Estimation of the subgrade reaction modulus using field and numerical analysis methods

Subgrade soil's reaction coefficient is of high importance in designing superficial structures. Different researches have been made in determining ultimate bearing capacity of shallow foundations. The ultimate bearing capacity of shallow strip footings is generally determined (Terzaghi, ۱۹۹۶). Especially in metropolises, the increase in the number of building stories and subsequently increase in loading measure on underlying soil makes this matter more important. So far various methods have been applied to estimate the suitable level of this coefficient which most substantial ones include various empirical relations, types of numerical modeling and using field experiments. In present study the value of this coefficient for the soil of Fereshteh alley district in Tabriz has been determined through various empirical and numerical ways and field experiments of plate loading and in the end an equation has been provided to estimate the subgrade soil's reaction coefficient.Subgrade soil's reaction coefficient is of high importance in designing superficial structures. Different researches have been made in determining ultimate bearing capacity of shallow foundations. The ultimate bearing capacity of shallow strip footings is generally determined (Terzaghi, ۱۹۹۶). Especially in metropolises, the increase in the number of building stories and subsequently increase in loading measure on underlying soil makes this matter more important. So far various methods have been applied to estimate the suitable level of this coefficient which most substantial ones include various empirical relations, types of numerical modeling and using field experiments. In present study the value of this coefficient for the soil of Fereshteh alley district in Tabriz has been determined through various empirical and numerical ways and field experiments of plate loading and in the end an equation has been provided to estimate the subgrade soil's reaction coefficient.

کلیدواژه ها:

Subgrade reaction coefficient ، Plate loading experiment ، Numerical modeling ، Vesic equation