نوع مقاله : مقاله پژوهشی
نویسندگان
گروه مهندسی عمران، دانشکده فنی، دانشگاه گیلان، رشت، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The shear wave velocity V_s and the small strain shear modulus G_max are crucial parameters for assessing the dynamic properties of soil and the seismic characteristics of a site. Field trials to quantify these factors may be challenging and costly, limiting their feasibility. It is essential to indirectly determine V_s and G_max and use empirical equations that are linked to the SPT number. This research focused on the seismic zone in the northern regions of Iran, where construction is rapidly on the rise. Field tests were conducted by drilling 11 boreholes and analyzing the correlation between SPT number, shear wave velocity, and small strain shear modulus in clayey, sandy, and silty soil types. The results were validated using data from three boreholes in a different area of northern Iran. G_max is a parameter dynamic characteristic of soils that reflects the hardness of geomaterials under shear deformation. Variations in the specific weight of soil layers affecting the small strain shear modulus were analyzed by correlating the SPT number to the small strain shear modulus. The research findings demonstrated a strong correlation between SPT number, shear wave velocity, and small strain shear modulus. Previous studies and validation of the data have verified the models proposed in this research. Clayey soils are more sensitive to changes in the specific weight of each layer than sandy and silty soils. Since this sensitivity shows a non-linear equation, it is important to consider the specific weight of each layer of soil when determining correlations for clays.
کلیدواژهها [English]
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