The effect of non-linearity of the bearings and pier columns, and of geometric non-linearity of the stay cables upon the aseismatic performance of the bridge structure is also considered in the study.

Bridge bearing is a weak constructional element, so its earthquake resistant ability should be strengthened.

In bridge engineering, in order to prevent to fall Liang's earthquake damage or to ensure the seismic safety of bridge's bearing, usually set the horizontal seismic measures to limit device.