To provide a reference seismic analysis method for special bridges,a 72.5+62.5m unequal span single tower cable-stayed bridge was taken as the study background.The three-dimensional finite element model of the bridge was established,and its earthquake resistance performance was analyzed, based on dynamic characteristics of the structure system,with multi-dimensional seismic response spectrum under different seismic grade.The elasto-plastic analysis method of section moment-curva-ture curve based on fiber model was used.The results show that,the integrated seismic performance of the single tower cable-stayed bridge structure under earthquake action E1 and E2 is good.
single tower cable-stayed bridgedynamic characteristicsseismic response spectrumfi-ber modelelasto-plastic analysis method
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NSTL
维普
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