A New Prestress Loss Calculation Model of Anchor Cable in Pile–Anchor Structure

Xing Gao, Jinqing Jia, Guoxiong Mei, Xiaohua Bao, Lihua Zhang and Xiaoping Liao
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Xing Gao: The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
Jinqing Jia: The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
Guoxiong Mei: College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
Xiaohua Bao: School of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518061, China
Lihua Zhang: The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
Xiaoping Liao: Northwest Research Institute Co., Ltd. of China Railway Engineering Corporation, Lanzhou 730000, China

Mathematics, 2022, vol. 10, issue 8, 1-18

Abstract: Pile–anchor structures are widely used in foundation excavation and slope reinforcement due to their safety and reliability. However, the pile–anchor structures have the common problem of the prestress loss of anchor cables, which may reduce the stability of the structures. To accurately predict the prestress loss of anchor cables, a new prestress loss calculation model was established, and the availability of the prestress loss calculation model was verified through engineering cases. Meanwhile, aiming at the long-term prestress loss of anchor cables, the coupled creep behavior of anchor cable–rock and soil was studied and an anchor cable–rock and soil coupled creep model suitable for pile–anchor structures is proposed. The model test confirms that the coupled creep model could accurately describe the coupled creep behavior of the anchor cable and the rock and soil mass. The models provide a theoretical basis for the study of the prestress of anchor cables in pile–anchor structures, and have a guiding significance for the design and construction in foundation excavation and slope engineering.

Keywords: pile–anchor structure; coupled creep model; prestress loss; prestressed anchor cable; model test; field test (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
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