Shenzhen Metro Dayun Hub Station is a transfer hub
among Metro Lines 3, 14, 16, and Intercity Line 33. The underground
part shall be constructed first to ensure the operation of the metro, and then
the property part shall be constructed to form the landmark project of the
integration of the Grand Transport Hub Station and City. In the development of
underground space, there are some technical problems, such as the protection of
operating station and viaduct, the construction of largediameter pile foundation with super clearance, the excavation of
superdeep foundation pit in new station, the topdown construction of traffic core, and the transformation of large
steel structure on the roof of existing station. Therefore, technical measures
such as traffic dredging, electronic detonator blasting, grouting
reinforcement, field monitoring, topdown construction
method, section hoisting simulated by building information modeling technology,
and finite element simulation and checking calculation are adopted to ensure
the smooth construction of the underground engineering of Dayun hub and the
transformation of operational elevated station. The results show that the
maximum settlement of pier is only 4.33 mm after grouting reinforcement of
elevated station of Line 3; the topdown construction
method is adopted to control the structural deformation of the built station,
resulting in maximum surface settlement around the traffic core area of 28.19
mm and the maximum horizontal deformation of 22.19 mm.
GUO Haizhu, ZHANG Jian, SHI Xiaowei
. Crucial Construction Technologies for Shenzhen Metro
Dayun Hub Station[J]. Tunnel Construction, 2023
, 43(S1)
: 451
-456
.
DOI: 10.3973/j.issn.2096-4498.2023.S1.052
