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《《南水北调与水利科技》：南水北调工程xx段pccp管线止推体系分析（王东黎）（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》：南水北调工程XX段PCCP管线止推体系分析（王东黎）（摘要） #TRS_AUTOADD_1220410737718{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}#TRS_AUTOADD_1220410737718P{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}#TRS_AUTOADD_1220410737718TD{MARGIN-TOP:0px
2、;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}#TRS_AUTOADD_1220410737718DIV{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}#TRS_AUTOADD_1220410737718LI{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋体}/**---JSON--{"":{"
3、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":"12pt","margin-top":"0","margin-bottom":"0"},"td":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"d
4、iv":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"li":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"}}--**/摘要：在南水北调中线工程XX段中采用了双排DN4000预应力钢筒混凝土压力管作为惠南庄泵站的压力出水管，由于工程线路地形复杂，管线段设置了许多水平弯头、竖向弯头。在这些地方，由于水流方
5、向发生改变会对管线产生不平衡推力，故需在管线上设置止推系统。为了达到工程设计合理、运行安全、管理方便，节省投资、节约地下空间资源，为今后发展留有余地，现针对PCCP管道的特点对该管线的止推体系进行优化比选，得出南水北调中线XX段PCCP管线止推系统可以采取镇墩、小转角管道锁定、可自由转动的小转角接头和限制性接头结合的做法。
关键词：PCCP；止推系统；南水北调
中图分类号：TV68；TV22文献标识码：A文章编号：1672-168301-0226-05
PCCPThrustAnalysisinBeijingSectionoftheSouth-to-NorthWaterDiversion
6、Project
WANGDong-li
(BeijingMunicipalInstituteofHydraulicEngineeringPlanningDesignandResearch,Beijing100044,China)
Abstract:A2-lineDN4000prestressedconcretecylinderpipe(PCCP)isadoptedinBeijingSectionoftheSouth-to-NorthWaterDiversionProjectasanoutletofHui-Nan-ZhuangPumpStation.Duetothetopographic
7、variation,manyverticalandhorizontalbendsareuesd.Attheselocations,thrustmustbeprovidedtobacktheforcebythechangeofwaterflowdirection.Inthisarticle,differentthrustmethodsforPCCParecompared.Acombinationof
