The paper introduced the characteristics of rigid frame arch bridge,by upper and lower structure calculation,proposed its compound-simple calculation.

South Bridge in Chao Yang deseases were introduced in this paper,and were analysed by space finite element method,cracking reasons of large gusset of rigid frame arch bridge were analysed,the desease principle of micro-curved plate was specified.

Through the space finite element method, a whole bridge model is established, and it is used in analyzing the causes of defects arisen from Yijia River RC rigid frame arch bridge, and the effect of diaphragms on the cross rigidity of whole bridge can be found.

On the basis of the research and comparison of the bridge type alternatives,the steel box rigid-frame arch bridge with span arrangement(32+140+32) m is recommended for the main bridge of the Bridge in the design.

Detection and reinforcement of rigid-frame arch bridge;

FEA analysis of geometry nonlinear reinforced concrete rigid-frame arch bridge;

Damage diagnosis and simulation analysis of the rigid-frame arch bridge based on dynamic properties;

Mechanical behavior of rigid frame arch bridge strengthened by stayed cable;

Design of rigid frame arch bridge and truss arch bridge and analysis of characteristics of the weight-bearing;

Calculating the transverse distribution coefficient of rigid frame arch bridge by using the elastic supporting continuous beam method;

Research on the ultimate strength capacity of an arch steel frame using ANSYS;

Static and dynamic test of open spandrel rigid-framed arch bridge under vehicle loading;

The original rib arch is changed to a slab rib arch in the typical drawing for lightweight rigid-framed arch bridges,and reinforcements are properly added.