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《《南水北调与水利科技》:南水北调中线总干渠(河北段)混凝土衬砌防冻胀设计技术(严增才 李振卿)(摘要)》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、《南水北调与水利科技》:南水北调中线总干渠(河北段)混凝土衬砌防冻胀设计技术(严增才李振卿)(摘要)《南水北调与水利科技》:南水北调中线总干渠(河北段)混凝土衬砌防冻胀设计技术(严增才李振卿)(摘要) #TRS_AUTOADD_1218772099750{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}#TRS_AUTOADD_1218772099750P{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGI
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3、DD_1218772099750LI{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}/**---JSON--{"":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"p":{"line-height":"1.5","font-family":"宋体","font-size":"12p
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5、,"font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"}}--**/摘要:南水北调中线总干渠混凝土衬砌防冻胀技术研究,发现了适合于浅层季节冻土区的冻结冻胀规律,建立了以工程地点水文地质条件和邻近气象台站气温资料为计算依据的冻深、冻胀量计算经验公式及三种保温层厚度计算方法,依据不同渠道混凝土衬砌结构的防冻胀效果,提出以允许不均匀变位系数和允许法向位移量作为渠道衬砌抗冻胀稳定性的要求条件以及典型衬砌结构的允许不均匀变位系数。在汇总试验研究成果的基
6、础上,通过对中线工程总干渠沿线气候、水文地质、走向、环境等因素的综合分析,并结合已有的两个抗冻规范,提出适合于总干渠混凝土衬砌防冻胀设计技术。
关键词:南水北调;中线工程;总干渠;混凝土衬砌;防冻胀设计技术
中图分类号:TV68;TV31文献标识码:B文章编号:1672-168301-0176-06
DesignTechniquesforAnti-FreezingExpansionoftheConcreteLiningintheMainCanal(HeibeiSection)oftheSouth-to-NorthWaterD
7、iversionProject
YANZeng-cai,LIZhen-qing
(TheAdministrativeDivisionoftheWaterAffairsoftheDaqingRiverofHebeiProvince,Baoding071051,China)
Abstract:Byresearchonthefreezingexpansionproofoftheconcretelininginthemaincanal(Heibeisection)oftheSouth-to-NorthWaterDiversionPr
8、oject,someregulationsgoverningthefreezingexpansionratioforthesoilintheseasonalfreezingareashavebeenfoun