation treatment protocol and building materials are essential to control soft soil foundation settlement. Depending on Longxi Tower translocation project, firstly this thesis analyzed and confirmed control factors that impact foundation settlement and deformation; then combing with project experience, it selected cement soil mixing pile composite foundation method to treat soft soil foundation; and finally it confirmed the optimal solution to treat cement soil mixing pile composite foundation through analyzing the settlement law of cement soil mixing pile composite foundation. The analysis indicated that cement soil mixing pile composite foundation settlement are obviously impacted by translocation speed and retention time; foundation settlement and deformation level increase as translocation speed decreases and retention time increases; in the case that foundation settlement difference is not beyond 1/1000 of half the distance of track beams at the bottom of building, a treatment solution was made by analyzing how cement soil mixing pile settlement changes as translocation speed, retention time and other factors. The result showed that this treatment solution saved 42% of project cost more than the previous design solution. The research result of this thesis could be taken as a reference for the future similar projects.

Mechanism analysis and application of cement-soil mixing pile in soft roadbed treatment

2018 ◽  
Vol 28 (2) ◽  
pp. 161-172
Author(s):  
JUNHUI LUO ◽  
XIANLIN LIU ◽  
HAIFENG HUANG ◽  
DECAI MI ◽  
DEQIANG CHE
Keyword(s):  
Mechanism Analysis ◽  
Soil Mixing ◽  
Cement Soil

Application Research on Composite Foundation of Rammed Soil-Cement Piles Applied in the Da-Guang Expressway from Gu'an to Shenzhou

2013 ◽  
Vol 740 ◽  
pp. 655-658
Author(s):  
Huan Sheng Mu ◽  
Ling Gao
Keyword(s):  
Soft Soil ◽  
Composite Foundation ◽  
Application Research ◽  
Action Mechanism ◽  
Foundation Design ◽  
Soil Cement ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Cement Soil ◽  
Capacity Characteristic

Through the practice of tamped cement soil pile in treatment of soft soil foundation in Guan to Shenzhou section of Daqing-Guangzhou Expressway, the author expounds the action mechanism of rammed soil cement pile, composite foundation design points and calculation method of bearing capacity characteristic value.

scholarly journals Construction Technology and Mechanical Properties of a Cement-Soil Mixing Pile Reinforced by Basalt Fibre

2017 ◽  
Vol 2017 ◽  
pp. 1-14
Author(s):  
Yingwei Hong ◽  
Xiaoping Wu ◽  
Peng Zhang
Keyword(s):  
Mechanical Properties ◽  
Core Sample ◽  
Strength Test ◽  
Construction Technology ◽  
Basalt Fibre ◽  
Soil Mixing ◽  
New Type ◽  
Tensile Splitting Strength ◽  
Cement Soil ◽  
Drilling Core

A new type of cement-soil mixing pile reinforced by basalt fibre is proposed for increasing the bearing capacity of cement-soil mixing piles. This work primarily consists of three parts. First, the process of construction technology is proposed, which could allow uniform mixing of the basalt fibre in cement-soil. Second, the optimal proportions of the compound mixtures and the mechanical properties of the pile material are obtained from unconfined compression strength test, tensile splitting strength test, and triaxial shear test under different conditions. Third, the reliability of the construction technology, optimal proportions, and mechanical properties are verified by testing the mechanical properties of the drilling core sample on site.

Effect of Solidification Mechanism of Nanometer Ore Powder Cement Soil on the Late Formation of Composite Foundation

2021 ◽  
Vol 219 (1) ◽  
pp. 189-203
Author(s):  
Yanyan Cai ◽  
Zehan Liu ◽  
Jin Yu ◽  
Wei Yao ◽  
Xueying Liu
Keyword(s):  
Composite Foundation ◽  
Cement Soil ◽  
Solidification Mechanism

The Asymptotic Homogenization Method of the Settlement Calculation of the Cement-Soil Pile Composite Foundation

2011 ◽  
Vol 217-218 ◽  
pp. 390-395
Author(s):  
Ming Qin Guo ◽  
Jie Li ◽  
Shi Cheng Ma ◽  
Zhi Lin Liu
Keyword(s):  
Elastic Foundation ◽  
Three Dimensional ◽  
Elastic Parameter ◽  
Homogenization Method ◽  
Calculation Model ◽  
Composite Foundation ◽  
Homogenization Theory ◽  
Asymptotic Homogenization ◽  
Asymptotic Homogenization Method ◽  
Cement Soil

The finite element calculation model of the cement-soil pile composite foundation based on asymptotic homogenization theory has been built, under the state of three-dimensional stress, the equivalent elastic parameter of the composite elastic foundation model has been calculated, and depending on which, the settlement quantity has been calculated. Analysis through comparison with the testing result shows that it is feasible to use the homogenization method for calculating the settlement quantity of the composite elastic foundation, which sets up a theoretical basis for further analysis of homogenization method about composite foundation.

Numerical Simulation of Reinforcement Effect and Settlement of Concrete Pile Composite Foundation

2013 ◽  
Vol 779-780 ◽  
pp. 434-438
Author(s):  
Dao Fang Wang ◽  
Xue Qing Wang ◽  
Nan Tong Zhang ◽  
Yan Chen
Keyword(s):  
Numerical Simulation ◽  
Influence Factors ◽  
Simulation Method ◽  
Composite Foundation ◽  
Reinforcement Effect ◽  
Numerical Simulation Method ◽  
Concrete Pile

The differential and large settlement may have a great effect on the construction and maintenance of highway. Based on the study of concrete pile composite foundation, the effect of concrete pile composite foundation on reinforcement and influence factors of settlement are analyzed in the paper. The effects of pile modulus and embankment modulus on settlement with numerical simulation method are analyzed in the paper. The result of numerical simulation method is that the settlement of embankment may be reduced with the method of concrete pile composite foundation and pile modulus may have a great effect and embankment modulus may have some effect on the settlement of embankment.

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