According to the site conditions and calculating results the urban part of Lanzhou city is divided into 3 regions, and the parameters of each region for aseismic design are also illustrated.

• 根据兰州市区的场地条件和大量的计算结果将市区划分为三个小区，给出了各小区的设计地震动参数，编制出设计地震动参数小区划图。