Haizhu Bay tunnel is a crucial component for
establishing a fast connection between the central urban area and the south
station hub in Guangzhou. The general design is challenging due to its complex
connection network, superlarge diameter, complex geological
conditions, and dense structures along the line. The significance of the tunnel
construction is elaborated, and the optimal plane line is explored taking into
account overall plan, farmland occupation, land acquisition and demolition as
well as environmental effects, and then the reasonable technical indicators are
proposed. Meanwhile, the mechanical disturbance evaluation indicators and
standards for sensitive structures along the line are formulated based on the
conditions and characteristics of tunnel construction, and the tunnel
construction methods are analyzed and selected. The crosssection schemes for the recommended shield method are compared and
selected, and mechanical response of existing structures induced by different
section schemes are evaluated by using numerical method. Clarifying the control
conditions, the design of plane and longitudinal sections for the recommended
scheme as well as the key technologies are analyzed. In view of the
construction characteristics of Haizhu Bay tunnel, a reasonable general design
scheme has been formed through a comprehensive analysis of multiple factors.
WEI Lixin, YANG Chunshan, LIU Liying, FU Dongliang
. General Design Scheme of Haizhu Bay RiverCrossing
Tunnel[J]. Tunnel Construction, 2023
, 43(S2)
: 359
-368
.
DOI: 10.3973/j.issn.2096-4498.2023.S2.040
