基于水平缝影响的蓄水期面板应力变形研究

Based on the Effect of Horizontal Seam on the Stress-Deformation of the Faceplate in Storage Period

以青海省石头峡面板堆石坝为样本案例,基于有限元分析方法,设置多种面板水平缝数量和宽度的方案,比较和分析蓄水期面板的应力和挠度的影响及其分布规律。研究证实,设置更多的水平缝可以在一定程度上改善面板应力应变状态,尤其可以显著弱化水平缝周围压应力,挠度与拉应力同样出现降低迹象,但这种变化不显著;缝体数无差异条件下,局部面板压应力与面板水平缝宽度呈反相关关系,但增加水平缝宽度时基本上不会影响到面板挠度。

Shitouxia CFRD in Qinghai province is a study sample,this paper based on the finite element analysis method,set up a variety of faceplates,the number and width of the horizontal seam,comparison and analysis of the influence of the stress and deflection of the faceplate in storage period,research has proved that set up more horizontal seam can to a certain extent,improve the state of stress and strain of the faceplate,especially can significantly weaken compressive stress around horizontal seam,deflection and tensile stress also showed signs of lower,but the change was not significant;Under the condition of no difference in seam number,the local compressive stress is inversely related to the horizontal seam width of the faceplate,but increasing the width of the horizontal seam will not affect the deflection of the faceplate.