Optimization of supporting schemes for deep foundation pit based on fuzzy grey relation projection method

WEI Xin-jiang; YU Yin; ZHANG Shi-min

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Optimization of supporting schemes for deep foundation pit based on fuzzy grey relation projection method

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- Optimization of supporting schemes for deep foundation pit based on fuzzy grey relation projection method
- Vol. 32, Issue S1, (2011)
- 作者机构：
  
  1. 浙江大学岩土工程研究所,杭州,310058
  2. 浙江大学城市学院,杭州,310015
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU470
- Online First：16 May 2011，
  
  Published：2011
- 稿件说明：
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WEI Xin-jiang, YU Yin, ZHANG Shi-min. Optimization of supporting schemes for deep foundation pit based on fuzzy grey relation projection method[J]. 2011, 32(S1).
DOI：

WEI Xin-jiang, YU Yin, ZHANG Shi-min. Optimization of supporting schemes for deep foundation pit based on fuzzy grey relation projection method[J]. 2011, 32(S1). DOI：

摘要

针对深基坑支护方案决策影响因素的信息不完全性以及影响因素间与评价指标的灰色关联性，综合应用灰色系统理论、矢量投影原理和模糊数学理论，在灰色关联投影法的基础上，提出了深基坑支护方案优选的模糊灰关联投影法；采用组合赋权方法，使权重能更合理地诠释各指标因素的影响；提出了一种基于最优方案区分度的灵敏度分析方法。工程实例分析表明，采用该方法具有科学实用、操作简便、易于实现程序化、决策灵敏度高等特性，能够为方案的决策提供更为可靠的依据，具有一定的推广和实用价值

Abstract

According to the characteristics of the decision factors of supporting schemes for deep foundation pit

such as information incompleteness and their gray correlation

using gray system theory

vector projection synthetically and fuzzy mathematic theory

a fuzzy gray relation projection method for the optimization of supporting schemes is established based on the gray relation projection method. Combined weights are used to interpret the impact of various factors more reasonable. A method for sensitivity analysis which bases on the distinguishing degree of the optimal plan is presented. Then the model is proved scientifically and effective by an example and easy to realize programmed. The algorithm which has the high sensitivity level offers more reliable basis for decision-making. So it has some generalization and application value

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