(1) Cov hlau siv rau corrugated kab, kab, kab kab, kab kawg, thiab txuas bolts yuav tsum yog cov pa roj carbon zoo tib yam steel (Q235), thiab nws cov kev qhia tshwj xeeb yuav tsum ua raws li cov kev cai ntawm "Carbon Structural Steel" (GB 700).
(2) Splicing bolts. Corrugated beams yog cov tswv cuab nruj, yuav tsum muaj siab - lub zog bolts rau splicing los txhim kho lub zog ntawm cov pob qij txha. Nws raug nquahu kom siv No. 45 steel lossis 20MnTiB steel rau siab - lub zog bolts, ua raws li cov kev cai ntawm "High-Strength Torque-Shear Bolt Connections for Steel Structures" (GB 3632-3633): tensile zog > 9MP lub zog 1100MPa, elongation Ntau dua los yog sib npaug rau 10%, thiab shrinkage tus nqi 42%.
Lub taub hau ntawm siab - lub zog bolts tuaj yeem tsim los ntawm kev ua haujlwm txias lossis kub ua haujlwm, siv txoj kev dov los ua cov xov, ua raws li los ntawm quenching nyob rau hauv lub qhov cub ntsev da dej los yog cov menyuam lub qhov cub. Lub quenching kub yuav tsum tau xaiv ntawm 860℃thiab 880 degree, ua raws li tempering nyob rau hauv ib tug nitrate rauv ntawm 340℃mus rau 380℃los txhim kho nws lub zog thiab hardness. Txhawm rau txhim kho cov xeb tsis kam ntawm siab - lub zog bolt txuas thiab txhim kho lubrication ntawm bolts thiab txiv ntseej, lawv cov chaw yuav tsum tau lubricated kom zoo. Cov txiv ntseej rau siab - lub zog bolts yuav tsum zoo dua yog ua los ntawm No. 35 steel thiab tau txais kev kho cua sov kom tsim nyog. Lub cev muaj zog ntawm No. 35 steel yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm "Technical Conditions for High{13}}Quality Carbon Structural Steel" (GB). Cov kev cai cuam tshuam ntawm 699) yuav tsum siv.
Cov txiv ntseej yuav tsum zoo dua yog kub- forged thiab ua tiav tom qab kev kho cua sov. Txiv ntseej yuav tsum tau lubricated.
Cov tshuab ntxhua khaub ncaws yuav tsum tau xuas nrig ntaus los ntawm cov hlau tiaj tus los yog sawb hlau. Txij li cov kabmob nto ntawm lub tshuab ntxhua khaub ncaws yog ib qho tseem ceeb cuam tshuam rau lub torque coefficient, tshwj xeeb yuav tsum tau them rau qhov smoothness ntawm qhov chaw thaum xaiv cov ntaub ntawv, thiab yuav tsum tau them nyiaj mloog mus rau ntau yam kev ua yeeb yam ntawm cov punching thiab flattening tshuab siv rau xuas nrig ntaus thiab shaping lub washers. Cov txheej txheem tsim khoom ntawm cov tshuab ntxhua khaub ncaws yog: xaiv cov khoom siv → xuas nrig ntaus → xuas nrig ntaus → forging → sib tsoo → kho cua sov → khoom tiav.
(3) Kev tiv thaiv - thaiv thaiv. Kev tiv thaiv - thaiv thaiv tuaj yeem ua los ntawm cov hlau profile, thiab cov hlau yuav tsum ua raws li cov kev cai ntawm "Carbon Structural Steel" (GB 700). Nws cov xwm txheej yuav tsum ua raws li cov kev cai ntawm "Technical Conditions for Cold-Formed Steel" (GB 6725).
(4) Thaum cov kem yog embedded rau hauv pob zeb, cov pob zeb yuav tsum tsis pub tsawg tshaj 15. Cov khoom siv pob zeb yuav tsum ua raws li cov qauv kev lag luam tsheb thauj mus los tam sim no "Technical Specifications for Construction of Highway Bridges and Culverts" (JTJ). Raws li cov kev cai ntawm 041).
Kev Tiv Thaiv Kev Tiv Thaiv Cov Khoom Siv: Txhua qhov txias- tsim cov khoom siv hlau ntawm cov kab hluav taws xob corrugated yuav tsum tau ua los tiv thaiv- kev kho corrosion, feem ntau kub -dip galvanizing. Cov zinc siv rau kub -dip galvanizing yuav tsum yog Tsis yog. 0 lossis Tsis yog. 1 zinc raws li tau teev tseg hauv "Zinc Ingots" (GB 470).
Tom qab kub -dip galvanizing, bolts, txiv ntseej, thiab lwm yam fasteners yuav tsum muaj lawv cov xov ntxuav los yog raug centrifugal sib cais. Nyob qhov twg tej yam kev mob tso cai, bolts, ceev, thiab lwm yam fasteners kuj raug kho nrog hmoov txheej.
Txoj kev tiv thaiv- kev kho corrosion ntawm cov guardrails txav tau yog nyob rau hauv txoj cai tib yam li cov kab corrugated guardrails. Thaum siv kub -dip galvanizing, zinc txheej txheej yog teev raws li 600g / m2. Hauv cov cheeb tsam uas cov hlau yog abrasive hnyav, kub-dip aluminizing, dip txheej, thiab hmoov txheej txheej tuaj yeem siv tau. Cov cheeb tsam tuaj yeem xaiv txoj kev tsim nyog raws li cov xwm txheej hauv zos thiab kev sib piv kev lag luam thiab kev ua haujlwm. Thaum siv kub -dip aluminizing, cov txheej txheem tuaj yeem ncav cuag 110-120g / m2. Nyob rau hauv cov cheeb tsam uas tshwj xeeb tshaj yog corrosion los yog rau lub hom phiaj zoo nkauj, guardrail steel Cheebtsam yuav coated nrog yas los yog pleev xim rau tom qab galvanizing.