Structural Health Assessment of TBM Water Diversion Tunnels Based on the
AHP-Matter-Element Extension-Variable Weight Theoretical Model
(1. Yellow River Conservancy Technical Institute, Kaifeng 475004；2. School of Water Conservancy，North China University of Water Resources and Electric Power, Zhengzhou 450046; 3. Power China Beijing Engineering Corporation Limited, Beijing 100024)
Abstract：
To ensure the safe construction and operation of water diversion tunnels, a TBM water diversion tunnel
project was used as the research case. Utilizing field monitoring data, a comprehensive structural health evaluation method based on the Analytical Hierarchy Process (AHP)-Matter-Element Extension-Variable Weight Theory was proposed, considering structural response, durability, and external factors. The influence of AHP and the AHP-MatterElement Extension-Variable Weight Theory on the weights, nearness degrees of various evaluation indicators, and health grades was explored, identifying key indicators affecting the structural health of the water diversion tunnel.Research results show that the variable weights adjust dynamically with indicator values, enabling real-time and accurate tunnel health status evaluation. The computed grade characteristic values for the tunnel structure by the two methods are 1.589 and 1.695, respectively, corresponding to the basic safety status of grade B. Apart from concrete strength and grout properties, the variable weight values and grade characteristic values of other indicators increase with their respective values. Segment settlement, segment opening, segment misalignment, and segment cracking are identified as the most sensitive indicators of TBM water diversion tunnel health status. The proposed AHP-MatterElement Extension-Variable Weight Theory method can provide precise health status evaluation for water diversion
tunnel structures.
ZHANG Yina1 CHEN Lei2,
3 HOU Ge2 ZHI Baoping1 LIU He2
.Structural Health Assessment of TBM Water Diversion Tunnels Based on the
AHP-Matter-Element Extension-Variable Weight Theoretical Model[J] MODERN TUNNELLING TECHNOLOGY, 2024,V61(6): 240-250
2024, Vol. 61 