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1, Ndeapi mabasa emhando dzakasiyana dze geogrids
Sechinhu chinowanzo shandiswa mukugadzirwa kwemigwagwa, geogrids inoita basa rakakosha mukuvaka migwagwa.Panguva imwecheteyo, geogrids yakakamurwawo mumhando dzakasiyana.Nhasi tichasuma basa remhando dzakasiyana dze geogrids.
Kune marudzi mana ema geogrids.Ngativazivise:
1. Unidirectional epurasitiki geogrid basa:
Uniaxial tensile geogrid ndeye yakakwirira-simba geosynthetic zvinhu.Inoshandiswa zvakanyanya muembankment, tunnel, wharf, mugwagwa mukuru, njanji, kuvaka uye mamwe minda.Mashandisirwo ayo makuru ndeaya anotevera: simbisa dhigirii, kugovera zvinobudirira mutoro wekupararira, kuvandudza kugadzikana uye kutakura kugona kweiyo subgrade, uye kuwedzera hupenyu hwebasa.Inogona kutsungirira yakakura alternating mutoro.Dzivirira subgrade deformation uye kuputika kunokonzerwa nekurasikirwa kwezvinhu zvepasi.Inogona kuvandudza kugona kwekuzvitakura kwekuzadza kuseri kwemadziro ekuchengetedza, kuderedza kudzvanywa kwepasi kwemadziro ekuchengetedza, kuchengetedza mari, kuwedzera hupenyu hwesevhisi, uye kuderedza mari yekugadzirisa.Yakasanganiswa neshotcrete uye anchor kongiri nzira yekuvaka, kugadzirisa kwemateru hakugone chete kuchengetedza 30% - 50% yekudyara, asiwo kupfupisa nguva yekuvaka nekanopfuura kaviri.Kuwedzera ma geogrids kune subgrade uye pamusoro pedenga remugwagwa mukuru kunogona kuderedza kutsauka, kuderedza kutsvedza, kunonoka kuitika kwekuputika nguva ne 3-9 nguva, uye kuderedza kukora kweiyo dhizaini dhizaini ne36%.Inoshanda kune marudzi ese evhu, pasina kudiwa kwezvinhu kubva kune dzimwe nzvimbo, uye inochengetedza basa nenguva.Kuvaka kuri nyore uye nekukurumidza, izvo zvinogona kuderedza zvakanyanya mutengo wekuvaka.Kuwedzerwa kwakabatana kwegeogrid, kuvimbiswa kwehutano.

2. Basa renzira mbiri dzepurasitiki geogrid:
Wedzera kutakura kugona kwenzira (pasi) hwaro uye kurebesa hupenyu hwebasa remugwagwa (pasi) hwaro.Dzivirira kudonha kana kutsemuka kwemugwagwa (pasi) pamusoro uye chengetedza pasi rakanaka uye rakatsvinda.Kuvaka kwakaringana, kuchengetedza nguva, kuchengetedza basa, kupfupisa nguva yekuvaka uye kuderedza mari yekugadzirisa.Dzivirira gomba kuti risatsemuka.Simbisa kutsetseka kwevhu uye kudzivirira kurasikirwa kwemvura nevhu.Deredza kukora kwecushion uye chengetedza mutengo.Tsigira nzvimbo yakasvibira yakasvibira yemeti yekudyara uswa pamateru.Inogona kutsiva mesh yesimbi uye kushandiswa padenga renhema mesh mumugodhi wemarasha.
3. Basa resimbi-plastiki geogrid:
Inonyanya kushandiswa muminda yevhu rakapfava nheyo yekusimbisa, kuchengetedza madziro uye pavement crack resistance engineering yemigwagwa mikuru, njanji, abutments, nzira, wharves, revetments, madhamu, slag yadhi, nezvimwe.
4. Basa regirazi fiber geogrid:
Iyo yekare asphalt concrete pavement inosimbiswa kusimbisa asphalt pamusoro uye kudzivirira zvirwere.Iyo simende yekongiri pavement inovakwa patsva kuita musanganiswa wepavement kudzivirira kukaruka kwekuratidzira kunokonzerwa neplate shrinkage.Kuwedzera kwemugwagwa uye kuvaka patsva kunoshanda, kudzivirira kutsemuka kunokonzerwa nejunction nyowani neyekare uye kusawirirana kwekugara.Iyo yekusimbisa kurapwa kwevhu rakapfava nheyo inokodzera kuparadzaniswa kwemvura uye kubatanidzwa kwevhu rakapfava, kunyatsogadzirisa kugadzirisa, yunifomu yekushushikana kugovera, uye kuwedzera simba rose reiyo subgrade.Iyo semi-yakaomesesa nheyo yemugwagwa mutsva inoburitsa shrinkage kuputika, uye kusimbiswa kunoshandiswa kudzivirira kuputika kwepavhu kunokonzerwa nekuratidzwa kwenheyo kuputika.

2, Yakanaka sei iyo anti-kuneta-kupaza kuita kwegeogrid
Geogrid inoshandisa yakakwirira-simba repolyester fiber kana polypropylene faibha seyakabikwa, inotora warp knitting directional chimiro, uye warp uye weft warn mujira hadzina kukotama, uye mharadzano inosungwa uye inosanganiswa ne-high-simba fiber filament kuti iite yakasimba yekusunga poindi, ichipa kutamba kwakazara kune yayo mechanic properties.Saka unoziva here kunaka kwayo kuneta kwayo crack resistance?
Mhedzisiro huru yeasphalt yakafukidzwa pane yekare simende kongiri pavement ndeyekuvandudza basa rekushandisa repavhu, asi ine zvishoma mupiro kune inotakura mhedzisiro.Iyo yakaomeswa kongiri pavement pasi pekufukidzira ichiri kuita yakakosha kubereka.Iyo asphalt yakafukidzwa pane yekare asphalt kongiri pavement yakasiyana.Iyo asphalt yakafukidzirwa ichatakura mutoro pamwe chete neyekare asphalt kongiri pavement.Naizvozvo, iyo asphalt yakafukidzwa pane asphalt kongiri pavement haingoratidzi kufungidzira kutsemuka, asiwo kuratidza kuneta kutsemuka nekuda kwekuita kwenguva refu kwemutoro.Ngationgororei mamiriro ekurodha easphalt akafukidzira pane yekare asphalt kongiri pavement: nekuti asphalt yakafukidzwa inochinjika pamusoro pedenga ine pfuma yakafanana neye asphalt yakavharidzirwa, kana yaiswa pamutoro wemutoro, iyo nzira ichave nekutsauka.Iyo asphalt yakavharidzirwa iyo inobata vhiri zvakananga iri pasi pekumanikidzwa, uye pamusoro payo pasi pesimba rekusimba munzvimbo iri kunze kwegumbo rekutakura margin.Nemhaka yekuti masimba emasimba enzvimbo mbiri dzekumanikidzika akasiyana uye ari pedyo kune mumwe nemumwe, zviri nyore kukuvadzwa pakusangana kwenzvimbo mbiri dzekumanikidzika, kureva kushanduka kamwe kamwe kwesimba.Pasi pemugumisiro wemutoro wenguva refu, kuneta kuputika kunoitika.
Geogrid inogona kuparadzira iri pamusoro pekumanikidza kushushikana uye kushushikana kwekushushikana muasphalt yakavharika kuti iite buffer zone pakati penzvimbo mbiri dzekushushikana, uko kushushikana kunoshanduka zvishoma nezvishoma kwete nekuerekana, kuderedza kukuvadzwa kwekushushikana nekukurumidza kuchinja kune asphalt pamusoro.Iyo yakaderera elongation yegirazi fiber geogrid inoderedza kutsauka kweiyo nzira uye inovimbisa kuti iyo nzira haizove neshanduko deformation.
Unidirectional geogrid inoburitswa mumapepa matete nepolymer (polypropylene PP kana polyethylene HDPE), yobva yaroverwa mugomba renguva dzose, uye yotambanudzwa kureba.Mukuita uku, iyo polymer iri mumutsara mamiriro, ichigadzira refu elliptical network chimiro nekugovera kwakafanana uye yakakwirira node simba.
Unidirectional grid imhando yepamusoro-yakasimba geosynthetic zvinhu, iyo inogona kukamurwa kuita unidirectional polypropylene grid uye unidirectional polyethylene grid.
Uniaxial tensile geogrid imhando yepamusoro-yakasimba geotextile ine yakakwira molecular polymer seyakanyanya mbishi zvinhu, inowedzerwa nemamwe anti ultraviolet uye anti-kuchembera ejenti.Mushure mekusagadzikana kwe uniaxial, iwo ekutanga akagoverwa cheni mamorekuru anodzoserwa kune mutsara mamiriro, uye obva awedzerwa mundiro yakatetepa, ichikanganisa yakajairika mesh, yobva yatambanudzwa kureba.Material Science.
Mukuita uku, iyo polymer inotungamirwa neyakatsetseka nyika, ichigadzira refu elliptical network chimiro nekugovera kwakafanana uye yakakwirira node simba.Ichi chimiro chine yakanyanya kusimba simba uye tensile modulus.Kusimba kwesimba ndeye 100-200Mpa, iri padyo nechiyero cheyakaderera kabhoni simbi, uye iri nani pane yechinyakare kana iripo yekusimbisa zvinhu.
Kunyanya, chigadzirwa ichi chine yepamusoro-soro yekutanga nhanho yepasirese (kurebesa kwe2% - 5%) kusimba kwesimba uye kusimba modulus.Inopa hurongwa hwakanaka hwekuzvipira kwevhu uye kupararira.Ichi chigadzirwa chine simba rakanyanya kusimba (> 150Mpa) uye inokodzera marudzi ese evhu.Icho chinhu chinoshandiswa zvakanyanya kusimbisa zvinhu panguva ino.Hunhu hwayo hukuru ndeyekusimba kwesimba, kuita kwakanaka kunofamba, kuvaka kuri nyore uye mutengo wakaderera.