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| Analytical solution of load transfer of inclined partial-cohesive anchor cable during the whole pull-out process |
| HAN Jianyong1, 2, ZHAO Wen3, CHEN Yang4*, BAI Xiaoyu5, JIA Pengjiao6, LI Tianliang7 |
(1. School of Civil Engineering, Shandong Jianzhu University, Jinan, Shandong 250101, China; 2. Key Laboratory of Building Structural Retrofitting and Underground Space Engineering of Ministry of Education, Shandong Jianzhu University, Jinan, Shandong 250101, China; 3. School of Resources and Civil Engineering, Northeastern University, Shenyang,
Liaoning 110004, China; 4. School of Civil Engineering and Architectural, Xi?an University of Technology, Xi?an,
Shanxi 710048; 5. School of Civil Engineering, Qingdao University of Technology, Qingdao, Shandong 266033,
China; 6. School of Rail Transportation，Soochow University, Suzhou, Jiangsu 215002, China;
7. PipeChina Engineering Technology Innovation Co., Ltd., Tianjin 300457, China) |
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Abstract Due to the nonlinear characteristics of the pullout behavior of partially cohesive anchor cables, developing a theoretical analytical method for their load transfer mechanism poses certain challenges. This study focuses on the mechanical behavior of the anchorage interface and proposes a shear stress calculation method for the grout-soil interface. Based on the typical pullout failure characteristics of anchor cables, analytical solutions for the load transfer of inclined partially cohesive anchor cables are derived for both the elastic stage and the slippage development stage. On this basis, the distribution characteristics of axial stress and interfacial shear stress of the partial cohesive anchor cable in soil under pullout load are systematically analyzed, revealing the failure evolution throughout the pullout process. The results indicate that the grout in the free section of the partially cohesive anchor cables provides significant resistance to overall pullout performance. The axial stress in the steel strand of the anchorage section follows a hyperbolic sine distribution, while the maximum axial compressive stress of the grout occurs at the junction between the free and anchorage sections, with a tensile stress zone emerging at the bottom of the anchorage section. During the slippage development stage, the length of the interfacial plastic zone at both the free and anchorage sections generally demonstrates a linear relationship. The proposed analytical method effectively captures the shear slip behavior at the anchorage interface of inclined partially cohesive anchor cables and elucidates the corresponding load transfer mechanism, thereby providing theoretical support for understanding their pullout failure evolution and for the design of temporary reinforcement systems in slopes or excavations.
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2026, Vol. 45 
