摘要
基于模糊数学和可拓学的岩体质量评价,其关键环节就是权重的确定。目前,尽管权重的确定方法有很多,但不能很方便地服务于实际工程。引入可拓学等级特征值的概念,将权重计算问题转化为优化问题来解决是一个新的有意义的探索。将混沌优化算法和可拓评判方法结合起来,对样本数据进行反分析,从而获得权重。根据实际情况选择影响指标,建立评价标准,提取样本数据,应用程序CAExWeigh.exe对样本数据进行分析。结合实际工程地质情况分析计算结果,表明该方法计算结果是可靠的;同时还表明,从一定意义上来说,权重是因素影响程度统计意义上的均值,且只有当其指标值在一定范围内变化才有意义。
Based on fuzzy mathematics and extension theory of rock mass quality evaluation, the weight is the key to the identification. At present, despite there are many ways to determine the weights, it is not very convenient for the actual projects. By introducing the extension theory of hierarchy eigenvalue, the weight calculation will be solved by conversing it into the optimization problem; it is a new meaningful exploration. Combining chaos optimization algorithm and extension evaluation method, the sample data are back analyzed and the weight is obtained. Choosing influential index according to the actual situation, the evaluation criteria are established; sample data are extracted, and the data are analyzed by using CAExWeigh.exe. The calculation results are analyzed based on actual engineering geological conditions. It is shown that the method is reliable; meanwhile, the weight factor is the mean value of the impact on the statistical significance to some extent; it＇s meaningful only when its index value is in a certain range.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2009年第9期2686-2690,共5页
Rock and Soil Mechanics
基金
国家自然科学基金(No.40472136)
教育部归国人员启动基金(No.120413133)
吉林大学"985"计划资助项目(No.105213200500007)
吉林大学"985工程"研究生创新基金资助项目(20080240)
关键词
权重
混沌
混沌优化算法
可拓学
岩体质量
weight
chaos
chaos optimization algorithm
extension
rock mass quality
