To study the stress and deformation characteristics of
the segments at the connecting gallery of shield tunnels under different
opening types of steel pipe, and select a safer and faster opening method, a
case study is conducted on #1 connecting gallery of Pazhou west stationXiancun
station in Guangzhou, China. The numerical simulation and field measurement
methods are carried out to study the rapid opening technology of steel pipe
sheet of shield tunnel. The results show the following: (1) The use of steel
pipe sheets at the connecting gallery of shield tunnel can reduce the
disturbance to the surrounding rock and the tunnel segments. (2) The opening
type with four steel pipe sheets is proposed to ensure the force of the
segments and avoid structural instability. The formed homocentric squares loadbearing structure retains a complete force system, which can
alleviate the stress concentration at the opening of the connection gallery.
(3) The connection gallery construction adopts the support method of four steel
sheets and concrete pipe support, and temporary support can guarantee the
bearing capacity of the structure.
WANG Jun, LI Haifeng, LI Kejin, LIANG Erbin, WU Shengzhi
. Rapid Opening Technology of Steel Pipe Sheet for Connecting
Gallery of Shield Tunnel[J]. Tunnel Construction, 2021
, 41(S2)
: 551
-557
.
DOI: 10.3973/j.issn.2096-4498.2021.S2.070
