Mazuvano, nekuvandudzwa kwehupfumi uye kudiwa kwevanhu nezvekufambisa, Guta rega rega riri kuvaka nzira yepasi pevhu.Larsen simbi pepa murwiinofanira kunge iri chinhu chakakosha chekuvakisa mukuvakwa kwe subway.
Larsen simbi pepa murwiine simba rakawanda, kubatana kwakasimba pakati pemurwi uye murwi, yakanaka yekuparadzanisa mvura, uye inogona kushandiswa zvakare. Iwo akajairwa chikamu mhando dzesimbi mapepa mirwi anowanzo kuve U-akaumbwa kana Z-akaumbwa. U-yakaita simbi mapepa mirwi anoshandiswa mukuvaka njanji yepasi pevhu muChina. Nzira dzayo dzekunyura uye dzekubvisa, kushandiswa kwemichina kwakafanana neI-simbi murwi, asi nzira yekuvaka yayo inogona kukamurwa kuita imwe-layer simbi pepa murwi cofferdam, kaviri-layer simbi pepa murwi cofferdam uye skrini. Nekuda kwegomba rakadzika nheyo panguva yekuvakwa kwenjanji yepasi, kuitira kuti ive nechokwadi chekumira kwayo uye kuvakwa kuri nyore, uye kuita kuti ivharwe nekuvharwa, chidzitiro chekrini chinoshandiswa zvakanyanya.
Larsen simbi simbi pepa murwi kureba 12m, 15m, 18m, etc., chiteshi simbi pepa murwi murwi kureba 6 ~ 9m, muenzaniso uye kureba zvinotemwa nekuverenga. Steel sheet pile ine yakanaka kusimba. Mushure mekunge kuvakwa kwegomba rekutanga kwapera, murwi wesimbi wesimbi unogona kudhonzwa uye kudzokororwa zvakare. Kuvaka kwakanaka uye nguva pfupi yekuvaka; Chiratidzo chesimbi pepa murwi haigoni kuvhara mvura, munzvimbo yepamusoro pemvura yepasi, kuparadzaniswa kwemvura kana matanho ekunaya anofanira kutorwa. Chiratidzo chesimbi simbi ine simba rekukotama risina simba, iro rinonyanya kushandiswa kugomba renheyo kana mugero wakadzika ≤4m, uye chitsigiro kana kudhonza anchor inofanira kuiswa pamusoro. Iko kuoma kwetsigiro kudiki uye deformation mushure mekuchera yakakura. Nekuda kwekugona kwayo kukotama kwakasimba, Larsen simbi simbi murwi inonyanya kushandiswa kwakadzika 5m ~ 8m hwaro gomba ine yakaderera zvinodiwa kwezvakatipoteredza, zvichienderana nerutsigiro (kudhonza anchor) kuisirwa.
Nguva yekutumira: Jun-14-2023
