ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2015, Vol. 35 ›› Issue (1): 22-27.DOI: 10.3973/j.issn.1672-741X.2015.01.004
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SUN Mingzhi, DAI Wenting, HAO Baizhou, WU Hao
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Abstract:
The ventilation passage of Jiefangdalu Station of Changchun Metro is constructed by 10pilotheading CRD method. In the paper, the construction of the ventilation passage is simulated by means of fluidstructure interaction, so as to control and predict the construction risks effectively. Conclusions drawn are as follows: 1) The proposed two pilot heading sequences are compared in terms of ground surface settlement, sidewall convergence, primary support stress and plasticized zone distribution, and rational pilot heading sequence is found accordingly; 2) Two of the simulation results, i.e., vertical displacement and horizontal convergence, are selected and analyzed, which shows that the removal of the bottom temporary support and the temporary invert are vulnerable construction steps. Countermeasures are proposed for these vulnerable construction steps according to the specific project conditions.
Key words: Changchun Metro, 10pilotheading CRD method, ventilation passage, fluidstructure interaction, numerical simulation, FLAC3D
CLC Number:
U 231
SUN Mingzhi, DAI Wenting, HAO Baizhou, WU Hao. Fluidstructure Interaction Analysis on Ventilation Passage of Metro Works Constructed by 10pilotheading CRD Method[J]. Tunnel Construction, 2015, 35(1): 22-27.
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