Seismic fortification intensity. In general, the basic earthquake intensity is taken as. Earthquake intensity refers to the degree of damage to buildings such as ground and houses caused by earthquakes. However, it needs to be determined according to the scale of the city where the building is located, the type and height of the building and the local seismic fortification zoning.

According to the authority stipulated by the state, the seismic intensity approved as regional seismic fortification is called seismic fortification intensity. In general, the basic seismic intensity of China Seismic Parameter Zoning Map can be used for seismic fortification intensity.

Seismic fortification:

Seismic fortification simply means that in the process of engineering construction, in order to achieve seismic effect, seismic design and seismic facilities are adopted for buildings. Anti-seismic measures refer to the contents of anti-seismic design other than earthquake action calculation and resistance calculation, including anti-seismic structural measures. The Code for Seismic Design of Buildings stipulates that buildings with seismic fortification intensity of 6 degrees or above must be fortified.

Seismic fortification requirements refer to the standards and technical indicators that must be met by construction projects to resist earthquake damage, which are formulated or approved by the competent administrative department for earthquake in the State Council.

It is determined on the basis of comprehensive consideration of earthquake environment, importance of construction project, allowable risk level, safety target to be achieved and national economic bearing capacity. It is mainly expressed by earthquake intensity or number of ground motions, and the standards and technical indicators for resisting earthquake damage that should be achieved in new construction, expansion and reconstruction projects.