Faa'iidooyinka Tuubooyinka Birta ah ee A252 ee Heerka 3aad ee loo Isticmaalo Dhismaha Tuubooyinka Bulaacadda iyo Batroolka

Sharaxaad Gaaban:

Tuubo bir ah oo A252 Fasalka 3aad ah, oo sidoo kale loo yaqaantuubo qaanso oo mug leh oo hoostooda ku wareegsan, waa doorasho caan ah oo loogu talagalay dhismaha dhuumaha wasakhda iyo saliidda. Tuubooyinkan waxaa loogu talagalay inay u adkeystaan xaaladaha daran waxayna bixiyaan faa'iidooyin badan oo ku jira codsiyadan.

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Mid ka mid ah faa'iidooyinka ugu muhiimsan ee dhogortaTuubo bir ah oo A252 Fasalka 3aad ah waa xooggeeda iyo cimri dhererkeeda gaarka ah. Tuubooyinkan waxaa laga sameeyay bir tayo sare leh waxayna aad u adkaystaan daxalka, duugista iyo saameynta. Tani waxay ka dhigaysaa kuwo ku habboon in loo isticmaalo tuubooyinka wasakhda halkaas oo laga yaabo inay la kulmaan walxo daxal leh iyo culaysyo culus. Intaa waxaa dheer, xooggooda iyo cimri dhererkoodu waxay ka dhigayaan kuwo ku habboon in loo isticmaalo dhismaha dhuumaha saliidda, maadaama ay u adkeysan karaan cadaadis sare iyo xaaladaha deegaanka ee isbeddelaya.

Heerka Caadiga ah	Heerka Birta	Waxyaabaha Kiimikada ah (%)						Hantida Tijaabada ah						Charpy(V darajo) Tijaabada Saamaynta
		c	Mn	p	s	Si	Kale	Xoogga Wax Soo Saarka(Mpa)		Xoogga Tijaabada(Mpa)		(L0=5.65 √ S0 ）Daqiiqo Heerka Fidinta (%)
		ugu badan	ugu badan	ugu badan	ugu badan	ugu badan	Kale	daq	ugu badan	daq	ugu badan	D ≤ 168.33mm	D ＞ 168.3mm
GB/T3091 -2008	Q215A	≤ 0.15	0.25 ＜ 1.20	0.045	0.050	0.35	Ku darista NbVTi iyadoo la raacayo GB/T1591-94	215		335		15	> 31
	Q215B	≤ 0.15	0.25-0.55	0.045	0.045	0.035		215		335		15	> 31
	Q235A	≤ 0.22	0.30 ＜ 0.65	0.045	0.050	0.035		235		375		15	>26
	Q235B	≤ 0.20	0.30 ≤ 1.80	0.045	0.045	0.035		235		375		15	>26
	Q295A	0.16	0.80-1.50	0.045	0.045	0.55		295		390		13	>23
	Q295B	0.16	0.80-1.50	0.045	0.040	0.55		295		390		13	>23
	Q345A	0.20	1.00-1.60	0.045	0.045	0.55		345		510		13	>21
	Q345B	0.20	1.00-1.60	0.045	0.040	0.55		345		510		13	>21
GB/ T9711- 2011 (PSL1)	L175	0.21	0.60	0.030	0.030		Ikhtiyaar ah ku darista mid ka mid ah walxaha NbVTi ama isku-darka kasta oo iyaga ka mid ah	175		310		27		Hal ama laba ka mid ah tusmada adkaanta Tamarta saamaynta iyo aagga jarista ayaa la dooran karaa. L555, eeg heerka.
	L210	0.22	0.90	0.030	0.030			210		335		25
	L245	0.26	1.20	0.030	0.030			245		415		21
	L290	0.26	1.30	0.030	0.030			290		415		21
	L320	0.26	1.40	0.030	0.030			320		435		20
	L360	0.26	1.40	0.030	0.030			360		460		19
	L390	0.26	1.40	0.030	0.030			390		390		18
	L415	0.26	1.40	0.030	0.030			415		520		17
	L450	0.26	1.45	0.030	0.030			450		535		17
	L485	0.26	1.65	0.030	0.030			485		570		16
API 5L （PSL 1)	A25	0.21	0.60	0.030	0.030		Birta heerka B, Nb+V ≤ 0.03%; birta ≥ heerka B, ku darista ikhtiyaariga ah Nb ama V ama iyaga isku darka, iyo Nb+V+Ti ≤ 0.15%	172		310		(L0 = 50.8mm) inay noqoto lagu xisaabiyay qaacidada soo socota: e=1944·A0 .2/U0 .0 A: Bedka muunadda ee mm2 U: Xoogga ugu yar ee la cayimay ee Mpa		Midna ama midna ama labadaba saameynta tamar iyo xiirashada aagga ayaa looga baahan yahay shuruud adag.
	A	0.22	0.90	0.030	0.030			207		331
	B	0.26	1.20	0.030	0.030			241		414
	X42	0.26	1.30	0.030	0.030			290		414
	X46	0.26	1.40	0.030	0.030			317		434
	X52	0.26	1.40	0.030	0.030			359		455
	X56	0.26	1.40	0.030	0.030			386		490
	X60	0.26	1.40	0.030	0.030			414		517
	X65	0.26	1.45	0.030	0.030			448		531
	X70	0.26	1.65	0.030	0.030			483		565

Faa'iido kale oo ka mid ah tuubooyinka birta ah ee A252 Grade 3 waa kala duwanaanshahooda. Tuubooyinkan waxaa laga heli karaa cabbirro iyo dhumuc kala duwan, taasoo ka dhigaysa kuwo ku habboon adeegyo kala duwan. Hadday tahay dhisme yar.tuubada bulaacadaama tuubo saliid oo weyn, tuubo bir ah oo A252 Fasalka 3 ah si fudud ayaa loo habeyn karaa si loo daboolo shuruudaha mashruuca gaarka ah. Intaa waxaa dheer, tuubooyinkan waxaa laga samayn karaa qaab dhismeedyo kala duwan.tuubooyinka qaab-dhismeedka qaybta godan, iyagoo sii ballaarinaya isticmaalkooda mashaariicda dhismaha.

Marka laga soo tago xooggeeda iyo kala duwanaanshaheeda, tuubada birta ah ee A252 Grade 3 ayaa sidoo kale loo yaqaanaa kharash-oolnimada. Tuubooyinkani waa kuwo si fudud loo rakibi karo waxayna u baahan yihiin dayactir yar, taasoo yaraynaysa kharashyada guud ee mashruuca. Intaa waxaa dheer, cimrigooda dheer iyo iska caabbinta daxalka waxay hubinayaan inay bixiyaan faa'iido xooggan oo ku saabsan maalgashiga wasakhda iyo wasakhda.tuubo saliid ah xariiqmashaariicda dhismaha.

Faa'iido kale oo muhiim ah oo ka mid ah tuubooyinka birta ah ee A252 Grade 3 waa iswaafajinta habab kala duwan oo dhismaha ah. Tuubooyinkan waxaa lagu rakibi karaa iyadoo la adeegsanayo habab qodis dhaqameed ama farsamooyin aan qodin lahayn sida qodista jihada toosan, qabashada tuubooyinka ama tunnel-ka yar. Dabacsanaantani waxay u oggolaanaysaa rakibid hufan oo kharash-ool ah deegaanno kala duwan oo adag, oo ay ku jiraan meelaha magaalooyinka, marinnada biyaha iyo meelaha deegaanka xasaasiga u ah.

Guud ahaan, tuubooyinka birta ah ee A252 Heerka 3 waxay bixiyaan faa'iidooyin kala duwan oo loogu talagalay dhismaha dhuumaha wasakhda iyo batroolka. Xooggooda, cimrigooda, kala duwanaanshahooda iyo kharash-oolnimadooda ayaa ka dhigaya kuwo ku habboon codsiyadan adag. Hadday tahay in loo isticmaalo dhismaha dhuumaha wasakhda ama saliidda, tuubooyinkani waxay bixiyaan waxqabad la isku halleyn karo iyo qiimo muddo dheer ah. Natiijo ahaan, waxay weli yihiin xalka doorashada injineerada iyo qandaraaslayaasha raadinaya xalalka tuubooyinka waara oo la isku halleyn karo.

Kii hore: Tuubooyinka welded ee wareegsan ee loogu talagalay Khadka Gaaska Dabiiciga ah ee Dhulka hoostiisa mara

Xiga: Faa'iidooyinka Isticmaalka Tuubooyinka Birta Kaarboon ee Wareegsan ee Alxanka leh

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