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《《南水北調(diào)與水利科技》：南水北調(diào)工程xx段pccp管線止推體系分析（王東黎）（摘要）》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在工程資料-天天文庫(kù)。
1、《南水北調(diào)與水利科技》：南水北調(diào)工程XX段PCCP管線止推體系分析（王東黎）（摘要） #TRS_AUTOADD_1220410737718{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋體}#TRS_AUTOADD_1220410737718P{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋體}#TRS_AUTOADD_1220410737718TD{MARGIN-TOP:0px
2、;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋體}#TRS_AUTOADD_1220410737718DIV{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋體}#TRS_AUTOADD_1220410737718LI{MARGIN-TOP:0px;FONT-SIZE:12pt;MARGIN-BOTTOM:0px;LINE-HEIGHT:1.5;FONT-FAMILY:宋體}/**---JSON--{"":{"
3、line-height":"1.5","font-family":"宋體","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"p":{"line-height":"1.5","font-family":"宋體","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"td":{"line-height":"1.5","font-family":"宋體","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"d
4、iv":{"line-height":"1.5","font-family":"宋體","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"li":{"line-height":"1.5","font-family":"宋體","font-size":"12pt","margin-top":"0","margin-bottom":"0"}}--**/摘要：在南水北調(diào)中線工程XX段中采用了雙排DN4000預(yù)應(yīng)力鋼筒混凝土壓力管作為惠南莊泵站的壓力出水管，由于工程線路地形復(fù)雜，管線段設(shè)置了許多水平彎頭、豎向彎頭。在這些地方，由于水流方
5、向發(fā)生改變會(huì)對(duì)管線產(chǎn)生不平衡推力，故需在管線上設(shè)置止推系統(tǒng)。為了達(dá)到工程設(shè)計(jì)合理、運(yùn)行安全、管理方便，節(jié)省投資、節(jié)約地下空間資源，為今后發(fā)展留有余地，現(xiàn)針對(duì)PCCP管道的特點(diǎn)對(duì)該管線的止推體系進(jìn)行優(yōu)化比選，得出南水北調(diào)中線XX段PCCP管線止推系統(tǒng)可以采取鎮(zhèn)墩、小轉(zhuǎn)角管道鎖定、可自由轉(zhuǎn)動(dòng)的小轉(zhuǎn)角接頭和限制性接頭結(jié)合的做法。
關(guān)鍵詞：PCCP；止推系統(tǒng)；南水北調(diào)
中圖分類號(hào)：TV68；TV22文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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
