The acceleration of ground motion during an earthquake can be used as the basis for determining the intensity. When formulating seismic fortification standards based on intensity, the corresponding peak acceleration is often given according to the corresponding intensity.

Peak acceleration is the magnitude of the maximum seismic force on a building when an earthquake occurs. The greater the value, the greater the potential damage to the building. When the earthquake acceleration value is 2.5 ~ 8 cm/s 2, most people can feel that when it reaches 25 ~ 80 cm/s 2, the house shakes strongly.

Digital meaning

For example, China's new seismic intensity table (1980) stipulates that when the intensity is ⅶ, ⅷ and ⅹ, the corresponding average peak acceleration is 0. 125g, 0.25 g, 0.5 g and 1.0g respectively. The Japan Earthquake Intensity Table also includes the earthquake acceleration value corresponding to each intensity.

Design basic seismic acceleration value: the seismic acceleration design value exceeding probability 10% in the 50-year design reference period, including 7 degrees 0. 10g, 8 degrees 0.20g and 9 degrees 0.40g. ..

Refer to the above content: Baidu Encyclopedia-peak acceleration of earthquake