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...

In this paper, dynamic analyses and field measurements of a tied arch railway bridge is presented. Excessive vibrations of the hangers were obtained, caused by resonance during train passages. The resulting increase of the stress level and number of stress cycles were shown to decrease the fatigue service life significantly. The most critical section is a threaded turnbuckle connection of the h...

In order to control the tower deviation in cable hoisting process of long-span concrete-filled steel tubular arch bridge during construction monitoring, a practical method correction was studied and established. paper, based on studies about error formation mechanism lifting, relevant formulas rib elevation changes caused by change state were deduced. The traditional methods including increase ...

We consider an epidemic change-point detection in a large class of causal time series models, including among other processes, AR( ∞ ), ARCH( TARCH( ARMA-GARCH. A test statistic based on the Gaussian quasi-maximum likelihood estimator parameter is proposed. It shown that, under null hypothesis no change, converges to distribution obtained from difference two Brownian bridge and diverges infinit...

the ambient vibration measurement is a kind of output data-only dynamic testing where the traffics and winds are used as agents responsible for natural or environmental excitation. therefore an experimental modal analysis procedure for ambient vibration testing needs to base itself on output-only data. the modal analysis involving output-only measurements present a challenge that requires the u...

The goal of this study is to examine the historical masonry arch bridge’s static and dynamic behavior using far-field fault earthquakes. first step build a finite element model with ANSYS SAP2000. This done see if greatest possible displacements, primary stresses, elastic strains compare. From above, belt’s upper side appears be vital for damage. Furthermore, life cycle assessment also research...