考虑指标不确定性的软基处理方案优选模型

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摘要研究目的：软土地基处理方案优选涉及到地质条件、施工条件、周围环境及工程经济等诸多具有模糊性和不确定性的因素,通过研究构建一种能够考虑指标模糊性和不确定性的多属性软土地基方案优选模型,以使决策结果更加符合工程实际。

研究结论：采用区间数表征评价指标的模糊性和不确定性,对用区间数表述的决策矩阵规范化处理后,将其分解为中点矩阵和半径矩阵,按照线性加权集成模型和误差传递公式计算备选方案的综合评价值区间数,最后,利用可能度公式即可进行备选方案的排序和优选。案例分析表明,该模型评价过程减少了评价系统的信息损失,增加了评价结果的可靠性,为软基处理方案优选提供了一种新的途径。

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	张士励
	张亦飞
	袁航新
	应跃龙

关键词 ：软基处理, 方案优选, 区间数, 误差分析, 可能度

Abstract：Research purposes：There are lots of fuzzy and uncertain factors involved in optimal selection of soft soil treatment scheme, such as geological conditions, construction conditions, environmental conditions and engineering cost. In order to get the most practical soft soil treatment scheme, it is necessary to establish a new model that can take fuzzy and uncertain factors into consideration for treating the soft soil.

Research conclusions：The Interval numbers attribute was used to evaluate the fuzziness and uncertainty of indexes. After standardizing decision-making matrix and separating it into mid-point matrix and radius matrix, linearly weighted aggregation and error transfer formula were employed to calculate the interval numbers of comprehensive evaluation value of all optional schemes. The possibility degree formula and ranking formula were used to rank and select optional schemes finally. The analysis of the case showed using this model could reduce the lost information for evaluation and improve the reliability of evaluation result. This model provides the other way for selection of soft soil treatment scheme.

Key words： soft soil treatment optimal selection interval numbers error analysis possibility degree

收稿日期: 2009-09-09

PACS:

TU42

作者简介: 张仕励, 1967出生,男,高级工程师。

引用本文:

张士励；张亦飞；袁航新；应跃龙. 考虑指标不确定性的软基处理方案优选模型[J]. 铁道工程学报, 2010, 27(3): 19-23.
ZHANG Shi-li；ZHANG Yi-fei；YUAN Hang-xin；YING Yue-long. Model for Optimal Selection of Soft Soil Treatment Schemes on Considering Uncertainty of Evaluating Indexes. 铁道工程学报, 2010, 27(3): 19-23.

链接本文:

http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y2010/V27/I3/19

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