1、Design theory and method of steel bridges and composite structure bridges

• Stability theory and design calculation method of steel bridges

• Fatigue fracture theory and anti-fatigue design method of steel bridges

• Optimal design of steel-concrete composite structure bridges with small and medium span

2、Full-life performance evaluation and long-life design methods of steel and composite bridges

• Mechanism of fatigue damage evolution and service performance deterioration of steel bridges

• Optimized design and application of high-performance weathering bridge steel in bridges

• Structural damage perception based on the properties of functional composite materials

3、Application of new-typed composite structure and high-performance materials in steel structure bridges

• Design and application of new structural systems

• Mechanical behavior and optimal design of new steel-concrete connectors

• Construction technology of prefabricated composite beams and steel-UHPC composite bridge decks

• Mechanical properties and design methods of high-performance steel

4、Load transmission characteristics of key nodes in complex steel-concrete structures

• Mechanical behavior and mechanism of the key structures in the anchorage zone of bridge towers

• Mechanical behavior and mechanism of the key structures in the anchorage zone of stiffening beams

• Mechanical behavior and mechanism of the joints in long-span hybrid beams

• Mechanical behavior and mechanism of the joint between the mixed tower and column

5、Performance improvement technology and fatigue crack maintenance strategy of steel structure bridges

• Fatigue stress monitoring and damage detection of long-span steel bridges

• Application of smart materials in the detection, repair and reinforcement of steel bridge fatigue cracks

• Theory and method of prestress-ed SMA-CFRP pasting and strengthening steel structures

• Theory and method of FRP pasted reinforcement of steel structures