Tsebo ea Sehlahisoa Ho Ratoa
Mochini oa ho Tšoaea Litsela ke Eng 'Me o Sebetsa Joang?
Mochini o tšoaeang tsela ke disebediswa tse ikgethang tsa kaho tse sebediswang ho kenya mela ya sephethephethe, dibaka tsa ho paka makoloi, dibaka tsa ho tshela batho ba tsamayang ka maoto, metsu le matshwao a polokeho hodima asphalt kapa konkreite. Ho itshetlehile ka naha, disebediswa tse tshwanang di ka boela tsa bitswa mochini o tšoaeang mela , mochini o tšoaeang tsela kapa mochini o pentang mela ya tsela.
Ha o sheba ka lekhetlo la pele, mosebetsi o shebahala o le bonolo: kenya pente ka mochining, latela mola 'me u leke ho se taka ntho e tšoanang le noha e khathetseng. Ha e le hantle, ho tšoaea hantle ho itšetlehile ka litsamaiso tse 'maloa tse sebetsang hammoho. Mochini o tlameha ho laola phallo ea thepa, bophara ba mola, botenya ba ho roala, lebelo la ho tsamaea le, ha ho hlokahala, lifaha tsa khalase tse bonahatsang. Boleng ba pente boa bohlokoa, empa bo ke ke ba lefella tsela e metsi, lebelo le sa tsitsang kapa ntlha e koetsoeng ea spray.
Mochini oa ho Tšoaea Litsela o Sebetsa Joang?
Boholo ba disebediswa tsa ho tshwaya tsela di latela mokgwa o tshwanang wa motheo. Basebetsi ba lokisa tsela mme ba beha tsela, maemo a mochini mme ba tlisa thepa ya ho tshwaya, mme hlooho ya tshebediso e beha thepa eo ka bophara bo laolwang. Difaha tsa khalase di ka lahlelwa hodima matshwao a matjha ho ntlafatsa ponahalo ya bosiu.
1. Tsela e katiloeng e Hloekisitsoe 'me Tsela e Lokisitsoe
Lerōle, mongobo, oli, metsoako e phekolang le matšoao a khale a hlephileng li ka fokotsa ho khomarela. Ke ka lebaka leo ho lokisoa ha bokaholimo ho lokelang ho hlahlojoa pele mosebelisi a qala ho lokisa khatello kapa mocheso. Mochini o ke ke oa rarolla bothata ba tsela ka ho ba lerata le phahameng.
Mocheso o boetse o ama tlamo ea thermoplastic. E le referense e sebetsang ea US, Tataiso ea TxDOT ho hloka sebaka se hloekileng, se omileng, moo tsela e ka tlas'a 50°F, kapa 10°C, le mocheso oa moea o ka tlase ho 55°F, kapa hoo e ka bang 13°C. Litekanyetso tsena ha lia lokela ho nkoa e le litlhophiso tse akaretsang; leqephe la tekheniki la mofani oa thepa le litlhaloso tsa projeke ea lehae li lula li le tsa bohlokoa.
2. Thepa e Isoa Tseleng
Mochini o pentang o batang o tšoaeang tsela hangata o sebelisa pompo e se nang moea. Pompo e phahamisa khatello ea pente 'me e qobella thepa ho feta ntlheng e nyane ea spray. Ha pente e tloha ntlheng, ho theoha ha khatello ka tšohanyetso ho etsa mohlala oa spray ntle le ho sebelisa moea o hatelitsoeng.
Kgatelelo ke karolo e le 'ngoe feela ea sistimi. Phallo ea pompo, boholo ba ntlha ea spray, ho teteana ha pente le palo ea lithunya tse sebetsang li etsa qeto ea hore na mochini o ka etsa mosebetsi o mokae. Mohlala, Graco LineLazer V 3900 e lekantsoe ka khatello e phahameng ka ho fetisisa ea ts'ebetso ea 3,300 psi, kapa bare ea 227, ka phallo e phahameng ka ho fetisisa ea lilithara tse 4.7 ka motsotso le tšehetso ea lithunya tse peli tsa spray. Tsena ke lipalo tse ikhethileng tsa mohlala, empa li bontša hore na ke hobane'ng ha ho bapisa khatello feela ho tšoana le ho bapisa literaka ka khatello ea mabili.
Mochini oa ho tšoaea tsela oa thermoplastic o sebetsa ka tsela e fapaneng. Thermoplastic e tiileng e qhibilihisoa ka har'a heater e arohaneng kapa sistimi e kopaneng ea ho futhumatsa. Thepa e qhibilihisitsoeng ebe e fetela ka lebokoseng la screed, seeta sa extrusion kapa hlooho ea spray. Mocheso o lokela ho lula o tsitsitse ho lekana ho boloka phallo ntle le ho senya binder.
A Tlhaloso ea thermoplastic ea Caltrans alkyd e fana ka mefuta e fapaneng ea ts'ebeliso ea 400–450°F, hoo e ka bang 204–232°C. Leha ho le joalo, mekhoa e fapaneng ea thermoplastic e ka hloka litlhophiso tse fapaneng, kahoo basebetsi ha baa lokela ho tšoara mocheso o le mong e le o loketseng mokotla o mong le o mong oa thepa.
3. Bophara ba Mohala, Botenya le Lebelo lia Leka-lekana
Bophara ba mola bo laoloa ke ntlha ea spray, sebaka sa sethunya kapa ho buleha ha lebokose la screed. Botenya ba ho koahela bo itšetlehile ka hore na ho behiloe thepa e kae sebakeng se fanoeng. Haeba tlhahiso ea thepa e lula e tšoana ha mochini o ntse o tsamaea ka potlako, matšoao a ba mosesaane. Haeba mochini o lieha, ho behoa thepa e ngata ka mithara.
Bakeng sa moralo oa litsela tsa US, Khatiso ea bo11 ea MUTCD e hlalosa mola o tloaelehileng o molelele e le bophara ba lisenthimithara tse 4-6, hoo e ka bang 102-152 mm. Mola o moholo o lokela ho ba bonyane bophara ba habeli ba mola o tloaelehileng. Tokomane e tšoanang e sebelisa mokhoa o tloaelehileng oa mola o robehileng oa karolo e tšoailoeng ea maoto a 10 e lateloang ke sekheo sa maoto a 30.
Litekanyo tsena li hlalosa hore na ke hobane'ng ha mochini o hloka ho tsamaisoa ka mokhoa o tsitsitseng le taolo e nepahetseng ea lithunya. Mohala o ka ba le bophara bo nepahetseng ba karolelano empa o ntse o hloleha tlhahlobo haeba karolo e 'ngoe le e 'ngoe e qala morao, e fela pele ho nako kapa e lelera tseleng.
4. Lifaha tsa Khalase li Ntlafatsa Ponahalo ea Bosiu
Lifaha tsa khalase tse bonahatsang li khutlisetsa lebone la hlooho la koloi ho mokhanni. Tšusumetso e itšetlehile ka boleng ba lifaha, sekhahla sa ts'ebeliso le botebo ba ho kenngoa. Ho latela Patlisiso ea FHWA , hangata lifaha tsa khalase li fetoha tse shebang morao ha hoo e ka bang 50-60% ea bophara ba tsona e kentsoe ka har'a thepa ea ho tšoaea.
Haeba lifaha li le holimo haholo, sephethephethe se ka li tlosa kapele. Haeba li teba haholo, ha ho na bokaholimo bo lekaneng ba lifaha bo lulang bo pepesitsoe ho bonahatsa leseli. Ka hona, lifaha tse ngata ha li ntlafale ka bohona; ho seng joalo basebetsi ba litseleng ba ka tšolla mokotla oohle 'me ba khutlela hae esale pele.
Mefuta e Meholo ea Mechini ea ho Tšoaea Litsela ke Efe?
| Mofuta oa mochini | Mokhoa oa kopo | Tšebeliso e tloaelehileng | Licheke tsa mantlha tsa ho reka |
|---|---|---|---|
| Mochini o se nang moea o penteng e batang | Sethunya sa spray se nang le khatello e phahameng | Libaka tsa ho paka makoloi, libaka tsa lifeme, litsela tsa lehae le tlhokomelo | Phallo ea pompo, boholo ba ntlha, bongata ba lithunya le ho lumellana ha pente |
| Mochini oa ho betla oa thermoplastic | Thepa e qhibilihisitsoeng e feta ka lebokoseng la screed | Methapo ea litsela, mela ea ho emisa le libaka tsa ho tšela ba tsamaeang ka maoto | Bokgoni ba ho futhumatsa, bophara ba mola, botenya le sistimi ya difaha |
| Mochini o fafatsang oa thermoplastic | Thepa e futhumetseng e pompeloa ka hlooho ea spray | Mela e melelele ea litsela e hlokang ts'ebeliso e potlakileng | Moralo oa pompo, taolo ea mocheso le mokhoa oa ho hloekisa |
| Mochini o nang le likarolo tse peli | Resin le hardener li lekanngoa le ho kopanngoa | Mekhoa ea ho tšoaea e phekotsoeng ka lik'hemik'hale, e sebetsang hantle haholo | Karolelano ea motsoako, bophelo ba pitsa, ho ntša metsi le ho nepahala ha tekanyo |
ACE e fana ka litlhophiso tse 'maloa kahare ho eona mefuta ea mechini ea ho tšoaea litsela , ho kenyeletsoa le pente e batang, thermoplastic e sutumetsoang ka letsoho le thepa ea thermoplastic e itsamaisang. Mohlala o nepahetseng o lokela ho khethoa ho tsoa linthong tse tšoaeang le maemong a projeke, eseng feela hore na ke mochini ofe o shebahalang o khahla haholo lethathamong.
Mochini o Tšoaeang Tsela ka Letsoho kapa o Itlhomang ka Booona?
Mochini o sutumelletsang ka letsoho o bonolo ho o beha haufi le libaka tsa ho paka makoloi, metsu, mela e mekhutšoanyane le libaka tse koetsoeng. Hape ho bonolo ho o tsamaisa pakeng tsa libaka tse nyane. mochini o iketsang oa ho tšoaea tsela oa thermoplastic e loketse haholoanyane bakeng sa mela e melelele e tswelang pele hobane e ka boloka maeto a tsitsitseng le ho fokotsa mokhathala oa mosebelisi.
Qeto e lokela ho nahanela bolelele ba ho tšoaea letsatsi le letsatsi, maqhubu a ho reteleha, gradient, paterone ea mola le litokisetso tsa lipalangoang. Matla a enjene feela a bolela karolo feela ea pale. Mochini o matla o qetang halofo ea shift o emetse thepa, ha re bua ka botekgeniki, o ntse o thabela phomolo e turang haholo.
Bareki ba Lokela ho Khetha Lisebelisoa tsa ho Tšoaea Litsela Joang?
Qala ka thepa ea ho tšoaea hobane e khetholla pompo, tanka, sistimi ea ho futhumatsa le hlooho ea ts'ebeliso. Ka mor'a moo, netefatsa bophara ba mola, botenya ba sepheo, paterone ea mola o tiileng kapa o robehileng le tlhahiso e lebelletsoeng ea letsatsi le letsatsi. Ke feela kamora hore lintlha tsena li hlake moo moreki a ka bapisang lienjine, litanka le litsamaiso tsa maeto.
| Ntlha ea khetho | Potso eo u lokelang ho e botsa |
|---|---|
| Phepelo ea thepa | Na pompo kapa sehatsetsi se ka fana ka thepa kapele kamoo mochini o e sebelisang kateng? |
| Lebelo la maeto | Na mochini o ka boloka botenya bo boletsoeng ka lebelo la oona la ho sebetsa le reriloeng? |
| Paterone ea mola | Na mochini o hloka taolo e iketsang ea mola o robehileng kapa lithunya tse 'maloa tsa spray? |
| Lifaha tsa khalase | Na sesebelisi se ka lekanngoa ha lebelo le bophara ba mola li fetoha? |
| Tlhokomelo | Na mapheo, difiltara, ditiiso, diphaephe le dikarolo tsa ho tjhesa di fumaneha sebakeng sa heno? |
A mochini o tšoaeang pente e batang o se nang moea e ka ba molemo bakeng sa libaka tsa ho paka makoloi, lifeme le merero ea tlhokomelo ea lehae, haholo-holo moo basebetsi ba fetolang mebala kapa ba tsamaeang lipakeng tsa mesebetsi e mekhutšoanyane. mochini o tšoaeang oa thermoplastic o sutumetsoang ka letsoho e ka tšoanela mela e teteaneng ea litsela, litsela tse tšelang le merero moo thepa e qhibilihisitsoeng e fanoang ho tsoa ho heater e arohaneng.
Mathata a Mochini o Tloaelehileng oa ho Tšoaea Litsela
Methapo e kobehileng hangata e supa ho se tsamaellane hantle ha tataiso, ho bapala ka setering kapa lebelo le sa tsitsang. Likarolo tse tšesaane li ka bakoa ke lebelo le feteletseng la ho tsamaea, phallo e fokolang ea pente, pompo e tsofetseng kapa ntlha e sa lokelang ea ho fafatsa. Meeli e makukuno e ka bakoa ke bophahamo bo fosahetseng ba sethunya, ho hlaka ha pente ho fokolang kapa lebokose le senyehileng la screed.
Ha thermoplastic e sa hokahane hantle, mosebelisi o lokela ho hlahloba bohloeki ba bokaholimo, mongobo le mocheso pele. Ho eketsa mocheso ntle le ho hlahloba tsela e katiloeng ho ka senya thepa ha bothata ba pele bo sa angoa.
Taelo e thusang ea ho rarolla mathata:
Hlahloba boemo ba tsela.
Hlahloba mocheso kapa ho hlaka ha thepa.
Hloekisa lifiltara, malebela a ho fafatsa le litsela tsa ho isa thepa.
Netefatsa ts'ebetso ea khatello ea pompo kapa ea ho futhumatsa.
Hlahloba setering, ho otloloha ha tataiso le motsamao oa lebili.
Ho fetola di-setting tse mmalwa ka nako e le nngwe ho etsa hore ho fumana diphoso ho be thata haholo. Metjhini e tshwana le baenjiniere ntlheng ena: ka bobedi ba itshwara hantle ha ho fetolwa phetoho e le nngwe feela ka nako.
Lipotso Tse Botsoang Khafetsa ka Mochini oa ho Tšoaea Litsela
Na mochini o le mong oa ho tšoaea litsela o ka sebelisa lipente tse fapaneng?
Ke feela ha pompo, liphaephe, litiiso, tanka le hlooho ea ts'ebeliso li lumellana le thepa ka 'ngoe. Pente e batang, thermoplastic le litsamaiso tsa likarolo tse peli ha li fetoloe ka bohona.
Na mochini o tšoaeang mola o ka sebelisa metsu le ho tšela metsu ea zebra?
E. Ho latela bophara le sebopeho se hlokahalang, mochini o ka sebelisa lebokose le sephara la screed, lithunya tse 'maloa tsa spray, stencil kapa sethunya se arohaneng sa letsoho.
Na mochini o mong le o mong oa thermoplastic o hloka sehatsetsi sa pele?
Tjhe. Mechini e mengata e menyenyane e fumana thermoplastic e qhibilihisitsoeng ho tsoa ho heater e arohaneng, ha mehlala e kopaneng e kopanya ho qhibiliha le ts'ebeliso. Tokisetso e nepahetseng e itšetlehile ka tšebeliso ea thepa ea hora le thepa ea sebaka.
Ke eng e etsang qeto ea tlhahiso ea mochini o tšoaeang litsela?
Tlhahiso ea 'nete ke bolelele bo amohelehang ba ho tšoaea bo phethiloeng ka hora ea mosebetsi kamora ho lumella moralo, ho futhumatsa, ho tlatsa hape, ho hloekisa le ho lokisa. Lebelo le phahameng la ho tsamaea le molemo, empa ha se karabo e felletseng.
Tlhahlobo ea ho Qetela e Sebetsang
Pele o kopa khotheishene, fa mofani thepa ea ho tšoaea, bophara ba mola o hlokahalang, botenya ba ho koahela, sebaka sa ho tšoaea letsatsi le letsatsi le karolo ea mela e tiileng, e robehileng le e sephara. Kopa tlhophiso e felletseng e koahelang pompo kapa sistimi ea ho futhumatsa, hlooho ea ts'ebeliso, sesebelisoa sa ho aba se nang le lifaha tsa khalase, lintho tse sebelisoang le likarolo tse ling tse khothaletsoang.
Mochini o loketseng oa ho tšoaea tsela o lokela ho boloka jeometri ea mola o hlokahalang le tlhahiso ea thepa tlas'a maemo a sebele a sebaka. Leqephe le lelelele la litlhaloso lea amoheleha, empa mola o otlolohileng, o bonahalang le o tlamiloeng hantle ke oo moreki a tla o lefella.
