Chii chinonzi Buckling Restrained Brace?
Iyo Buckling Restrained Brace (iyo ipfupi yeBRB) imhando yemudziyo wekunyorovesa une simba rakawanda rekubvisa simba.Icho chigadziriso chesimbi muchivako, chakagadzirirwa kubvumira chivakwa kuti chikwanise kumira cyclical lateral loadings, kazhinji kudengenyeka-induced loading.Iyo ine mutete simbi core, kongiri casing yakagadzirirwa kuramba ichitsigira musimboti uye kudzivirira kubhuroka pasi peaxial compression, uye nharaunda yekubatanidza inodzivirira kusawirirana kusingade pakati pezviviri.Mafuremu ane braced anoshandisa maBRB - anozivikanwa semafuremu anodzorwa mabhureki, kana maBRBF - ane mabhenefiti akakosha pamusoro pemafuremu akajairwa.
Chibatiso chesimbi chinoshanda sei?
Zvitatu zvakakura zvikamu zveBRB zvinogona kusiyaniswa isimbi yayo musimboti, bhandi-yekudzivirira layer, uye casing yayo.
Nheyo yesimbi yakagadzirirwa kupikisa simba rakazara reaxial rakagadzirwa mukugadzirisa.Nharaunda yaro yepamuchinjikwa inogona kunge yakaderera zvakanyanya kudarika iyo yenguva dzose mabhanhire, sezvo kushanda kwayo kusingabvumirwi nekuputika.Nheyo yacho ine hurefu hwepakati hwakagadzirirwa kubereka inelastically kana pakaitika kudengenyeka kwepasi;uye dzakaoma, dzisingatauri kureba kumativi ose maviri.Kuwedzerwa kwepamuchinjikwa-chikamu chechikamu chisina kubereka chinovimbisa kuti chinoramba chiri elastic, uye nokudaro plastiki inosungirirwa mukati mechikamu chepakati chesimbi yesimbi.Kurongeka kwakadaro kunopa chivimbo chepamusoro mukufanotaura kwemaitiro echinhu uye kutadza.
Iyo bond-yekudzivirira layer inobvisa casing kubva pakati.Izvi zvinobvumira musimboti wesimbi kuramba simba rakazara reaxial rakagadzirwa mubracing, seyakagadzirwa.
Iyo casing - kuburikidza nekusimba kwayo kwekuchinja - inopa tsigiro yekumashure kurwisa flexural buckling yepakati.Inowanzo gadzirwa nekongiri-yakazadzwa nesimbi machubhu.Muitiro wekugadzira wecasing ndeyekupa yakaringana lateral kuzvidzora (kureva kusimba) pakatarisana nesimbi yepakati buckling.
Chii chakanakira bhachi inodzorwa brace?
Zvidzidzo zvekufananidza, pamwe nemapurojekiti ekuvaka apedzwa, anosimbisa zvakanakira mabheji-anodzorwa braced frame (BRBF) masisitimu.Masisitimu eBRBF anogona kuva epamusoro kune mamwe akajairwa dissipative zvimiro zvine ruremekedzo rwepasirese kune mutengo wakanaka nekuda kwezvikonzero zvinotevera:
Mabhureki anodzorwa mabhureki ane simba rekubvisa simba iro rakavandudzwa kubva kune reSpecial Concentrically Braced Frames (SCBFs).Zvakare, nekuti maitiro avo akakwira kupfuura emamwe akawanda seismic masisitimu (R = 8), uye zvivakwa zvinowanzo gadzirwa nekuwedzera nguva yakakosha, mitoro ye seismic inowanzodzikira.Izvi zvinogona kutungamira mukudzikiswa kwenhengo (koramu uye danda) saizi, madiki uye akareruka kubatana, uye diki nheyo dzinoda.Zvakare, maBRB anowanzo kukurumidza kumisa kupfuura SCBFs, zvichikonzera kuchengetwa kwemutengo kune kontrakta.Pamusoro pezvo, maBRB anogona kushandiswa mukuita seismic retrofitting.Pakupedzisira, kana pakaitika kudengenyeka kwenyika, sezvo kukuvadzwa kwacho kwakaiswa pamusoro penzvimbo diki (iyo brace inobereka core), kuongorora mushure mekudengenyeka kwenyika uye kutsiva kuri nyore.
Ongororo yakazvimirira yakagumisa kuti kushandiswa kweBRBF masisitimu, pachinzvimbo chedzimwe nzira dzekudengenyeka kwenyika, kwakagadzira mutengo paskweya tsoka yekuchengetedza inosvika madhora mashanu paskweya tsoka.
Chii chakanakira bhachi inodzorwa brace?
Iyo buckling inodzorwa brace system haingoshandiswe mumapurojekiti matsva ekuvaka, asiwo mapurojekiti ekusimbisa nekuvakazve ezvivakwa zvekare zvinoenderana nekuita kwayo kwakanakisa uye mutengo wakaderera.Minda yekunyorera ndeyekutevera.
Zvivakwa zvepamusoro-soro / Airports / Zvikoro nezvipatara / Musangano uye nzvimbo yekuratidzira / Chivakwa chefekitori yeindasitiri
