In view of the demand 800 meters Super Long Span CFST arch bridge, composite bridge flying swallow and self-anchored suspension cable is proposed. The thrust flying-bird tension are balanced, forming a self-balanced structure system. rib mainly stressed, supplemented by system, which works together has complementary advantages. Using single leaf hyperboloid variable section steel tube four limb...

Concrete-filled steel tubular columns have garnered wide interest among researchers due to their favorable structural characteristics. To attain the best possible performance from concrete-filled while reducing cost, use of optimization algorithms is indispensable. In this regard, metaheuristic are finding increasing application in engineering high efficiency. Various equations that predict ult...

This paper presents an effective reliability analysis procedure and proposes the system resistance factors for design of steel-concrete composite frames that comprise concrete-filled steel tubular (CFST) columns beams. Advanced is employed to predict ultimate using fibre beam-column elements in OpenSees. The obtained predictions load-carrying capacity compare well with experimental results mean...

To explore the difference in impact of transverse bracing on seismic effect through concrete-filled steel tube arch bridges with non-isolated and earthquake-isolated, nine earthquake-isolated structural models under different cross-bracing arrangements were established, Elcentro waves selected. The internal force, displacement, velocity, absolute acceleration, relative separation ribs each mode...

According to the geometric figure of three-leaf rose curve, this paper puts forward a flying-bird type cable-stayed arch bridge with curve shaped CFST rib, which has beautiful appearance and one leads three banks.The space cables are set between linear ribs resist negative bending moment, tie feet positive moment. On inclined pylon at tail bridge, stay-cables arranged balance thrust, suspension...