To solve technical problems faced in the construction
of underground spaces in urban areas with large building density and limited
space, new excavation equipment, shaft excavation and sinking technology,
segment structure design, and waterproof technology are introduced, and an
assembled shaft construction technology based on the Herrenknecht vertical
sinking shaft machine(VSM) is proposed. The assembled VSM was first applied in the
sinking shaft parking project (phase Ⅰ) in the Jianye District of
Nanjing. The method is shown to be efficient with a smaller footprint. The
engineering practice shows that: (1) The mode of overexcavation combined with
selfweight sinking ensures a controllable sinking
process. (2) Bentonite mud plays a better role infriction reduction and wall
protection. (3) The whole ring is divided into six equal segments. Therefore,
all segments are the same for the shaft, which helps to significantly improve
the efficiency and quality of the construction. This method has promising
applications in underground parking garages, shield jacking shafts, metro
ventilation shafts, etc.
JIANG Hong
,
BAO Heli
,
LIN Yongmei
. Research and Application of Design and Construction
Technology of Assembled Shaft：a Case
Study of a Sinking Shaft Underground Parking Garage in Nanjing, China[J]. Tunnel Construction, 2022
, 42(3)
: 463
-470
.
DOI: 10.3973/j.issn.2096-4498.2022.03.015
