The Seismic Mitigation Control System is an important aspect of earthquake engineering and plays a significant role in earthquake-prone areas. An earthquake can disrupt a building directly through the seismic motion of the ground or indirectly through landslides, the liquefaction of foundation soils, and tsunami waves.
A building may become unstable during an earthquake due to landslides, the liquefaction of the soil that forms the foundation, tsunami waves, and seismic movement in the ground. The best design options must consider the local enhancement of seismic motion originating from the bedrock. The same is true when specific structural settings, such as crest zones, steep slopes, valleys, or endorheic basins, may lead to the focalization of the seismic event. The calm and stabilized landslide places may be reactivated by massive earthquakes.
There are mainly three types of seismic mitigation control to reduce the action of earthquake forces on the main structural system.
1. Passive Seismic Control System: This method applies passive techniques and does not require additional energy sources. It uses earthquake input motion to activate seismic control. The major examples of passive seismic control systems are:
Energy Dissipation Devices
Base Isolation System
2. Active Seismic Control System: This technique involves applying forces to the building to balance out the forces being applied by the earthquake. Additional energy sources and computer-controlled actuators are needed for this system to function. This system is more complex as compared to passive seismic control systems.
3. Hybrid Seismic Control System: This seismic method is a combination of active and passive seismic systems. The advantages of this seismic control system are as follows:
Less power consumption
At ACIM, we offer effective solutions regarding seismic mitigation systems. If you have any queries or doubts, get in touch with our specialists today or by calling us in our Victorian office on 03 9543 4470.