欢迎来到天天文库
浏览记录
ID:8330271
大小:404.44 KB
页数:7页
时间:2018-03-20
《某软土地区城市深基坑支护方案优选的模糊层次分析法研究论文》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中南大学学报(自然科学版)JournalofCentralSouthUniversity(ScienceandTechnology)第43卷第9期2012年9月Vol.43No.9Sep.2012软土地区城市深基坑支护方案优选的模糊层次分析法周罕1,2,曹平1(1.中南大学资源与安全工程学院,湖南长沙,;2.云南铜业(集团)有限公司,云南昆明,)摘要:提出软土地区城市深基坑支护方案优选的模糊层次分析法。在对影响软土地区城市深基坑支护方案的各因素进行分析和调查基础上,选取4个一级指标、14个二级指标构建综合评价指标体系;通过层次分析法建立层次关系,构造阶层结构,采用模糊理论建立
2、判断矩阵,确定权重向量;通过专家调查和理论分析等方式确定各因素得分,采用逻辑运算确定相对优属度矩阵,建立模糊综合评判模型,评判备选支护方案的优劣。利用该模型对上海陆家嘴地区某深基坑3个备选支护方案进行比选,得出备选方案的相对优属度分别为0.596,0.283和0.619,从而确定第三方案最优,为实际工程建设提供了决策依据。关键词:软土地区;城市深基坑;支护方案优选;层次分析法;模糊数学中图分类号:TU443文献标志码:A文章编号:1672−7207(2012)09−3582−07AfuzzyAHPapproachtoselectsupportingschemesforcity
3、foundationpitinsoftsoilZHOUHan1,2,CAOPing1(1.SchoolofResourcesandSafetyEngineering,CentralSouthUniversity,Changsha,China;2.YunnanCopperGroupCompanyLtd.,Kunming,China)Abstract:Toselecttherationalsupportingschemesofcityfoundationpitinsoftsoilregion,afuzzyanalytichierarchyprocess(AHP)methodfor
4、makingdecisionwasproposed.Basedontheanalysisandinvestigationonfactorsaffectingthesupportingschemesofcityfoundationpitinsoftsoilregion,4firstgradeindexesand14secondgradeindexeswereconductedtoestablishtheindexsystemforsynthesisevaluatingproject.TheAHPmethodwasusedtoconstructthehierarchyrelati
5、onshipwiththeinfluencefactorsandtosetuptheirhierarchystructures,andthentheweightofeveryinfluencefactorswascomputedbasedonthejudgematrixfuzzysetsmethod.Afterallgradeswereacquiredbymeansofgeologicalinvestigations,theoreticalanalysisandlaboratoryorfieldtests,thematrixofthemembershipcomparative
6、degreewascalculatedbyiterativelogicalarithmetic.Asyntheticassessmentmodelwasmadetoestimatethesupportingschemesoffoundationpit.TheresultsshowthatthecomparativesyntheticsuperiordegreesforthesupportingschemeofafoundationpitinShanghaiare0.596,0.283and0.619respectivelyaccordingtothismethod,andth
7、ethirdlocationbecomesthebest.Theresultsshowdistinctlythatthefuzzy-AHPmethodisvalidandfeasibletoselectthesupportingschemeforcityfoundationpitinsoftsoilregion.Keywords:softsoilregion;cityfoundationpit;selectionofsupportingschemes;analytichierarchyprocess(A
此文档下载收益归作者所有