Abstract
Based on Nanchang Hong-gu tunnel, which was the largest inland immersed tube tunnel besides it’s tremendous water level difference, large scale, complex geological conditions, different longitudinal gradients, and other characteristics, accompanied with structure analysis by finite element model, monitoring scheme of the real-time health monitoring program and tunnel health assessment system was analyzed, and the monitoring system was established, then emphasized on the monitoring methods of tube joints open and dislocation, tube uneven settlement, shear key pressure, health assessment indexes and method of index weight determining in health assessment system. This system can make tunnel displacements, internal forces and other health indicators be measured and transmitted automatic in real-time. Research result was applied to Nanchang Honggu tunnel health monitoring system and would be guidance for other tunnel projects as well.
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