Isingeniso senqwaba yensimbi kaLarsen

KuyiniInqwaba yeshidi lensimbi likaLarsen?
Ngo-1902, unjiniyela waseJalimane ogama lakhe linguLarsen waqala ukukhiqiza uhlobo lwenqwaba yensimbi ene-cross-section emise okwe-U kanye nezingidi kuzo zombili izinhlangothi, eyasetshenziswa ngempumelelo kwezobunjiniyela, futhi yabizwa ngokuthi "Inqwaba Yeshidi Larsen"Ngegama lakhe. Namuhla, izinqwaba zensimbi zikaLarsen ziye zaziwa emhlabeni wonke futhi zisetshenziswa kabanzi ekusekeleni imigodi yesisekelo, ama-cofferdams obunjiniyela, ukuvikela izikhukhula kanye neminye imisebenzi.

Inqwaba yensimbi yeLarsen iyindinganiso evamile yamazwe ngamazwe, uhlobo olufanayo lwenqwaba yensimbi yeLassen ekhiqizwa emazweni ahlukene lungaxutshwa kuphrojekthi efanayo. Indinganiso yomkhiqizo wenqwaba yensimbi yeLarsen ibeke imibandela ecacile nezidingo ngobukhulu besigaba esiphambeneyo, isitayela sokukhiya, ukwakheka kwamakhemikhali, izakhiwo zemishini kanye nezindinganiso zokuhlola zezinto, futhi imikhiqizo kufanele ihlolwe ngokuqinile efektri. Ngakho-ke, inqwaba yensimbi yeLarsen inokuqinisekiswa kwekhwalithi enhle kanye nezakhiwo zemishini, futhi ingasetshenziswa ngokuphindaphindiwe njengezinto zokushintsha, ezinezinzuzo ezingenakuphikwa ekuqinisekiseni ikhwalithi yokwakha kanye nokunciphisa izindleko zephrojekthi.

 

Izinhlobo zezinqwaba zensimbi zaseLarsen

Ngokuya ngobubanzi besigaba, ukuphakama kanye nobukhulu obuhlukene, izinqwaba zensimbi zaseLarsen zingahlukaniswa ngamamodeli ahlukahlukene, kanti ububanzi obusebenzayo benqwaba eyodwa yezinqwaba zensimbi ezisetshenziswa kakhulu bunemininingwane emithathu, okungu-400mm, 500mm kanye no-600mm.
Ubude beNqwaba Yensimbi Eqinile bungenziwa ngokwezifiso futhi bukhiqizwe ngokwezidingo zephrojekthi, noma bunganqunywa bube yizinqwaba ezimfushane noma buhlanganiswe bube yizinqwaba ezinde ngemva kokuthenga. Uma kungenzeki ukuthutha izinqwaba zensimbi ezinde ziye endaweni yokwakha ngenxa yokulinganiselwa kwezimoto nemigwaqo, izinqwaba zohlobo olufanayo zingathuthwa ziye endaweni yokwakha bese zihlanganiswa futhi zinde.
Izinto zensimbi zeLarsen sheet pile
Ngokusho kwamandla okukhiqiza kwezinto, amazinga ezinto zokwakha ama-Larsen steel sheet piles ahambisana nezindinganiso zikazwelonke yi-Q295P, Q355P, Q390P, Q420P, Q460P, njll., kanti lawo ahambisana nezindinganiso zaseJapan yi-I-SY295, I-SY390, njll. Amazinga ahlukene ezinto zokwakha, ngaphezu kokwakheka kwamakhemikhali azo, angashintshwa futhi anwetshwe. Amazinga ahlukene ezinto zokwakha ngaphezu kokwakheka kwamakhemikhali ahlukene, amapharamitha awo okusebenza nawo ahlukile.

Amamaki ezinto zensimbi zeLarsen ezisetshenziswa kakhulu kanye namapharamitha omshini

Okujwayelekile	Izinto	Ukucindezeleka kwesivuno N/mm²	Amandla okudonsa N/mm²	Ukwelulwa %	Umsebenzi wokumunca umthelela J(0℃)
I-JIS A 5523 (I-JIS A 5528)	I-SY295	≥295	≥490	≥17	≥43
	I-SY390	≥390	≥540	≥15	≥43
I-GB/T 20933	Q295P	≥295	≥390	≥23	——
	Q390P	≥390	≥490	≥20	——