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瑞士老埃莫松坝的年变化特殊,水库基本充满时处于极端逆向位移部位。研究期间,用三维弹性有限元模型对建筑物进行了模拟。研究的第一阶段仅以简化的几何尺寸和混凝土坝体内部的温度现象为依据,并考虑坝址的气象条件和材料的物理特性。根据实际的温度分布情况,表明太阳幅射起重要作用。第二阶段的研究表明,大坝三维模型的温度位移计算与静水压力引起的位移无关。因此,第一阶段的研究,其优势是明显的。再做一些补充工作,最后即可重新建立大坝的年位移观测值,精度在lmm以下。
The year-to-date changes of the old Elmoson dam in Switzerland are extremely reversed when the reservoir is essentially full. During the study, the building was simulated using a three-dimensional elastic finite element model. The first phase of the study was based on simplified geometrical dimensions and the temperature inside the concrete dam, taking into account the meteorological conditions at the dam site and the physical properties of the material. According to the actual temperature distribution, indicating that solar radiation plays an important role. The second phase of the study shows that the calculation of the temperature displacement of the three-dimensional dam has nothing to do with the hydrostatic pressure-induced displacement. Therefore, the first phase of the study, its advantage is obvious. Do some additional work, and finally to re-establish the annual displacement of the dam observations, the accuracy of lmm below.