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International Journal of Soil Science
  Year: 2018 | Volume: 13 | Issue: 1 | Page No.: 18-27
DOI: 10.3923/ijss.2018.18.27
 
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Comparison of Constitutive Soil Models in Predicting Movements Caused by an Underground Excavation

Arash Sekhavatian and Asskar Janalizadeh Choobbasti

Abstract:
Background and Objective: The design of high-rise buildings often necessitates ground excavation, where buildings are in proximity to the construction, thus there is a potential for damage to these structures. As a result, various researchers have studied different aspects of excavations both in design and construction methods. In present study, it is aimed to evaluate the performance of constitutive soil models in a case study of anchored wall by using a finite difference analysis software. Materials and Methods: For this purpose, implications of the use of some advanced soil models to simulate the behavior of in-situ soil on the overall response of excavated wall have been studied and compared with respect to the most prevalent used Mohr-Coulomb (MC) soil model. The analyses concentrated on predicting three major behavior of tieback walls, i.e., excavation basal heave, horizontal displacement and deflection pattern of the wall. Results: The results indicated that Duncan-Chang (DC) model can reasonably predict the movements induced by excavation projects, while the modified Mohr-Coulomb (MMC) model also can be an alternative in estimating base heave and horizontal displacement at top of the wall when insufficient data is available. Conclusion: The findings of this research could be of interest to the engineers in order to achieve an optimum compromise between model accuracy and geotechnical survey efforts employed in deformation analysis of excavation problems.
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How to cite this article:

Arash Sekhavatian and Asskar Janalizadeh Choobbasti, 2018. Comparison of Constitutive Soil Models in Predicting Movements Caused by an Underground Excavation. International Journal of Soil Science, 13: 18-27.

DOI: 10.3923/ijss.2018.18.27

URL: https://scialert.net/abstract/?doi=ijss.2018.18.27

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