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    王 輝¹，  丁  敏²，  喻詩(shī)淇³
    （1 重慶高速公路集團(tuán)有限公司，重慶401121；2 重慶大學(xué)土木工程學(xué)院，重慶400045；3 重慶市中小企業(yè)發(fā)展指導(dǎo)局，重慶400020）

[摘要] 深基坑支護(hù)方案的遴選是一個(gè)復(fù)雜的系統(tǒng)工程，其中涉及到技術(shù)可靠性、造價(jià)、環(huán)境影響和工期等諸多指標(biāo)因素。采用傳統(tǒng)模糊層次分析法( FAHP)評(píng)價(jià)深基坑方案的過(guò)程中，主觀權(quán)重的確定存在一定的隨意性。為了克服這一缺陷，引用信息熵所反映指標(biāo)本身的效用值來(lái)修正主觀權(quán)重，建立了一種綜合評(píng)價(jià)體系。該體系系統(tǒng)地考慮了指標(biāo)的客觀因素和主觀因素，使權(quán)重的確定更加合理，最后通過(guò)實(shí)例驗(yàn)證了該評(píng)價(jià)體系的合理性和可靠性。
[關(guān)鍵詞] 深基坑；信息熵；FAHP法
中圖分類(lèi)號(hào)：TU753.1    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：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