特大跨渡槽结构风致振动计算和分析研究

Calculation,Analysis and Study on Wind Vibration of Extra Large Span Aqueduct Structure

针对黔中水利枢纽一期输配水工程渠系建筑物的大型渡槽结构,采用大跨拱式渡槽结构计算分析研究模型,对不同工况下结构受风荷载、水荷载出现的位移、应力变化进行分析,最后通过对分析结果的汇总,得出渡槽不会发生共振,且应力<结构极限,但需要对位移最大处和排架等重要部位进行加固处理,以减小风荷载对结构造成的不利影响的结论。

In the light of large-scale aqueduct structure of cannel system buildings in the first-phase of water conservancy and distribution project in middle Guizhou Province, the large-span arcuated aqueduct structure was adopted to calculate and analyze the model in this study,to analyze the structure displacement and stress changes affected by the wind load and water load in different engineering situations,finally,through summarizing the results analyzed,concluding that： resonance cannot occur in the aqueduct,and the stress was less than the structure limit,but,it was necessary to strengthen the place displaced most seriously and framed bent,so as to weaken the conclusion that wind load would cause adverse effect on structure.