第34卷第4期 2017年7月
土木工程与管理学报 Journal of Civil Engineering and Management
Vol.34 No.4 July 2017
基于格序决策理论的软土深基坑支护方案评价
沈海云，朱雪欣
（青岛理工大学管理学院，山东青岛266520）
摘要：为解决软土深基坑评价系统中混合型评价指标权重不明确以及多目标之间存在的不可公度性和矛盾性导致难以对各备选方案进行科学评价的问题，本文采用PCA方法、组合赋权法和格序决策理论对软土深基坑支护方案进行评价。首先，运用PCA方法，简化软土地质深基坑方案评价体系；其次，运用OWA算子和信息嫡分别确定主客观权重，并结合博奔集结模型求得组合权重；最后，引人格序决策理论，结合加权Hausdorf（豪斯多夫)距离，依据各备选方案与正、负加权理想解之间的相对贴近度大小进行方案排序。工程实例分析表明：评价体系全面、合理，评价方法简单可行，提高了决策的可靠性，对类似软土深基坑支护方案的评价决策具有一定的借鉴意义。
关键词：软土深基坑；支护方案评价；OWA算子；信息嫡；格序理论；hausdorff距离
中图分类号：TU753
文献标识码：A
文章编号：2095-0985（2017)04-0132-06
Evaluation of Soft Soil Deep Foundation Pit Supporting Scheme
Based on Lattice Order Decision Theory
SHENHai-yun,ZHU Xue-xin
(School of Management, Qingdao Technological University, Qingdao 266520, China)
Abstract: In order to solve the problem that the mixed evaluation index weight is not clear and incommensurability and contradiction between multi-objective lead to the optimum selection of alternative is unscientific, in this paper, the PCA method, the combination weighting method and the lattice order decision theory are used to evaluate the supporting scheme of deep foundation pit of soft soil. Firstly ,using PCA method, the author simplified soft soil deep foundation pit project quality evaluation system. Secondly, this paper utilized OWA operator and information entropy to determine the subjective and objective weights, and used the game theory to gain the comprehensive weight. Finally, the author introduces the lattice order theory and combines the weighted hausdorff distance to determine the optimal order of the relative closeness degree between positive and negative weighted ideal solution. The engineering case analysis shows that the evaluation system is comprehensive and reasonable, and the evaluation method is simple and feasible, improving the reliability of evaluation decision. It has a certain reference value for the optimization of the similar soft soil deep foundation pit supportprogram.
Key words: soft soil foundation pit; support scheme evaluation; OWA operator; information entropy;
lattice order theory; hausdorff distance
随着城市的迅速发展，软土深基坑施工呈现出开挖面积大，分布密集的状况。针对软土深基
收稿日期：2016-06-18修回日期：2016-08-25
坑的特殊性及工程施工中存在的诸多问题，研究人员对其进行了积极探讨。郑刚等[1~4]对软土地
作者简介：沈海云（1988-），女，山东日照人，硕士研究生，研究方向为工程项目管理（Email：shenhaiyun@163.com）通讯作者：朱雪欣（1976-），女，山东青岛人，副教授，博士，研究方向为管理科学与应用（Email：zhuxuexin@126.com）基金项另芳据自然科学基金（ZR2014DM016）