mwachidule
Bungwe la American Association of State Highway and Transportation Official lili ndi udindo wokhazikitsa miyezo pakupanga ndi kumanga misewu yonse kuti zitsimikizire kuti zili bwino komanso zachitetezo. Mulingo umodzi wotere ndi AASHTO M180, womwe umakhala ndi mafotokozedwe azitsulo zamsewu waukulu. Positiyi, pamenepa, imagwira ntchito yofunika kwambiri kuteteza magalimoto ndi anthu oyenda pansi ku zoopsa zomwe zili mkati mwa misewu. Pepalali likuwona zofunikira, magawo aukadaulo, ndi maubwino azitsulo zachitsulo za AASHTO M180.
Zolemba za AASHTO M180 Steel Posts
Mphamvu Yaikulu Zolemba za AASHTO M180 ndizo, mwa mapangidwe, opangidwa kuchokera kuzitsulo zamphamvu kwambiri, makamaka Gulu la 345 kapena 350. Kusankhidwa kwa zinthu zimenezo kumatanthauza kuti zolembazo zimasunga umphumphu wapangidwe ndikuwongolera kukana katundu wokhudzidwa. Chitsulocho chidzakwaniritsanso zofunikira za ASTM pazitsulo monga ASTM A570 zachitsulo chozizira kapena ASTM A588 pazitsulo zanyengo.
Kukula Kwakukulu Miyezoyo imayika miyeso yocheperako ya nsanamirazo malinga ndi kutalika, m'mimba mwake, ndi makulidwe a khoma. Kufanana kumeneku kumatsimikizira kukhazikitsidwa koyenera komanso kugwirizana ndi mamembala ena a guardrail system.
Chitetezo ku Kuwonongeka Kuti mupirire nyengo yoyipa komanso zinthu zina zakunja, AASHTO M180 imafuna kuti zitsulo zazitsulo zizikulungidwa, zokutidwa, kapena kuthandizidwa kuti zichotse dzimbiri. Izi zitha kuchitika kudzera mukuyatsa kotentha kokhala ndi makulidwe ochepera a ASTM A123 kapena miyezo ina yopereka chitetezo chofanana ndi dzimbiri.
Dongosolo la Kuyika Mafotokozedwewa amapereka njira yokhazikitsira ma post m'njira yoti athandizidwe mokwanira komanso mokwanira. Izi zitha kukhazikitsidwa pogwiritsa ntchito kubowola kovomerezeka, kuyendetsa, kapena njira zokhazikitsira konkriti ndi malo ovomerezeka ndi mayanidwe omwe amayenera kupereka misonkhano yogwira ntchito komanso yosangalatsa.
Magawo aumisiri a AASHTO M180 Posts
Zofunika
- Gulu la Zitsulo: Nthawi zambiri giredi 345 kapena 350
- Miyezo: Yogwirizana ndi ASTM A570 (chitsulo chozizira) kapena ASTM A588 (chitsulo chanyengo)
miyeso
- Utali Wolemba: Nthawi zambiri kutalika kwa nsanamira kumasiyana pakati pa 9.5 ndi 12.5 mapazi, kutengera
- Post Diameter: Nthawi zambiri, 3.25 mainchesi (82.55 mm)
- Makulidwe a Khoma: amasiyana pakati pa 0.165 mainchesi (4.19 mm) ndi 0.200 mainchesi (5.08 mm)
Kusakanizidwa kwa Kutentha
- Galvanizing: Chophimba choviyitsa chotentha chomwe nsanamirazo ziyenera kukolezedwa. ASTM A123 imatchula makulidwe ochepera a zokutira
- Kupaka: Kuphimba kwina kuyenera kugwirizana ndi zomwe zafotokozedwa kuti zisawonongeke
Zofunika Zokonzera
- Kuyimitsa: Zolemba ziyenera kuzikika mokhazikika kudzera m'njira zoyenera monga kubowola, kuyendetsa galimoto, ndikuyika konkriti.
- Kutalikirana ndi Kuyanjanitsa: Izi zimawongoleredwa pazofunikira zenizeni kuti zithandizire zolembazo molondola komanso kukonza mawonekedwe
kuyezetsa
- Kuyesa Kwamphamvu: Izi zimatsimikizira kuti zolembazo zimatha kupirira ngozi zagalimoto
- Kuyesa kwamphamvu: Izi zimagwiritsidwa ntchito pozindikira mphamvu ya zokolola komanso mphamvu yomaliza yachitsulo.
Ubwino Wogwiritsa Ntchito AASHTO M180 Posts
Kupititsa patsogolo Chitetezo Kugwiritsa ntchito zolemba zogwirizana ndi AASHTO M180 kumatsimikizira kugwiritsidwa ntchito kwa nsanamira zokhazikika, zapamwamba zomwe zimathandizira kwambiri chitetezo m'misewu.
Mapangidwe Okhazikika Miyeso ya yunifolomu ndi njira zoyikapo mu mzere wa mankhwala ndi makiyi ogwirizana ndi kuphweka kwa zomangamanga.
Kuchita Bwino Kuyimitsidwa ndi magwiridwe antchito otsimikiziridwa kumachepetsa kufunika kosintha ntchito zodula komanso zovuta zina zanthawi yayitali.
Kugwiritsa Ntchito Zolemba zachitsulo za AASHTO M180
Highway Median Barriers Zomwe zimagwiritsidwa ntchito pazitsulo zazitsulo za AASHTO M180 zili m'misewu yapakatikati, zomwe zimalepheretsa magalimoto kuwoloka mumsewu womwe ukubwera komanso kuchepetsa chiopsezo cha kugundana. Choncho, zitsulo zazitsulo zamphamvu kwambiri zimatsimikizira kuti zotchinga zomwe zimamangidwa zimakhala zokwanira kuti zithetse mphamvu zowonongeka ndipo, pobwezera, zimakhala ngati chitetezo chodalirika.
Roadside Guardrails Ndizitsulo zachitsulo za AASHTO M180, zitetezeni magalimoto kuti asagwe mwangozi m'mphepete mwa msewu, makamaka m'madera ovuta kwambiri kapena mbali zopindika zakuthwa. Miyezo yofananira ndi njira zokhazikika zoyikamo ma njanji am'mphepete mwa msewuwa zimawapangitsa kukhala odalirika komanso ogwiritsidwa ntchito.
Bridge Guardrails Malo oteteza mlatho amapereka chitsimikizo chowonjezereka mkati mwa milatho, pomwe kugunda kwagalimoto kumatha kukhala ndi zotsatirapo zowopsa, pogwiritsa ntchito ma post a AASHTO M180. Kuphatikiza apo, positi ya corrosion resistance imapangitsa kuti guardrail akhale wokhazikika komanso wogwira ntchito ngakhale m'malo ovuta, omwe amapezeka pamilatho.
Mountain Road Guardrails Misewu ya m'mapiri imakhala yovuta kwambiri kutembenuka ndikugudubuzika pamalo okwera mosiyanasiyana. Zida za Guardrail zimakhazikika bwino m'magawo awa ndi zitsulo za AASHTO M180 zamphamvu kwambiri kuti apewe magalimoto akuthamanga pamsewu komanso kuteteza oyendetsa.
Zina Zokhudza Zachilengedwe
Kugwiritsa ntchito zitsulo zanyengo (ASTM A588) m'makalata a AASHTO M180 sikunangowonjezera nthawi ya moyo komanso kwachepetsa kwambiri kukonzanso komwe kumayenera kuchitika. Chitsulo cha Weathering chimatenga mawonekedwe okhazikika ngati dzimbiri, zomwe zimapanga chophimba chotetezera chomwe chimachotsa kufunikira kojambula kapena zipangizo zina zowonjezera.
Kukonza ndi Kuyendera Kusamalira bwino ndi kuyang'anitsitsa kudzaonetsetsa kuti ndondomeko ya guardrail ikugwira ntchito. Izi zingakhale zophweka ngati kuyang'ana chizindikiro chilichonse cha dzimbiri, kuwonongeka kwa galimoto, komanso ngati nsanamirazo zikanazikika mokwanira. Izi zimasunga kukhulupirika kwa machitidwe achitetezowa kuti azikhala nthawi yayitali.
Chidule
AASHTO M180 ndiyofunikira pakuwonetsetsa kuti malo onse oteteza misewu yayikulu ndi otetezeka komanso odalirika kwambiri. Imatanthawuza chitsulo champhamvu kwambiri, miyeso yolondola, ndi miyeso yoyenera yolimbana ndi dzimbiri; Chifukwa chake, kudzera mu muyezo uwu, njira zolondera zimapangidwa, zomwe zizikhala zolimba ndikugwira ntchito kuti zithandizire ndi kuteteza ogwiritsa ntchito misewu modalirika.
- Chitsulo Champhamvu Kwambiri: Imalola ma post kuti atenge zolemetsa popanda kulephera posamalira kapangidwe kake.
- Miyeso Yokhazikika: Imatsimikizira kuyanjana ndi kukhazikitsa koyenera.
- Kusakanizidwa kwa Kutentha: Kutetezedwa kwa ma posts ku zovuta zachilengedwe.
- Miyezo yoyika: Kuwonetsetsa kuti kampaniyo ikukhazikitsa positi ndikugwira ntchito molingana ndi kapangidwe kake.
- Kugwiritsa Ntchito: Kuchokera m'misewu ikuluikulu kupita ku misewu yamapiri, mizatiyi ndi gwero lofunikira lachitetezo.
Pomaliza, kutsatira AASHTO M180 popanga njira zoyang'anira misewu yayikulu ndikofunikira pachitetezo komanso moyo wautali. Popeza kuti nsanamira zachitsulo zidzapereka mlingo wapamwamba uwu wa ntchito yofunikira, chitetezo cha pamsewu chimakhala bwino, komanso moyo wa aliyense wozungulira. Zambiri kapena chithandizo chingapezeke polumikizana ndi akatswiri amakampani ndikuwunikanso zonse za AASHTO M180.
