12/4/2023 0 Comments Lead rubber bearing isolator![]() ![]() Figure 5 shows a cross-sectional view of a laminated rubber bearing. The seismic isolation method has become possible through the development of laminated rubber bearings. Seismic isolation can reduce the shaking of the building dramatically. Isolation devices are installed under the building, and decouple the structure from the earthquake motions. ![]() We cannot prevent natural disasters, but we can design and build a ‘Resilient Society’ using technologies. This is the ideal performance of a ‘Resilient Society’. However, once the attack is over, the ball can return to its former shape immediately. The hand can grasp the ball firmly and crush it. Sometimes the natural environment attacks the society as a natural disaster. Suppose that the ball is our society, and the hand is the natural environment that surrounds the society. In order to reduce the damage caused by a natural disaster and keep our business and life, we must create a ‘Resilient Society’, as shown in Fig. BCP is a plan to continue business operations if the society is struck by disaster. So, if any supply chain is broken and the distribution stops functioning, our economy or business will suffer a great loss. Information, logistics and currency go round the earth twenty-four-seven. The modern society is connected and mutually dependent domestically and internationally. Recently, ‘Business Continuity Plan’ (BCP) has become a buzzword in the field of disaster prevention. The effects of seismic isolation and response control methods were verified through shaking table tests, structural health monitoring and earthquake response analyses. The manuscript explains three foremost response control dampers: the steel hysteretic damper, the viscoelastic damper and the viscous fluid damper. Response control methods utilize various kinds of dampers that are installed into a building and absorb vibration energy. Seismic isolation is also used for the retrofit of historic buildings. Seismic isolation provides not only structural safety, but also safety and security for people and properties in the building. The manuscript describes three types of laminated rubber bearings and three kinds of damping devices. Seismic isolation is a method of protecting a building from major earthquakes by installing isolators and energy absorbing devices under the superstructure. This manuscript reviews seismic isolation and response control methods of buildings, which are able to make buildings resilient against earthquakes and have become popular during the last three decades in Japan. ![]()
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