弧形闸门三维有限元抗震分析
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摘要
运用CATIA软件对弧形闸门在正常挡水和地震效应下进行线弹性三维有限元分析,通过比较两种工况下弧形闸门的应力分布、变形和稳定性,得出了如下结论,与正常挡水工况相比,地震作用效应下弧形闸门的应力稍微增大,并且由下向上转移,而闸门的变形增加明显;在地震作用效应下,弧形闸门的稳定性明显下降,上支臂相对而言为闸门的薄弱环节。
Three-dimensional linear elastic FEM analysis of radial gate by using the CATIA software was carried out to compare the stress distribution,deformation and stability under the conditions of normal water retaining and seismic effect.The results showed that the stress of radial gate was slightly bigger and transferred fromdown to upper under the condition of seismic effect,comparing with the working condition of normal water retaining,but the deformation of gate increased markedly.Meanwhile,the stability of gate decreased obviously,and the upper arms were weak comparatively.
Three-dimensional linear elastic FEM analysis of radial gate by using the CATIA software was carried out to compare the stress distribution,deformation and stability under the conditions of normal water retaining and seismic effect.The results showed that the stress of radial gate was slightly bigger and transferred fromdown to upper under the condition of seismic effect,comparing with the working condition of normal water retaining,but the deformation of gate increased markedly.Meanwhile,the stability of gate decreased obviously,and the upper arms were weak comparatively.
引文
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[2]蔡元奇,李建清,朱以文,等.弧形钢闸门结构整体优化设计[J].武汉大学学报(工学版),2005,38(6):20-23.
[3]谢智雄,周建方.大跨度弧形闸门的自振特性研究[J].水利电力机械,2006,28(5):18-20,23.
[4]严根华,阎诗武.水工弧形闸门的水弹性耦合自振特性研究[J].水利学报,1990,(7):49-55.
[5]严根华,陈发展,赵建平.表孔弧形闸门流激振动原型观测研究[J].水力发电学报,2006,25(4):45-50.
[6]李火坤,练继建.水工弧形闸门流激振动特性物模-数模联合预测与安全分析[J].水力发电学报,2007,26(3):69-76.
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