Dab tsi yog Steel Cross (Cruciform) Kem?
Cov kab hlau hla kab - ua tau ib kab kem ntoo - yog ib qho ua tau - cov tswv cuab ntawm tus ntoo khaub lig - ntu ua ib qho ntxiv kos npe (+). Nws feem ntau yog tsim los ntawm kev vuam T- ntu rau flanges ntawm H- ntu, lossis los ntawm kev koom nrog cov kab teeb ci thiab cov phaj, los tsim ib ntu nrog qhov sib npaug ntawm cov axes ntawm lub hauv paus.
Cov khoom tseem ceeb yog:
Central H-section (lub ntsiab chord)- cov tub ntxhais uas nqa axial compression thiab tiv thaiv lub sijhawm khoov.
Flange extensions (T- ntu)- welded rau ob sab ntawm lub vev xaib hauv nruab nrab kom sib npaug ntawm cov khoom thauj -cov kabmob profile.
Cov khoom sib txuas- brackets, stiffeners thiab shim phaj welded ntawm beam-rau-kem pob qij txha.
Xaus daim hlau- cov phaj tuab nyob rau sab saum toj thiab hauv qab uas hloov cov khoom thauj mus rau cov tswv cuab thiab cov hauv paus uas nyob ib sab.
Lub cruciform geometry muab cov kab sib txawv flexural nruj nyob rau hauv txhua qhov kev qhia, uas yog qhov tseem ceeb hauv ntau -storey thav duab raug cua thiab seismic quab yuam los ntawm txhua qhov kev taw qhia.
Vim li cas thiaj siv Hla kab hauv ntau-Khoom vaj tse
Uniform Bending Strength nyob rau hauv tag nrho cov kev taw qhia
Plaub qhov projecting flanges faib cov khoom sib npaug nyob ib ncig ntawm qhov chaw nruab nrab, yog li cov kem tiv thaiv kev khoov thiab buckling sib npaug ntawm ob lub ntsiab axes. Qhov no simplifies tsim nyob rau hauv thav ntawv qhov twg beams thav duab rau hauv kem los ntawm ntau cov lus qhia.
Zoo Buckling Resistance
Kev sib xyaw ua ke thiab cov kab hluav taws xob zoo ntawm gyration txo qhov kev pheej hmoo ntawm qaug zog -axis buckling piv nrog ib qho H- ntu ntawm qhov loj me, tshwj xeeb tshaj yog rau cov kab siab, me ntsis braced.
Qhov chaw -Kev sib koom ua ke zoo rau hauv Phab Ntsa
Vim hais tias cov flanges project nyob rau hauv plaub cov lus qhia, cruciform txhua yuav embedded nyob rau hauv lub phab ntsa kev sib tshuam thiab partitions tsis protruding rau hauv pem teb siv tau, uas yuav pab architects ua kom loj tshaj qhov chaw nyob rau hauv lub chaw ua hauj lwm thiab cov pej thuam.
Compatibility nrog Composite Tsim
Cruciform steel cores tuaj yeem muab tso rau hauv pob zeb ua steel -cov pob zeb sib xyaw (SRC) cov kab sib txuas, sib txuas cov kev ceev ntawm cov hlau erection nrog cov hluav taws kub nyhiab thiab khov ntawm pob zeb. Lub kem tuaj yeem txhim kho ua ntej raws li cov tub ntxhais ua haujlwm steel uas nqa kev tsim kho thaum lub pob zeb muab tso rau ntawm nws.
Cov ntawv thov hauv Multi-Khoom vaj tse
Siab -nce cores thiab perimeter thav duab- lub hauv paus of elevator- cov kab tseem ceeb thiab kab ib puag ncig ntawm cov tsev siab uas yuav tsum tau ua kom muaj kev nruj nruj.
Mixed - siv kev txhim kho- Hloov kab saum toj kawg nkaus qhib- phiaj xwm kev lag luam thiab khw muag khoom hauv tsev, qhov chaw loj, tsis muaj kev cuam tshuam hauv av- yuav tsum muaj qhov chaw hauv pem teb hauv qab cov pej thuam nyob.
Industrial chaw thiab warehouses- kab ntawv txhawb nqa hnyav ru tsev loads thiab crane systems thaum ua kom dav sab hauv.
Ntev - ncua chaw lag luam- ntsug kev txhawb nqa rau qhib - phiaj xwm chaw ua haujlwm layouts xav tau kab dav dav.
Kev txiav txim siab tsim
Cov qauv Load Requirement
Tuag, nyob, cua thiab seismic loads yuav tsum raug soj ntsuam raws li txoj cai tswj hwm - GB 50017 nyob rau hauv Tuam Tshoj, AISC 360 nyob rau hauv North America, los yog EN 1993 nyob teb chaws Europe - los xyuas kom meej lub zog, stability thiab serviceability ntawm cov kab thiab kev sib txuas.
Tshooj Sizing
Qhov dav ntawm flange, lub vev xaib qhov tob thiab phaj thicknesses raug xaiv kom haum rau lub tsev qhov siab, hauv pem teb spans thiab kem qhov sib nrug thaum ua kom txaus siab hauv cheeb tsam buckling txwv thiab ua kom siv tau hauv pem teb.
Beam kev sib txuas Compatibility
Cruciform kem yuav tsum lees txais kev sib txuas ntawm kab hluav taws xob mus txog plaub qhov kev taw qhia nrog lub zog txaus thiab nruj. Kev sib txuas tsim npog npog gusset daim hlau, stiffeners, siab - lub zog bolts thiab welds, thiab yuav tsum tau nthuav dav kom cov chaw sib dhos ncaj nraim.
Hluav taws kub Resistance thiab Corrosion Protection
Kev tiv thaiv hluav taws kub - intumescent txheej, board encasement los yog pob zeb encasement nyob rau hauv composite systems - yog teev raws li lub tsev hluav taws ntsuam xyuas. Sab nraud steel nto yog tiv thaiv los ntawm kev tua blasting rau Sa 2.5 nrog zinc-nplua nuj primer thiab tiav coats, los yog los ntawm kub-dip galvanizing rau raug mob.
Kev tsim khoom
CNC precision txiav- flange thiab web daim hlau raug txiav nrog cov cuab yeej CNC, thiab vuam bevels tau npaj los tsim cov lus qhia tshwj xeeb.
Skeleton los ua ke thiab vuam- cov cruciform alignment thiab tack welding yog ua los ntawm kev siv jigs, ua raws li kev siv tsis siv neeg submerged arc vuam (SAW) lossis roj-shielded arc vuam ntawm lub ntsiab seams.
Accessory installation- Internal stiffening diaphragms, shear studs, multi -directional brackets thiab base connection nodes yog haum thiab welded rau ib lub khw kos duab.
Xaus- ntsej muag milling thiab tshuaj xyuas- kem kawg yog milled tiaj tus rau kev thauj mus los tsis sib xws, thiab cov welds tseem ceeb raug tshuaj xyuas los ntawm kev kuaj tsis zoo xws li kuaj ultrasonic (UT).
Cov qib steel feem ntau siv yog Q235B, Q355B / C / D thiab Q420B ib GB / T 1591, ASTM A36 thiab A572 Qib 50, lossis EN 10025 S355JR, nrog kev ua tiav vuam raws li AWS D1.1 lossis EN 1090 raws li qhov project.
Thov Cruciform Kem Tsim thiab Fabrication Quote
Cov lus nug nquag
Dab tsi yog qhov txiaj ntsig tseem ceeb ntawm kab hla hla H- kab ke?
Ib qho H- ntu muaj zog feem ntau yog hais txog ib lub axis loj, thaum ib sab ntawm lub tog raj kheej muab lub zog zoo sib xws thiab nruj hauv ntau cov lus qhia. Qhov no symmetry ua rau nws zoo tagnrho rau txhua kab uas tau txais kev sib tshuam kab teeb thiab tso cai rau cov dej ntws sib txuas uas tsis protrude rau hauv pem teb siv tau.
Cov kab hlau hla feem ntau siv nyob rau hauv ntau-storey tsev nyob qhov twg?
Lawv feem ntau yog siv los ua cov pob txha ntsug ntawm qhov siab -nce thiab siab heev- cov tsev nce siab, nqa cov axial siab thiab lateral loads los ntawm cua thiab seismic. Lawv kuj tau siv hauv kev sib xyaws - siv cov pej thuam thiab tsev so uas cov kab yuav tsum tau txo qis.
Yuav ua li cas hla kab cuam tshuam rau sab hauv tsim thiab architectural chaw?
Vim hais tias cov flanges qhov project sib npaug ntawm plaub cov lus qhia, cov kab ntoo tuaj yeem sib xyaw kom huv si rau hauv kev sib tshuam ntawm cov phab ntsa thiab cov partitions, txo qhov pom kev cuam tshuam thiab tsim kom tsis muaj kev cuam tshuam qhib -plam hauv pem teb layouts.
Cov hlau hla kab tuaj yeem siv rau hauv thaj chaw seismic?
Yog lawm. Cruciform kem tsim kom zoo muab ductility thiab lub zog zoo -dissipation muaj peev xwm. Hauv cov cheeb tsam seismic muaj zog heev lawv tuaj yeem tsim los ua ib feem ntawm lub sijhawm nruj- tiv thaiv cov thav duab lossis ua ke nrog cov pob zeb ua vaj tse thiab cov hlau-cov pob zeb siv zog (SRC) kev tsim kho kom muaj kev ruaj ntseg zoo dua.
Yuav ua li cas cov qauv siv rau fabrication ntawm cruciform kab?
Kev tsim qauv feem ntau raug kuaj xyuas los ntawm GB 50017, AISC 360 lossis EN 1993, thiab kev tsim tawm tsam AWS D1.1 lossis EN 1090. Cov qib khoom ua raws GB / T 1591, ASTM A36 / A572 lossis EN 10025, thiab tag nrho cov welds tseem ceeb yog ua raws li kev sib tw {9.
Cov kab cruciform puas tuaj yeem muab cov khoom sib xyaw ua ke?
Yog lawm. Hla kab yog feem ntau muab nrog welded H-beams, kem kem, ncig hollow seem kab, purlins, khi rods, gusset daim hlau thiab siab - lub zog bolts thiaj li hais tias tag nrho cov ncej yog fabricated nyob rau hauv ib tug unified kam rau ua, nrog Hoobkas mus sib hais los ntawm cov pob qij txha tseem ceeb nyob qhov twg yuav tsum tau.