Currently, most embedded
channels in shield tunnel sections are calibrated in a full-ring configuration, thereby ensuring construction stability and
convenience. However, this approach may result in excessive vacancies and
increased costs. Thus, to reduce the number of embedded channels in shield
tunnel segments and minimize project costs, the authors introduce building
information modeling (BIM) technology and propose an improved algorithm for a
shield tunnel segment layout based on channel optimization. Using BIM as a support platform, an optimization scheme is developed
based on the contact network ring and a single channel in the bottom track
area, tailored to the project′s actual characteristics.
First, considering the contact network layout pattern, the double-channel embedded ring at the top is optimized. Second, the single-ring layout is refined using the minimum fitting error method to
determine the optimal position.Third, the single-channel ring is optimized for the bottom track area by establishing
rules for segment layout and point selection. This further enhances the layout
algorithm. Finally, based on these algorithms, a prototype system is designed
to enable the three-dimensional automatic layout of the
shield tunnel within the designed interval line and generate an analytical
report. This method is applied to specific engineering cases where the output
results guide segment production and on-site layout.
The application results demonstrate that this method achieves a 14.59%
optimization rate for embedded channels in tunnel segments. Moreover, the BIM-based approach generates a three-dimensional visual model of the segments
and embedded channels, thereby
facilitating a visual review and verification mechanism for the optimization
scheme.
ZHAO Wenxiang
,
QU Bingyu
,
WANG Houlin
,
HUANG Liangliang
.
Application of Building Information Modeling Technology in Optimization of Embedded Channels in Shield Tunnel Segments
[J]. Tunnel Construction, 2025
, 45(2)
: 375
-381
.
DOI: 10.3973/j.issn.2096-4498.2025.02.013
