Reliability Analysis of TBM Cutterhead Excavation Based on Belief Reliability

DOI

10.2991/978-94-6463-449-5_2How to use a DOI?

Keywords

TBM cutter reliability; belief reliability; cognitive uncertainty; margin equation

Abstract

Belief reliability is a reliability measurement method based on opportunity measures, which fully considers the impact of inherent uncertainty and cognitive uncertainty on reliability, and can analyze the reliability of TBM cutterheads. On the basis of the interaction mechanism between the surrounding rock and the cutterhead, the random interference term is introduced to express the cognitive uncertainty, and the parameter relationship equations between the cutterhead penetration and the cutterhead thrust, rock integrity coefficient and axial compressive strength of the rock mass are established, and the confidence reliability margin equation and metric equation are constructed. Combined with the actual case, the analysis results are compared with the reliability considering the uncertainty of the parameters alone, and the reliability advantage of considering the uncertainty is illustrated, and a method to improve the reliability of the tunneling system by increasing the thrust of the cutterhead is proposed.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xiaogang Zhang
AU  - Weihong Gu
PY  - 2024
DA  - 2024/06/30
TI  - Reliability Analysis of TBM Cutterhead Excavation Based on Belief Reliability
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 4
EP  - 17
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_2
DO  - 10.2991/978-94-6463-449-5_2
ID  - Zhang2024
ER  -