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堆石坝就地取材,节省大量水泥,适用于交通不便的地区。但是,至今为止还缺乏关于堆石坝沉降计算的方法和公式。本文分析了引起斜墙堆石坝沉降的主要因素是蓄水水压力,进而提出了近似的计算方法,并根据已有实测沉降资料,得出简化计算公式。目前,虽然可用有限单元法进行堆石坝的应力和位移的分析,但是有限单元法的计算基本假定与堆石坝的实际工作情况有较多出入,加以所选用的堆石坝物理力学指标难以符合实际,致使有限单元法算出的沉降值与实测值相差很火。本文建议的近似方法对设计工作具有一定的实用意义。
The local use of rockfill dam, saving a lot of cement, suitable for traffic inconvenient areas. However, so far there are still a lack of methods and formulas for settlement calculation of rockfill dam. This paper analyzes the main factor causing the settlement of inclined rockfill dam is the water pressure, and then put forward an approximate calculation method, and based on the existing measured settlement data, draw a simplified calculation formula. At present, although the finite element method can be used to analyze the stress and displacement of rockfill dam, the basic assumption of finite element method is different from the actual working conditions of rockfill dam. It is difficult to choose the physical and mechanical indexes of rockfill dam In line with the reality, resulting in finite element method of calculating the settlement value and the measured value is very different from fire. The approximate method proposed in this paper has some practical significance for the design work.