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With the rapid development of the steel arch bridge technology and large span steel arch bridge construction , the wind-induced vibration problem has become increasingly prominent . The combination of finite element model of the wind tunnel tests and space - based research methods , wind-induced vibration expand the steel truss arch bridge system . Simulated fluctuating wind , the wind load of the main arch , calm wind analysis , time-domain buffeting analysis made ??a series of studies . A span of highway steel truss arch as an engineering example , the state and the construction of the bridge state wind-induced vibration analysis , the main contents and conclusions are : 1 , according to the natural pulsation characteristics of the wind , the use of harmonic synthesis (CAWS) Act , consider wind speed spectrum of bridge site at the fluctuating velocity field along the cross to Rib highly variable characteristics , simulation , and test the reliability of the fluctuating wind . 2 , the use of general-purpose finite element software ANSYS , using space finite element model of the beam structures , the vibration characteristics of the structure of the state and the construction of the bridge state , the fundamental frequency and modal . Obtained through the static segment model wind tunnel tests of the the deck main beam pneumatic parameters focus Rib segmented wind tunnel dynamometer test , in order to study the interference between the wind load distribution and truss arch truss , arch rib each segment static coefficient provides a basis for effective loading of the truss arch . 4 steel truss arch bridge under static wind in the state and the construction of the completed bridge state carried out a detailed analysis of response and time domain buffeting response , this bridge design wind speed wind-induced response characteristics , and provide a reference for such bridges . Through comparative analysis, research considering Rib wind load lift and torque arch bridge wind -induced vibration impact . Finally, summarizes the results of this research , and pointed out the direction of further research is needed .
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