H-Section Steel Kem yog dab tsi?
Ib qho H-section steel kem yog ntsug load-cov tswv cuab uas nws tus ntoo khaub lig- seem zoo li tsab ntawv loj H: lub hauv paus web txuas ob qhov dav, sib npaug flanges. Lub geometry muab lub zog flexural siab txog qhov muaj zog axis, siv cov khoom siv tau zoo nyob rau hauv kev sib xyaw ua ke thiab khoov, thiab lub ntsej muag tiaj tus flange uas yooj yim rau kev sib txuas ntawm nqaj, crane brackets thiab bracing attachments. Cov yam ntxwv no ua rau H-sections tus qauv kem xaiv rau steel rhiav thiab warehouse tsev.
Lub luag haujlwm tseem ceeb hauv kev cob qhia steel
Cov ncej tseem ceeb: cov tswv cuab ntsug ntsug uas txhawb nqa lub ru tsev kab teeb, rafters thiab lub ru tsev, thiab nqa cov ncej mus rau hauv lub hauv paus.
Kev them nyiaj yug Crane khiav: txhua kab txuas mus rau cov kab hluav taws xob khiav ntawm cov kab hluav taws xob, tiv thaiv cov dynamic loads thiab lateral force generated los ntawm overhead cranes.
Cua-cov kab uas tiv taus thiab kab kab: cov tswv cuab ntawm cov phab ntsa gable thiab longitudinal phab ntsa uas tiv taus kab rov tav cua loads thiab brace tus ncej.
Mezzanine thiab platform kev txhawb nqa: txhua kab nqa cov plag tsev nruab nrab, cov khoom siv platform thiab cov kev pabcuam thauj khoom.
Xaiv Tshooj: Loads thiab Checks
Loads los xav txog
Kev xaiv ntu pib los ntawm cov rooj plaub uas tau teev tseg los ntawm qhov project: lub ru tsev tuag load, nyob load, daus load, cua load, seismic kev txiav txim qhov twg muaj feem xyuam, thiab crane loads nrog rau lub log loads, tej yam thiab longitudinal rog. Lub tsev ncua, kab sib nrug thiab qhov siab teeb tsa qhov ntev thiab qhov sib luag ntawm cov kab.
Kev kuaj xyuas
Lub zog: seem yuav tsum tiv thaiv kev sib xyaw ntawm axial compression thiab bi-axial dabtsi yog khoov yam tsis muaj kev tawm los, txheeb xyuas ib GB 50017-2017, EN 1993-1-1 lossis AISC 360.
Stability: thoob ntiaj teb kev ruaj ntseg ntawm cov tswv cuab thiab kev ruaj ntseg hauv zos ntawm flange thiab lub vev xaib yuav tsum raug txheeb xyuas kom tsis txhob muaj buckling ntxov ntxov.
Kev nruj thiab drift: sab saum toj hloov chaw thiab slenderness raug soj ntsuam raws li cov cai txwv kom lub tsev tsis sway ntau dhau thiab cranes nyob twj ywm.
Tshooj series thiab qib
Hot-rolled kem series muaj xws li HW (wide flange, siv rau txhua kab nrog tseem ceeb bi-axial dabtsi yog khoov) thiab HM ( nruab nrab flange, siv rau zeb tsev kem thiab sib sib zog nqus flexural cov tswv cuab) ib GB/T 11263, W duab ib ASTM A6/A992, thiab HE1002 EN.{101} Yog xav tau qhov loj los yog daim kab xev, welded ua -li H-kem yog fabricated rau seem uas teev.
| Qib | Txuj | Min. yield zog | Hom kev siv |
|---|---|---|---|
| Q235B | GB/T 700 | 235 MPa rau | Lub teeb thav duab thiab cov tswv cuab thib ob |
| Q355B/C/D/E | GB/T 1591 | 355 MPa rau | Cov kab kev cob qhia tseem ceeb; lub zog siab dua txo qhov loj me thiab tus kheej - hnyav |
| S235JR / S355JR / J0 / J2 | TS EN 10025-2 | 235/355 MPa | European tej yaam num |
| A36 / A572 Gr. 50 / A992 | ASTM A36 / A572 / A992 / ASTM A36 / A572 / A992 / ASTM A36 / A572 / A992 / ASTM A36 / A572 / A992 / ASTM A36 / A572 / A992 / ASTM A36 / A572 / A992 / ASTM A36 / A572 / A992 / ASTM A36 / A572 / A992 / ASTM A36 / A572 / A992 / A992 / ASTM A36 / A572 / A992 / A992 / ASTM A36 / A572 / A992 / A992 / A992 / A992 / ASTM A36 / A572 / A992) Cov ntawv pov thawj | 250/345/345-450 MPa | North American tej yaam num |
Fabrication thiab Surface Protection
Welded H-kem yog tsim los ntawm CNC txiav, haum- nce thiab tsis siv neeg submerged arc vuam (SAW), nrog rau qhov ntsuas qhov ntev thiab vuam NDT (UT/MT) ua raws li qhov xav tau los ntawm qhov project. Cov ntaub ntawv pov thawj thiab cov ntaub ntawv soj ntsuam nrog txhua pawg. Rau kev tiv thaiv corrosion, qhov chaw raug ntxuav kom huv rau Sa 2.5 rau ISO 8501-1 thiab coated nrog cov txheej txheem raws li ISO 12944, xws li cov primers sab hauv tsev mus rau C5 siab-cov tshuab ua haujlwm rau cov av noo lossis chaw ua haujlwm; Kub-dip galvanizing raws li ISO 1461 yog siv nyob qhov twg cov specification xav tau nws. Kev tiv thaiv hluav taws, xws li intumescent txheej lossis board cladding, yog thov kom ncav cuag qhov ntsuas hluav taws xob uas xav tau los ntawm tus tsim.
Cov ntsiab lus tseem ceeb ntawm Installation
Kev sib txuas ntawm lub hauv paus: txhua kab tau teeb tsa rau ntawm cov phiaj hauv paus thiab grouted hla lub thauj tog rau nkoj bolts. Lub verticality ntawm ib qho -storey kem yog feem ntau tswj nyob rau hauv H / 1000 ntawm kem qhov siab, nrog ib tug kiag li cap, raws li steel qauv txais code GB 50205.
Ntawm -site splicing: kab ntev yog spliced nrog bolted los yog welded kev sib txuas raws nraim li tsim; vuam txoj hauj lwm thiab cov txheej txheem yuav tsum tsis txhob hloov ntawm qhov chaw kom tsis txhob muaj kev ntxhov siab thiab teeb meem zoo.
Feem ntau cov teeb meem kev teeb tsa kom tsis txhob muaj: kev thauj mus los tsis txaus, tsis muaj qhov ntsuas qhov tseeb, tsis muaj kev tso cai txiav cov tswv cuab, thiab tsis muaj kev tiv thaiv- kho corrosion tom qab vuam los yog ntsia liaj qhov rooj zawm.
Kev lees txais: tom qab erection, cov qauv raug tshuaj xyuas rau kev sib tw, cov tswv cuab kev ruaj ntseg thiab kev sib txuas zoo raws li qhov kev lees paub ua ntej lub tsev raug xa mus.
Cov lus nug nquag
H-sab steel kem puas tuaj yeem hloov kho?Yog lawm. Qhov siab, flange thickness, qib steel, kev tiv thaiv nto thiab lub hauv paus phaj cov ntsiab lus tuaj yeem hloov kho raws li qhov yuav tsum tau ua, thiab welded ua - cov kab tuaj yeem tsim rau cov qauv kos duab rau cov tsis yog - cov qauv.
Yuav ua li cas xaiv qhov loj H-section kem?Los ntawm tus kws tsim qauv tsim, los ntawm kev suav cov load thiab cov lej kuaj xyuas lub zog, kev ruaj ntseg thoob ntiaj teb thiab hauv zos, thiab kev txwv tsis pub muaj zog los yog nruj, raws li GB 50017-2017, EN 1993-1-1 lossis AISC 360. Cov ntu tsis tuaj yeem xaiv los ntawm kev tsim lossis pom ib leeg.
Qhov twg yog qhov ntau dua, H-section lossis kem kem, rau kev cob qhia?H- ntu ntu yog qhov kev xaiv zoo tshaj plaws rau ib qho - tsev mills thiab lub teeb ntau -storey thav duab vim tias lawv muaj kev lag luam ntau dua hauv kev tsim thiab erection. Cov kab kem muab siab dua torsional tsis kam thiab yog siv qhov chaw tseem ceeb torsion thiab compression tam sim no.
Dab tsi yog hluav taws thiab kev tiv thaiv corrosion H-kem xav tau?Hlau poob lub zog ntawm qhov kub siab, yog li qhov kev ntsuas hluav taws kub yuav tsum tau ua tiav nrog kev tiv thaiv hluav taws xws li intumescent txheej lossis board. Rau corrosion, qhov chaw raug ntxuav thiab coated raws li ISO 12944, los yog kub -dip galvanized raws li ISO 1461 nyob rau hauv qhov chaw ntub los yog sab nraum zoov.
Cov ntaub ntawv twg yog muab rau cov kab?Mill daim ntawv pov thawj, kev soj ntsuam vuam thiab NDT cov ntaub ntawv, cov ntaub ntawv qhia txog qhov ntev thiab cov ntaub ntawv cim npe tau muab rau txhua qhov kev xa khoom, txhawb kev pom zoo hauv zos thiab tag nrho traceability.
Lub sij hawm xa tuaj li cas?Lub sij hawm yog nyob ntawm tag nrho cov tonnage, seem hom thiab teeb duab raws li txoj cai, thiab tau lees paub hauv kev sau ntawv nrog cov lus hais. Xauj peb ntau yam ntawm steel kem thiab kab teeb rau rhiav thiab warehouse tsev.