Mmepe nke PC Strands na Prestressed steel ngwaahịa arịlịka sistemu

Ngwaahịa nchara prestressed enweela ọganihu dị ukwuu kemgbe 1950 nke narị afọ gara aga, enwere isi ihe abụọ na nzụlite mmepe ya. Nke mbụ, ike nke ihe ahụ ji nwayọọ nwayọọ na-abawanye, nke mere na ọ na-ebelata nha na ịdị arọ nke ihe ndị a na-emebu, ọbụna na-ebelata ụgwọ ọrụ ahụ; Nke abụọ, na ndabere nke imeziwanye ike, anyị kwesịrị ịṅa ntị na mmepe nke ihe na-arụ ọrụ mgbochi corrosion dị elu, nke mere na ọ ga-eme ka ịdịte aka nke ihe ndị a na-eji ígwè eme ihe na-eme ka ọ dịkwuo mma ma chekwaa ụgwọ ọrụ.

N'ihe gbasara eriri ígwè dị elu na nke ezumike dị ala, a na-ekewa usoro mmepe ha n'ụzọ kwesịrị ekwesị na nkebi anọ: eriri igwe na-adịghị mma & larịị nchara - galvanized steel strands na unbonded steel strands - unbonded galvanized steel strands - epoxy steel strands. Na nke mbụ nke atọ nke mmepe, arịlịka na-arụ ọrụ mkpachị dakọtara na ígwè eriri bụ roughly otu; Nhazi ya, nhazi ya na mmepụta ya aghọwo nnukwu. Nke anọ ogbo nke mmepe, ya bụ, epoxy ígwè strand, e nwere ugbu a atọ ụdị epoxy ígwè strand na mba na ụlọ ahịa. Otu bụ eriri nchara epoxy nchara nke otu-waya, ya bụ, wires nchara asaa na eriri igwe na-ekpuchi ya na mkpuchi epoxy iche iche, na ọkpụrụkpụ mkpuchi dị mkpa (ihe dịka 0.1 ~ 0.2mm); Nke abụọ bụ eriri igwe mkpuchi mkpuchi epoxy mkpuchi, ya bụ, akwa akwa akwa nke eriri igwe a na-ekpuchi ya na mkpuchi epoxy, ọ nweghịkwa resin epoxy na-ejuputa oghere dị n'etiti eriri igwe, na ọkpụrụkpụ nke mkpuchi epoxy dị n'èzí bụ. (ihe dịka 0.65 ~ 1.15mm); Nke atọ bụ eriri igwe mkpuchi epoxy jupụtara, nke jupụtara na resin epoxy na elu elu na oghere ahụ, ma bụrụ naanị eriri igwe epoxy nke na-ezute ma ASTM A882/A882M-04a na ISO14655: ụkpụrụ 1999.

A na-eji nwayọọ nwayọọ na-emepụta usoro anchorage nke a na-eme ka ọ dị elu site na mmepe nke ígwè a na-agbanye ọkụ, ha abụọ adịghị ike. N'iji nwayọ tozuo oke nke teknụzụ eriri igwe mkpuchi epoxy mkpuchi, ejirila nwayọ mepụta ma melite sistemụ anchoring ya. Ha abụọ na-arụkọ ọrụ ọnụ, ma etinyere ya n'ọrụ n'ọtụtụ ọrụ owuwu okporo ụzọ dị ka àkwà mmiri ejiri eriri USB, àkwà mmiri na-anọpụ iche, prestressing mpụga, eriri akwa akwa na nkume nkume na-ama jijiji.

Univac New Material Tech.Manufacturing Co., Ltd bụ ọkachamara na-emepụta ihe na onye nkesa nke eriri igwe dị elu na nke dị ala, eriri igwe anaghị agba nchara, eriri igwe na-ekpo ọkụ na-ekpo ọkụ, eriri igwe anaghị agba nchara, eriri igwe nwere mkpuchi epoxy na eriri igwe. Ha na-akwado usoro arịlịka, ịdị mma nke ngwaahịa ígwè prestressed zuru oke na-ezute ụkpụrụ mba ụwa BS 5896: 2012, FprEN 10138: 2009, ASTM A416 / 416M: 2012, ISO 14655: 1999 "Epoxy Coated Steel Grain Wire for Prestressed" chọrọ maka ihe ndị a chọrọ. nke ọkọlọtọ American ASTM A882/A882M-04a "Standard Specification for Filled Epoxy Coated Seven Waya Prestressed Steel Strands"; Usoro arịlịka ejirila nke ọma mepụta usoro eriri USB, usoro ihe eji eme ihe maka ụfọdụ àkwà mmiri, usoro prestressing nke mpụga, usoro akwa akwa akwa na usoro anchorage geotechnical, nke etinyere n'ọtụtụ ọrụ.