Qhov Zoo Tshaj Plaws Steel Prestressed Engineering Prestressed Concrete Steel Strand

Cov hlua hlau prestressed yog cov hlua hlau uas muaj 2, 3, 7 lossis 19 lub hlau muaj zog siab, thiab tau dhau los ua kev kho mob kom txo kev ntxhov siab (kev kho kom ruaj khov), tsim nyog rau cov pob zeb prestressed lossis cov hom phiaj zoo sib xws.

Cov yam ntxwv tseem ceeb ntawm cov hlau prestressed strands yog lub zog siab, kev ua haujlwm zoo so, thiab ncaj nraim thaum unfolded. Lub zog tensile feem ntau yog 1860 MPa, thiab muaj cov qib zog xws li 1720, 1770, 1960, 2000, thiab 2100 MPa. Lub zog tso zis ntawm cov hlau no kuj siab heev.

Cov hlau hlau uas muaj cov pa roj carbon ntau yog txias-kos rau hauv cov hlau hlau tom qab kev kho saum npoo, thiab tom qab ntawd qee cov hlau hlau raug ntswj ua cov hlua raws li cov qauv hlau, thiab tom qab ntawd lawv tau tsim los ntawm cov txheej txheem kev ruaj khov uas txo kev ntxhov siab. Txhawm rau kom ntev lub zog, cov hlau hlau tuaj yeem muaj hlau lossis tsis yog hlau plating lossis txheej, xws li galvanizing, epoxy txheej, thiab lwm yam. Txhawm rau kom nce lub zog sib txuas nrog cov pob zeb, qhov chaw yuav muaj nicks thiab lwm yam. Cov hlau hlau molded prestressed strand dhau los ntawm cov txheej txheem pwm compression tom qab stranding, cov qauv yog denser thiab txheej nto yog qhov tsim nyog dua rau anchoring. Txhawm rau ua cov hlau tsis sib txuas (cov hlau tsis sib txuas) siv cov hlau pre-stressed strands, coated nrog cov roj tiv thaiv xeb lossis paraffin wax, thiab tom qab ntawd qhwv nrog high-density polyethylene (HDPE).