Nov yog qhov sib txawv tseem ceeb ntawm I-beams thiab H-beams:
Cross-Sectional Shape:
I-Beam: Ib qho I-beam muaj cov duab sib dhos uas zoo ib yam li tsab ntawv "I" lossis "H" nrog rau lub vev xaib nqaim dua (cov ntsiab lus ntsug) thiab ob lub flanges ( kab rov tav cov ntsiab lus) uas dav dua lub vev xaib. Sab saum toj thiab hauv qab flanges yog parallel rau ib leeg.
H-Beam: Ib qho H-beam, raws li lub npe qhia, muaj cov duab sib dhos uas zoo li tsab ntawv "H," nrog qhov sib npaug-dav flanges thiab lub web ntsug tuab txuas rau lawv.
Kev siv:
I-Beam: I-beams feem ntau yog siv los ua kab rov tav txhawb nqa lossis ua joists hauv kev tsim vaj tsev. Lawv yog qhov zoo rau cov ntawv thov uas qhov kev thauj khoom feem ntau xav tau kev txhawb nqa hauv ib qho kev taw qhia (feem ntau ntsug) thiab qhov twg lub nqaj qhov tob yuav raug txwv.
H-Beam: H-beams yog siv nyob rau hauv daim ntaub ntawv uas lub load xav tau kev txhawb nqa nyob rau hauv ob qho tib si ntsug thiab kab rov tav cov lus qhia. Lawv feem ntau ua haujlwm raws li kab thiab kab teeb hauv cov txheej txheem, xws li lub tsev thav duab thiab txuas hniav, kom muaj kev ruaj ntseg ntau dua thiab muaj peev xwm thauj khoom.
Strength-rau-Weight Ratio:
I-Beam: I-beams zoo li muaj zog-rau-hnyav piv dua li H-beams. Qhov no txhais tau hais tias lawv muaj peev xwm nqa tau ntsug loads thaum txo qhov hnyav tag nrho ntawm lub nqaj.
H-Beam: H-beams muaj qhov qis zog-rau-qhov hnyav piv piv rau I-beams. Txawm li cas los xij, lawv cov qauv tsim tau zoo dua rau cov ntawv thov uas ob qho tib si ntsug thiab kab rov tav yuav tsum tau txhawb nqa.
Kev faib tawm hnyav:
I-Beam: Cov load feem ntau yog faib raws sab saum toj thiab hauv qab flanges ntawm I-beam, uas ua rau lawv haum rau cov kev siv qhov twg cov load feem ntau yog concentrated nyob rau sab saum toj lossis hauv qab.
H-Beam: H-beams faib cov khoom sib npaug ntawm ob qho tib si flanges thiab lub vev xaib, uas tso cai rau lawv los tuav cov khoom uas siv zog hauv ntau qhov kev qhia.
Nqi thiab Muaj:
I-Beam: I-beams feem ntau tau yooj yim dua thiab tej zaum yuav kim dua piv rau H-beams rau qee yam kev siv.
H-Beam: H-beams feem ntau yog siv rau hauv cov ntawv thov uas lawv cov duab tshwj xeeb thiab cov peev txheej thauj khoom yuav tsum muaj, thiab lawv yuav raug nqi zoo hauv cov xwm txheej ntawd.
