Arup负责设计的CCTV央视总部大楼，其三阶段抗震设计（部分）数据符合国家抗震规范
- no structural damage when subjected to a level 1 earthquake with an average return period of 50 years (63% probability of exceedance in 50 years)
- repairable structural damage when subjected to a level 2 earthquake with an average return period of 475 years (10% probability of exceedance in 50 years)
- severe structural damage permitted but collapse prevented when subjected to a level 3 earthquake with an average return period of 2500 years (2% probability of exceedance in 50 years) .For the CCTV development site, the peak horizontal ground acceleration values associated with the three levels of design earthquake are 7%, 20% and 40% of gravity respectively.
对应《建筑抗震设计规范》GB50011-2001中关于：
- 多遇地震烈度 intensity of frequently occurred earthquake：在50年期限内，一般场地条件下，可能遭遇的超越概率为63％的地震烈度值，相当于50年一遇的地震烈度值。
- 基本烈度 basic intensity：在50年期限内，一般场地条件下，可能遭遇的超越概率为10%的地震烈度值，相当于474年一遇的烈度值。
- 罕遇地震烈度 intensity of seldomly occurred earthquake：在50年期限内，一般场地条件下，可能遭遇的超越概率为2%~3%的地震烈度值，相当于1600~2500年一遇的地震烈度值。
设计基本地震加速度 design basic acceleration of ground motion：50年设计基准期超越概率10%的地震加速度的设计取值。北京8度区，设计基本地震加速度值0.20g。前两个阶段的弹性抗震设计采用SAP2000线性数值计算；塑性、损伤破坏计算采用非线性计算程序LS-DYNA。
Reference：
[1] Metal guru: Arup’s Chris Caroll on CCTV Headquarters, Beijing .
[2] China Central Television (CCTV) Headquarters, China .
[3] CCTV Headquarters, Beijing, China [PDF].