Kukula kwa PC Strands ndi Prestressed steel products anchorage systems

Zogulitsa zitsulo zoponderezedwa zapita patsogolo kwambiri kuyambira 1950s m'zaka zapitazi, pali mfundo ziwiri zazikulu mu chitukuko chake. Choyamba, mphamvu ya zinthu pang'onopang'ono ukuwonjezeka, kotero kuti kuchepetsa kukula ndi kulemera kwa prestressed zigawo zikuluzikulu, ngakhale utachepa ntchito mtengo; Chachiwiri, pamaziko a kupititsa patsogolo mphamvu, tiyenera kulabadira chitukuko cha zipangizo ndi mkulu odana ndi dzimbiri ntchito, kuti patsogolo durability wa prestressed zitsulo zigawo zikuluzikulu ndi kusunga ndalama yokonza.

Ponena za zingwe zachitsulo zolimba kwambiri komanso zochepetsetsa, njira zake zokulirapo zimagawidwa m'magawo anayi: zingwe zachitsulo zosalala komanso zomveka bwino - zingwe zazitsulo zokhala ndi malata ndi zingwe zachitsulo zosamangika - zingwe zachitsulo zosamangika - zingwe zachitsulo za epoxy. M'magawo atatu oyambirira a chitukuko, zida zogwirira ntchito za nangula zomwe zimagwirizana ndi chingwe chachitsulo zimakhala zofanana; Mapangidwe ake, kukonza ndi kupanga kwake kwakhala kwakukulu. Gawo lachinayi lachitukuko, ndiko kuti, chingwe chachitsulo cha epoxy, pali mitundu itatu ya chingwe chachitsulo cha epoxy m'misika yapadziko lonse ndi m'nyumba. Imodzi ndi waya wochepa thupi wosanjikiza epoxy chitsulo chingwe, ndiko kuti, mawaya asanu ndi awiri zitsulo mu chingwe chitsulo yokutidwa ndi epoxy ❖ kuyanika payokha, ndi ❖ kuyanika makulidwe ndi woonda (pafupifupi 0.1 ~ 0.2mm); Chachiwiri ndi chingwe chachitsulo chophimbidwa ndi epoxy, ndiye kuti, chingwe chakunja chachitsulo chimakutidwa ndi zokutira za epoxy, ndipo palibe epoxy resin yomwe imadzaza kusiyana pakati pa zingwe zachitsulo, ndipo makulidwe a zokutira akunja a epoxy ndi. (pafupifupi 0.65 ~ 1.15mm); Chachitatu ndi chingwe chodzaza ndi epoxy coated zitsulo, chomwe chimadzazidwa ndi epoxy resin panja ndi mpata, ndipo ndi chingwe chokhacho cha epoxy chomwe chimakwaniritsa zonse za ASTM A882 / A882M-04a ndi ISO14655: 1999 miyezo.

Dongosolo la nangula wa prestressed limapangidwa pang'onopang'ono ndi chitukuko cha zitsulo zokhazikika, zonse sizingasiyanitsidwe. Ndi kukhwima kwapang'onopang'ono kwa ukadaulo wa filler epoxy coated steel strand, makina ake oziziritsa adapangidwanso pang'onopang'ono ndikuwongolera. Awiriwa amagwirizana wina ndi mnzake, ndipo agwiritsidwa ntchito pomanga milatho yambiri ya misewu yayikulu monga milatho yokhala ndi chingwe, milatho yokhala ndi chingwe, kuwongolera kunja, ndodo zomangira mlatho ndi miyala yodabwitsa.

Univac New Material Tech.Manufacturing Co., Ltd. ndi katswiri wopanga ndi kugawa zingwe zachitsulo zolimba kwambiri komanso zopumula pang'ono, mawaya achitsulo okhazikika, zingwe zazitsulo zoviyitsa zotentha, zingwe zachitsulo zosamangika, zingwe zachitsulo zokutidwa ndi epoxy ndi machitidwe awo ochiritsira, khalidwe lazitsulo zokhazikika zimakwaniritsa miyezo yapadziko lonse BS 5896:2012, FprEN 10138:2009, ASTM A416/416M: 2012, ISO 14655:1999 "Epoxy Coated Steel Grain Wire for Prestress" ya American standard ASTM A882/A882M-04a "Matchulidwe Okhazikika a Epoxy Wodzazidwa Wokutidwa ndi Zingwe Zitsulo Zisanu ndi Ziwiri"; Dongosolo la nangula lapanga bwino chingwe chokhazikika cha chingwe, makina okhala ndi zingwe pama milatho ena okhala ndi chingwe, dongosolo lakunja la prestressing, arch bridge tie system ndi geotechnical anchorage system, yomwe yagwiritsidwa ntchito m'ma projekiti ambiri.