Geogrid yapulasitiki
Kufotokozera Kwachidule:
- Amapangidwa makamaka ndi zinthu za polima zokhala ndi mamolekyulu ambiri monga polypropylene (PP) kapena polyethylene (PE). Poyang'ana, ili ndi kapangidwe kofanana ndi gridi. Kapangidwe ka gridi kameneka kamapangidwa kudzera mu njira zinazake zopangira. Kawirikawiri, zinthu zopangira polimeri zimapangidwa koyamba kukhala mbale, kenako kudzera mu njira monga kubowola ndi kutambasula, geogrid yokhala ndi gridi yokhazikika imapangidwa. Mawonekedwe a gridi amatha kukhala a sikweya, amakona anayi, ooneka ngati diamondi, ndi zina zotero. Kukula kwa gridi ndi makulidwe a geogrid zimasiyana malinga ndi zofunikira zaukadaulo ndi miyezo yopangira.
- Amapangidwa makamaka ndi zinthu za polima zokhala ndi mamolekyulu ambiri monga polypropylene (PP) kapena polyethylene (PE). Poyang'ana, ili ndi kapangidwe kofanana ndi gridi. Kapangidwe ka gridi kameneka kamapangidwa kudzera mu njira zinazake zopangira. Kawirikawiri, zinthu zopangira polimeri zimapangidwa koyamba kukhala mbale, kenako kudzera mu njira monga kubowola ndi kutambasula, geogrid yokhala ndi gridi yokhazikika imapangidwa. Mawonekedwe a gridi amatha kukhala a sikweya, amakona anayi, ooneka ngati diamondi, ndi zina zotero. Kukula kwa gridi ndi makulidwe a geogrid zimasiyana malinga ndi zofunikira zaukadaulo ndi miyezo yopangira.
Makhalidwe Ogwira Ntchito
1. Katundu wa Makina
Ili ndi mphamvu yokoka kwambiri. Geogrid ya pulasitiki yotambasuka pang'onopang'ono ili ndi mphamvu yokoka kwambiri pakutambasula ndipo imatha kupirira mphamvu zazikulu zokoka popanda kusweka. Mwachitsanzo, mphamvu yokoka ya geogrids zina zapamwamba kwambiri zotambasuka pang'onopang'ono zimatha kufika pa 100kN pa mita imodzi, zomwe zimapangitsa kuti ikhale yabwino kwambiri polimbitsa maziko ndikuletsa kusuntha kwa nthaka mbali.
Pulasitiki yotambasuka ya biaxial ili ndi mphamvu yolimba ya biaxial ndipo imatha kufalitsa bwino kupsinjika. Imatha kuletsa nthaka nthawi imodzi mbali zonse ziwiri, kukulitsa umphumphu ndi kukhazikika kwa nthaka.
2. Kukana dzimbiri
Chifukwa chakuti zigawo zake zazikulu ndi ma polima monga polypropylene kapena polyethylene, imalekerera bwino mankhwala monga ma acid ndi alkali. M'malo ena okhala ndi asidi wambiri kapena alkalinity kapena m'malo omwe mankhwala amatha kutuluka, pulasitiki imatha kusunga kukhazikika kwake ndipo sidzawonongeka chifukwa cha dzimbiri la mankhwala, motero kuonetsetsa kuti polojekitiyi ikhazikika kwa nthawi yayitali.
3. Kukana Kumva Kuwawa
Pamwamba pake ndi posalala, koma pali kukana kwa kukwawa. Pa nthawi yomanga, ngakhale itakwinya tinthu ta dothi ndi zida zomangira, siidzaphwanyika mosavuta ndipo ikhoza kuonetsetsa kuti kapangidwe kake ndi magwiridwe antchito a geogrid sizikukhudzidwa. Kuphatikiza apo, imathanso kukana kukwawa ndi kukwawa kwa tinthu ta dothi pakagwiritsidwa ntchito kwa nthawi yayitali.
4. Kugwira Ntchito kwa Madzi Otayira Madzi
Kapangidwe ka pulasitiki kofanana ndi ukonde ndi kothandiza pa kukhetsa madzi. M'mapulojekiti ena okonza maziko omwe amafunikira kukhetsa madzi, amatha kukhala ngati njira yotulutsira madzi, kulola madzi apansi panthaka kapena madzi ochulukirapo kutuluka kudzera m'mabowo a geogrid, kuchepetsa kuthamanga kwa madzi m'nthaka ndikuwonjezera mphamvu ya nthaka.
Madera Ogwiritsira Ntchito
1. Uinjiniya wa Misewu
Amagwiritsidwa ntchito kwambiri polimbitsa misewu ikuluikulu, njanji, ndi misewu ina. Kuyika geogrid yapulasitiki pansi pa subgrade kungathandize kukweza mphamvu ya kuberekera kwa subgrade ndikuchepetsa kusakhazikika kosagwirizana kwa subgrade. Makamaka m'gawo lofewa la subgrade, limatha kufalitsa bwino katundu wagalimoto wotumizidwa kuchokera pamwamba pa msewu, kuletsa kutuluka kwa nthaka ya subgrade, ndikukweza moyo wautumiki ndi chitonthozo cha msewu.
2. Uinjiniya Woteteza Malo Otsetsereka
Amagwiritsidwa ntchito polimbitsa ndi kuteteza malo otsetsereka. Mwa kuyika geogrid mu nthaka yotsetsereka, kukhazikika kwa nthaka kosatsetsereka kungakulitsidwe. Mphamvu yokangana pakati pa nthaka ndi nthaka ingalepheretse nthaka kutsetsereka pansi pamwamba pa malo otsetsereka, ndipo imathanso kusamutsa katundu pamwamba pa malo otsetsereka kupita mkati mwa thupi lotsetsereka, zomwe zimathandiza kuti malo otsetsereka akhalebe olimba akakhudzidwa ndi zinthu zakunja monga mvula - kusaka madzi ndi zivomerezi.
3. Kusunga Makoma Uinjiniya
Kuyika geogrid yapulasitiki mu backfill kumbuyo kwa khoma losungira kungachepetse kupanikizika kwa mbali kwa backfill pa khoma losungira. Kuyanjana pakati pa geogrid ndi backfill kumathandiza backfill kupanga yonse, ndipo gawo la kupsinjika kwa mbali kwa backfill kumasinthidwa kukhala mphamvu yokoka ya geogrid, motero kuchepetsa katundu wonyamulidwa ndi khoma losungira ndikuchepetsa kukula kwa kapangidwe ndi mtengo wa khoma losungira.
