多指标混凝土正交试验的分析方法研究

发布时间：2018-01-29 01:16

本文关键词： 正交试验多指标矩阵分析法陶粒混凝土　出处：《科技通报》2017年11期 　论文类型：期刊论文

【摘要】：混凝土正交试验中经常出现多指标分析的问题,为了合理分配指标权重,尽可能的缩小配合比的优选范围,以陶粒混凝土正交试验为例,全面分析阐述了目前常用的优选方法:综合平衡法、综合评分法、功效系数法。为合理确定各指标权重,引入矩阵分析法对混凝土多指标正交试验设计进行优化,建立了指标层、因素层和水平层的三层结构模型和三层矩阵,给出指标值权矩阵的求解过程,得出各因素和各水平对试验结果的影响权重。实例分析表明,综合平衡法和综合评分法受主观影响较大;功效系数法受主观影响较小,但适用于各指标重要程度大致相当的试验;矩阵分析法优选过程客观,适用于指标重要性不同的试验。在此基础上确定了符合试验要求的混凝土配合比。
[Abstract]:The problem of multi-index analysis often occurs in the orthogonal test of concrete. In order to reasonably distribute the index weight and reduce the optimal range of mix ratio as far as possible, the orthogonal test of ceramsite concrete is taken as an example. Comprehensive analysis of the current commonly used methods of optimal selection: comprehensive balance method, comprehensive scoring method, efficacy coefficient method. In order to determine the weight of each index reasonably. The method of matrix analysis is introduced to optimize the design of multi-index orthogonal test of concrete, and the three-layer structure model and three-layer matrix of index layer, factor layer and horizontal layer are established, and the solving process of index weight matrix is given. The influence weight of various factors and levels on the test results is obtained. The case analysis shows that the comprehensive balance method and the comprehensive scoring method are greatly affected by the subjective influence. The efficacy coefficient method is less affected by subjective influence, but it is suitable for the test where the importance of each index is about the same. The optimization process of matrix analysis method is objective and suitable for the tests with different importance of indexes. On the basis of this, the concrete mix ratio which meets the test requirements is determined.
【作者单位】：河南省高等学校深部矿井建设重点学科开放试验室;河南理工大学土木工程学院;
【基金】：河南省高等学校深部矿井建设重点学科开放实验室基金课题(2014KF-02) 中铁隧道集团有限公司科技创新计划项目(H14-233)
【分类号】：TU528
【正文快照】： 随着混凝土研究逐渐向绿色化和经济化发展,混凝土的配比日趋多样,利用正交试验来对混凝土配比进行初步筛选已经成为一种常用方法。且随着现代工程对混凝土的性能要求日益增多,在正交试验的优选过程中往往需要同时考虑多个指标,例如混凝土需同时满足强度、和易性和耐久性等,对

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