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Date of Award
2025
Document Type
Campus Access Master's Report
Degree Name
Master of Science in Civil Engineering (MS)
Administrative Home Department
Department of Civil, Environmental, and Geospatial Engineering
Advisor 1
Mohammadhossein Sadeghiamirshahidi
Committee Member 1
Veronica L. Webster
Committee Member 2
Sai Sandeep Chitta
Abstract
The effects of spatial variability on the bearing capacity of deep soil mixing columns are critical in understanding and improving their performance in soft and weak soils. This study investigates the effects of spatial variability in strength parameters and in column geometry on the bearing capacity of deep soil mixing columns. By employing Monte Carlo simulations and the validated finite volume models, the research analyzes the mechanical response of DSM columns under axial loading. Results reveal that spatial variability in strength parameters reduces the peak bearing capacity of DSM columns by approximately 21%, with average peak stress decreasing from 570 kPa (DSM column with uniform strength parameters) to 450 kPa (DSM with random variability in strength parameters). Additionally, variability in column diameters introduces a 3.8% coefficient of variation, reducing the average ultimate stress to 520 kPa. These findings highlight the significant impact of spatial variability on deep soil mixing column performance, emphasizing the need for quality control during construction to achieve uniform strength distribution and consistent column geometry. Such improvements are essential to enhance the load-bearing capacity, stiffness, and overall reliability of deep soil mixing columns in geotechnical engineering applications.
Recommended Citation
Yano, Kipkorir Y., "Effects of Spatial Variability on Bearing Capacity of Deep Soil Mixing Columns", Campus Access Master's Report, Michigan Technological University, 2025.
