Nhanganyaya yeLarsen simbi pepa murwi

ChiiLarsen simbi pepa murwi?
Muna 1902, injiniya wekuGermany anonzi Larsen akatanga kugadzira rudzi rwesimbi yesimbi ine U shaped cross-section uye makiyi kumigumo yese, iyo yakashandiswa zvinobudirira muinjiniya, uye yakanzi "Larsen Sheet Pile" mushure mezita rake. Mazuva ano, Larsen simbi pepa mirwi yakazivikanwa pasi rose uye yakashandiswa zvakanyanya mukutsigira gomba rekutanga, engineering cofferdams, kudzivirira mafashama uye mamwe mapurojekiti.

Larsen simbi pepa murwi ndeyepasi rose mwero, iyo yakafanana mhando yeLassen simbi pepa murwi inogadzirwa munyika dzakasiyana inogona kusanganiswa muchirongwa chimwe chete. Iyo yechigadzirwa chiyero cheLarsen simbi simbi murwi wakaita zvakajeka zviga uye zvinodiwa pakukura-chikamu saizi, yekuvhara maitiro, makemikari kuumbwa, michina zvivakwa uye yekuongorora zviyero zvezvinhu, uye zvigadzirwa zvinofanirwa kuongororwa pafekitori. Naizvozvo, Larsen simbi simbi murwi ine yakanaka yemhando yekuvimbisa uye michina zvivakwa, uye inogona kushandiswa kakawanda sezvinhu zvekuchinja, izvo zvine zvakanakira zvisingadzoreki mukuona kunaka kwekuvaka uye kuderedza mutengo wepurojekiti.

 

Mhando dzeLarsen simbi mapepa mirwi

Zvinoenderana nehupamhi hwechikamu chakasiyana, kureba uye ukobvu, Larsen simbi pepa mirwi inogona kukamurwa kuva mhando dzakasiyana-siyana, uye hunobudirira hurefu hwemurwi umwechete weanowanzo shandiswa simbi pepa mirwi inonyanya kutaurwa matatu, anoti 400mm, 500mm uye 600mm.
Hurefu hweTensile Steel Sheet Pile inogona kugadzirwa uye inogadzirwa zvinoenderana nezvinodiwa neprojekiti, kana inogona kutemwa kuita mapfupi mirwi kana kusungirirwa kuita mirwi yakareba mushure mekutenga. Kana zvisingabviri kutakura mirwi refu yesimbi kuenda kunzvimbo yekuvaka nekuda kwekuganhurwa kwemotokari nemigwagwa, mirwi yemhando imwechete inogona kutakurwa kuenda kunzvimbo yekuvaka uye yobva yaiswa weld uye kureba.
Larsen simbi pepa murwi zvinhu
Zvinoenderana nekusimba kwegoho rezvinhu, mamakisi emidziyo yeLarsen simbi mapepa mirwi inoenderana neyakajairwa yenyika ndeye Q295P, Q355P, Q390P, Q420P, Q460P, nezvimwewo, uye ayo anoenderana neJapan standardSY295, SY390, etc. Zvikamu zvakasiyana-siyana zvezvinhu, kuwedzera kune zvinyorwa zvemakemikari, zvinogonawo kuiswa uye kureba. Akasiyana mamakisi ezvishandiso mukuwedzera kune akasiyana makemikari kuumbwa, ayo mechanical paramita akasiyana zvakare.

Inowanzo shandiswa Larsen simbi shizha murwi zvinhu mamakisi uye michina paramita

Standard	Material	Kushushikana kwegoho N/mm²	Tensile simba N/mm²	Elongation %	Impact absorption basa J(0℃)
JIS A 5523 (JIS A 5528)	SY295	≥295	≥490	≥17	≥43
	SY390	≥390	≥540	≥15	≥43
GB/T 20933	Q295P	≥295	≥390	≥23	——
	Q390P	≥390	≥490	≥20	——