Overview
Mokhatlo oa Amerika oa Basebeletsi ba Litsela tse kholo tsa Naha le Lipalangoang o filoe mosebetsi oa ho beha maemo a ho rala le ho aha meaho eohle ea litsela tse kholo ho netefatsa boleng le polokeho. E 'ngoe ea maemo a joalo ke AASHTO M180, e fanang ka litlhaloso bakeng sa litšepe tsa tšireletso ea litsela tse kholo. Poso ena, tabeng ena, e bapala karolo ea bohlokoa haholo ho sireletseng likoloi le batho ba tsamaeang ka maoto likotsing tse ka har'a libaka tsa litsela. Pampiri ena e shebana le likarolo tsa bohlokoa, litekanyetso tsa tekheniki, le melemo ea li-post tsa tšepe tsa AASHTO M180.
Likarolo tsa AASHTO M180 Steel Posts
Matla a Phahameng Li-post tsa AASHTO M180, ka moralo, li entsoe ka tšepe e matla e phahameng, haholo-holo Kereiti ea 345 kapa 350. Khetho eo ea thepa e bolela hore li-post li boloka botšepehi ba sebopeho le ho laola ho hanyetsa meroalo ea tšusumetso. Tšepe e tla khotsofatsa litlhoko tsa ASTM bakeng sa litšepe tse kang ASTM A570 bakeng sa tšepe e entsoeng ka serame kapa ASTM A588 bakeng sa tšepe ea boemo ba leholimo.
Boholo bo tloaelehileng Litekanyetso li beha bonyane ba boholo ba lipalo ho latela bolelele, bophara le botenya ba lebota. Ho tšoana hona ho tiisa hore ho beoa ka nepo le ho lumellana le litho tse ling tsa sistimi ea balebeli.
Tšireletso Khahlanong le Corrosion Ho mamella maemo a leholimo a mabe le mabaka a mang a kantle, AASHTO M180 e hloka hore litšiea tsa tšepe li kenngoe ka masenke, li koahetsoe, kapa li tšoaroe ho leleka kutu. Sena se ka etsoa ka ho kenella ka har'a metsi a chesang a boleng bo tlase ba ho roala ka ASTM A123 kapa litekanyetso tse ling tse fanang ka ts'ireletso e ts'oanang ea kutu.
Lintlha tsa ho kenya Litlhaloso li fana ka mokhoa oa ho kenya li-post ka tsela eo li tla tšehetsoa ka ho lekaneng le ka sebopeho se lekaneng. Tsena li ka kenngoa ho sebelisoa mekhoa e lumelitsoeng ea ho cheka, ho khanna, kapa ho seta konkreite le sebaka se khothalelitsoeng le ho lokisoa tse lokelang ho fana ka likopano tse sebetsang hantle le tse khahlisang ka bokhabane.
Teknoloji Parameters ea AASHTO M180 Posts
lintho tse bonahalang
- Kereiti ea tšepe: Ka tloaelo kereiti ea 345 kapa 350
- Maemo: Ho lumellana le ASTM A570 (tšepe e entsoeng ka mokhoa o batang) kapa ASTM A588 (tšepe ea boemo ba leholimo)
litekanyo
- Bolelele ba Post: Ka tloaelo bolelele ba poso bo fapana lipakeng tsa 9.5 le 12.5 maoto, ho latela ts'ebeliso.
- Poso Diameter: Hangata, 3.25 inches (82.55 mm)
- Botenya ba Lebota: bo fapana lipakeng tsa 0.165 inches (4.19 mm) le 0.200 inches (5.08 mm)
Khahlano ea ho Corrosion
- Galvanizing: Sekoaelo sa metsi se chesang seo litšiea li tlamehang ho kenngoa ka tsona. ASTM A123 e bolela bonyane botenya ba ho roala
- Ho roala: Ho apara ka mokhoa o mong ho tlameha ho lumellana le litekanyetso tse hlalositsoeng tsa ho hanyetsa kutu
Litlhoko tsa ho kenya
- Anchoring: Lits'oants'o li tlameha ho ts'oaroa ka thata ka mekhoa e nepahetseng joalo ka ho cheka, ho khanna le ho beha ka konkreite.
- Sebaka le Boiketlo: Tsena li laoloa ka litlhoko tse khethehileng bakeng sa ho tšehetsa mesebetsi ka nepo le tlhokomelo ea ponahalo
Testing
- Teko ea Liphello: Sena se tiisa hore lipapatso li ka mamella likotsi tsa likoloi
- Teko ea Tensile: Sena se sebelisoa ho lekola matla a tlhahiso le matla a ho qetela a tšepe.
Melemo ea ho Sebelisa AASHTO M180 Posts
Ntlafatso ea Ts'ireletso Tšebeliso ea AASHTO M180 e lumellanang le poso e tiisa ts'ebeliso ea liphatlalatso tse tšoarellang, tsa boleng bo holimo tse ntlafatsang haholo polokeho litseleng.
Moqapi o Tloaelehileng Litekanyo tse ts'oanang le mekhoa ea ho kenya moleng oa sehlahisoa ke linotlolo tsa ho lumellana le boiketlo ba ho haha.
Ho boloka litšenyehelo Maemo le ts'ebetso e netefalitsoeng e fokotsa tlhoko ea liphetoho tse theko e boima tsa mosebetsi le mathata a mang a nako e telele.
Lisebelisoa tse sebetsang tsa AASHTO M180 Steel Posts
Highway Median Barriers Kopo e tloaelehileng bakeng sa li-post tsa tšepe tsa AASHTO M180 e ka har'a mekoallo ea bohareng ba litsela tse kholo, tse thibelang likoloi ho tšela sephethephethe se tlang le ho fokotsa kotsi ea ho thulana ka hlooho. Ka hona, litšepe tse matla tse phahameng li tiisa hore litšitiso tse hahiloeng li na le bokhoni bo lekaneng ba ho hanyetsa matla a matla a ts'oaetso 'me, ka lehlakoreng le leng, li sebetsa e le tšireletso e ka tšeptjoang.
Balebeli ba Tsela Ka litšiea tsa tšepe tsa AASHTO M180, sireletsa likoloi hore li se ke tsa oela ka phoso litseleng, haholo-holo libakeng tse thata tse kobehileng kapa libakeng tse kobehileng. Litekanyo tse ts'oanang le mekhoa e tloaelehileng ea ho bea litšiea tsena tse ka thōko ho tsela li etsa hore li tšeptjoa ebile li ka sebelisoa.
Balebeli ba Bridge Likarolo tsa borokho li fana ka tiisetso e eketsehileng ka har'a marokho, moo ho thulana ha koloi ho ka bang le liphello tse kotsi, ho sebelisa li-post tsa AASHTO M180. Ho feta moo, sebaka sa ho hanyetsa kutu se etsa hore sistimi ea ts'ireletso e tšoarelle le ho sebetsa le maemong a mabifi a tikoloho, a atileng marokhong.
Balebeli ba Tsela ea Thaba Litsela tsa lithabeng li hlahisa phephetso e ikhethang ea ho phethoha le ho thella libakeng tse phahameng tse sa tšoaneng. Lisebelisoa tsa Guardrail li tsitsitse hantle likarolong tsena ke li-post tsa tšepe tsa AASHTO M180 tse matla haholo ho qoba likoloi tse mathang tseleng le ho sireletsa bakhanni.
Tšusumetso e 'ngoe ea Tikoloho
Tšebeliso ea tšepe ea boemo ba leholimo (ASTM A588) ho li-post tsa AASHTO M180 ha e ntlafatse nako ea bophelo feela empa hape e fokolitse haholo palo ea tlhokomelo e lokelang ho etsoa. Tšepe ea boemo ba leholimo e nka ponahalo e tsitsitseng ea mafome, e leng se etsang hore ho be le tšireletso e sireletsang e felisang tlhokahalo ea ho penta kapa lisebelisoa tse ling tse eketsehileng tsa seaparo.
Tlhokomelo le Tlhahlobo Tlhokomelo e nepahetseng le tlhahlobo e tla netefatsa ts'ebetso ea sistimi ea ts'ireletso. Sena se ka ba bonolo joalo ka ho batla sesupo sefe kapa sefe sa ho bola, tšenyo ea koloi, le hore na li-post li ntse li eme ka mokhoa o lekaneng. Sena se boloka botšepehi ba litsamaiso tsena tsa polokeho hore li tšoarelle nako e telele ka nako e telele.
Summary
AASHTO M180 e bohlokoa ho netefatseng hore litšepe tsohle tsa literene tse kholo li bolokehile ebile li ts'epahala haholo. E hlalosa tšepe e matla haholo, litekanyo tse nepahetseng, le mehato e nepahetseng ea ho hanyetsa khahlanong le ho bola; ka hona, ka mokhoa ona, litsamaiso tsa tšireletseho lia ntlafatsoa, tse tla ipaka li tšoarella le ho sebeletsa ho sebeletsa le ho sireletsa basebelisi ba litsela ka bots'epehi.
- Tšepe e Matla a Phahameng: E lumella lipehelo ho nka meroalo e mengata ntle le ho hloleha ha o ntse o boloka sebopeho.
- Litekanyo tse Emeng: E netefatsa ho lumellana le ho kenya ka nepo.
- Khahlano ea ho Corrosion: Tšireletso ea mesebetsi khahlanong le tšusumetso e matla ea tikoloho.
- Maemo a Tlhophiso: Ho netefatsa hore feme e tiisa poso le ho sebetsa ho latela moralo.
- Tšebeliso e sebetsang: Ho tloha litseleng tse kholo ho ea litseleng tsa lithaba, lipalo tsena ke mohloli oa bohlokoa oa mehato ea polokeho.
Qetellong, ho latela AASHTO M180 ha ho etsoa litsamaiso tsa balebeli ba litsela tse kholo ho bohlokoa bakeng sa polokeho le bophelo bo bolelele. Kaha litšepe tsa tšepe li tla fana ka boemo bona bo hlaheletseng ba ts'ebetso e hlokahalang, tšireletso ea litsela e ntlafala, 'me ho joalo le ka bophelo ba bohle ba potolohileng. Lintlha tse ling kapa tšehetso li ka fumanoa ka ho ikopanya le litsebi tsa indasteri le ho hlahloba lintlha tse feletseng tsa AASHTO M180.
