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以实际工程为依托,提出两种实用的矿料组成设计方法。方法1为正规方程法广义逆求解与Excel电子表格试配法相结合;方法2引入模糊数学隶属度函数将线性规划转化为非线性二次规划。两种方法通过计算机实现原材料掺配质量比例系数求解,解决沥青混合料矿料组成设计时,采用电子表格试配法耗时耗力、工作量大的问题;采用正规方程法出现原材料掺配质量比例系数之和大于1、出现负数解及合成矿料级配超出设计级配范围的问题。通过工程实例计算,验证两种方法的可行性和实用性,对沥青混合料配合比设计具有重要的指导意义。
Based on the actual project, two practical design methods of mineral composition are proposed. Method 1 combines the generalized inverse method of the normal equation method with the Excel spreadsheet fitting method. Method 2 introduces the fuzzy mathematics membership function to transform linear programming into nonlinear quadratic programming. The two methods are solved by the computer to get the proportion coefficient of the raw material blending quality. When solving the composition design of the asphalt mixture, the problem of time-consuming and labor-intensive test with the spreadsheet method is large. The normal equation method appears the quality of raw material blending The sum of the scale factors is greater than 1, resulting in negative numerical solution and the problem that the gradation of synthetic minerals exceeds the scope of design gradation. Through the engineering example calculation, the feasibility and practicability of the two methods are verified, which has an important guiding significance for the mix design of asphalt mixture.