Geogrid txheej txheem txheej txheem:
Tshawb xyuas thiab ntxuav cov txheej txheem qis qis → manually nteg cov geogrid → sib tshooj, khi thiab kho → pave rau sab sauv subgrade av → dov → tshuaj xyuas.
Tej yam uas yuav tsum nco ntsoov thaum tso geogrid:
(1) Lub geogrid yog nteg nyob rau hauv ib tug ca qis-bearing txheej raws li lub dav npaj.Sab saum toj txheej ntawm muab tub lim yog dawb ntawm cov khib nyiab uas yuav ua rau lub geogrid puas.Thaum nteg lub geogrid, cov kev taw qhia ntawm siab zog yuav tsum tau perpendicular mus rau lub axis ntawm lub embankment.layout.Lub geogrid yog nteg horizontally.Tighten thiab ncab thaum pw los tiv thaiv wrinkles, distortions los yog potholes.Geogrids yog spliced longitudinally siv txoj kev sib tshooj, thiab qhov sib tshooj dav tsis tsawg dua 20cm.
(2) Tom qab nteg cov geogrid, manually nteg lub sab sauv txheej ntawm muab tub lim thiab xaus lub dov nyob rau hauv lub sij hawm los tiv thaiv lub sij hawm ntev raug rau lub hnub.Tom qab ntawd siv cov tsheb thauj mus los, kev sib tw thiab dov.Mechanical paving thiab dov yog nqa tawm los ntawm ob qhov kawg mus rau qhov chaw, thiab dov yog nqa tawm los ntawm ob qho tag nrho mus rau qhov chaw, thiab cov qib compaction yog tswj kom tau raws li cov qauv kev cai.
(3) Tiv thaiv tag nrho cov tsheb tsim kho thiab kev tsim kho tshuab los ntawm kev taug kev lossis chaw nres tsheb ntawm cov paved geogrid.Tshawb xyuas qhov zoo ntawm geogrid txhua lub sijhawm thaum tsim kho.Yog tias pom muaj kev puas tsuaj xws li tawg, tawg, lossis tsim kua muag, kho nws raws li qhov ntau.los yog hloov.
Geogrid siv txoj kev:
(1) Ua ntej, kom raug nteg tawm txoj kab nqes hav.Txhawm rau kom ntseeg tau tias qhov dav ntawm txoj kab dav dav, txhua sab yog dav los ntawm 0.5m.Tom qab ua kom cov av tawm hauv av, siv 25T vibratory roller rau statically nias nws ob zaug, thiab tom qab ntawd siv 50T vibratory roller los nias nws plaub zaug., tsis sib xws hauv zos dag kev koom tes leveling.
(2) nteg 0.3M tuab nruab nrab (coarse) xuab zeb, thiab tom qab leveling nrog kev sib koom ua ke ntawm cov tshuab, siv 25T vibratory roller los ua qhov siab zoo li qub ob zaug.
(3) Lay geogrid.Thaum tso geogrids, lub hauv qab saum npoo yuav tsum tiaj tus thiab ntom.Feem ntau, lawv yuav tsum tau muab tso ncaj, ncaj, thiab tsis stacked.Lawv yuav tsum tsis txhob twisted los yog twisted.Ob lub geogrids uas nyob ib sab yuav tsum sib tshooj los ntawm 0.2m, thiab cov geogrids yuav tsum tau sib tshooj transversely raws txoj kev.Cov khoom sib txuas yog txuas nrog No. 8 hlau hlau txhua 1 'meter', thiab daim phiaj nteg yog tsau rau hauv av nrog U-shaped ntsia hlau txhua 1.5-2m.
(4) Tom qab thawj txheej ntawm geogrid yog nteg, pib sau lub thib ob txheej ntawm 0.2m tuab nruab nrab (coarse) xuab zeb.Txoj kev yog: thauj cov xuab zeb mus rau qhov chaw tsim kho los ntawm lub tsheb thiab tshem tawm ntawm ib sab ntawm txoj kev, thiab tom qab ntawd thawb nws mus rau pem hauv ntej nrog lub tsheb nrau av., ua ntej sau 0.1m nyob rau hauv 2 meters ntawm ob qhov kawg ntawm roadbed, quav thawj txheej ntawm geogrid, thiab ces sau nrog 0.1m ntawm nruab nrab (coarse) xuab zeb.Nws yog txwv tsis pub sau thiab thawb ob kawg mus rau nruab nrab, thiab txhua yam ntawm cov tshuab raug txwv.Thaum ua haujlwm ntawm geogrid uas tsis tau ntim nrog nruab nrab (coarse) xuab zeb, qhov no yuav xyuas kom meej tias geogrid yog tiaj tus, bulging, thiab tsis muaj wrinkle.Tom qab ob txheej ntawm nruab nrab (coarse) xuab zeb yog tiaj, yuav tsum tau ua ib qho kev ntsuas kab rov tav.Txhawm rau tiv thaiv qhov tsis sib npaug ntawm qhov tuab, siv 25T vibratory cov menyuam rau statically nias nws ob zaug tom qab nws tau leveled.
(5) Txoj kev tsim kho ntawm txheej thib ob ntawm geogrid yog tib yam li thawj txheej.Thaum kawg, sau nws nrog 0.3M nruab nrab (coarse) xuab zeb.Txoj kev filling yog tib yam li thawj txheej.Tom qab zoo li qub nias ob zaug nrog 25T cov menyuam, zoo li qhov no Lub hauv paus kev txhawb nqa tau ua tiav.
(6) Tom qab txheej thib peb ntawm nruab nrab (qhuav) xuab zeb yog dov, nteg ob lub geogrids ntawm ob qho kawg ntawm txoj kab nqes ntev raws txoj kab, sib tshooj los ntawm 0.16m, thiab txuas rau tib txoj kev, thiab tom qab ntawd pib ua haujlwm hauv av.Thaum tso geogrids rau kev tiv thaiv txoj kab nqes, nws yog ib qho tsim nyog los ntsuas cov kab ntug ntawm txhua txheej, thiab xyuas kom meej tias cov geogrids raug faus 0.10m hauv txoj kab nqes tom qab kho txoj kab nqes ntawm txhua sab.
(7) Rau txhua ob txheej ntawm cov av uas muaj txoj kab nqes geogrid, uas yog, thaum lub thickness yog 0.8m, ib txheej ntawm geogrid yuav tsum tau muab tso rau ntawm ob sab, thiab lwm yam, mus txog rau thaum nws yog nteg nyob rau hauv lub saum npoo av. txoj kev lub xub pwg nyom.
(8) Tom qab txoj kab nqes puv lawm, txoj kab nqes yuav tsum tau kho raws sij hawm, thiab kev tiv thaiv cov pob zeb qhuav yuav tsum tau nqa tawm ntawm ko taw ntawm txoj kab nqes.Ntxiv nrog rau kev nthuav dav txoj kev taug kev los ntawm 0.3M ntawm txhua sab, 1.5% ntawm qhov kev sib hais yuav tsum tau tseg.
Post lub sij hawm: Sep-14-2023