The geological facts of the regional unconformity,the evolution of Mesozoic-Cenozoic fault and basin in the area show that there are five compression deformations in Mesozoic-Cenozoic period.

The Mesozoic faults,regional unconformities and basin evolution in the Yanshan area suggest that there occurred not only strong compression but also strong extension in the Yanshanian Stage.

Taking Chaobai River Bridge in Jingcheng Expressway as the engineering background, the article introduces the selection process of 3-phlon partial cable-stayed bridge structural system, and through the numerical analysis, compares the reactions of the different structural systems under the external action, and uses the measures using damper to reduce the earthquake effect of the structure.