The data structure of measurements from automatic health monitoring and traditional manual inspection of shield tunnels are quite different

meaning a discrepancy exists in their evaluation models for shield tunnel health state.In this paper

a kind of specific fuzzy analytic hierarchy process comprehensive evaluation models was proposed in light of the typical sensor arrangement configuration of shield tunnel health monitoring.A six-layered hierarchy index evaluation system was newly established

as well as the corresponding hierarchic fuzzy factor set

evaluation set

weight set and membership functions.Moreover

based on the Cask Principle

concise fuzzy comprehensive operators were constructed to evaluate the hierarchic health state of a single kind of monitoring factor

a segment

a ring and a whole tunnel ling.Taking the left line of Nanjing Yangtze River tunnel as an example

the proposed model was employed to hierarchically evaluate the health state of the tunnel in operation period.By analyzing the comprehensive evaluation values in each layer

the control factor of the tunnel health state

influenced mainly by the geological conditions and the segment layout

is identified to be on the water face at the bottom of the ring in the middle of the river.The proposed model is easy to be integrated and hopeful to the smart administration of the tunnel maintenance in operation.