Active Soil Pressure of Unsaturated Soil under Rainfall Conditions. (6th February 2022)

• Record Type: Journal Article
• Authors: Hu, Qizhi; Li, Yugang
• Other Names: Nascimbene Roberto Academic Editor.
• Is Part Of: Advances in civil engineering. Volume 2022(2022)
• Publication Date: 2022-02-06
• Subjects: Civil engineering -- Periodicals; Civil engineering; Periodicals; 624
• DOI: 10.1155/2022/7039420
• Languages: English
• ISSNs: 1687-8086

Abstract

Abstract : To study the change in unsaturated active earth pressure under rainfall conditions, based on the thin layer element method and shear strength formula of unsaturated soil, Iverson analysis was used to improve the traditional Coulomb earth pressure theory, and the active earth pressure formula of unsaturated soil considering the change in matric suction was derived under rainfall infiltration conditions. The results show that the active soil pressure of unsaturated soil considering rainfall is greater than that without rainfall. With the continuous occurrence of rainfall infiltration, the active soil pressure of unsaturated soil first increases, then decreases and finally tends to be stable. The above phenomenon is caused by the change in matric suction during rainfall infiltration.