Experimental Study on Consolidation Characteristics of Compacted Loess. (7th June 2021)

• Record Type: Journal Article
• Authors: Li, Jinhua; Zhao, Songwei; Wang, Xiong; Hao, Jiaqi; Zhi, Bin; Zhang, Hui; Deng, Botuan
• Other Names: Xu Jian Academic Editor.
• Is Part Of: Advances in civil engineering. Volume 2021(2021)
• Publication Date: 2021-06-07
• Subjects: Civil engineering -- Periodicals; Civil engineering; Periodicals; 624
• DOI: 10.1155/2021/6687858
• Languages: English
• ISSNs: 1687-8086

Abstract

Abstract : The prediction of foundation settlement is an important topic in loess filling engineering. Based on a filled foundation in Yan'an, China, this study explores the consolidation characteristics of compacted loess with different compaction energy and consolidation pressure through consolidation tests, analyzes the strain-time curve and refines the curve within 2 h, separates the primary and secondary consolidations, and obtains the critical time point between the primary and secondary consolidations. Deformation rate S t ′ and cumulative deformation S t were introduced to analyze the S t ′ − S t curve at the secondary consolidation stage; the secondary consolidation coefficient was employed to describe the secondary consolidation characteristics of compacted loess. According to the secondary consolidation characteristics, a prediction model of loess settlement considering different compaction energy and fill thickness was proposed, and the applicability of the model was further analyzed. The model will facilitate in guiding the design and construction of loess filling engineering.