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本文以一维有限元法,对不同基岩弹性模量条件下乌龙矶拱坝的应力进行了对比分析.结果表明:在实际所取计算弹性模量值范围内,河床、河岸基岩对拱坝应力将产生程度不同的影响,河床基岩对坝体拱冠梁向应力,河岸基岩对坝体拱向应力影响明显,而对另一方向的应力影响不甚明显.本文还简单说明了,在不同基岩条件下,温降荷载是乌龙矶拱坝产生拉应力的主要因素.
In this paper, the one-dimensional finite element method is used to analyze the stress of Wulongba arch dam with different modulus of bedrock. The results show that in the range of calculated elastic modulus, The stress of arch dam will produce different degrees of impact. The bedrock of riverbed has a significant effect on the arch beam crown stress of the dam, but the effect of bedrock on the arch stress of the dam is obvious, but the stress on the other direction is not obvious. And, under different bedrock conditions, the temperature drop load is the main factor that causes the tensile stress of the arch dam in Wulongji.