周邊縫對U形河谷拱壩應(yīng)力位移的影響
發(fā)布時間：2019-03-07 21:35
【摘要】：針對寬底的U形河谷拱壩壩踵常出現(xiàn)過大拉應(yīng)力的問題,以某U形河谷拱壩為例,利用ANSYS三維有限元分析軟件,通過設(shè)立5組不同的計算組合,分析研究了材料非線性、設(shè)置不同范圍的周邊縫對拱壩位移場、應(yīng)力場及壩體可能存在開裂區(qū)的影響。結(jié)果表明,設(shè)縫后拱冠梁表現(xiàn)出順河向的平移和倒向上游的轉(zhuǎn)動兩種剛體位移趨勢,拱冠梁截面上游面的梁向拉應(yīng)力減小甚至出現(xiàn)壓應(yīng)力,下游壓應(yīng)力也有所減小,周邊縫設(shè)縫范圍的改變對拱壩的應(yīng)力及壩體可能存在的開裂狀況影響不大。
[Abstract]:In order to solve the problem of excessive tensile stress in the heel of U-shaped arch dam with wide bottom, taking a U-shaped arch dam as an example, the material non-linearity is analyzed and studied by setting up five groups of different calculation combinations by using ANSYS three-dimensional finite element analysis software, and using the software of three-dimensional finite element analysis of U-shaped valley arch dam. The influence of different range of peripheral joints on the displacement field, stress field and dam body of arch dam may be affected by the crack zone. The results show that there are two kinds of rigid body displacement trends in the arch crown beam, which are river-oriented translation and reverse-upstream rotation. The beam tensile stress on the moving surface of the arch crown beam section decreases and even appears compressive stress, and the downstream compressive stress also decreases to a certain extent. The change of the range of the surrounding joints has little effect on the stress of arch dam and the possible cracking of the dam body.
【作者單位】： 武漢大學(xué)水資源與水電工程科學(xué)國家重點(diǎn)實(shí)驗室;河南省水利勘測設(shè)計研究有限公司;
【分類號】：TV642.4
本文編號：2436472
[Abstract]:In order to solve the problem of excessive tensile stress in the heel of U-shaped arch dam with wide bottom, taking a U-shaped arch dam as an example, the material non-linearity is analyzed and studied by setting up five groups of different calculation combinations by using ANSYS three-dimensional finite element analysis software, and using the software of three-dimensional finite element analysis of U-shaped valley arch dam. The influence of different range of peripheral joints on the displacement field, stress field and dam body of arch dam may be affected by the crack zone. The results show that there are two kinds of rigid body displacement trends in the arch crown beam, which are river-oriented translation and reverse-upstream rotation. The beam tensile stress on the moving surface of the arch crown beam section decreases and even appears compressive stress, and the downstream compressive stress also decreases to a certain extent. The change of the range of the surrounding joints has little effect on the stress of arch dam and the possible cracking of the dam body.
【作者單位】： 武漢大學(xué)水資源與水電工程科學(xué)國家重點(diǎn)實(shí)驗室;河南省水利勘測設(shè)計研究有限公司;
【分類號】：TV642.4
【相似文獻(xiàn)】
相關(guān)期刊論文 前6條
1 侯艷麗,張沖,張楚漢,金峰;拱壩沿建基面上滑潰決的可變形離散元仿真[J];巖土工程學(xué)報;2005年06期
2 楊令強(qiáng);馬靜;舒慶璉;;利用定位凝聚單元確定拱壩裂縫位置的研究[J];四川大學(xué)學(xué)報(工程科學(xué)版);2011年01期
3 陳祖坪，，陳式慧;周邊縫拱壩的應(yīng)力分析[J];水利學(xué)報;1996年01期
4 張士辰;落全富;彭雪輝;周克發(fā);;白云江水庫拱壩周邊縫失效前、后壩體應(yīng)力對比分析[J];大壩與安全;2007年05期
5 陳宗梁;國外水電技術(shù)的發(fā)展[J];中國工程科學(xué);2002年04期
6 ;[J];;年期
相關(guān)會議論文 前1條
1 金峰;張沖;王進(jìn)廷;張楚漢;;利用模態(tài)變形體離散元研究梅花拱壩破壞機(jī)理[A];首屆全國水工抗震防災(zāi)學(xué)術(shù)會議論文集[C];2006年
本文編號：2436472
本文鏈接：http://sikaile.net/kejilunwen/shuiwenshuili/2436472.html
最近更新
教材專著
