H beams thiab I beams yog ob yam sib txawv ntawm cov khoom siv hlau uas feem ntau siv hauv kev tsim kho. Qhov txawv ntawm lawv yog lawv cov duab. Ib qho H beam zoo li tus ntawv "H" nrog rau ib lub flange ntsug thiab ob sab ntev flanges, whereas I beam muaj ib qho ntoo khaub lig-section uas zoo li tsab ntawv "I" nrog ib lub web ntsug lossis lub vev xaib tuab tshaj plaws ntawm nruab nrab ntu. , ob lub webs, thiab tsis muaj flange hauv qab.
Cov tswv cuab steel no muaj cov cuab yeej zoo sib xws tab sis txawv ntawm cov yam ntxwv.
H-beams muaj txiaj ntsig zoo dua li I-beams vim tias lawv zoo dua ntawm kev nqa cov khoom khoov thiab shear loads. H-beams muaj lub web tuab, qhov tob dua, uas txhais tau hais tias lawv tuaj yeem txhawb nqa qhov hnyav ntawm cov khoom tso rau saum lawv. Qhov no kuj tseem pab sib npaug ntawm cov khoom thauj khoom uas yuav muab tso rau ntawm H-beam yav tom ntej (xws li cov plag tsev ntxiv lossis kab teeb). Ntxiv rau qhov muaj ntau dua seem modulus - uas txhais tau hais tias lawv muaj peev xwm tiv thaiv compression rog zoo dua li I-beams ua - lawv kuj muaj qhov muaj zog tensile ntau dua, txhais tau hais tias lawv tsis tshua muaj peev xwm khoov nyob rau hauv siab los ntawm kev nruj zog ua rau lawv. .
Ua kom luv, qhov sib txawv tseem ceeb ntawm H-nqaj thiab I-nqaj yog tias lub vev xaib ntawm H-nqaj yog tuab dua li ntawm I-beam. Lub web thicker txhais tau hais tias lub nqaj muaj zog, uas tso cai rau muaj peev xwm thauj khoom ntau dua. Qhov no txhais tau hais tias rau tib tus nqi ntawm cov qauv kev txhawb nqa, koj tuaj yeem siv H beam tsawg dua li kuv kab.
Lwm qhov sib txawv ntawm ob hom kab teeb no yog tias es tsis txhob ncaj nce thiab nqis zoo li nyob rau hauv cov ntaub ntawv nrog rau feem ntau ntawm lwm yam kab teeb (xws li T los yog L), H beams yog nkhaus sab nraud ntawm ob qho tag nrho los tsim flanges thiab webs uas khiav. parallel rau ib leeg raws lawv qhov ntev. Cov qauv no ua rau lawv tshwj xeeb tshaj yog haum rau nqa cov khoom thauj khoom - uas txhais tau hais tias lawv zoo heev yog tias koj xav tau ib daim ntoo lossis hlau los khoov me ntsis thaum nyob ruaj khov tab sis hloov tau thoob plaws nws qhov ntev - thiab tseem pab lawv nqa cov khoom hnyav dua li lwm yam. hom vim tias lawv faib kev ntxhov siab sib npaug ntawm lawv qhov ntev es tsis yog tsom rau ntawm ib qho kawg uas nws tuaj yeem rub tawm yooj yim vim kev qaug zog tsis ua haujlwm).
