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Số người truy cập: 107,343,530

 Effect of footing roughness on ultimate bearing capacity of rigid strip footing on sandy soil slope
Tác giả hoặc Nhóm tác giả: Pham N. Quang*, and Pham N. Vinh
Nơi đăng: The University of Danang - Journal of Science and Technology, ISSN: 1859-1531.; Số: Vol. 21, No. 12.1;Từ->đến trang: 22-27;Năm: 2023
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Trong nước
TÓM TẮT
This extensive study explores the determination of the ultimate bearing capacity of a rigid strip footing on a sandy slope through the utilization of the Rigid Plastic Finite Element Method (RPFEM). To accurately represent a wide range of frictional conditions at the footing roughness, a new interface element was introduced, capable of accommodating both perfectly rough and perfectly smooth conditions. A new constitutive equation is introduced to model these interface elements, which had a significant influence on the failure mode of the strip footing. Moreover, the study focuses on assessing critical parameters, including the internal friction angle of the sandy ground, as well as slope geometry parameters (slope angle b, edge distance L, and slope height H). The RPFEM results illustrate that increasing the edge distance positively influences the bearing capacity, while a higher slope angle exerts a negative effect. Notably, variations in slope height produce consistent outcomes, regardless of the frictional conditions.
ABSTRACT
This extensive study explores the determination of the ultimate bearing capacity of a rigid strip footing on a sandy slope through the utilization of the Rigid Plastic Finite Element Method (RPFEM). To accurately represent a wide range of frictional conditions at the footing roughness, a new interface element was introduced, capable of accommodating both perfectly rough and perfectly smooth conditions. A new constitutive equation is introduced to model these interface elements, which had a significant influence on the failure mode of the strip footing. Moreover, the study focuses on assessing critical parameters, including the internal friction angle of the sandy ground, as well as slope geometry parameters (slope angle b, edge distance L, and slope height H). The RPFEM results illustrate that increasing the edge distance positively influences the bearing capacity, while a higher slope angle exerts a negative effect. Notably, variations in slope height produce consistent outcomes, regardless of the frictional conditions.
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