DEFORMATION ANAYSIS AND FIELD OBSERVATION OF D-RUNWAY AT HANEDA AIRPORT DURING CONSTRUCTION AND 10 YEARS OF OPERATION

Abstract

 The D-runway at the Haneda airport has a hybrid structure consisting of land reclamation and pier sections. In addition to the settlement, the horizontal displacement of the reclamation needs to be evaluated to secure the stability of the steel pipe sheet-pile cellular seawall at the connection of the two sections. For such purpose, soil/water coupled FE analysis with elasto-viscoplastic model has been used throughout the design, construction and operation. During the construction, the FE analysis was compared to the field observation and the material parameters were updated to enhance the accuracy. Meanwhile, the construction plan was justified/modified based on the prediction of the FE analysis. This paper reports the results of the field measurement and the deformation analysis during the construction and the past 10 years of operation. The long-term prediction for the future operation is also described.