ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2006, Vol. 26 ›› Issue (6): 41-44.DOI: B
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JIAO Ceng-Xian, Cao-Zheng-Chi, LI Chi-Guo
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Abstract:
Due to the environmental constraints, the overlapping singletube mined tunnels of 3C contract section of phase 1 of Shenzhen Metro, i.e. the north portion of GuoLao section, go through underneath the high building of Baihuoguangchang. During the tunnel construction, active underpinning construction technology is adopted for the pile foundations under which the tunnels go through. Due to the 1800t maximum axial force of the pile foundations to be underpinned, there exist great construction difficulties and great risks. Proper construction schemes and engineering countermeasures are taken in order to ensure the safety of the building. The paper presents the construction technology for the underpinning of the pile foundations applied in the construction of the overlapping tunnels.
Key words: underpinning  , overlapping tunnel subsidence analysis  , countermeasure
CLC Number:
 
U455
JIAO Ceng-Xian, Cao-Zheng-Chi, LI Chi-Guo. Construction Technology for Active Underpinning of Pile Foundations with Huge Axial Forces Applied in Construction of Overlapping Tunnels[J]. Tunnel Construction, 2006, 26(6): 41-44.
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