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ID:35191582
大小:7.75 MB
页数:58页
时间:2019-03-21
《浅论高速公路改扩建新旧路基差异沉降可靠性分析》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、长安大学硕士学位论文高速公路改扩建新旧路基差异沉降可靠性分析姓名:刘金亮申请学位级别:硕士专业:岩土工程指导教师:折学森20100528摘要随着我国国民经济的快速发展,区域间交流日渐频繁,高速公路交通量迅速增长,但有相当一部分已建高速公路不能满足日益增长的交通量需求,严重影响了经济的快速发展。对此,越来越多的高速公路面临改建和扩建。高速公路的改扩建工程将是我国本世纪公路建设所面临的重要和急需解决的问题。本文针对高速公路改扩建工程中新老路基差异沉降问题,结合西安至潼关高速公路改扩建工程,通过现场勘测、室内试验等方法,对新老路基下地基土物理力学性质的变化规律进行了研究;采用Jc法对
2、高速公路改扩建工程新老路基差异沉降进行了可靠度计算,并对影响因素进行了分析。主要研究内容包括以下几个方面:(1)选取典型断面,通过地质勘察、室内土工试验,研究了新老路基下地基土物理力学性质的变化规律。(2)采用JC法对西潼高速公路改扩建工程新旧路基不均匀沉降进行了可靠性分析,建立新旧路基差异沉降的可靠度分析模型。(3)对西潼高速公路典型路段路基差异沉降进行了可靠度计算。关键词:高速公路,改扩建,路基差异沉降,可靠性分析AbstractWiththerapiddevelopmentofeconomyandtheregionalcommunicationisfrequentdaya
3、fterday,thetrafficvolumesofexpresswayarerapidlyincreasing.Aconsiderablenumberofexpresswaysinserviceare110longersatisfyingneedoftheincreasingtrafficvolumesofexpressway,whichseriousinfluenceeconomyfastdevelopment.Regardingthis,moreandmorehighwaysalependingtobereconstructedorwidened.Inourcountr
4、y,theexpresswaywideningisallimportantissuewhichstarvedforsolvinginhighwayconstructioninthiscentury.Inthispaper,aimedattheissuesofdifferentialsettlementofwidenroadbaseinthehighwayexpansion,unifiesXi’antotheTongguanhighwaywideningproject,thechanginglawofengineeringpropertiesofgroundunderoldand
5、newembankmentsareanalyzedbyusingsitesurvey,fieldtest,laboratorytestandSOon.UsedthemethodofJCtoanalyzethereliabilityofthedifferentialsettlementofXi’antotheTongguanhighwaywideningproject,andhascarriedontheanalysistotheinfluencingfactor.Mainresearchcontentincludingthefollowingseveralaspects:(1)
6、Selectssometypicalsections,throughthegeologicalreconnaissance,soilmechanicsassay,researchedthechanginglawofengineeringpropertiesofgroundunderoldandnewembankments.(2)UsedthemethodofJCtocarryonthereliabilityanalysisofdifferentialsettlementintheXi-Tonghighwayreconstructionandextensionproject,es
7、tablishedthedifferentialsettlementreliabilityanatomicmodel.(3)HascarriedonreliabilitycomputationtotheXi-Tonghighwayreconstructionandextensionproject.Keywords:expressway;reconstruction;differentialsettlement;reliabilityanalysisⅡ论文独创性声明本人声明:本人所呈交的学位论
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