The opencut tunnel structure has many
problems such as single structure form (mostly rectangular structure), few
scheme studies, and insufficient innovation in crosssection
form. As a result, a case study is conducted on the Sirine tunnel in Serbia,
and two kinds of specialshaped crosssections out of China are selected to conduct comparison with
traditional folded plate arch and rectangular crosssection
in terms of mechanical characteristics and economy. The results reveal the
following: (1) The arch part of the "flat bottom + round arch" crosssection scheme has good stress characteristics and visual effect,
but the bottom plate has poor stress conditions and economic benefit. (2) The
combination crosssection scheme has the best economic
benefit and the force of each component is clear, but the waterproof effect and
integrity of the structure are poor. (3) The crosssection
of folded plate arch is similar to that of rectangular crosssection. Although the two have general mechanical characteristics
and economic benefit, they have the advantages of small foundation pit scale,
high utilization rate of space, good waterproof effect, and simple
construction. The specialshaped crosssections in case study can provide reference for the selection and
optimization of the crosssection form of opencut tunnel.
ZHAO Yan
,
CHEN Jia
,
ZHANG Zhigang
. Comparison of CrossSection Schemes for Sirine
Tunnel in Serbia[J]. Tunnel Construction, 2022
, 42(S2)
: 328
-333
.
DOI: 10.3973/j.issn.2096-4498.2022.S2.041
