GB 50011-2010 Code for Seismic Design of Buildings
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1.0.1 This code is equationted with a view to implementing the relevant laws and regulations on
construction engineering and protecting against and mitigating earthquake disasters, carrying out
the policy of "prevention first", as well as alleviating the seismic damage of buildings, avoiding
casualties and reducing economic loss through seismic precautionary of buildings.
The basie seismic precautionary objectives of buildings which designed and constructed in
accordance with this code, are as follows:
1) under the frequent carthquakeground motion with an intensity being less than the local
Seismic Precautionary Intensity, the buildings with major structure undamaged or
requiring no repair may continue to serve;
2) under the earthquake ground motion with an intensity being equivalent to the local
Seismic Precautionary Intensity, the buildings with possible damage may continue to
serve with common repair; or
3) under the rare earthquakeground motion with an intensity being larger than the local
Seismic Precautionary Intensity, the buildings shall not collapse or shall be free from
such severe damage that may endanger human lives.
If the buildings with special requirements in functions or other aspects are carried out with the
seismic performance-based design, more concrete and higher seismic precautionary objectives shall
he established