Master: Earthquake Engineering and Solid Lead Core Essay example

Submitted By Jack-Tattershall
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Base Isolation

This concept relies on separating the substructure of a building from its superstructure. One such system involves floating a building above its foundation on lead-rubber bearings, which contain a solid lead core wrapped in alternating layers of rubber and steel. Steel plates attach the bearings to the building and its foundation and then, when an earthquake hits, allow the foundation to move without moving the structure above it. E.g. Utah State Capitol

Shock Absorbers

Shock absorbers slow down and reduce the magnitude of vibratory motions by turning the kinetic energy of your bouncing suspension into heat energy that can be dissipated through hydraulic fluid. In physics, this is known as damping, which is why some people refer to shock absorbers as dampers. Engineers generally place dampers at each level of a building, with one end attached to a column and the other end attached to a beam. Each damper consists of a piston head that moves inside a cylinder filled with silicone oil. When an earthquake strikes, the horizontal motion of the building causes the piston in each damper to push against the oil, transforming the quake's mechanical energy into heat. E.g. Parachute ride, Coney Island

Replaceable Fuses

In the world of electricity, a fuse provides protection by failing if the current in a circuit exceeds a certain level. This breaks the flow of electricity and prevents overheating and fires. After the incident, you simply replace the fuse and restore the system to normal. Still in
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