Qi Feng
Qi Feng has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Fengjin Chen
Fujian Rongsheng Construction and Development Co., Ltd., Fuzhou 350001, China
1 shared publication - Guimei Zhu
College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
1 shared publication - Jingkang Shi
College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
1 shared publication - Zhenchang Guan
College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
1 shared publication
Latest Publications
- Open Access
- 13 March 2026
- Published by MDPI AG in Applied Sciences
- Vol. 16 (6) , 2766
The Mechanical Behavior and Segmentation Optimization of Prefabricated Lining for Railway Tunnels: A Case Study of the Yongfengcun Tunnel in China
Prefabricated lining is increasingly used in railway tunnels due to its advantages of environmental friendliness, high construction efficiency, and convenience. However, the existence of block joints weakens structural integrity, and the segmentation optimization of prefabricated lining remains a challenge especially for irregular lining. Based on the Yongfengcun tunnel in the Fuzhou Ganghou Railway Project, the nonlinear mechanical behaviors of joint stiffness were investigated under axial force, bending moment and shear force. A beam–spring model was established by considering the bending and shearing stiffness of block joints, and the mechanical behaviors were analyzed efficiently by Python 3.9 and ABAQUS 2025 for 572 segmentation schemes. Based on a Delphi questionnaire, three key indicators including horizontal convergence, bending moment amplitude and length variance were selected as independent optimization objectives. The stable Pareto frontier was obtained using the NSGA-II algorithm. Application in the Yongfengcun tunnel fully verified the effectiveness of the method.
- 13 March 2026
- Published by MDPI AG in Applied Sciences
- Vol. 16 (6) , 2766
Open AccessThe Mechanical Behavior and Segmentation Optimization of Prefabricated Lining for Railway Tunnels: A Case Study of the Yongfengcun Tunnel in China
Prefabricated lining is increasingly used in railway tunnels due to its advantages of environmental friendliness, high construction efficiency, and convenience. However, the existence of block joints weakens structural integrity, and the segmentation optimization of prefabricated lining remains a challenge especially for irregular lining. Based on the Yongfengcun tunnel in the Fuzhou Ganghou Railway Project, the nonlinear mechanical behaviors of joint stiffness were investigated under axial force, bending moment and shear force. A beam–spring model was established by considering the bending and shearing stiffness of block joints, and the mechanical behaviors were analyzed efficiently by Python 3.9 and ABAQUS 2025 for 572 segmentation schemes. Based on a Delphi questionnaire, three key indicators including horizontal convergence, bending moment amplitude and length variance were selected as independent optimization objectives. The stable Pareto frontier was obtained using the NSGA-II algorithm. Application in the Yongfengcun tunnel fully verified the effectiveness of the method.