New Approaches in Civil Engineering

New Approaches in Civil Engineering

Interference Effect of Adjacent Strip Footings Placed on Soil Slope

Document Type : Research Paper

Authors
Ahmad Sharifi
Erfan Naderi
Mohsen Gholami
Department of Civil Engineering, Islamic Azad University, Nourabad Mamasani Branch,
10.30469/jnace.2023.422467.1095
Abstract
For various reasons, such as lack of suitable land or architectural considerations, engineers may construct the foundation adjacent to or inside the slope body. Therefore, the problem of the bearing capacity of strip foundations placed on the slope and the safety factor of these slopes has been the focus of many researchers. On the other hand, especially in urban environments, the possibility of foundations being placed adjacent to each other is very high, and for this reason, the interference effect of nearby foundations is another challenge that researchers have investigated. In this research, these two challenges have been integrated and the interference effect of adjacent foundations placed on the body of the slope has been investigated using PLAXIS finite element software. In this way, one foundation is attached to the upper edge of the slope and the other foundation is considered inside the body of the slope. The parameters examined in this study are slope angle, slope length, soil friction angle, and soil cohesion. All of these parameters have been studied in the case of single footing and two interfering footings. The results indicate that an increase in the angle and length of the slope causes a decrease in the bearing capacity of the footing and a decrease in the safety factor of the slope. Also, with the increase of cohesion and friction angle, the bearing capacity of the footing and the safety factor of the slope increased. The interference effect caused an increase in the bearing capacity and a decrease in the safety factor, and by increasing the length of the slope more than 5B at different angles of the slope, the interference effect disappeared.
Keywords
Interference effect
Bearing capacity
Factor of safety
Slope
Strip footing

Subjects

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New Approaches in Civil Engineering
Volume 7, Issue 4
Winter 2024
Pages 11-26