Yuav ua li cas xaiv txoj cai galvanized hloov cov yeeb nkab sib chaws rau ib qhov project?
Xaiv txoj cai Galvanized hloov cov yeeb nkab sib xyaw rau ib qho project no yuav tsum xav txog plaub qhov tseem ceeb, nruab nrab ntawm cov khoom siv nruab nrab (yog tias siv rau kev xav tau), thiab cov kev teeb tsa nruab nrab. Qhov kev txiav txim siab no yuav tsum tau ua raws cov ntsiab lus tseem ceeb xws li cov yeeb nkab cov khoom, txheej uas cov txheej txheem tuab, phab ntsa tuab, thiab cov txheej txheem galvanizing. Cov hauv qab no yog ib kauj ruam - {{3} {}}}}}}}}}}}}}}}}}}}}}}}}}} Cov txheej txheem xaiv:
1. Kauj ruam 1: Txheeb xyuas cov haujlwm tseem ceeb tshaj plaws -} tsim lub hauv paus rau kev xaiv
Ua ntej xaiv cov lus qhia tshwj xeeb, nws yog ib qho tseem ceeb kom ua ntej cov ntaub ntawv tshwj xeeb thiab cov tseev kom muaj ntawm galvanized hloov cov yeeb nkab hauv txoj haujlwm. Qhov no yog qhov ua ntej rau txhua qhov kev xaiv tom qab. Cov ntawv thov sib txawv yuav tsum muaj cov ntawv sib txawv rau cov kav dej puag ncig. Cov xwm txheej uas muaj tawg raws li nram no:
Engineering Teeb Meem: Cov cai yuav tsum tau (yuav tsum tau lees tias ua ntej)
Cov qauv kev txhawb nqa (piv txwv li, scaffolding, steel qauv kab ntawv): 1. Cov qauv hluav taws xob (zoo li qub, piv txwv li, kev ua haujlwm hnyav
2. Kev ncua deb ntawm cov ntsiab lus txhawb);
Cov roj thauj khoom (piv txwv li cov dej kav dej, cov kav dej ntws): 1. Thauj nruab nrab (dej phwj tuaj, cuam tshuam rau kev ua kom corrosion tiv thaiv);
2. Kev khiav hauj lwm siab (piv txwv li, lub nroog dej siab yog kwv yees li 0.3-0.6 mpa);
3. Flow tus nqi (xav kom phim cov yeeb nkab taub kom tsis txhob muaj ntau dhau los lossis tsawg ntws);
Cov chaw tiv thaiv (piv txwv li, tus saib xyuas, laj kab): 1. Kev tiv thaiv kev tiv thaiv (piv txwv li, kev tiv thaiv txoj kev yuav tsum tau tiv thaiv kev loj hauv tsheb);
2. Tsos thiab Kev Nruab Nruab Nruab Nrab (cuam tshuam rau kev lag luam ua haujlwm ntawm cov kab ntsig ntxig thiab phab ntsa tuab);
Cov ntawv thov kev ua liaj ua teb (piv txwv li, cov kav dej tsis huv, tsev cog khoom hauv tsev cog khoom): 1. Sab nraum zoov huab cua (txawm tias nws yuav raug rau ib puag ncig dej nyab lossis dej qab ntsev);
2. Yuav tsum muaj lub teeb yuag (lub tsev cog khoom thav duab yuav tsum sib npaug lub zog thiab qhov hnyav)
Kauj Ruam 2: Xaiv raws li cov kev xav tau ntawm cov neeg kho tshuab -}} cov khoom + Phab ntsa tuab)
Kev ua haujlwm zoo yog qhov tseem ceeb los ua kom muaj kev nyab xeeb tshaj tawm. Cov khoom siv xaiv thiab phab ntsa tuab muaj kev sib tw yog qhov ua kom tsis muaj zog los yog kev xaiv lub zog tsis txaus ntseeg: Kev xaiv muaj zog thiab tus nqi
Cov khoom siv hauv paus ntawm galvanized round round cov yeeb nkab ncaj qha txiav nws cov cuab yeej tseem ceeb, xws li lub zog tensile thiab tawm lub zog. Kev xaiv yuav tsum ua raws li lub nra / cov kev xav tau ntawm txoj haujlwm. Cov ntawv thov cov ntaub ntawv seem yog raws li hauv qab no:
Cov Khoom Siv Khoom Siv Tawm Zog Zog (ntau dua los yog sib npaug rau MPa) tensile lub zog (ntau dua los yog sib npaug rau MPa) Nta thiab kev siv
Q 195 195 315-430 Lub zog qis thiab tus nqi qis, haum}}}}}}}}}}}} CEEB TOOM ZEB RAU ARRICKAUM ZIB TSEV YAJ).
Q215 215 335-450 Medium strength and high cost-effectiveness, suitable for general load-bearing applications (such as low-rise building scaffolding and non-high-pressure water pipes).
Q235 (feem ntau siv) 235 375-500 lub zog, haum}}} Cov kav dej siab, thiab cov qauv dej hlau txhawb nqa).
Q355B {355 470-630 Lub zog siab thiab qis}}} cov cim hluav taws xob (}
20 # (High {{{- Zoo carbon hlau) {} qhov ntsuas ntshav siab dua, haum rau cov raj ntsuas dej zoo thiab cov kav dej kom huv nrog kev nyiam huv).
2. Phab ntsa thickness xaiv: suav kom tau ua kom tau lub zog / siab xav tau.
Phab ntsa thickness ncaj qha txiav txim siab "load {{{bearing {{bearing {1} {bearing pipes. Thicker Phab Ntsa Thickness nce lub zog, tab sis kuj nce tus nqi. Nws yog ib qho tsim nyog los txiav txim qhov "tsawg kawg nkaus phab ntsa thickness" los ntawm cov lej sib xyaw lossis los ntawm cov lus sab laj kom tsis txhob muaj cov khib nyiab tshaj {}} Xaiv.
Cov xwm txheej 1: Kev txhawb nqa qauv (thauj khoom {{{}}} cov kabmob suav)
Kev suav yuav tsum tau ua raws li cov qauv "Steel qauv qauv tsim qauv" (GB 50017). Lub hom phiaj tseem ceeb yog txhawm rau txheeb xyuas cov yeeb nkab sib nraus "ruaj khov" (zam kev tsis ruaj khov khoov) thiab "lub zog" (zam kev hla dhau- kev muaj kev ntxhov siab ntev) hauv qab. Yooj yim hluav taws xob: qhov loj dua cov log thiab cov tuab dua ntawm cov phab ntsa tuab los yog loj dua lub taub ntawm inertia thiab txhim kho bype distance).
Piv txwv li: Rau qhov scaffolding ncaj nrog kev ncua 3 metres thiab ib qho load ntawm 5knm, peb xaiv cov raj ntawm ntau dua lossis sib npaug ntawm 2.75 hli (tus qauv kev lag luam txheem). Cov Xwm Txheej 2: Kev Thauj Khoom Siv (Kev Ntsuas Siab)
Kev suav yuav tsum tau ua raws li "tus qauv tsim rau cov kav dej hlau muaj kev lag luam" (GB 50316). Tus qauv mis tseem yog:
Phab Ntsa Thickness Δ {= (p × d) / (2 × d) σ] σ] σ σ) + c
Qhov twg:
P: Ua haujlwm siab (MPA, kev nyab xeeb yuav tsum muaj, feem ntau 1.2-1.5 zaug tsim kev tsim siab);
D: Yeeb Nkab Sab Nraud Inch (MM);
[σ]: Cov kev ntxhov siab uas tau pub muaj kev ntxhov siab ntawm cov ntaub ntawv ntawm kev ua haujlwm kub (MPA, xa mus rau cov lus qhia kub; piv txwv li, [σ113 MPa rau 20 degree);
: Weld coefficient (φ =1.0 rau cov kav dej seamless,=0.8-0.9 rau welded kav);
C: Corrosion Allowance (hli, 0.5-1.0 hli rau kev thauj mus los dej, 1.0-2.0 hli rau kev ua kom muaj kev tsheb thauj khoom ua kua). Piv Txwv: Cov Khoom Siv Hauv Nroog (P {} mpa}} mm, thiab kev xaiv tsawg kawg yog ib phab ntsa tuab ntawm 3.0mm (nrog rau ib qho kev nyab xeeb).