In Japan, many buildings and structures suffered damages during the 2011 Tohoku Earthquake that occurred off the Pacific Coast. Since then, structural health monitoring ( [...]

Structural health monitoring systems of buildings are being developed, in order to evaluate the structural safety and function recover of buildings shortly after an earth [...]

Hazard maps in tsunamis and floods are created by many local towns and cities which has coast or river. However, they are not properly utilized by the citizens. One of th [...]

When the liquefaction of the ground occurs, the settlement is often caused due to the shear deformation during the earthquake and the consolidation after the earthquake. [...]

A pile top seismic isolation system is used for constructing base-isolated buildings. In this system, seismic isolators are set on the pile’s top directly, and piles ar [...]

In Hokkaido and around that, many earthquakes occurred. Just within the past 15 years, a number of earthquakes with a Magnitude of 7 or higher have occurred, such as the [...]

This paper reports an attempt to infer some vibration characteristics (especially, predominant frequency) of base isolated buildings using microtremor measurements. A com [...]

Considering the geotectonic environment and the historical importance, it is necessary to investigate the dynamic characteristics of the historical constructions in the c [...]

The design earthquake motions are often defined by the response spectra. For example, in the seismic design standard for the Japanese Railway facilities (1999) there are [...]

The early warning information is requires not to cause the social confusion and mislead especially for the public people and the important facilities but in these days so [...]