Three-dimensional numerical investigation on lateral movement and factor of safety of slopes stabilized with deep cement mixing column rows

Jamsawang, Pitthaya; Voottipruex, Panich; Boathong, Phermphorn; Mairaing, Warakorn; Horpibulsuk, Suksun

doi:10.1016/j.enggeo.2015.01.017

Cited by 85 publications

(17 citation statements)

References 39 publications

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“…Jet grouting is invented based on the combination of hydraulic mining technology and grouting technique and has become one of the most popular ground improvement techniques in different construction fields for preventing geohazards in worldwide area [1][2][3][4][5][6][7][8][9][10][11][12][13]. Jet grouting is generally adopted to strengthen soft soil, such as ground improvement during deep excavations and tunnel construction [14][15][16][17][18][19][20][21][22][23][24][25][26][27] and reinforcement of embankment foundation [28][29][30][31][32]. Considering the types of fluids jetted from the nozzles, jet grouting systems can be divided into three categories [33][34][35]: (i) single fluid system (injection of high pressurized grout), (ii) double fluid systems (injection of high pressurized grout and compressed air), and (iii) triple fluid systems (injection of high pressurized water, compressed air, and low pressurized grout).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Ground Displacements Caused by Installing Jet Grouted Columns Using Machine Learning Methods

Wang

Peng

Liu

et al. 2020

Advances in Civil Engineering

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During the jet grouting process, large volumes of high pressurized fluids injected into the soils will cause significant ground displacements, which may bring harmful impacts on surrounding environment. Therefore, it is essential to provide an accurate estimation of the ground displacement in the design stage. Based on multiple nonlinear regression (MNLR) and support vector regression (SVR), the prediction approaches are established, respectively. The column radius (Rc), Young’s modulus (E), and distance from column center to target point (LOA) are selected as the input parameters, while the displacement of target point A at the radial direction (δA) is taken as the output parameter. Comparisons results on the prediction performance of ground displacements indicate that the MNLR-based approach has a better prediction effect. The design charts of the MNLR-based approach for predicting the ground displacement are created, which will be helpful for the practicing engineers to get a quick estimation.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Ground Displacements Caused by Installing Jet Grouted Columns Using Machine Learning Methods

Wang

Peng

Liu

et al. 2020

Advances in Civil Engineering

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“…Deep Mixing Method (DMM) is almost the most effective method for soft soil improvement, which has become very popular in recent years (Shen et al., 2008; Chai and Carter, 2011; Oliveira et al., 2011; Jamsawang et al., 2015; Wonglert and Jongpradist, 2015; Pi. Jamsawang et al., 2016a, Jamsawang et al., 2016b; Sargent et al., 2016; Güllü et al., 2017; Jamsawanga et al., 2017; Kitazume and Terashi, 2017).…”

Section: Introductionmentioning

confidence: 99%

Effect of Cutter Soil Mixing (CSM) method and curing pressures on the tensile strength of a treated soft clay

Rabbani

Lajevardi

Tolooiyan

et al. 2019

Heliyon

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This study presents a set of laboratory experiments to investigate the effect of Cutter Soil Mixing (CSM) method and curing pressures on the tensile strength of a soft clay treated with Air Cooled Blast Furnace Slag (ACBFS) and Industrial Hydrated Lime (IHL). High productivity, minimum vibration, using the in-situ soil as construction material, and high level of quality control are some of the main benefits of CSM method. Three different slurries containing various percentages of ACBFS and IHL were mixed with saturated soft clay due to CSM method to enhance its tensile strength and make it suitable for the construction of deep CSM panels. To simulate high pressure due to the self-weight of the deep CSM panels in the field, a number of high pressure curing devices were designed and built in the laboratory and used for 28 and 56 day pressurised curing of the treated samples. Then an indirect tensile strength test was performed on the treated samples to investigate the effect of mixing method, ACBFS-IHL content, curing pressure and curing time on the tensile strength of the treated material. Finally, X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analysis were conducted to investigate the microstructural and properties of the treated clay. The outcomes demonstrate that using CSM method and curing pressures along with ACBFS-IHL as a chemical stabiliser, increases the tensile strength of treated soft clay up to 35 times, which is significantly higher than the use of chemical stabiliser alone. Moreover, the microstructural analysis results revealed that the main hydration products in the clay treated with ACBFS-IHL is gismondine (C–A–S–H) which is also considered to be responsible for the higher tensile development.

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“…This process can change the strength and the modulus of soft soils, thus solidifying soft soil strata [2]. With the development of construction equipment, solidified soil piles have been widely used to reduce settlement [3], reinforce slope [4], and stabilize foundations of embankment [5][6] because of their fast pile-forming and high construction efficiency. However, solidified soil piles show evident brittle behaviors in practical engineering.…”

Section: Introductionmentioning

confidence: 99%

Study on the Horizontal Bearing Capacity of Solidified Soil–tube Composite Piles

Zhou¹

2018

JESTR

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The horizontal stiffness of composite piles is an important factor influencing the horizontal bearing capacity of composite piles. However, this factor has been analyzed through field experiences rather than theoretically by other researchers. In this study, a calculation formula for analysis of this factor was deduced through an elastic-plasticity theoretical analysis. The formula was used to investigate influences of solidified soils on the horizontal stiffness and the bearing capacity of composite piles in accordance with stress mechanism under horizontal loads. Then, the differential equation of composite piles deflection under the combined stiffness was achieved. On this basis, a one-way cyclic loading test on six piles was performed on the site. Results demonstrate that solidified soil increases the combined stiffness of composite piles in the deformation process from elasticity to plasticity. The characteristic value and the ultimate value of single-pile horizontal bearing capacity in the composite piles are 1.81-2.62 and 2.00-2.25 times those of tubular pipes, respectively. When the length-diameter ratio of tubular pile is more than 27.5, the single-pile horizontal bearing capacity in the composite piles is less affected with the increase of length-diameter ratio of tubular piles. The accuracy of the theoretical analysis on the factor is further verified by the field test. The conclusions can serve as references for engineering design and further research of composite piles.

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Three-dimensional numerical investigation on lateral movement and factor of safety of slopes stabilized with deep cement mixing column rows

Cited by 85 publications

References 39 publications

Evaluation of Ground Displacements Caused by Installing Jet Grouted Columns Using Machine Learning Methods

Evaluation of Ground Displacements Caused by Installing Jet Grouted Columns Using Machine Learning Methods

Effect of Cutter Soil Mixing (CSM) method and curing pressures on the tensile strength of a treated soft clay

Study on the Horizontal Bearing Capacity of Solidified Soil–tube Composite Piles

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