Analysis and Study on Static and Dynamic Characteristics of Double-layer Steel Truss Girder Bridge
The main bridge of Qingpu Avenue is a double-layer steel truss continuous beam bridge.The span of the upper bridge is(67+86+67)m=220 m and the bridge width is 24.6 m.The lower bridge span is(61+86+61)m=202 m and he bridge width is 35.75 m.Taking this bridge as the research background,the overall design scheme of the bridge is introduced,and a finite element numerical model is established to analyze the static characteristics,natural vibration characteristics and pedestrian comfort.The results show that the structural stress of steel truss can meet the requirements of the code and the structure design is reasonable.The research and process and result can be used as reference for the similar bridges in other projects.
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