To realize the
green and efficient construction of pedestrian passages in the underground
transportation network in the urban core area, the feasibility of standardizing
the construction technology of the existing underground pedestrian passages
with various crosssection forms and complex construction
technology is discussed. In this study, a case study is conducted on the large
crosssection mined Jing′an
Temple station of Shanghai metro line 14 constructed by rectangular pipe
jacking method in soft soils in China, and a fullsection
quasirectangular tunnel boring machine is developed on
the premise of determining the crosssection design of
the pedestrian passage on the station hall floor. The specific design of the
cutting, shell, rectifying relay, main jacking, driving, and screw excavating systems
of the quasi rectangular pipe jacking machine suitable
for tunnel excavation of this section is introduced in detail. The construction
technology suitable for this equipment is developed, and the main construction
control measures such as foundation reinforcement, water sealing of tunnel
door, construction parameter control, antifriction mud
of pipe joint, control construction technology, and soil improvement are
studied. The analytical results of insitu measured
deformation data show that the tunnel axis should be controlled within ±50 mm, and the surface settlement should be controlled within －15.49－5.03
mm, which meets the engineering requirements and
provides a standardized solution for the realization of fullsection mechanical excavation of pedestrian passages in urban rail
transit construction.
WANG Jinyi, QIU Yan
. Targeted Design and Construction Technology of QuasiRectangular
Pipe Jacking Machine for Standard CrossSection Pedestrian Passage in Metro Station: A Case Study of Jing′an Temple Station of
Shanghai Rail Transit Line 14[J]. Tunnel Construction, 2023
, 43(S2)
: 565
-577
.
DOI: 10.3973/j.issn.2096-4498.2023.S2.062
