球墨铸铁管道壁厚与管道压力计算、管件、检查井、防水套管.docx

附录A管道壁厚与管道压力计算A.0.1压力分级管的壁厚计算应符合下列规定：a)管的最小壁厚(eG不应小于3mm,并应按下式计算：SFPFADE(A0l-l)"f"2RmSFPF式中：Cllin一管的最小壁厚(mm)；PFA一管的允许工作压力(MPa)；DE-管道外径(mm)；SF安全系数，取3；乩一球墨铸铁抗拉强度(MPa),取420MPa。b)管的公称壁厚(enol)应按下式计算：JW=J+(1.3+OQ01D(A.0.1-2)式中：管的公称壁厚(mm)；A.0.2壁厚分级管的壁厚计算应符合下列规定：a)公称壁厚(enon)不应小于6mm,并应按下式计算:efim=(05+O.OOlDAT)(A.0.2-1)式中：DN-管道公称直径(mm)；K一壁厚级别系数，取712中的整数。b)最小壁厚(dG应符合下列规定：1)公称壁厚(eno.)取6mm时,最小壁厚应为4.7mm；2)公称壁厚(enoB)大于6mm时，最小壁厚应按下式计算:=JT+0001DN)(A.0.2-2)c)管的允许工作压力(PFA)应按下列公式计算:2enunRkPFA=/一(A.0.2-3)DSF(A.0.2-4)wu=e1lw-(23+0.001D)(A.0.3)D=DE-em4n式中：D-管道平均直径(mm)0A.0.3管件的公称壁厚(&G应符合现行国家标准排水工程用球墨铸铁管、管件和附件GB/T26081及水及燃气用球墨铸铁管、管件和附件GB/T13295的有关规定，管件的最小壁厚(e.)应符合下列规定：a)公称壁厚(enon)取7mm时，最小壁厚应为4.7mm；b)公称壁厚(enon)大于7mm时，最小壁厚应按下式计算：A. 0.4管的最大允许工作压力(2附)应按下式计算:(A.0.4)PMA1.2PFA式中：PMA-管的最大允许工作压力(MPa)O附录B球墨铸铁管件B. 0.1球墨铸铁支墩和U型管卡主要结构和尺寸a)球墨铸铁支墩图B.0.17球墨铸铁支墩结构示意图表B0.17球墨铸铁支墩的尺寸DN1.(mm)B(mm)H(mm)R(mm)1.l(mm)Bl(mm)Sl(mm)S2(mm)Ml(mm)M2(mm)200400250200400116400150300125Ml2×80M12×150250450250200-400142455150350125M12×80M12×150300500250200-400168495150400125M12×80M12×150350550250200-400194600150450125M12×90M12×150400700250200-500219.5652150600125M12×90M12×150450750250200500245705150650125M12×90M12×150500830300200-500271798200710150M16×110M16×200600920300250-500322.5905200800150M16×120M16×2007001010300250-5003741008200890150M16×120M16×20080011003002505004261112200980175M16×130M16×2009001130350250-500477.51260200990175M20×140M20×2501000122035025060052913622001080240M20×140M20×250HOO1370350250-60058114702501250240M20×150M20×25012001460350250-600632.515702501360240M20×150M20×25014001670400300-60073617822501530240M24×150M24×250b)U型管卡主要结构和尺寸图B.0.1-2球墨铸铁支墩结构示意图表B.0.1-2球墨铸铁支墩的尺寸(mm)DNR(Inm)1.(mm)1.l(mm)H(mm)B(mm)M(mm)20011840032010080M12*15025014445337312580M12*15030017050042514580M12*15035019660050017580M12*15040022265255220080M12*15045024870660522580M12*150500272798678250100M16*200600326905785300100M16*2007003781008888350100M16*2008004301112992400100M16*20090048212651120450100M20*250100053313621222500100M20*250120063715701440600120M20*250140074017821632700120M24*250B.0.2马鞍式修补器规格a)直通抢修器示意图及规格|面-A图B02T直通抢修器结构示意图表B027直通抢修器的尺寸（mm）DNDl(mm)D2(mm)D3(mm)D4(mm)D5(mm)1.短(mm)1.长(mm)2002282522542723053004503003323603643804264005504004354594654865204006005005385715755956345007006006416786786987516008008008508918879279908001000b）承口抢修器示意图及规格图B.0.2-2承口式抢修器结构示意图表B.0.2-2承口式抢修器尺寸规格表DNDl(mm)D2(mm)D3(mm)D4(mm)D5(mm)D6(mm)1.(mm)2002282522543082723403003003323603644163804464004004354594655104865504005005385715756345956745006006416786787406987806008008508918879739271033800B.O.3马鞍式管卡a）马鞍式管卡示意图及规格图E.0.3-2马鞍式管卡示意图（适用于DN4OO以上）表B.0.3T马鞍式管卡的尺寸规格(nun)适用管径（mm）1.(mm)H(nun)DN100*50114122/DN150*50165173/DN200*50216-224/DN300*50318-327/DN400*50420-430/DN100*80114-122250105DNl00*100114-123250105DNl50*80165-173250105DN150*100165174250105DN150*150165175310110DN200*80216224250105DN200*100216225250105DN200*150216226310HODN200*200216-227400115DN250*100268-275250105DN250*150268-275310110DN250*200268-275400115DN300*100318-327260105DN300*150318-327330noDN300*200318327400115DN400*100420430250105DN400*150420430310HODN400*20042043038015DN400*300420-430520120DN500*100523533260105DN500*150523533320IlODN500*200523533380115DN500*300523533520120DN500*400523533620120DN600*100626-636270105DN600*150626-636330IlODN600*200626-636390115DN600*300626-636520120DN600*400626-636620120DN700*100728-739270105DN700*150728-739340IlODN700*200728739400115DN700*300728739520120DN700*400728739620120DN800*100832843270105DN800*150832843340IlODN800*200832843400115DN800*300832-843520120DN800*400832-843620120DN900*100934-946270105DN900*150934-946340IlODN900*200934-94