Kev taw qhia kev teeb tsa ntawm Biaxial Geogrids rau Kev Txhim Kho ntawm Kev Ua Haujlwm Hauv Ntiaj Teb
Kev taw qhia kev teeb tsa ntawm Biaxial Geogrids rau Kev Txhim Kho ntawm Kev Ua Haujlwm Hauv Ntiaj Teb
Kev npaj ntawm sub-base nto
Ua ntej txhim kho lub geogrid, lub sub-base nto yuav tsum tau npaj raws li qhov chaw thiab qhov siab thiab yuav tsum tau compacted.Ntuj cag residues, pob zeb thiab lwm yam khoom uas yuav ua rau cov khoom geosynthetic puas ntsoog los yog tej zaum yuav muaj kev cuam tshuam tsis zoo rau nws cov hauj lwm yuav tsum tau muab tshem tawm. los ntawm lub txaj ua ntej.Qhov ib txwm xav tau ntawm kev npaj ntawm sub-base nto yuav tsum tau ua raws li, ib yam nkaus.
Cov kev taw qhia kev teeb tsa tau teev nyob rau hauv cov ntaub ntawv npaj.Qhov biaxial geogrids, tuaj yeem sib npaug sib npaug ntawm qhov ntev thiab sab nraud.
Cov nplooj ntawv geogrid yuav tsum tau muab ntsia kom du thiab, yog tias tsim nyog, yuav tsum hnyav los ntawm tes siv cov khoom ntim kom tsis txhob plam lossis raug cua tshuab.
Cov geogrids yuav tsum tau muab ntsia tsis tau overlapping nyob rau hauv lub strain kev taw qhia nyob rau hauv kev txhawb kev tsim kho los yog nyob rau hauv embankments.Yog hais tias qhov no yog unavoidable, cais validation ntawm overlapping yuav tsum tau muab.
Thaum cuam tshuam nrog kev txhawb nqa ntawm cov txheej txheem tsis sib xws hauv kev tsim kho, qhov sib tshooj yuav tsum yog tsawg kawg 50cm nyob rau hauv ib txwm muaj xwm txheej thiab tsawg kawg yog 1.00m nyob rau hauv txhua qhov kev taw qhia yog tias lub subsurface yog mos heev.
Kev txhim kho ntawm cov khoom ntim
Lub granular faib ntawm cov ntxhia hauv cov khoom sib xyaw hauv cov khoom siv txhawb nqa yuav tsum tau ua raws li cov geogrid reinforcement.High cov ntsiab lus yuav tsum tau xav, tshwj xeeb tshaj yog nyob rau hauv cohesive xau, uas tej zaum yuav fluctuate heev, nyob ntawm seb lub caij.<0.063mm should be restricted to no more than 5% of the weight,in order to enable smooth water drainage without significant pressure.
Qhov kev xav tau no yuav tsum raug txiav txim siab txog qib txawm tias nruj dua thaum cuam tshuam nrog cov khoom siv rov ua dua tshiab thiab rov ua dua cov khoom siv sib xyaw ua ke, qhov kev faib ua feem ntawm cov khoom zoo.<0.063mm must be considerably less than 5% of the total weight.
Ib zaug ntsia, cov geogrids yuav tsum tau tiv thaiv los ntawm kev tsav ncaj qha rau.Ib yam tsawg kawg yog 20 mus rau 30 cm tuab txheej ntawm cov khoom txhawb nqa yuav tsum tau ntsia thiab compacted nyob rau hauv pem hauv ntej-spead txoj kev ua ntej lub nto yuav raug mus rau lub tsheb. thawj txheej yuav tsum nyob rau hauv qhov no yuav tsum ua kom haum rau cov granular muaj pes tsawg leeg ntawm cov khoom txhawb nqa txheej thiab tej zaum yuav yog li ntawd loj dua.
Compaction thiab compaction tswj
Txhawm rau kom ntseeg tau tias cov txheej txheem txhawb nqa tuaj yeem yooj yim compressed thiab tiv thaiv kev sib tov los ntawm kev tawg.cov dej hauv cov txheej txheem txhawb nqa yuav tsum tau ua kom zoo.Ib qho kev sib xyaw ua ke ntawm thawj qhov zoo li qub ua raws li cov txheej txheem dov dynamic tau ua pov thawj tias yog qhov zoo. Txhawm rau kom ntseeg tau tias qhov kev txhawb zog ntawm cov geogrid tau qhib kom sai li sai tau, nws raug nquahu kom pib cov txheej txheem compaction nyob rau hauv nruab nrab ntawm cov qauv thiab tom qab ntawd ua haujlwm sab nraud rau cov npoo.
Thaum twg ua tau, qhov zaus ntawm cov khoom siv compaction yuav tsum nyob rau hauv qhov ntau ntawm cov yam ntxwv zaus ntawm sub-base / sub-structure.
Lub thickness ntawm tus neeg sau cov khaubncaws sab nraud povtseg yuav tsum nyob rau hauv txoj kab nrog sub-base / sub-structure, cov khoom siv thiab cov khoom siv rau compaction.
Kev tsav tsheb dhau ntawm cov txheej txheem kev teeb tsa thiab compacted txhawb nqa yog ib txoj hauv kev zoo los saib xyuas thiab paub meej tias cov txheej txheem lod-bearing muaj peev xwm.Qhov kev soj ntsuam ntawm deformation ntawm cov txheej txheej hauv av hauv cov cheeb tsam uas lub log load dhau, thiab qhov tob ntawm cov lem. ua kom muaj qhov pib, kev ntsuam xyuas ntxhib ntawm lub peev xwm ntawm kev tsim kho thiab kev ua haujlwm ntawm geogrid nyob rau hauv kev vam khom rau sub-base / sub-structure.
Ib qho kev hloov pauv ntawm qhov tob ntawm txoj kev taug txoj kev yog qhov qhia txog qhov zoo ntawm kev teeb tsa mus txog qhov ntawd.Pumping nyob rau hauv lub load qhia cov tshuaj tiv thaiv ntawm sub-base / sub-structure.In xws li, ib tug series ntawm ntxiv phaj bearing. los yog CBR kev xeem tso cai rau kev soj ntsuam thiab kev soj ntsuam zoo.
