Abstract:

Due to the development and intervention of the measurement technology and computer technology, the design method for the tunnel structural system based on information feedback technology has achieved great progress. The socalled "information feedback based design" means design during which a large amount of information obtained during construction is used to provide guidance for the design and construction of the works, so as to achieve optimum tunnel structures. The determination of the displacement measurement criteria is one of the fundamental issues of the information feedback technology. On basis of the actual conditions of the subsea tunnel on Xiamen East Passage, the article makes study on the displacement judgement criteria of the tunnel so as to facilitate the site application.