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

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.

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.

Construction Technique of Cement-Soil Mixing Anchor in Foundation Pit in Soft Soil Area

2011 ◽  
Vol 261-263 ◽  
pp. 1784-1788
Author(s):  
Gan Bin Liu ◽  
Rong Hua Ye ◽  
Li Xu ◽  
Xue Yi Shen
Keyword(s):  
Soft Soil ◽  
Drill Pipe ◽  
Soft Clay ◽  
Mechanical Equipment ◽  
Pullout Capacity ◽  
Foundation Pit ◽  
Construction Technique ◽  
Soil Mixing ◽  
Design Engineers ◽  
Cement Soil

In this paper, the construction technique of a new soil anchor-the cement-soil mixing anchor, which is applicable in the area of soft clay, is introduced. During the construction of the anchor, the drill pipe and blade is served as a reinforced body and formed an anchorage body with the cement-soil body. The material and making, technics parameters, mechanical equipment and construction requirement of the cement-soil mixing anchor are presented firstly. Then, the uplift tests of the cement-soil mixing anchor are carried out, and the ultimate pullout force which is 1.6 times greater than that of the soil nailing in the same condition is obtained. At last, an application of the cement-soil mixing anchor in a foundation pit is given. The test results shown that the application of the cement-soil mixing anchor can reach the expected reinforcement effect. Therefore, this framework can then be used by design engineers to more confidently estimate the pullout capacity of cement-soil mixing anchors under tension loading.

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

Implementation of porous material through eco-tech for deep cement–soil mixing

2017 ◽  
Vol 36 (8) ◽  
pp. 931-939 ◽  
Author(s):  
You-Seong Kim ◽  
Se-Gwan Seo ◽  
Hyoung-Woo Ko ◽  
Jaehong Kim
Keyword(s):  
Porous Material ◽  
Soil Mixing ◽  
Cement Soil

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.

Application of Cement Soil Mixing Pile for Transmission Line

2014 ◽  
Vol 680 ◽  
pp. 370-373
Author(s):  
Qi Xiao ◽  
Bin Yan ◽  
Guo Liang Du
Keyword(s):  
Transmission Line ◽  
Soil Liquefaction ◽  
Soil Mixing ◽  
Enclosure Method ◽  
Cement Soil ◽  
Design And Construction

The mechanism of soil liquefaction and the principle of enclosure method treating subgrade liquefaction are elaborated in this paper.It proves that the grid type cement soil mixing pile enclosing foundation can eliminate liquefaction based on amounts of datum and engineering case.And the means of design and construction are summarized.

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 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.

Application of Cement-Soil Mixing Pile with Bearing Load Plate

2012 ◽  
Vol 170-173 ◽  
pp. 3199-3202
Author(s):  
Peng Li He
Keyword(s):  
Soft Soil ◽  
Soil Layer ◽  
Construction Technology ◽  
Bearing Plate ◽  
Soil Mixing ◽  
Soil Cement ◽  
Bearing Load ◽  
Good Potential ◽  
Layered Ground ◽  
Cement Soil

In order to treat efficiently with the soft multi-layers in the middle of ground, the improved cement-soil double mixed pile is developed and the pile diameter is enlarged in the soft soil layer depth to form the cement-soil mixed column with bearing load plate. The installation mechanism, deep mixing machine, and pile installation procedure of the soil-cement mixed pile with bearing plate is presented. The field test results show that the cement-soil mixing pile with bearing load plate construction technology can ensure the cement mix content and mixing uniformity. The pile strength is greatly higher than conventional cement-soil pile, so it can be used to improved soft multi-layered ground economically and effectively, and it has a good potential application for practice.

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