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近两年多来,我们采用分级增量荷载和非线性的双曲线型的应力应变关系,用有限元法对一些土石坝其中包括粘土心墙、沥青混凝土心墙和混凝土防渗墙砂砾石坝的应力和位移做了一些计算工作。分级增量荷载,在施工填筑期可根据施工进度,把荷载进行分级,本级荷载增量是本级结束时的填筑高度和前级填筑高度之间的填土重量,在蓄水期,也可按不同时期的水库蓄水高程,按水压力的增量作为分级荷载增量。从电算所得成果进行分析,我们认为,此计算法可改善土石坝的设计状况。现将我们的看法分述如下:
In the past two years or so, we have adopted the hyperbolic stress-strain relationship between graded incremental load and non-linearity. Some finite element methods have been applied to some earth-rock dams, including clay core walls, asphalt concrete core walls and concrete cut- The stress and displacement have done some calculations. Grading incremental load, according to the construction progress in the construction of the construction load, grading, load increase at this level is the filling level at the end of the level and the previous filling height between the filling weight, in the impoundment Period, but also by different periods of reservoir impoundment elevation, according to the incremental water pressure as a grading load increment. Based on the analysis of the results of the calculation, we believe that this calculation method can improve the design of earth-rockfill dam. We will now be divided into the following observations: