Likarolo tse ka sehloohong tsa sebopeho sa tšepe ke litšiea tsa tšepe tse bōpehileng joaloka H, maballo le li-bracings.Hangata deformation ea welding e sebelisa mekhoa e meraro e latelang ea ho lokisa lelakabe: (1) mokhoa oa ho futhumatsa ka mela;(2) Mokhoa oa ho futhumatsa letheba;(3) Mokhoa oa ho futhumatsa kgutlotharo.
1. Lokisa mocheso
Se latelang ke mocheso oa mocheso nakong ea khalemelo ea lelakabe (e entsoeng ka tšepe e bonolo)
Ho lokisoa ha mocheso o tlase likhato tse 500 ~ 600 mokhoa oa ho futhumatsa: metsi
Ho lokisa mocheso o mahareng likhato tse 600 ~ likhato tse 700 Mokhoa oa ho futhumatsa: moea le metsi
Tokiso e phahameng ea mocheso likhato tse 700 ~ 800 mokhoa oa ho futhumatsa: moea
Tlhokomeliso: Mocheso oa mocheso ha oa lokela ho ba holimo haholo ha tokiso ea lelakabe e le holimo haholo, 'me e phahame haholo e tla etsa hore tšepe e be brittle le ho ama matla a ts'usumetso.16Mn e ke ke ea pholile ka metsi nakong ea khalemelo e phahameng ea mocheso, ho kenyelletsa le litšepe tse nang le botenya bo boholo kapa litšekamelo tse thata.
2. Mokhoa oa ho lokisa
2.1 Angular deformation ea flange plate
Lokisa ho fetoha ha litšiea tsa tšepe tse bōpehileng joaloka H, maballo le li-angles tsa tšehetso.Ka poleiti flange (ka ntle ho lolamiso tjheseletsa) longitudinal linear futhumatsang (mocheso futhumatsang e laoloa ka tlaase ho likhato 650), ela hloko mefuta e fapaneng futhumatsang ha e fete mefuta e fapaneng laoloa ke maoto a mabeli tjheseletsa, kahoo u se ke ua sebelisa metsi tsidifatso.Ha u futhumatsa moleng, ela hloko: (1) ha ea lokela ho futhumatsoa khafetsa sebakeng se le seng;(2) U se ke ua nosetsa nakong ea mocheso.
2.2 Ho kheloha ka holimo le ho kheloha ho tlase le ho kobeha
(1) Ka poleiti ea flange, e shebaneng le weld ea longitudinal, ho tloha bohareng ho ea lipheletsong tse peli tsa mocheso o futhumetseng, o ka lokisa deformation ea ho khumama.Ho qoba ho khumama le ho sotha deformation, mabanta a mabeli a futhumatsang a etsoa ka nako e le 'ngoe.Ho lokisoa ha mocheso o tlase kapa ho lokisa mocheso o mahareng ho ka sebelisoa.Mokhoa ona o thusa ho fokotsa khatello ea kelello ho weld, empa mokhoa ona o na le shrinkage e kholo ea lateral ka nako e le 'ngoe le shrinkage ea longitudinal, eo ho leng thata ho e tseba.
(2) Ho futhumatsa ka mohala holim'a poleiti ea flange le ho futhumatsa ka kgutlotharo tepong.Sebelisa mokhoa ona ho lokisa deformation e kobehang ea litšiea, maballo, li-braces, phello e ea makatsa, bophara bo otlolohileng ba mocheso o otlolohileng hangata bo nkuoa 20-90mm, botenya ba poleiti ke hora, bophara ba ho futhumatsa bo lokela ho ba bo bobebe, 'me mokhoa oa ho futhumatsa o lokela ho ba bobebe. e atolosoe ho tloha bohareng ba bophara ho ea mahlakoreng a mabeli.Linear futhumatsang molemo ka ho fetisisa sebetsa ke batho ba babeli ka nako e le 'ngoe,' me joale mocheso bophara ba kgutlotharo kgutlotharo ha ea lokela ho feta makhetlo a 2 botenya ba poleiti, 'me botlaaseng ba kgutlotharo e lekana le linear futhumatsang bophara ba lepheo tšoanang. poleiti.kgutlotharo e futhumatsang e qala ka holimo ebe e atoloha ho tloha bohareng ho ea mahlakoreng, e futhumatsa lera ka lera ho fihlela tlase ho kgutlotharo.Mocheso ha oa lokela ho ba o phahameng haholo ha o futhumatsa marang-rang, ho seng joalo o tla baka deformation ea ho tepella maikutlo 'me ho be thata ho e lokisa.
Ela hloko: The ka holimo kgutlotharo futhumatsang mokhoa o boetse o sebetsa ho lehlakoreng koba khalemelo ea karolo.Ha ho futhumatsa, ho lokisoa ha mocheso o bohareng ho lokela ho sebelisoa, 'me ho nosetsa ho lokela ho fokotseha.
(3) Ho fetoha ha maqhubu a litšiea, maballo le marang-rang a tšehetso
Ho lokisa phetoho ea maqhubu, re tlameha ho qala ka ho fumana litlhoro tse phahamisitsoeng ebe re sebelisa mokhoa oa ho futhumatsa letheba ka hamore ea letsoho ho lokisa.Bophara ba letheba la ho futhumatsa hangata ke 50 ~ 90mm, ha botenya ba poleiti ea tšepe kapa sebaka sa wavy se le seholo, bophara bo lokela ho atolosoa, bo ka hatelloang d = (4δ + 10) mm (d ke bophara. ea sebaka sa ho futhumatsa; δ ke botenya ba poleiti) e baloa ho bala boleng ba ho futhumatsa.Grille e tsamaea ka spiral ho tloha tlhōrōng ea leqhubu 'me e lokisoa mocheso o mahareng.Ha mocheso o fihla ho likhato tse 600 ho isa ho tse 700, hamore e behoa moeling oa sebaka sa ho futhumatsa, ebe sledgehammer e sebelisoa ho otla hamore, e le hore tšepe e sebakeng sa ho futhumatsa e hateletsoe, 'me ho fokotseha ha pholileng ho fokotsehe.Khatello e feteletseng ea shrinkage e lokela ho qojoa nakong ea khalemelo.Ka mor'a ho lokisa letheba le le leng, ntlha ea bobeli ea crest e futhumatsoa, joaloka ka holimo.Ho potlakisa sekhahla sa ho pholisa, tšepe ea Q235 e ka pholile metsi.Mokhoa ona oa tokiso ke oa mokhoa oa ho futhumatsa letheba, 'me kabo ea libaka tsa ho futhumatsa e ka ba matheba a bopehileng joaloka a purumu kapa a ketane.Hlokomela hore o se ke oa feta likhato tse 750.
Mekhoa ea ho lokisa li-welds tsa fillet
Li-welds tsa fillet
Karolo ea 5.23 ea khatiso ea 2015 ea AWS D1.1 e sebetsana le lipehelo mabapi le liprofaele tse tjheselitsoeng tse amohelehang le tse sa amoheleheng.Ha boholo ba fillet weld e le kholo haholo ka lebaka la ho se tsotelle, litokisetso tsa profil ea welding tse thathamisitsoeng ho Karolo ea 5.23 li tla utloisisoa hampe.Ho ea ka Mokhatlo oa American Steel Structure Association, ho nka hore tšepe e feteletseng ea weld ha e kena-kenana le tšebeliso ea qetello ea setho, ntle le ho lokisa fillet weld, e ka 'na ea etsa hore metse e meholo ea fillet e chesehele (ebang ke ka lehlakoreng le leng kapa mahlakoreng ka bobeli. ) ho ba moholo hofeta tekanyo.Ho leka ho tlosa tšepe e feteletseng ea weld e hlalositsoeng ka holimo ho ka fella ka ho fokotseha, ho senyeha le / kapa ho phatloha ha chese.Ho tšoaroa ha sebopeho sa fillet weld ho tla latela litlhoko tse amehang tse boletsoeng Karolong ea 5.23.1 ea khatiso ea 2015 ea AWS D1.1.
Ke maemo afe a amohelehang a kopano bakeng sa ho theha motsoako oa sekhutlo?Karolo ea 5.22.1 ea khatiso ea 2015 ea AWS D1.1 e bolela hore tumello ea metso e lumelletsoeng e ke ke ea feta 1.59mm (1/16 in.) ntle le phetoho.Ka kakaretso, haeba boholo ba weld bo eketseha ka ho eketseha ha sebaka sa motso kapa haeba ho netefalitsoe ho fumana angle e hlokahalang e sebetsang ea concave, lekhalo le lumellehang la metso le nkoa le sa fete 4.76mm (3/16 in.).Bakeng sa botenya bo fetang kapa bo lekanang le 76.2mm (3 in.) Bakeng sa lipoleiti tsa tšepe, boleng bo amohelehang ba metso ke 7.94mm (5/16 in.) ha u sebelisa liphahlo tse loketseng.
Nako ea poso: Jun-06-2022