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当应力和变形之间为线性关系时,可根据模拟试验分析混凝土的蠕变规律,从而对某一规定的时间可用当时已知的应力求得变形值。在这种情况下,蠕变的总模拟试验可视为无穷参数的不连续模拟试验的总和,而蠕变用积分方程表示。根据蠕变随时间减缓分析了流变学模拟试验。本文将试验结果与经验数据作了比较,得出了表示蠕变非线性规律的微分方程及对某些边界条件的解答方法。指出,精确计算材料流变学性能所得的结果比较可靠。
When the relationship between stress and deformation is linear, the creep law of the concrete can be analyzed according to a simulation test, so that the deformation value can be obtained from a known stress at a given time. In this case, the total simulation of the creep can be regarded as the sum of the indefinite parameters of the discontinuous simulation test, while the creep is represented by the integral equation. The rheological simulation test was analyzed based on the creep reduction over time. In this paper, the experimental results are compared with the empirical data, and the differential equations representing the non-linear creep law and the solution to certain boundary conditions are obtained. It is pointed out that the results obtained by accurately calculating the rheological properties of materials are more reliable.