EXPERIMENTAL STUDIES OF COHESION EFFECT ON STABILITY OF SOIL SLOPES REINFORCED WITH STONE COLUMN

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HAJIAZIZI M.; NASIRI M.

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Journal: Modares Civil Engineering journal Year:2017 | Volume:17 | Issue:1 Page(s): 65-77

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Title

EXPERIMENTAL STUDIES OF COHESION EFFECT ON STABILITY OF SOIL SLOPES REINFORCED WITH STONE COLUMN

Author(s)

HAJIAZIZI M. | NASIRI M. | Issue Writer Certificate

Keywords

EARTH SLOPESQ1

STONE COLUMNQ1

COHESIONQ1

STABILITYQ1

Abstract

The increasing demand for engineered cut and fill slopes on construction goals has increased the need of understanding the analytical methods, investigation tools and the most important stabilization methods to solve slope STABILITY problems. The first step to maintain the STABILITY of soil slope is performing excavation in the slope crest or/and filling the slope toe. This is the cheapest method for stabilization of soil slopes. If the method cannot provide the required factor of safety, it is necessary to use other stabilization methods. Numerical and laboratory approaches are useful for modeling soil slopes stabilization. Modeling the STABILITY of EARTH SLOPES using numerical methods is a common practice in geotechnical engineering. Moreover, stabilization of soil slopes using piles has been practiced by many researchers in numerical and analytical approaches. Although numerical and analytical methods have special capabilities, laboratory modeling is more reliable. STABILITY slope analysis has attracted lots of researchers around the world and it shows the significance of this matter. When suspicious about STABILITY of soil slopes, immediate actions and preventative steps should be used for suppression of instability occurrence. Many projects intersect with valleys and rides, which can be prone to slope STABILITY problems. Natural slopes that have been stable for many years may suddenly fail because of many reasons; therefore, finding useful techniques for stabilizing them is a great concern for geotechnical engineers. In all soil slopes, the primary way for stabilization is the excavation in slope crest and/or filling slope toes. If this would not increase safety factor, other procedures should be applied. Three common styles of stabilization methods are; vertical reinforcement (such as STONE COLUMNs and piles), horizontal reinforcement (like Geo-grids), oblique reinforcement (such as nailing). One of the common methods that is used to increase the safety factor of slopes is STONE COLUMNs. All of the experimental tests were modeled and compared using the limit equilibrium (LE) and finite element (FE) methods, which are compliant with each other. Understanding soil properties is crucial for analysis of soil slopes. In this study, the effect of COHESION in embankment is investigated. This is carried out by performing laboratory tests and using finite element method software (PLAXIS2D) and finite difference method software (FLAC3D). A sand slope is reinforced with a STONE COLUMN at the middle of slope. It is then saturated by precipitation and loaded up to the failure. Experimental studies in this article have the potential to give valuable information about the effects of embankment COHESION and penetration depth of STONE COLUMN into the stiffer layer, in STABILITY of STONE COLUMN reinforced soil slopes.

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APA: Copy

HAJIAZIZI, M., & NASIRI, M.. (2017). EXPERIMENTAL STUDIES OF COHESION EFFECT ON STABILITY OF SOIL SLOPES REINFORCED WITH STONE COLUMN. MODARES CIVIL ENGINEERING JOURNAL, 17(1 ), 65-77. SID. https://sid.ir/paper/256936/en

Vancouver: Copy

HAJIAZIZI M., NASIRI M.. EXPERIMENTAL STUDIES OF COHESION EFFECT ON STABILITY OF SOIL SLOPES REINFORCED WITH STONE COLUMN. MODARES CIVIL ENGINEERING JOURNAL[Internet]. 2017;17(1 ):65-77. Available from: https://sid.ir/paper/256936/en

IEEE: Copy

M. HAJIAZIZI, and M. NASIRI, “EXPERIMENTAL STUDIES OF COHESION EFFECT ON STABILITY OF SOIL SLOPES REINFORCED WITH STONE COLUMN,” MODARES CIVIL ENGINEERING JOURNAL, vol. 17, no. 1 , pp. 65–77, 2017, [Online]. Available: https://sid.ir/paper/256936/en

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