Seismic Analysis of Immersed Tube Tunnel for Hong Kong-Zhu Hai-Macao Bridge Project

Abstract:

A simplified seismic calculation model of immersed tunnel is built up, which is applied to the seismic analysis of Hong Kong-Zhu Hai-Macao Bridge Project’s immersed tube tunnel. According to different spring stiffness of foundation and different spring stiffness of joint, the tunnel and joint’s force and deformation conditions are compared. The results show that: the influence of foundation spring stiffness is significant, for engineering design, the foundations of a more flexible approach should be preferred; contrary to joint force, the joint opening increases with the increase of joint stiffness, thus, flexible joint is better for project; the connection parts of floor and wall, the connection parts of roof and wall are the most disadvantageous position during the earthquake, so, these parts’ design strength should be strengthened and deformation control should be taken.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 1723-1727
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.1723
• Online since: May 2011
• Authors: Xiao Yong Hu, Xiao Xu Zhang, Yu Liang Qiu, Wei Hua Dong, Bao Wen Kou
• Keywords: Design, Earthquake, Immersed Tube Tunnel, Joint

References

[1] Songhong Yan, Feng Gao, Dewei Li, et al: Chinese Journal of Rock Mechanics and Engineering, Vol. 23 (2004), P. 846-850, in Chinese.

[2] Jiyang Fu, Jiu-rong Wu, An Xu: Journal of Hunan University (Natural Sciences), Vol. 35 (2008), P. 23-27, in Chinese.

[3] Guihong Chen: China Railway Science, Vol. 26 (2005), P. 93 -97, in Chinese.

[4] Dajian Han, Axing Zhou. Journal of South China University of Technology: Natural Science, Vol. 27 (1999), P. 108-114, in Chinese.