Yuav ua li cas los tsim geogrids ntawm high-qib highways thiab tshav dav hlau pavements?

xov xwm

Yuav ua li cas los tsim geogrids ntawm high-qib highways thiab tshav dav hlau pavements?

Tam sim no, muaj ob hom kev siv geogrids: nrog thiab tsis muaj tus kheej nplaum nplaum.Cov neeg uas muaj tus kheej nplaum nplaum tuaj yeem muab tso ncaj qha rau ntawm lub hauv paus txheej, thaum cov uas tsis muaj tus nplaum nplaum yog feem ntau tsau nrog rau tes.

Qhov chaw tsim kho:

Nws yuav tsum tau compact, theem, thiab tshem tawm ntse protrusions.Daim phiaj tso;Nyob rau ntawm qhov chaw tiaj tus thiab compacted, lub ntsiab kev nyuaj siab (ntev) ntawm cov ntsia hlau thiab paving kab sib chaws yuav tsum yog perpendicular mus rau cov kev taw qhia ntawm embankment axis.Lub nteg yuav tsum du, tsis muaj wrinkles, thiab yuav tsum tau tensioned ntau li ntau tau.Kho nrog dowels thiab lub ntiaj teb thiab pob zeb ballast, lub ntsiab kev ntxhov siab ntawm daim phiaj nteg yuav tsum zoo dua yog tag nrho ntev yam tsis muaj pob qij txha, thiab kev sib txuas ntawm qhov dav tuaj yeem ua manually khi thiab sib tshooj, nrog qhov sib tshooj dav tsis pub tsawg dua 10cm.Yog tias daim phiaj tau teeb tsa ntau tshaj ob txheej, cov pob qij txha ntawm cov txheej yuav tsum tau staggered.Tom qab tso ib qho chaw loj, tag nrho cov flatness yuav tsum tau kho.Tom qab npog ib txheej ntawm cov av, ua ntej dov, daim phiaj yuav tsum tau tensioned dua siv phau ntawv los yog tshuab cuab yeej, nrog lub zog sib xws, kom cov kab sib chaws nyob rau hauv ib tug ncaj kev nyuaj siab nyob rau hauv cov av.

Kev xaiv ntawm filler:

Cov muab tub lim yuav tsum raug xaiv raws li qhov yuav tsum tau ua.Kev xyaum tau ua pov thawj tias tsuas yog cov av khov, cov av swampy, cov khib nyiab hauv tsev, cov av chalk, thiab diatomite, tag nrho cov ntawm lawv tuaj yeem siv los ua cov khoom siv hauv kev, tab sis cov av gravel thiab xuab zeb av muaj cov khoom ruaj khov thiab muaj kev cuam tshuam me ntsis ntawm cov dej. xav tau, yog li lawv yuav tsum tau xaiv qhov zoo dua.Qhov luaj li cas ntawm cov muab tub lim yuav tsum tsis txhob ntau tshaj 15cm, thiab yuav tsum tau them nyiaj mloog mus rau kev tswj cov grading ntawm lub muab tub lim kom paub meej lub compaction hnyav.

Spreading thiab compaction ntawm cov ntaub ntawv sau:

Tom qab cov kab sib chaws tau muab tso rau thiab tso, nws yuav tsum tau ntim thiab npog raws sijhawm.Lub sij hawm raug yuav tsum tsis pub tshaj 48 teev.Cov txheej txheem ntws ntawm kev tso thiab backfilling tuaj yeem raug saws.Pave txoj kev fillers ntawm ob qho kawg ntawm lub puam ua ntej, kho daim phiaj, thiab tom qab ntawd nce mus rau nruab nrab.

Qhov kev sib tw dov yog los ntawm ob sab mus rau nruab nrab.Thaum lub sij hawm dov, cov menyuam yuav tsum tsis txhob cuam tshuam ncaj qha nrog cov khoom siv txhawb nqa, thiab cov tsheb feem ntau tsis raug tso cai tsav tsheb ntawm lub cev tsis muaj zog kom tsis txhob cuam tshuam cov khoom siv ntxiv.Cov txheej txheem compaction yog 20-30cm.Compaction yuav tsum ua kom tau raws li cov qauv tsim, uas tseem yog tus yuam sij rau kev ua tiav ntawm kev txhim kho av ntxiv.

Waterproof thiab dej ntsuas ntsuas:

Hauv kev txhim kho av engineering, nws yog ib qho tsim nyog los ua txoj haujlwm zoo ntawm kev kho cov dej hauv thiab sab nraud;Ua haujlwm zoo ntawm kev tiv thaiv ko taw thiab tiv thaiv yaig;Lim thiab ntsuas dej yuav tsum tau muab rau hauv av, thiab geotextile yuav tsum tau muab yog tias tsim nyog.

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Post lub sij hawm: Feb-21-2023