王 辉¹，  丁  敏²，  喻诗淇³
    （1 重庆高速公路集团有限公司，重庆401121；2 重庆大学土木工程学院，重庆400045；3 重庆市中小企业发展指导局，重庆400020）

[摘要] 深基坑支护方案的遴选是一个复杂的系统工程，其中涉及到技术可靠性、造价、环境影响和工期等诸多指标因素。采用传统模糊层次分析法( FAHP)评价深基坑方案的过程中，主观权重的确定存在一定的随意性。为了克服这一缺陷，引用信息熵所反映指标本身的效用值来修正主观权重，建立了一种综合评价体系。该体系系统地考虑了指标的客观因素和主观因素，使权重的确定更加合理，最后通过实例验证了该评价体系的合理性和可靠性。
[关键词] 深基坑；信息熵；FAHP法
中图分类号：TU753.1    文献标识码：A  文章编号：1002-848X(2011) S2-0426-04

Application of information entropy and FAHP evaluation model in optimization decision of bracing system for deep excavation
Wang Hui¹,  Ding Min², Yu Shiqi³
(1 Chongqing Expressway Group Co., Ltd., Chongqing 401121, China; 2 College of Civil Engineering, Chongqing University, Chongqing 400045, China; 3 Chongqing Administration for Development and Guidance of Small and Medium-Sized Enterprises, Chongqing 400020, China)

Abstract: The selection of bracing system fora deep excavation is a quite complex system engineering which relates to many target factors of reliability, construction cost, environmental impact and construction period etc. In order to avoid the casualness in determining subjective weight by traditional fuzzy analytic hierarchy process comprehensive evaluation, taking information entropy into consideration, the comprehensive evaluation model was established. This model is proved to be reasonable and effective by an engineering example.
Keywords: deep excavation; information entropy; fuzzy analytic luerarchy process