The newly urethane gel material is compounded to become the characteristic that a spring element in the material to minimize the effect against the structural rigidity. In this study, the urethane material has been developed to use as a damping element in the response control device. However, the quake-proof technique for the smaller scale structure such as a detached house, server rack and art and craft has not yet been in the development stage until now, and especially there is a problem in the damping element in the practical use stage because the downsizing of damping element is often difficult to be adapted to design specification such as a performance, a cost, a mechanism and so on for comparatively small structure. The aseismic construction, seismically isolated structure and response control structure have been applied to the several structures for upgrading of seismic safety, and then the design technique for large scale structure in the current situation is close to standard range in recent years. The seismic safety should be constantly considered for mechanical, architectural and civil structures in Japan where is one of severe quake-prone countries in the world. It is shown that, through the applications of these advanced technologies, the structural performance is effectively enhanced. This paper introduces engineering cases of energy dissipation technologies applied in the new and retrofit project. In the retrofitting of the damaged buildings, energy dissipation devices are more acceptable than before by decision-makers for its high performance. In the design of new buildings, new national codes were published with higher protection levels of earthquake ground motions in the quake-hit area and sustainable development concept was applied by using recycled materials of building waste to avoid further damages to environment in the area of strong earthquakes. Earthquake engineering experts devoted themselves to designing the new buildings and strengthening the damaged buildings. Based on those results, the second stage for the post-quake reconstruction started. At the first stage, immediately following the event, they spent day to day in the field surveying the damage to buildings and evaluating the performance of structures. The earthquake engineering specialists’ reaction to the earthquake can be divided into two stages. On a magnitude of MW 8.0 earthquake hit Wenchuan in China.
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