Earthquake Early Warning System Structural Health

RAPID ANALYSIS

​SAVE TIME AND MONEY BY ASCERTAINING THE SAFETY OF A BUILDING RAPIDLY AFTER ​AN EARTHQUAKE
The cost effective Palert seismic sensor can be installed in strategic locations of a building or structure with the purpose of monitoring performance of key load bearing elements following an earthquake.
This is accomplished by a comparative analysis of the before and after resonant frequency profiles and rigidity to ascertain the possibility of structural damage. Even with only 3 units in a building, the system can provide accurate analysis of structural health.
Further structural modelling using Palert data will allow engineers to quickly establish a detailed picture of the impact that a seismic event might have had on a given building or structure.
SYSTEM IN ACTION
8 Levels using reinforced concrete
2 Underground stories
Height of 33.4 metres
MAXIMUM allowed displacement drift of building is 0.25% of height
METHOD
Using ONLY 3 Palerts - Top, Ground, Basement
Acceleration data from rooftop and ground
Plot of Acceleration against displacement
Slope gives stiffness number
Before and After quake - if more than 10% change in stiffness then building damaged