Affiliation:
1. Southwest Jiaotong University
2. China Railway ErYuan Engineering Group Co. Ltd
Abstract
On the basis of different landform and multifarious topography in rugged mountainous area in southwest China, typical tunnel portals for single track tunnels in a new high speed railway line have been presented in the paper. The portal comprises headwall, shed tunnel, bridge abutment and its support. Portal with headwall is suitable for tunnel to resist front earth pressure on high and abrupt slope. Shed tunnel is placed in front of headwall so as to prevent rockfall; its outward part is built into a flared one. Meanwhile, the installation of bridge and its abutment are also included in the portal according to landform in the paper.
Publisher
Trans Tech Publications, Ltd.
Reference5 articles.
1. Zhou Xiaojun, Jiang Bo, Yang Rui, Ning Chao. Design of high speed railway tunnel and its construction method in abrupt slope with loose rockmass. Applied Mechanics and Materials, 2014, Vols: 580-583, p.1096~1099.
2. Zhou Xiaojun, Wang Jinghe, Lin Bentao. Study on calculation of rock pressure for ultra-shallow tunnel in poor surrounding rock and its tunneling procedure. Journal of Modern Transportation. 2014, 22(1): pp: 1-11.
3. Zhou Xiaojun, Wang Jinghe, Hu Hongyun, Wang Xiaofeng. Structural Design of Highway Tunnel in Loose Surrounding Rock and its Tunneling Procedure. International Conference on Transportation, 2013, pp: 80-87.
4. Zhou Xiaojun, Wang Xiaofeng. Design of Shallow Depth Tunnel with Asymmetric Twin Arches and its Construction Procedure in Poor Rock Mass. Applied Mechanics and Materials, 2013, Vols: 353-356, p.1321~1324.
5. Zhang Junru, Qiu Wenge. 3D FEM analysis on mechanical behavior of a new style railway tunnel portal. Underground Space Use. Taylor & Francis Group, London, 2005. P: 1161-1166.