Evaluating the structural performance of the existing structures is important to confirm the structural soundness after natural disaster or validity of the seismic retrof [...]

The focus of this paper is the unexpected fluctuation found in the seismic response due to a slight difference in the settings of structural parameters. Over the past few [...]

Many active foldings are found and it is known that the subsurface structure is complex in the Niigata-ken Chuetsu area, Japan, where two destructive earthquakes were occ [...]

Recently, the number of monitoring reports of seismically isolated building is gradually increasing. In this paper, a long-term dense monitoring system of seismically iso [...]

To estimate the three-dimensional ground structure over a large area, the combination of gravity and microtremor surveys are useful and can provide good information witho [...]

An effective seismic retrofit for a sidewall of a cut and cover tunnel has not been established yet. We develop a new method of seismic retrofit for the cut and cover tun [...]