Kev tsim kho thiab kev siv cov khoom siv fiber ntau ntxiv hauv cov qauv tsim tshiab
Nyob rau hauv xyoo tas los no, kev tshawb fawb thiab kev siv cov ntaub ntawv FRP hauv cov qauv tshiab kuj tau dhau los ua qhov kev tshawb fawb hotspot nyob rau hauv thaj tsam ntawm civil engineering. Vim tias FRP txawv ntawm lub cev thiab lub zog ntawm cov khoom siv hauv tsev ib txwm muaj, nws muaj cov txiaj ntsig zoo thiab chav rau kev txhim kho thaum siv cov qauv tshiab. Yav dhau los"FRP Kev Tshawb Fawb Txog Kev Tshawb Fawb Part 1" tsab xov xwm hais tias cov txheej txheem tseem ceeb ntawm FRP cov ntaub ntawv suav nrog braided, stranded, thiab pultruded, ntawm cov pultruded yog txoj kev ntau dua. Muab faib los ntawm cov duab, pas nrig-shaped linear FRP ribs tsim los ntawm pultrusion feem ntau hu ua tav los yog tuav, nrog rau cov npoo puag ncig thiab nto deformed tav, uas yog nruj thiab nyuaj rau khoov; twist lub pob fiber ntau rau hauv twists Lub FRP ribs nyob rau hauv daim ntawv ntawm cov hlua sib txuas yog hu ua ropes lossis strands. Lawv yog ib leeg los yog ntau txoj hlua, nrog qis rigidity, thiab tuaj yeem khoov thiab mob rau hauv yob. Pom zoo siv Pulwell iav reinforcement khoom, patented technology, zoo yog guaranteed!
Pulwell' tus kws tshaj lij FRP tav txoj hauv kev(Daim duab 1)
Thaum xyoo 1960, Asmeskas Marshall-Vega lub tuam txhab tsim GFRP tuav, uas tau siv los daws cov ntsev ntsev ntawm cov pob zeb ua vaj tse nyob hauv thaj chaw sab nraud thiab thaj chaw txias. Pib xyoo 1980s, FRP tuav tau maj mam tau siv dav hauv cov qauv nrog kev ua haujlwm tshwj xeeb los hloov cov hlau tuav. Piv txwv li, cov tsev uas muaj cov khoom siv kho mob sib nqus resonance thiab seawalls, industrial Hoobkas vaj huam sib luag vaj huam sib luag thiab lwm cov qauv uas raug rau cov tshuaj lom neeg hnyav heev. Kev taug qab thiab kev saib xyuas rau ntau tshaj 20 xyoo pom tias FRP bar-pob zeb yog nyob rau hauv kev ua haujlwm zoo, thiab kev lag luam kev lag luam ntawm tag nrho lub neej voj voog yog zoo dua li ntawm cov pob zeb ua vaj tse uas nquag tu thiab kho dua tshiab. Geotechnical engineering kuj yog ib qho tseem ceeb ntawm daim ntawv thov ntawm FRP qhov cuab lub zog. Nws tau raug siv hauv engineering xws li khaws cov phab ntsa, lub hauv paus thauj tog rau nkoj thiab subway caissons uas hloov ntawm qhuav thiab ntub dej vim kev hloov tidal (Daim duab 2).
Fig.2 FRP reinforcement nyob rau hauv cov qauv es tsis txhob hlau
Lwm daim ntawv ntawm kev siv FRP tendons thiab strands yog prestressed pob zeb ua, uas yog tam sim no feem ntau siv nyob rau hauv choj engineering. Lub teb chaws Yelemees tau tsim lub ntiaj teb' thawj qhov kev nyuaj siab ua ntej txoj kev choj nrog iav fiber reinforcement hauv Düsseldorf xyoo 1986-Ulenberg Strass Choj. Tus choj siv 59 cov khoom sib xyaw ua ke hauv cov pob zeb superstructure, txhua qhov bar yog tsim los ntawm 19 alkali-dawb iav fiber ntau (E)-qib tuav nrog txoj kab uas hla ntawm 7.5 hli, thiab tag nrho ntawm 4 t GFRP yog siv rau tag nrho tus choj. . Nyob rau hauv 1991, ib tug prestressed qhob choj nrog ib tug tag nrho ntev ntawm 80 m tau tsim nyob rau hauv Ludwigshafen nrog CFRP tendons rau ib feem prestress. FRP reinforcement, FRP reinforcement-pob zeb, FRP yeeb nkab composite Cheebtsam, thiab lwm yam, yog tam sim no cov qauv tsim tseem ceeb tshaj plaws rau FRP cov ntaub ntawv nyob rau hauv lub tshav pob ntawm civil engineering. Pulwell muaj 25 xyoo ntawm FRP txhawb kev tsim cov khoom sib xyaw ua ke, thiab muaj ntau qhov kev tsim vaj tsev thiab kev tsim kho.
FRP daim phiaj-pob zeb sib xyaw qauv
FRP daim phiaj yog ib daim phiaj tag nrho tsim los ntawm impregnating high-performance nruam fibers xws li carbon fiber thiab iav fiber nyob rau hauv ib tug resin nrog zoo corrosion kuj. Tom qab cov fiber ntau yog infiltrated thiab kho los ntawm cov resin, nws muaj zog dua thiab rigidity, uas txawv ntawm qhov yooj ntawm weaving thiab sib sau. Grille (Daim duab 3).
FRP daim phiaj yog ib qho yooj yim mus use, yooj yim thiab ceev los tsim. Nws tuaj yeem hloov cov hlau tuav hauv cov qauv pob zeb tshiab. Nws yog tshwj xeeb tshaj yog haum rau phab ntsa thiab slabs. Nws dhau los ua cov khoom siv yooj yim thaum siv nyob rau hauv cov xwm txheej tshwj xeeb thiab tuaj yeem tsim cov txheej txheem tshiab. Nws tsis yog ib qho ntxiv rau cov ntaub ntawv FRP ib txwm muaj.
Fig.3 CFRP daim phiaj
Daim ntawv thov engineering ntawm FRP daim phiaj cov ntaub ntawv tau pib hauv xyoo 1980s. Nyiv pib siv iav fiber ntau daim phiaj rau kev txhim kho cov qauv, thiab tom qab ntawd carbon fiber daim phiaj tau tsim sai heev, thiab cov ntawv thov engineering tau nce sai heev. Nws tau dav siv nyob rau hauv tunnels thiab dav hlau. Txoj kev khiav, aprons, txuas hniav, txoj kev loj, vaj tse, kwj deg thiab ntau lwm yam tshiab kev tsim kho thiab kev txhawb nqa.
Piv txwv li, nyob rau hauv kev tsim kho ntawm underground lug, tunnel shields, thiab lwm yam., FRP grids yuav siv tau raws li lub zog txhawb zog thiab pob zeb ua ib tug underground nruam phab ntsa. Thaum kev tsim kho kev lag luam ntawm cov ntaub thaiv npog tshuab ntsib cov phab ntsa txuas ntxiv, nws tuaj yeem txiav ncaj qha. Nws tsis tas yuav tsum tau txiav manually zoo li thaum ntsib cov phab ntsa pob zeb, uas txuag tau ntau ntawm cov neeg ua haujlwm thiab lub sijhawm, thiab txo cov kev pheej hmoo ntawm kev tsim kho (Daim duab 4).
Fig.4 CFRP daim phiaj siv nyob rau hauv tunnel engineering
Tsis tas li ntawd, FRP mesh yog lub teeb hauv qhov hnyav thiab qhov yooj yim nyias, yooj yim rau kev ua ntau yam duab, thiab tuaj yeem siv los ua cov khoom siv tseem ceeb rau cov khoom siv prefabricated, thiab tshwj xeeb tshaj yog tsim rau kev tsim cov khoom siv prefabricated xws li daim hlau, tubes, thiab cov txheej txheem enclosure. Tam sim no, ntsig txog FRP prefabricated cov khoom tau raug txhawb nqa thiab siv.
CFRP daim phiaj precast khoom
FRP yeeb nkab-pob zeb sib xyaw qauv
FRP yeeb nkab yog lub plhaub laminated nrog ntau qhov kev taw qhia fiber ntau tso. Nws yog tsim los ntawm txoj kev winding, centrifugal casting txoj kev thiab pultrusion txoj kev. Cov fiber ntau tuaj yeem muab tso rau hauv qhov kev taw qhia hoop lossis ± α° nrog lub hoop kev taw qhia (Daim duab 5).
Muab cov pob zeb tso rau hauv FRP cov kav dej tuaj yeem tsim FRP yeeb nkab-pob zeb sib xyaw ua ke, zoo ib yam li steel tube pob zeb, FRP yeeb nkab-pob zeb feem ntau muaj ob hom: FRP puag ncig yeeb nkab ua vaj tse thiab FRP square yeeb nkab ua vaj tse.
Fig.5 FRP tub
FRP yeeb nkab-pob zeb muaj superior seismic kev ua tau zoo. Nws tuaj yeem tsim tau yam tsis muaj lossis txo qhov kev txhawb nqa, thiab tsis tas yuav tsum muaj formwork thaum lub sij hawm tsim kho. Cov yeeb nkab yog lub teeb nyob rau hauv qhov zoo thiab yooj yim thiab ceev rau kev tsim, uas tuaj yeem txo qhov kev ua haujlwm thiab tus nqi ntawm kev tsim kho. FRP yeeb nkab-pob zeb yog corrosion-resistant thiab tuaj yeem siv tau ntev hauv dej. Nws yog tshwj xeeb tshaj yog haum rau siv nyob rau hauv hydraulic lug thiab marine engineering. Nws cov nqi kho mob tsawg, thiab nws cov txiaj ntsig kev lag luam mus sij hawm ntev muaj qhov zoo dua (Daim duab 6).
Fig.6 FRP yeeb nkab pawg hauv kev tsim kho
FRP Cheebtsam thiab cov qauv
Ntxiv nrog rau kev siv ua ke nrog cov pob zeb, FRP cov ntaub ntawv tseem tuaj yeem siv nws tus kheej los ua cov tswv cuab, lossis tseem tsim cov qauv FRP tag nrho.
FRP lub ru tsev
Nyob rau xyoo 1960, lub tebchaws United Kingdom tau pib tsim GFRP cov qauv ru tsev, uas tau xa mus rau Middle East thiab North Africa rau kev tsim kho thiab siv. Xyoo 1968, lub tsev dome siv GFRP sandwich panels thiab aluminium skeletons tau tsim hauv Bengazhi, Libya; Xyoo 1972, Alian Chieftain Dubai International Tshav Dav Hlau siv GFRP lub kaus ru tsev. Hauv xyoo 1970 thiab 1980s, qee lub tsev hauv tebchaws Askiv tau siv GFRP ua cov kabmob lossis cov kabmob ib nrab ntawm cov kabmob uas tsis yog kab thiab kab. Xyoo 1974, thawj lub tsev tag nrho tau ua tiav nyob rau hauv Lancashire, England, nrog cov qauv spatial tsim los ntawm peb tog pyramids.
Xyoo 1994, Bond Mill choj tsim hauv tebchaws United Kingdom tau tsim los ntawm GFRP pultruded profiles. Nws yog ib qho chaw txav mus los uas tuaj yeem hla tau 40-tuj tsheb. Xyoo 1996, Russell, Kansas, Tebchaws USA, txhim tsa thawj txoj kev choj siv FRP lawj slabs. Nyob rau hauv tsawg tshaj li kaum xyoo txij thaum ntawd los, muaj kaum ob lub me me thiab nruab nrab choj siv FRP decks hauv Tebchaws Meskas.
Fig.7 FRP choj lawj nyob rau hauv kev tsim kho
Tag nrho cov qauv FRP kuj tau siv rau hauv choj engineering. Lub neej theoretical ntawm tus qauv tuaj yeem ncav cuag ntau pua xyoo, thiab nws tuaj yeem khaws cia dawb thaum ua haujlwm. Nws tau txais txiaj ntsig zoo hauv Tebchaws Europe hauv xyoo tas los no. Tam sim no, ntau pua lub tsev me me FRP tau tsim. Footbridge thiab toj roob hauv pes choj. Piv txwv li, lub ntiaj teb thawj tus qauv FRP tus choj-Aberfeldy Pedestrian Choj nyob rau hauv Scotland, nrog rau tag nrho ntev ntawm 113 m thiab ib tug loj span ntawm 63 m, yog ib tug cable-nyob system nrog ob yees thiab ob lub dav hlau cable. Tus choj yees, kab teeb, thiab decks Cov railings thiab railings yog tag nrho ua los ntawm pultruded GFRP profiles ua ntej tsim nyob rau hauv lub Hoobkas. Cov choj cables yog ua los ntawm Kevlar aramid fiber ntau. Kev teeb tsa tus choj tag nrho tsuas yog siv sijhawm 6 lub lis piam. Tebchaws Asmeskas, Nyij Pooj, Tuam Tshoj thiab lwm lub tebchaws tau ua tiav kev ua tiav ntawm FRP cov qauv kev taug kev txuas ntxiv.
Kev thov ntawm FRP hauv Dej Hiav Txwv Engineering
Hauv lub tswv yim ntawm kev txhim kho cov peev txheej marine, kev tsim kho cov kev thauj mus los hauv hiav txwv muaj ntau qhov chaw xws li chaw nres nkoj thiab wharfs, marine platforms, kob thiab reef engineering kev tsim kho, thiab cov choj hla hiav txwv. Tam sim no, feem ntau ntawm cov chaw no yog cov pob zeb ua vaj tse thiab cov qauv hlau. Ib puag ncig yog qhov hnyav heev corrosive ib puag ncig, thiab kev ua haujlwm ntev ntawm cov tsoos pob zeb ua vaj tse thiab cov qauv hlau ntsib kev sim hnyav hauv qhov chaw no. Xav txog ntau yam kev xav tau ntawm kev tsim kho marine engineering, cov ntaub ntawv tsim nyog yuav tsum muaj cov khoom zoo xws li lub zog siab, tsis tshua muaj siab, siab ntev, yooj yim tsim, yooj yim siv, thiab lwm yam, thiab FRP cov ntaub ntawv tau raug pov thawj tias muaj cov saum toj no los ntawm ntau tus neeg. ntawm kev tshawb fawb thiab engineering applications. Cov kev xav tau ntawm kev ua tau zoo yog qhov kev xaiv zoo los daws ntau yam teeb meem hauv cov khoom siv ntev thiab kev tsim kho tshuab hauv kev tsim kho marine engineering. Tsis tas li ntawd, rau kev tsim kho ntawm tej thaj chaw deb Islands tuaj thiab reefs, FRP cov ntaub ntawv kuj siv tau nyob rau hauv ua ke nrog nrog seawater thiab hiav txwv xuab zeb (coral xuab zeb) pob zeb los ua ib tug FRP-seawater hiav txwv xuab zeb qhob composite qauv, uas fundamentally daws cov teeb meem ntawm tau txais cov ntaub ntawv. ntawm qhov chaw thiab txo qis kev thauj mus los ntawm qhov project. Tus nqi thiab kev tsim kho.
Cov lus xaus
Daim ntawv thov kev tshawb fawb ntawm FRP hauv civil engineering tam sim no yog ib qho kev kawm kub hauv kev lag luam engineering. Ntxiv rau qhov kev txhawb nqa ntawm cov qauv uas twb muaj lawm thiab qee qhov kev siv yooj yim, FRP cov ntaub ntawv muaj ntau daim ntawv thov dav. Pulwell tau ua raws li kev lag luam xav tau, peb txuas ntxiv txhim kho thiab tshawb fawb cov ntawv thov FRP tshiab los tsim cov khoom zoo sib xws. Raws li ntau lub teb chaws muaj cov kev xav tau siab dua thiab siab dua rau kev nyab xeeb thiab kev pabcuam lub neej ntawm cov qauv hauv kev tsim kho cov vaj tsev loj thiab cov tsev nyob hauv ntau qhov kev lag luam, qhov kev thov rau cov khoom siv hauv tsev tshiab uas muaj txiaj ntsig zoo uas sawv cev los ntawm FRP tau dhau los sai heev. Kuv ntseeg tias yav tom ntej, kev thov ntawm FRP hauv cov qauv tshiab yuav dhau los ua kev lag luam tawm tshiab nrog lub zog loj hlob thiab muaj peev xwm ua lag luam loj.
Yog xav paub ntxiv txog FRP cov ntaub ntawv, thov hu rau peb ntawm info@gfrp-china.com.
