E-Defense shaking test on large model of underground shaft and tunnels

摘要

To obtain useful knowledge on detailed behaviors of underground structures and soil-structurerninteraction, shaking table testing method with large structure models is one of the most powerful options. Thernadvantages of large-scale shaking table tests are; 1) large-scale models can minimize scale effects on soil andrnstructure behavior, 2) image analysis technology that has developed in the recent times is applicable becausernsignificant displacement or deformation are generated in large structure models, and 3) a large number of variousrnsensors can be placed where localized phenomenon are expected. In this paper, one of the world largest shakingrntables, E-Defense, National Research Institute for Earth Science and Disaster Prevention, Japan, is introduced.rnIn addition, the latest test series on interaction between soil and underground shaft and tunnels is described asrnan example of E-Defense tests.