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隧道建设(中英文) ›› 2019, Vol. 39 ›› Issue (8): 1357-1364.DOI: 10.3973/j.issn.2096-4498.2019.08.018
LYU Gang1, LIU Jianyou1, *, ZHAO Yong2, LIU Fang1, WANG Zhiwei3
吕刚1, 刘建友1,*, 赵勇2, 刘方1, 王志伟3
摘要:
Tsinghuayuan Tunnel of BeijingZhangjiakou Highspeed Railway is the first fully prefabricated highspeed railway tunnel in China. The supporting structure, subrail structure, and subsidiary structure of Tsinghuayuan Tunnel are all prefabricated in the factory. The strength, deformation and stability of subrail structure are analyzed by numerical simulation method; a kind of threeblock type of subrail prefabricated structure is put forward according to prefabricated assembling technology; and the subrail space is used to ventilate and rescue under the stability condition. The connection between subrail structure and shield segment is the key to fullyprefabricated assembling technology. By introducing the grouting technology and construction keys of subrail structure, the stress on subrail structure and shield segment can be balanced. The results can provide reference for similar projects in the future.
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