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Paper first reviewed the history of short tower cable-stayed bridge at home and abroad situation and development trend, briefly introduces the structure of the bridge system, the structure characteristics and mechanical behavior. Papers to guangzhou shawan bridge east sand to a new league highway design scheme as the background, using large-scale finite element software MIDAS/CIVIL 2006, main girder is established based on the finite element model of whole bridge space combination plate unit. Paper, respectively, to calculate the operating stage of load effect, by considering the state into a bridge dead load and live load, temperature changes, temperature difference, wind load and other load beam, combination, calculated the disadvantageous combination load condition of bridge structure effect; Calculate the natural vibration characteristic of the bridge, using the response spectrum method, calculate ele vated to, cross the bridge and the vertical seismic response, and the combination of the above three directions earthquake maximum total response; Paper also in the maximum double cantilever stage of the bridge construction load, wind load of elastic stability, and in different operation stages under the action of live load analysis of the elastic stability are calculated. As a result, the author more comprehensive understanding of short tower cable-stayed bridge, the static, dynamic and stable performance, and mastered the use of large finite element software to compute long-span bridge method.
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