Yuav ua li cas kom tsis txhob Formwork Deflection thiab bowing thaum lub pob zeb Pour

Nyob rau hauv siab - nce kev lag luam kev tsim kho thiab hnyav civil engineering, ua tiav ib qho zoo kawg nkaus tiaj tus, cov qauv, tawm - daim ntawv ua tiav yog qhov tseeb ntawm kev siv tes ua haujlwm. Txawm li cas los xij, cov kws ua haujlwm hauv chaw ua haujlwm thiab cov neeg cog lus ua vaj tse feem ntau ntsib cov teeb meem raug nqi kim heev: cov vaj huam sib luag kaw ib ntus flexing, bowing, lossis bulging hauv qab qhov hnyav ntawm cov pob zeb ntub dej. Qhov tsis xav tau flexure no, technically hu ua formwork deflection, ua rau cov pob zeb tsis sib xws, qhov tsis raug, thiab qhov xwm txheej hnyav, kev puas tsuaj vaj huam sib luag. Thaum pouring slabs, txhua kab, los yog khaws cov phab ntsa, tswj vaj huam sib luag nruj yog qhov tseem ceeb rau ob qho tib si kev nyab xeeb ntawm qhov chaw thiab ua tau raws li cov qauv tsim kom zoo nkauj.

Thaum xaiv lub siab - qib vaj huam sib luag zoo li tau ntawv pov thawjF17 uayog lub hauv paus kauj ruam mus rau kev ntseeg tau ntawm cov txheej txheem, xaiv cov khoom ib leeg tsis tau lees tias ib tug bulge -dawb ncuav. Kev tiv thaiv deflection yuav tsum muaj kev nkag siab txog kev tsim vaj tsev sib sib zog nqus ntawm hydrostatic qhob siab, kev txhawb nqa tsim nyog framing lub sijhawm, thiab lub cev thauj khoom txwv tsis pub muaj peev xwm hla -laminated ntoo. Cov lus qhia ntxaws ntxaws no txheeb xyuas lub hauv paus ua rau ntawm lub vaj huam sib luag dabtsi yog khoov thaum muab tso ua ke thiab muab qhov ua tau zoo, qhov chaw-cov tswv yim pov thawj ntawmyuav ua li cas kom tsis txhob formwork deflection thiab bowinglos xyuas kom meej qhov tshwm sim flawless ntawm txhua lub ncuav.

Nkag siab qhov ua rau: Dab tsi ua rau Formwork Deflection?

1. Cov Khoom Siv Ua Kua Dej Hydrostatic Siab Dynamics

Ua ntej cov pob zeb tsim thiab siv tshuaj hydration, nws coj raws li cov kua dej hnyav ua rau sab nraud hydrostatic siab tiv thaiv cov ntaub ntawv ntsug thiab nqes gravitational load mus rau kab rov tav decks. Qhov kev siv ntawm lub siab no tsis sib xws; nws nce sai raws li ntau qhov chaw tsis muaj. Tus nqi nrawm nrawm ( ntsuas hauv metres ntawm ntsug nce toj ib teev), kev siv tus kheej -compacting pob zeb sib xyaw nrog cov nqi poob siab, thiab kev siv tshuab hauv lub cev txhua lub sijhawm ua rau lub taub hau siab tawm tsam lub ntsej muag ntoo. Yog hais tias qhov no cumulative load tshaj qhov Modulus ntawm Elasticity (MOE) ntawm lubhardwood formwork plywood, lub vaj huam sib luag yuav inevitably tawm los thiab hneev sab nraud ntawm nws cov ntoo txhawb nqa.

2. Tsis yog Joist thiab Bearer Spacing Ratios

Qhov kev tiv thaiv ntawm txhua lub vaj huam sib luag ntoo rau kev khoov yog tswj hwm los ntawm cov txheej txheem ntu - mus rau - qhov sib sib zog nqus tob. Ib qho yuam kev ntawm qhov chaw ua hauj lwm yog tso cov kev txhawb nqa joists sib nrug heev nyob rau hauv kev siv zog txuag ntawm framing ntoo los yog txhuas kab teeb. Vim hais tias khoov khov kho poob exponentially raws li lub unsupported span nrug nce, txawm ib tug me me tshaj -extension ntawm joist centers yuav ua rau ib tug qauv 17mm daim ntawv kom sag pom nyob rau hauv load. Kev nkag siabf17 formply load peevNyob rau hauv kev sib raug zoo rau joist chaw yog li ntawd tseem ceeb heev rau formwork designers thiab site supervisors.

Qhov tseem ceeb Formula Parameters rau Formwork Load Management

Txhawm rau ua kom lub vaj huam sib luag deflection nyob rau hauv qhov kev txwv tsis pub muaj peev xwm tsim tau- feem ntau txhais los ntawm Australian tus qauv AS6669 raws li qhov siab tshaj plaws ntawm 1/270th lossis 1/360th ntawm qhov kev ncua deb -formwork tsim yuav tsum ua raws li cov khoom thauj tsis raug.

Xam qhov tseeb F17 Formply Span Rating

CovF17 formply ncua kev ntsuasdictates qhov siab tshaj plaws nyob deb ntawm lub vaj huam sib luag tuaj yeem muaj kev nyab xeeb hla thoob plaws kev txhawb nqa thaum txhawb nqa cov pob zeb ntub dej thiab cov khoom siv nyob ua haujlwm yam tsis muaj kev txwv ntau tshaj li cov qauv deflection. Rau cov qauv 17 hli structural panels, ua kom qhov sib nrug ntawm 400mm thiab 450mm cov chaw muab kev nyab xeeb zoo tshaj plaws rau cov tsev nyob thiab kev lag luam slab qhov tob (150mm txog 300mm). Rau kev sib sib zog nqus slabs los yog tuab civil abutments, joist spacing yuav tsum tau txo mus rau 300 hli centres, los yog lub vaj huam sib luag thickness yuav tsum tau upgraded rau 19mm los tiv thaiv lub amplified dabtsi yog khoov lub sij hawm.

5 Qhov chaw-Cov tswv yim pov thawj los tshem tawm cov vaj huam sib luag Bowing thiab Blowouts

1. Match Vaj Huam Sib Luag Thickness rau ncuav Geometry thiab tus nqi

Ib txoj hauv kev zoo tshaj plaws los tshem tawm vaj huam sib luag distortion yog txuam vaj huam sib luag specification rau lub cev xav tau ntawm lub ncuav. Rau qhov hnyav tshem tawm decks, siv siab - ntom 17mm lossis 19mm panels tsim nrog 100% eucalyptus lossis birch veneers muab cov seem zoo dua piv rau cov sib xyaw sib xyaw- cov ntoo tawv tawv. Yog tias koj tsis paub meej txog kev xaiv cov ntawv profile kom raug rau koj cov txheej txheem framing layout, sab laj ib qho kev qhiaF17 daim ntawv qhia thickness="" will="" help="" you="" align="" panel="" strength="" with="" engineered="" support="">

2. Tswj Pour Heights thiab Vibration Protocols

Kev tswj cov txheej txheem tso dej ua ke ntawm qhov chaw tsuas yog qhov tseem ceeb raws li cov txheej txheem sub-. Pouring pob zeb hauv kev tswj cov nqa ntsug (feem ntau 500mm txog 800mm txheej) tso cai rau cov nqa qis qis pib pib qhov chaw pib, yog li txo qis lub siab hydrostatic siab lub taub hau ua rau hauv qab panels. Tsis tas li ntawd, thaum cov neeg kho tshuab poker vibrators yog tsim nyog los sib sau ua ke thiab tshem tawm cov honeycombing, cov neeg ua haujlwm yuav tsum tsis txhob tuav lub vibrator tip ncaj qha rau sab hauv lub ntsej muag ntawm cov plywood los yog tshaj -vibrating qis txheej uas twb tau pib stiffen, vim qhov no ua rau muaj huab cua nyob rau hauv lub cheeb tsam uas ua rau kom lub vaj huam sib luag mus tas li deformation.

3. Txheeb xyuas qhov tseeb AS6669 Cov Qauv Stress Grading

Nws yog tsis yooj yim sua kom tiv thaiv deflection yog hais tias lub panels ntsia rau ntawm qhov chaw tsis muaj cov neeg kho tshuab nruj raws li cov qauv engineering. Tsis yog-cov ntawv pov thawj lossis cov ntaub ntawv cuav feem ntau siv cov hom mos mos lossis cov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Xyuas kom meej tias txhua daim ntawv nqa ib daim ntawv pov thawjAS6669 daim ntawv pov thawj="" guarantees="" that="" the="" timber="" has="" undergone="" rigorous="" 4-point="" bending="" tests="" to="" verify="" its="" f17="" stress="" rating,="" giving="" contractors="" complete="" assurance="" that="" the="" panels="" will="" perform="" as="" predicted="" by="" structural="">

4. Tshawb xyuas ntug sealing thiab tiv thaiv kom tsis txhob ya raws o

Thaum cov ntoo plywood absorbs noo noo tsis sib xws, cov tub ntxhais veneers nthuav dav, ua rau thaj chaw warping thiab ntug o. Qhov tuab o no ua rau cov pob qij txha tsis sib xws ntawm cov ntawv uas nyob ib sab, ua rau pom ridges thiab cov kauj ruam - tawm ntawm lub ntsej muag kho mob. Txhawm rau tuav lub tiaj tus profile, nco ntsoov xyuas kom meej tias lub Hoobkas - siv cov xim pleev xim acrylic tseem zoo li qub. Txhua lub vaj huam sib luag uas tau txiav los yog txiav rau qhov loj me ntawm qhov chaw yuav tsum tau muab rov qab tam sim nrog dej - tiv thaiv ntug sealer ua ntej kev teeb tsa.

5. Siv High-Strength Formwork Tie Systems kom raug

Rau cov phab ntsa ntsug thiab kab ntawv, tso siab rau sab nrauv ntoo studs yog tsis tshua muaj txaus los tiv thaiv bowing nyob rau hauv siab nchuav nqi. High- tensile steel daim ntawv ties (xws li Z- khi rods los yog coil ties) yuav tsum tau spaced systematically raws li formwork engineering layouts. Siv cov khoom hnyav- lub luag haujlwm steel walers hla lub nraub qaum ntawm cov ntoo studs faib cov hlua khi nruj sib npaug ntawm ntau lub ntsej muag, tshem tawm qhov chaw kub hauv zos - qhov chaw uas cov nplooj ntawv ib leeg tuaj yeem tawm sab nraud.

Xaus: Ua tiav Flawless Off-Form Finishes

Tiv thaiv formwork bowing tsis yog ib qho teeb meem ntawm koob hmoov; Nws yog ib qho kev qhuab qhia hauv cov qauv ntoo engineering, kev xam qhov tseeb, thiab cov khoom siv nruj heev. Los ntawm kev sib koom ua ke qhov sib txuas kom zoo thiab tswj cov txheej txheem nchuav nrog cov ntawv pov thawj siab - cov ntaub ntawv muaj zog, cov neeg cog lus ua vaj tse tuaj yeem ua kom zoo, Chav Kawm 1 thiab Chav Kawm 2 architectural tiav thaum tshem tawm cov nqi sib tsoo thiab kev kho vaj tse.

Thaum muaj kev nyab xeeb, qhov tseeb, thiab ntau- siv kev ua tau zoo yog qhov tseem ceeb tshaj plaws rau koj cov haujlwm tsim kho, qhia lub Hoobkas- kuajhwm F17 Formply="" engineered="" with="" dense="" hardwood="" veneers="" and="" type="" a-bond="" phenolic="" resin="" is="" the="" ultimate="" insurance="" policy="" against="" panel="" deflection.="" explore="" our="" complete="" range="" of="" certified="" structural="" shuttering="" solutions="" or="" reach="" out="" to="" our="" technical="" engineering="" specialists="" to="" optimize="" your="" formwork="" system="">