http://www.iaeme.com/IJCIET/index.asp 1223 editor@iaeme.com International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 10, October 2018, pp. 1223–1230, Article ID: IJCIET_09_10_121 Available online at http://www.iaeme.com/ijciet/issues.asp?JType=IJCIET&VType=9&IType=10 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 ©IAEME Publication Scopus Indexed PARAMETRIC STUDY OF SHALLOW FOUNDATION BEARING CAPACITY IN CLAYEY SOIL Mohanned Q. Waheed Civil Engineering Department University of Technology, Baghdad, Iraq Noor M. Asmael Highway and Transportation Engineering Department Faculty of Engineering, Mustansiriyah University, Baghdad, Iraq. ABSTRACT In the present study, a numerical analysis was carried out on the behavior of shallow foundation subjected to vertical axial loading in clayey soil. The analysis is performed using the Plaxis-3D program for developing the finite element model. The purpose of this study was to assess the effect of some parameters on the load- settlement relationship and evaluate the (Nc) factor of bearing capacity equation. The parameters considered included Poisson’s ratio of soil, soil modulus of elasticity, foundation width and soil cohesion. It was found that an increasing of the Poisson’s ratio of soil increase slightly the load capacity at small settlements of the foundations, whereas it showed significant effect at large settlements to reach about (25%) at final stages of settlement. The foundation load capacity increases significantly with the increase in the soil modulus of elasticity. Increasing the foundation width does not have a significant effect on the value of the bearing pressure, so that the scale effect could not be observed. Variation undrained cohesion of soil had no effect on the (Nc) factor of bearing capacity at a certain value of settlement ratio (S/B), however, it is found equal (6), while with the increase in settlement ratio the (Nc) factor increases. Key words: Bearing capacity, Shallow foundation, Plaxis, Clay. Cite this Article: Mohanned Q. Waheed and Noor M. Asmael, Parametric Study of Shallow Foundation Bearing Capacity in Clayey Soil, International Journal of Civil Engineering and Technology (IJCIET) 9(10), 2018, pp. 1223–1230. http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=9&IType=10 1. INTRODUCTION Soil is the most important material which is used for construction of engineering structures, therefore, it is necessary to understand and study the behaviour of the soil under loads and the