> 五种运行工况作用下的南水北调中线淇河倒虹吸箱型结构的变形如图2、3、4、5、6所示。箱型结构四个角点的水平位移和垂直位移见表1。计算可得倒虹吸箱型结构最大的水平位移为2.13 cm,最大的垂直位移为13.93营农场cm,最大不垂直位移为5.5 cm。其中水平位移值比2 cm稍大一些,由于按二维有限元计算值偏大,实际按三维计算位移值是小的,故一般工程上能够满足要求。工况ⅰ为最不利工况,其次为工况ⅱ和工况ⅴ,为虹吸箱型结构设计提供了有价值的参考数据。
参考文献:
[1]ansys入门手册(上、下)[m],北京:美国ansys公司北京办事处,1998.
[2]南水北调中线工程淇河倒虹结构计算研究报告[r], 1996.
[3]周飞平,李鹏辉,周鸿钧。大型箱型结构二维非线性有限元分析[j],郑州工业大学学报,1999, 20(1):29-32 。
simulation analysis of deformation for the reverse siphon
zhao xiao-xi1 ,zhou fEi-ping2 ,wang zong-min1 ,zhou hong-jun1
(1.school of hydraulic & environmental eng, zhengzhou university, zhengzhou 450002,china
2.college of water conservancy & hydropower eng,tsinghua university,bEIjing 100084,china)
abstract: the two dimensional finite element methods are used to analyze the large box-like structure of the reverse siphon of the middle route of south-to-north water transfer. there are two kinds of load combinations to affect on the box-like structure. their contributions and status have been considered. it is more efficient to use the fea model in ansys.
keywords: south-to-northwater transfer; fea; ansys;the box-like structure of the reverse siphon 上一页 [1] [2]
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