Siab - lub zog boltsyog cov tseem ceeb load-cov kabmob fasteners nyob rau hauv steel qauv engineering, thiab lawv cov installation zoo ncaj qha txiav txim siab txog kev nyab xeeb thiab durability ntawm tag nrho lub tsev. Raws li cov ntaub ntawv qhia txog kev tsim vaj tsev zoo los ntawm Ministry of Housing and Urban-Kev Txhim Kho Hauv Nroog, ntau dua 30% ntawm cov qauv kev nyab xeeb kev nyab xeeb nyob rau hauv steel qauv tej yaam num pib los ntawm tsis yog- ua raws siab - lub zog ntsia liaj qhov rooj.
Cov lus qhia dav dav no muab cov lus qhia nruj, kawg- rau- xaus lub luag haujlwm- suav nrog kev xaiv cov tswv yim, ua ntej-fabrication, ntawm- qhov chaw ua tiav, thiab QA/QC lees txais- nruj me ntsis raws li qhov hloov tshiab GB 50205-code. Raws li kev lag luam benchmark rau steel qauv kev ncaj ncees, nws ua hauj lwm raws li qhov tseeb siv rau thoob ntiaj teb engineers thiab cov neeg ua hauj lwm kom ntseeg tau tias uncompromising ua raws li Tuam Tshoj tus tshiab lub teb chaws cov qauv zoo.
Vim li cas thiaj siab -Lub zog Bolts siv hauv cov qauv hlau?
Ultra-siab load-cov kabmob muaj peev xwm:tsim los ntawm siab- steel muaj zog, muaj peev xwm tiv taus lub zog tensile thiab shear zog.
Kev sib txhuam- hom quab yuam hloov:Cheebtsam yog clamped ua ke los ntawm pretension, thiab shear tsis kam yog ua tiav los ntawm kev sib txhuam zoo li qub ntawm qhov chaw faying, yog li tiv thaiv lub bolt shank los ntawm kev ncaj qha rau shear thiab bearing deformation.
Seismic thiab dynamic load kuj:Nyob rau hauv kev rov ua dua alternating loads xws li cua los yog seismic kev txiav txim, cov bolts tsis yog nws yooj yim rau loosening thiab pom zoo zog dissipation thiab qaug zog kuj.
Efficiency installation:kev teeb tsa tau nrawm, yuav tsum tsis muaj qhov nyuaj ntawm - qhov chaw vuam ua haujlwm, thiab tuaj yeem ua kom luv luv ntawm kev tsim kho.
Kev hloov yooj yim:yuav tsum tau kev puas tsuaj tshwm sim los yog retrofitting yuav tsum tau, tshem tawm thiab hloov yog yooj yim heev, yooj yim rau ntev - tu ncua sij hawm.
Kev faib tawm thiab kev xaiv cov qauv ntawm High-Lub zog Bolt
Siab - lub zog bolts feem ntau siv hauv steel qauv engineering poob rau ob hom loj. Kev xaiv tsis raug tuaj yeem ua rau kev sib txuas tsis ua haujlwm, yog li lawv yuav tsum raug cais nruj me ntsis:
Kev sib txhuam- hom siab - lub zog bolts
Lub neej ntawd hom rau cov nroj tsuag muaj thiab pej xeem cov tsev, tso siab rau kev sib txhuam ntawm qhov chaw sib txuas ntawm cov phaj txuas kom hloov cov khoom thauj. Lawv muabtsawg deformation thiab zoo qaug zog kuj, ua lawvhaum rau tag nrho cov dynamically loaded thiab seismic structural kev sib txuas.Cov qhab nia ua tau raug cais raws li Qib 8.8 thiab Qib 10.9.
Cov kabmob - hom siab - lub zog bolts
Cov no tso cai rau plam ntawm qhov chaw sib tiv tauj thiab hloov cov khoom thauj los ntawm lub bolt shank bearing thiab shear resistance. Lawvmuab siab dua load peev tab sis ntau dua deformation, thiab yogtsuas yog tsim rau tsis yog - dynamically loaded, tsis yog - seismic theem nrab kev sib txuas.Lawv raug txwv nruj me ntsis rau thawj cov txheej txheem thauj khoom -cov kabmob pob qij txha.
Selection core specification:
Bolt txoj kab uas hla
Rau cov qauv kev sib txuas, M20, M22, thiab M24 nyiam dua. M16 thiab cov kab me me yog txwv tsis pub siv rau hauv kev thauj khoom thawj zaug -cov kabmob sib txuas.
Kev xaiv ntev
Tom qab zawm, lub ntsia liaj qhov rooj yuav tsum protrude 2-3 threads tshaj lub txiv ntoo. Qhov ntev tsis txaus tsis tuaj yeem ua kom muaj zog clamping, thaum ntev ntev ua rau cov nqi khoom siv.
Cov kev xav tau sib phim
Bolts, txiv ntseej, thiab cov ntxhua khaub ncaws yuav tsum tau muab los ua ib qho kev sib tw los ntawm tib lub chaw tsim khoom. Kev siv cov khoom sib xyaw los ntawm cov tuam txhab sib txawv lossis cov khoom sib txawv yog txwv nruj.
Cov kev cai tiv thaiv corrosion
Rau qhov chaw sab nraum zoov thiab ntub dej, kub -dip galvanized siab- lub zog bolts yog nyiam. Rau cov txheej txheem sab hauv tsev, dub - cov ntsia hlau tiav tuaj yeem siv.
Lus Cim: Qib 10.9 bolts yuav tsum tau ua raws li cov txheej txheem de-hydrogenation thaum kub-dip galvanizing rautiv thaiv hydrogen embrittlement. Rau cov phiaj xwm xa tawm, Dacromet txheej feem ntau yog ib qho kev nyab xeeb dua.
Peb Cov Haujlwm Npaj Ua Ntej Ua Ntej Siab -Kev Txhim Kho Lub Zog Bolt
Cov khoom tau txais kev tshuaj xyuas thiab tswj
Txhua pawg ntawm siab - lub zog bolts xa mus rau qhov chaw yuav tsum yognrog rau cov ntaub ntawv pov thawj zoo. Kev kuaj ua tim khawv thiab rov- kev sim yuav tsum uanyob rau hauv raws li cov cai yuav tsum tau rau lub torque coefficient (hnyav hex taub hau hom) los yog lub pretension (twist-tawm hom).
Bolts tsuas yog siv tom qab dhau qhov kev xeem rov-. Bolts yuav tsum tau muab khaws cia rau hauv qhov chaw qhuav thiab ventilated warehouse. Thaum lub ntim thawj qhib, cov bolts yuav tsum tau siv nyob rau tib hnub.Qhib - huab cua cia yog txwv nruj heev.Bolts uas xeb, paug nrog roj lossis roj, lossis cov xov puas yuav tsum tsis txhob siv.
Faying Surface Anti-Kev kho plam
Cov nplawm coefficient ntawm kev sib txuas ntawm qhov chaw sib txuas yog qhov tseem ceeb ntawm kev ua tau zoo rau siab -lub zog bolted kev sib txuas.Q355steel yuav tsum muaj qhov tsawg kawg nkaus swb coefficient ntawm0.45, thaumQ235steel xav tau yam tsawg kawg nkaus0.40. Kev ntxuav thiab tua blasting yog cov cai- raws li txoj kev kho mob; phau ntawv xov hlau txhuam rau kev tshem tawm xeb yog nruj me ntsis txwv.
Ua ntej installation,cov faus qhov chaw yuav tsum tau ntxuav kom huv si ntawm cov xim, roj, thiab xoob xebkom lawv qhuav thiab huv si. Daim ntawv thov ntawm ib txheej ntawm faying nto yog nruj me ntsis txwv tsis pub. Ib qho kev xeem nplawm coefficient yuav tsum tau ua ua ntej puv - nplai installation pib; kev teeb tsa tsuas yog ua tiav ntawm qhov loj me tom qab qhov kev xeem tau pom zoo.
Kev tsim kho cuab yeej Calibration
Hauv - qhov chaw calibration yuav tsum tau ua ua ntej kev tsim kho, thiabtorque sib txawv yuav tsum tau tswj tsis pub dhau ± 5%. Torque kev txheeb xyuas yuav tsum tau uaob qho tib si ua ntej thiab tom qab txhua txoj haujlwm. Kev siv cov khoom siv tsis raug cai lossis dhau sijhawm -rau- cov cuab yeej tshuaj xyuas yog txwv nruj.
Lub zog hluav taws xob shear wrench rau twist -off- hom bolts yuav tsum tau tshuaj xyuas tas li kom ntseeg tau tias qhov kawg ntawm spline tuaj yeem txiav tawm kom zoo.Kev hloov pauv ntawm tus qauv ciaj ntswj rau lub siab shear wrench yog nruj me ntsis txwv tsis pub.
Cov txheej txheem kev tsim kho tseem ceeb thiab cov cai yuav tsum muaj ntawm High-Lub Zog Bolt
1.Bolt Hole Alignment thiab Installation Specifications
Lub ntsia liaj qhov roojinsertion kev taw qhia yuav tsum uniformthoob plaws tag nrho qhov project los pab txhawb kev soj ntsuam zoo tom ntej.Tsav bolts rau hauv qhov nrog rauj yog nruj me ntsis txwv tsis pubkom tsis txhob xov puas thiab deformation ntawm lub phaj txuas. Thaum lub qhov misalignment tshwm sim, reaming nrog ib tug reamer yog yuav tsum tau;Gas txiav los yog arc hlawv ntawm qhov yog nruj me ntsis txwv tsis pub.
Tom qab reaming,lub qhov taub yuav tsum tsis txhob tshaj lub nominal bolt txoj kab uas hla ntxiv 3.0 hli. Tus naj npawb ntawm remed qhov ntawm ib qho kev sib koom yuav tsum tsis pub tshaj 25%ntawm tag nrho cov bolts ntawm qhov sib koom ua ke. Lub phab ntsa remed yuav tsum yog av du thiab tsis muaj burrs, thiab tag nrho cov hlau chips yuav tsum tau muab tshem tawm kom huv si ua ntej ntsia liaj qhov rooj.
2.Tightening Sequence Requirements
Lub hauv paus ntsiab lus ntawm "symmetrical zawm ntawm qhov chaw ntawm qhov sib koom sab nraud" yuav tsum tau ua raws li nruj me ntsis. Tightening los ntawm cov npoo mus rau qhov chaw yog nruj me ntsis txwv tsis pub kom lub connecting phaj ntawm bulging nyob rau hauv nruab nrab thiab kom tsis txhob ua tiav kev sib cuag ntawm qhov chaw sib cuag.
Tag nrho cov bolts ntawm ib leeg yuav tsum ua kom tiavpeb theem ntawm snug-tightening, re-tightening, thiab zaum kawg zawm hauv 24 teev. Kev ncua ntev ntawm cov theem yog txwv nruj heev.
3.Torque Control Standards
Pib nruj
50% ntawm qhov kawg zawm torque.Lub hom phiaj yog coj cov ntawv txuas rau hauv kev sib cuag thiab tshem tawm qhov khoob.
Re-tightening torque
Sib npaug rau snug-tightening torque.Cov kauj ruam no xyuas seb puas muaj cov bolts tau xoob tom qab snug-tightening thiab xyuas kom meej cov khoom sib npaug ntawm cov khoom xa tuaj thoob plaws txhua lub bolts.
Thaum kawg nruj torque
Xam rau tus lej formula Tc=K x Pc x d.
Thaum ua tiav qhov kawg nruj, hnyav hex bolts yuav tsum tau cim nrog cov xim los qhia qhov kawg nruj. Rau kev sib tw-tawm- hom bolts, qhov kawg spline yuav tsum raug txiav tag nrho.
Nco tseg:
K → torque coefficient
Pc → tus tsim pretension quab yuam ntawm lub ntsia liaj qhov rooj
d → lub nominal bolt txoj kab uas hla
4.Kev tsim kho ib puag ncig
Kev tsim kho yogtxwv tsis pubthaum los nag los yog thaum qhov chaw faus yog ntub.
Kev tsim khoyuav tsum nresThaum lub ambient kub poob qis dua -10 degree.
Thaum lub sij hawm tsim kho, thov pleev xim rau bolts yogtxwv tsis pub, thiab boltsyuav tsum tsis txhob muaj roj los yog hmoov av.
Hauv siab - cua txias, kev ruaj ntseg ib ntus ntawm boltsyuav tsum tau uativ thaiv kom tsis txhob poob.
5 Cov teeb meem zoo thiab cov kev daws teeb meem ntawm High-Lub zog Bolt Installation
1.Torque Coefficient tsis sib haum
Qhov teeb meem piav qhia:Lub torque coefficient dispersion ntawm bolts los ntawm tib lub batch ntau lawm yog siab heev, ua rau nws tsis yooj yim sua kom ntseeg tau raws li lub zog clamping.
Ua rau:bolt corrosion, oil contamination, cia tshaj 6 lub hlis, los yog intermixing ntawm cov khoom los ntawm txawv manufacturers.
Kev daws:tag nrho cov bolts ua tsis tau qhov kev xeem rov- yuav tsum tsis lees paub thiab tshem tawm ntawm qhov chaw. Bolts yuav tsum tau muab khaws cia rau hauv lawv cov ntim ntim thawj thiab siv li ntawm 24 teev tom qab qhib. Kev sib xyaw ntawm bolts, txiv ntseej, thiab cov ntxhua khaub ncaws los ntawm cov khoom sib txawv lossis cov tuam txhab sib txawv yog txwv nruj.
2. Substandard Faying Surface Slip Resistance
Qhov teeb meem piav qhia:tus nqi sib tw coefficient poob qis dua qhov tsim nyog yuav tsum tau ua.
Ua rau:Qib tshem tawm tsis txaus, muaj cov xim lossis roj ntawm qhov chaw faying, lossis deformation ntawm cov phaj txuas.
Kev daws:Txhua qhov chaw cuam tshuam yuav tsum tau rov ua dua- blasted kom ua tiav Sa 2.5 tus qauv tshem tawm xeb. Roj thiab xeb xeb yuav tsum tau ntxuav kom huv si siv acetone. Deformed txuas daim hlau yuav tsum ncaj los yog hloov. Yuav tsum tau ua ib qho kev xeem npliag coefficient tshiab, thiab kev tsim kho tsuas yog ua tiav tom qab qhov kev xeem tau pom tau tias ua tau.
3. Nyob rau hauv -Tightening, Over-Tightening, thiab Tsis Tightening ntawm Bolts
Qhov teeb meem piav qhia:qhov kawg zawm torque tsis ua tau raws li qhov yuav tsum tau ua, thiab qee qhov bolts tsis tau ua tiav qhov kawg nruj.
Ua rau:uncalibrated torque wrench, tsis yog -tus neeg ua hauj lwm tus qauv, los yog tsis muaj cov qhab nias zaum kawg.
Kev daws:calibrate lub torque ciaj ntswj ua ntej txhua txoj haujlwm. Kev tshuaj xyuas lub zog yuav tsum tau ua ob zaug - ntawm 1 teev thiab 24 teev tom qab qhov kawg nruj. Hauv qab -tightened bolts yuav tsum tau re-tightened rau lub torque teev; tshaj -cov ntsia hlau yuav tsum tau hloov nrog cov ntsia hlau tshiab. Txhua tus ntsia liaj qhov rooj yuav tsum tau cim nrog cov xim tam sim ntawd tom qab zawm zaum kawg kom tshem tawm tsis tau zawm.
4. Kev sib cuag tsis tiav ntawm cov phaj txuas
Qhov teeb meem piav qhia:Qhov khoob muaj nyob nruab nrab ntawm cov phiaj sib txuas, thiab qhov ntsuas qhov ntsuas tau tuaj yeem tso.
Ua rau:Kev nruj nruj tsis raug, deformation ntawm cov phaj txuas, los yog muaj cov khib nyiab ntawm qhov chaw faying.
Kev daws:nruj me ntsis raws li symmetrical zawm ib ntus los ntawm qhov chaw sab nraud. Deformed txuas daim hlau yuav tsum tau mechanically straightened. Ua ntej kev teeb tsa, ua tib zoo ntxuav tag nrho cov khib nyiab los ntawm qhov chaw faying. Thaum qhov sib txawv tshaj 0.5 hli, steel shim daim hlau yuav tsum tau muab tso rau hauv qhov khoob.
5. Xov puas thiab Bolt Fracture
Qhov teeb meem piav qhia:bolt threads puas, los yog bolts puas thaum lub sij hawm kawg zawm.
Ua rau:tsav bolts rau hauv qhov los ntawm kev quab yuam, cov khoom siv ntsia hlau tsis zoo, lossis dhau - zawm.
Kev daws:hammering bolts yog nruj me ntsis txwv tsis pub; qhov twg qhov misalignment tshwm sim, ream nrog ib tug reamer. Tag nrho cov bolts puas lawm yuav tsum tau hloov, thiab cov khoom siv ntsia liaj qhov rooj yuav tsum tau rov ua dua - sim. Qhov kawg zawm torque yuav tsum nruj me ntsis tswj, thiab tshaj - nruj nruj yog txwv tsis pub.
6 Kev lees paub zoo rau kev ua haujlwm siab -Lub zog Bolt Installation
Kev lees txais cov ntaub ntawv
Cov ntaub ntawv pov thawj cov khoom siv ntsia liaj qhov rooj, rov- cov ntaub ntawv xeem, daim ntawv qhia kev sib tw coefficient, cov ntaub ntawv teev cov ntaub ntawv torque wrench calibration, thiab cov ntaub ntawv kev tsim kho yuav tsum ua kom tiav thiab ua tiav.
Kev Pom Zoo
Cov ntsia liaj qhov rooj qhov kev taw qhia yuav tsum tsis sib xws, nrog 2 mus rau 3 threads nthuav tawm dhau lub txiv ntoo. Yuav tsum tsis muaj qhov tsis tau kaw thiab tsis muaj cov bolts loosened. Qhov kawg zawm cov cim yuav tsum meej thiab ua tiav.
Torque Txais
Rau hnyav hex bolts, random sampling ntawm 10% ntawm cov pob qij txha (nrog tsawg kawg yog 10 pob qij txha) yuav tsum tau soj ntsuam. Lub zog sib txawv ntawm ± 10% yog pom tau.
Twist -Tawm - Hom Bolt Txais
Lub spline- kawg shear- tawm tus nqi yuav ncav cuag 99% lossis siab dua. Bolts uas nws qhov kawg tsis tau txiav tawm yuav tsum raug kuaj xyuas lub zog raws li tus qauv hnyav hex bolt.
Faying Nto Txais
Cov hlau txuas yuav tsum nyob rau hauv kev sib cuag nruj. Thaum kuaj nrog 0.3 hli ntsuas qhov ntsuas, qhov tob tob yuav tsum tsis pub tshaj 20 hli.
Kev lees txais kev tiv thaiv corrosion
Tom qab ua tiav qhov kawg nruj, cov tshuaj tiv thaiv- cov xim xeb yuav tsum sib npaug rau cov ntsia hlau taub hau, txiv ntseej, thiab cov phaj sib txuas. Yuav tsum tsis txhob plam txheej thiab tsis sagging.
Siab - lub zog ntsia liaj qhov rooj yog qhov tseem ceeb ntawm kev tswj xyuas qhov txuas hauv steel qauv kev tsim kho - tsis muaj chaw rau qhov tsis saib xyuas me ntsis. GNEE tau tsim kom muaj tag nrho - txheej txheem siab - lub zog ntsia hlau txhim kho kev tswj xyuas qhov zoo. Los ntawm cov khoom tau txais, dhau ntawm - qhov chaw teeb tsa, mus txog qhov kawg kev lees paub, txhua theem nruj ua raws li cov qauv hauv tebchaws. Cov kws tshuaj xyuas zoo tau raug xaiv los muab tag nrho - lub sijhawm saib xyuas thoob plaws hauv cov txheej txheem, ua kom muaj kev sib txuas zoo ntawm txhua qhov sib koom ua ke thiab tiv thaiv kev ruaj ntseg ntawm lub tsev.
Xav tau kev pab txhawb nqa rau Steel Structure Siab -Lub zog Bolt Installation?
Kev xaiv ntsia liaj qhov rooj kom raug, cov txheej txheem kev teeb tsa, kev tswj lub zog, thiab kev tshuaj xyuas zoo yog qhov tseem ceeb rau kev nyab xeeb thiab ntev - lub sijhawm ua haujlwm ntawm cov qauv steel. Yog tias koj xav tau kev pab tswv yim, kev txhawb nqa engineering, lossis kev daws teeb meem steel qauv, peb cov kws tshaj lij engineers tau npaj los pab koj qhov project los ntawm kev tsim mus rau kev xa khoom.
Hu rau tam sim no kom thov kev sab laj kev tshaj lij
FAQ:
Dab tsi yog qhov siab - lub zog ntsia hlau?
Lub zog muaj zog bolts yog tsim los ntawm siab - lub zog carbon steel lossis los ntawm tempered alloy steel. Cov ntaub ntawv siab - muaj zog muaj peev xwm muab cov tensile thiab shear muaj peev xwm ntau dua piv nrog cov pa roj carbon zoo tib yam bolts (piv txwv li, Qib 4.6)
Siab -Lub zog Bolts tuaj yeem Welded?
Tsis yog. Feem ntau ntawm cov xwm txheej, vuam siab - lub zog bolts raug txwv nruj heev.
Yog vim li cas: qhov kub siab uas tsim los ntawm vuam yuav hloov cov cua sov- kho microstructure thiab cuam tshuam cov khoom siv ntawm lub ntsia liaj qhov rooj uas thaum xub thawj tau los ntawm kev kho cua sov, ua rau kom txo tau lub zog los yog tawg tawg.
High -Lub zog Bolts tuaj yeem rov qab siv tau?
Kev sib txhuam- hom: feem ntau, High- lub zog bolts uas tau raug pretensioned yuav tsum tsis txhob rov qab siv dua (ib AISC 360-16 thiab EN 1993-1-8) rau rov siv dua tom qab lawv qhov kev teeb tsa thawj zaug tau ua tiav qhov kev xav tau tshwj xeeb.
Cov kev cai tshwj xeeb: bolts hauv nro- kev sib txuas los yog siab - qhov chaw muaj kev ntxhov siab tshwj xeeb yuav tsum tau hloov ncaj qha nrog cov tshiab tom qab tshem tawm kom tsis txhob qaug zog.