Work

Reliability Evaluation and Prediction of Deep Buried Tunnel Based on Similarity Theory and Model Test

Year: 2023

Type: article

Abstract: Deep buried tunnel has a complex stress environment and large stress level. At present, it is difficult to dynamic monitoring for such tunnels. In order to make the safety evaluation and prediction of tunnel closer to the engineering practice, this paper deduces the tunnel reliability evaluation algorithm. The time-varying reliability of deep tunnel excavation process is analyzed and predicted. Based on the similarity theory, the actual deep tunnel excavation is simulated by indoor model test, the stress and deformation are monitored. The results show that after the tunnel excavation, the reliability of the structure does not decrease gradually, but increases slowly first and then decreases sharply. With the increase of the buried depth of the tunnel, the structural reliability decreases gradually. When the buried depth reaches a certain depth, the structural reliability will decrease rapidly. The influence of different parameters on the structural reliability has different sensitivity. The sensitivity of friction angle is the highest, and the sensitivity of gravity is the lowest. The sensitivity has little effect with the change of tunnel excavation time and tunnel buried depth. The accuracy of this method is verified by the comparative analysis of model box tests.

Source: KSCE Journal of Civil Engineering

DOI: 10.1007/s12205-023-0386-4

Authors: Pengfei Wu, Zhichun Fang, Xue Wang, Guangyi Zhu

Institutions: Dalian University of Technology, State Key Laboratory of Coastal and Offshore Engineering, Shijiazhuang Tiedao University

Language: English

Topic: Geotechnical Engineering and Analysis

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $1,800