Electric Dampers To Achieve The Role Of Earthquake
Electric dampers are high-rise buildings to deal with earthquakes, seismic shocks by a device by hoisting in the upper part of the building body a few hundred tons of large iron ball through the transmission device through the spring, hydraulic device to absorb the vibration of the building body to achieve the purpose of earthquake The
In China, the first installation of electric dampers is Taipei 101 buildings, Taipei 101 building is placed in the 88-92 floor, a weight of 680 tons of steel balls, Electric Damper the use of swing to slow down the building.
Shanghai World Financial Center is also installed in the 90 layer also used to suppress the building due to strong winds caused by shaking the electric damper!
Once the building due to strong winds can be transmitted through the sensor to the electric dampers, this time the electric damper drive device will control the action of the weight and thus reduce the degree of rocking the building. Through the introduction of electric dampers, will be able to make strong winds on the building when the acceleration (gravity) reduced by about 40%. In addition, electric dampers can also reduce the impact of strong earthquakes on buildings, especially at the top of buildings.
Electric Damper Generally speaking, in the normal wind pressure state, from the ground height of 10 meters, such as wind speed of 5 m / s, then the height of 90 meters, the wind speed can reach 15 m / s. If up to 300-400 meters, the wind will be more powerful, that is, wind speed of 30 meters / sec or more, the skyscrapers will shake. Simply say that the general skyscrapers will be in the case of wind shaking, Electric Damper this device is to reduce the skate of the skyscrapers.
There are many ways to reduce the impact of wind on super high-rise buildings, such as by changing the shape of the building and interfering with the wind. The latest technological advances are the installation of a device called "electric dampers" in super high-rise buildings that can effectively reduce the shaking of high winds on high-rise buildings. The nature of the electric dampers is a damping system or energy dissipation device.
Features of electric dampers:
Speed, electric dampers according to the speed of change, the torque also changes. The change rule is: the speed increases, the torque also increases. The speed slows down and the torque decreases. Torque is different from standard torque at start-up.
Temperature characteristics, electric dampers according to the use of ambient temperature changes, the torque also changes. The change rule is: the ambient temperature increases when the torque decreases, Electric Damper the ambient temperature decreases when the torque increases. This is because the viscosity of the viscous oil in the damper also changes as the ambient temperature changes. However, when the ambient temperature returns to normal temperature, the torque will return to the original value.