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| dc.contributor.author | Abrham, Yimam Akal | |
| dc.date.accessioned | 2021-08-17T08:04:09Z | |
| dc.date.available | 2021-08-17T08:04:09Z | |
| dc.date.issued | 2021-05-18 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/12463 | |
| dc.description.abstract | Geotechnical Stability Analysis of Square Footing on a Stratified Soil, 3D Numerical Based Parametric Analysis Bearing capacity analysis of the layered soil is the most basic parameters that a geotechnical engineer deals with while analyzing or recommending foundation strength for any type of structure. Foundations of structures are designed to transfer and distribute their loading to the underlying soil and/or rock. The soil must be capable of carrying the loads from any engineering structure placed upon it without a shear failure and with the tolerable settlements being tolerable for that structure is called bearing capacity of soil. Predicting the ultimate bearing capacity of footings on layered soil is very important as it is a requirement for any design and the failure mechanism of soil under the footing and the bearing capacity value mainly depends on the soil properties of each layer and the layer thickness. Literature reviews were is included in this research previously studies about bearing capacity analysis of layered soil using analytically and numerically. The available theories in the literature do not provide accurate and reliable predictions of the conventional bearing capacity analysis of different layered soil due to the inconsideration of some parameter. In this study, to covered detail comparisional analysis of ultimate bearing capacity of layered soil between conventional methods like Meyerhof and Hanna equation and recently developed techniques like finite element software (ABAQUS). These studies concerned about the geotechnical stability analysis of footing in four different case of layered soil system using FEM. Those are clay that has different cohesive values, sand overlaying with clay soil and vise versa, and finally frictional cohesive soil of layered stratum. The comparison results of bearing capacity between two method of analysis are in good well. It has been observed that some factors affected the bearing capacity of the soil, such as soil layer thickness, soil properties, and applied stress which is not taken into consideration in the conventional bearing capacity theories. Such simplification causes conservative structural design. The solution quality and the calculation duration time of a finite element solution is highly dependent on the number of elements or mesh sizes used for analysis. In this thesis also seen; the effect of clay depth on bearing capacity and displacement of soil, shear strength effect of clay on failure mechanism development, and the effect of material properties on magnitude and direction of displacement seen in this research. | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | CIVIL AND WATER RESOURCE ENGINEERING | en_US |
| dc.title | GEOTECHNICAL STABILITY ANALYSIS OF SQUARE FOOTING ON A STRATIFIED SOIL, 3D NUMERICAL BASED/FE PARAMETRIC ANALYSIS | en_US |
| dc.type | Thesis | en_US |
