膨胀土与石灰改良膨胀土胀缩性的云模型评价

发布时间：2018-10-13 12:52

【摘要】：为解决胀缩性评价过程中模糊指标与随机指标统一处理及定性定量转化问题,探讨了基于云模型理论的胀缩性评价模型.首先基于胀缩性分类标准生成每个评价指标在不同等级的云数字特征,并应用正向正态云发生器模拟实测样本指标值隶属于各等级的确定度,然后结合指标权重获得综合确定度,以最大综合确定度值判定样本的胀缩性等级.最后基于合肥新桥国际机场膨胀土地基处理工程实例来验证该模型的可靠性,并与集对分析、可变模糊集方法和模糊数学方法的判别结果进行了对比分析.结果表明,基于云模型评价膨胀土和改良土胀缩性等级是有效可行的,且预测结果可充分反映现场实际情况.
[Abstract]:In order to solve the problem of unified treatment of fuzzy index and random index and qualitative and quantitative transformation in the process of expansion and shrinkage evaluation, the evaluation model of expansion and shrinkage based on cloud model theory is discussed. Firstly, the cloud digital features of each evaluation index in different grades are generated based on the expansion and shrinkage classification criteria, and the measured sample index values are simulated by the forward normal cloud generator, which belong to the degree of certainty of each grade. Then, combined with the index weight, the comprehensive certainty is obtained, and the expansion and shrinkage grade of the sample is determined by the maximum comprehensive certainty. Finally, the reliability of the model is verified based on the example of the expansive soil foundation treatment project of Xinqiao International Airport in Hefei. The results are compared with the discriminant results of set pair analysis, variable fuzzy set method and fuzzy mathematics method. The results show that it is effective and feasible to evaluate the swelling and shrinkage grade of expansive soil and improved soil based on cloud model, and the prediction results can fully reflect the actual situation in the field.
【作者单位】：合肥工业大学土木与水利工程学院;
【基金】：国家自然科学基金资助项目(41172274,71273081)
【分类号】：TU443

【相似文献】