Yintoni iBuckling Restant Brace?
I-Buckling Restrained Brace (emfutshane kwi-BRB) luhlobo lwesixhobo sokumanzisa esinamandla aphezulu wokulahla amandla.Yintsimbi yesakhiwo kwisakhiwo, eyilelwe ukuvumela isakhiwo ukuba simelane nokulayishwa okujikelezayo okusecaleni, okuqhelekileyo ukulayishwa okubangelwa yinyikima.Iqukethe i-core slender core, i-concrete casing eyenzelwe ukuxhasa ngokuqhubekayo i-core kunye nokukhusela i-buckling phantsi kwe-axial compression, kunye nommandla we-interface ovimbela ukusebenzisana okungafunekiyo phakathi kwezi zibini.Iifreyimu ezinebraced braced ezisebenzisa iiBRBs - ezaziwa njenge buckling-retrained braced frames, okanye iBRBFs - zineenzuzo ezibalulekileyo ngaphezulu kwezakhelo ezibambeneyo eziqhelekileyo.
Isebenza njani izihlangu zezilima ezinqatyisiweyo?
Amacandelo amathathu amakhulu e-BRB anokwahlulwa ngundoqo wayo wentsimbi, umaleko wokuthintela ibhondi, kunye nesingxobo sayo.
Intsimbi yentsimbi yenzelwe ukuxhathisa i-axial force epheleleyo ephuhliswe kwi-bracing.Ummandla wayo onqamlezileyo unokuba ngaphantsi kakhulu kuneentsimbi eziqhelekileyo, ekubeni ukusebenza kwayo akukhawulelwanga ngokudibanisa.Undoqo uquka ubude obuphakathi olungiselelwe ukuvelisa i-inelastically xa kwenzeka inyikima yezinga loyilo;kunye nobude obuqinileyo, obunganiki mveliso kuzo zombini iziphelo.Ukwandiswa kwendawo enqamlezileyo yecandelo elinganikiyo liqinisekisa ukuba lihlala li-elastic, kwaye ngoko iplastiki igxininiswe kwindawo ephakathi kwentsimbi yentsimbi.Ulungelelwaniso olunjalo lubonelela ngokuzithemba okuphezulu kwingqikelelo yento yokuziphatha kunye nokusilela.
I-bond-preventing layer idibanisa i-casing ukusuka kumbindi.Oku kuvumela intsimbi yentsimbi ukuba ixhathise amandla axial apheleleyo aphuhliswe kwi-bracing, njengoko iyilwe.
I-casing - nge-flexural rigidity - inikezela ngenkxaso yecala ngokuchasene ne-flexural buckling ye-core.Ngokuqhelekileyo yenziwe ngeetyhubhu zentsimbi ezizaliswe ngekhonkrithi.Umgaqo woyilo we-casing kukubonelela ngokuthintela okwaneleyo kwecala (oko kukuthi ukuqina) ngokuchasene nokubethelwa kwentsimbi.
Yintoni i-advanteji yeqhina elithintelweyo ngeplangana?
Uphononongo oluthelekisayo, kunye neeprojekthi zokwakha ezigqityiweyo, ziqinisekisa iingenelo ze-buckling-restrained braced frame (BRBF) iinkqubo.Iisistim ze-BRBF zinokuba phezulu kunezinye izakhiwo eziqhelekileyo zokulahla izinto ngentlonipho yehlabathi yokusebenza kakuhle kweendleko ngezi zizathu zilandelayo:
Iibrayisi ezithintelwe ngamabhanti zinendlela yokuchitha amandla ephucuke kakhulu ukusuka kuleyo yeeFremu eziQinisekisiweyo eziKhethekileyo (SCBFs).Kwakhona, ngenxa yokuba indlela yokuziphatha kwabo iphezulu kuneyoninzi yezinye iinkqubo zenyikima (R=8), kwaye izakhiwo ngokwesiqhelo ziyilwe ngexesha elongezelelweyo elisisiseko, imithwalo yenyikima iba sezantsi.Oku kunokukhokelela ekunciphiseni kwelungu (ikholomu kunye ne-beam) ubukhulu, ukudibanisa okuncinci kunye nokulula, kunye neemfuno ezincinci zesiseko.Kwakhona, ii-BRBs zihlala zikhawuleza ukumisa kune-SCBF, okukhokelela ekongisweni kweendleko kumakhi.Ukongeza, ii-BRBs zinokusetyenziswa kwi-seismic retrofitting.Ekugqibeleni, xa kwenzeka inyikima, ekubeni umonakalo ugxininiswe kwindawo encinci (i-brace's yielding core), uphando lwasemva kwenyikima kunye nokutshintshwa kulula.
Uphononongo oluzimeleyo lugqibe kwelokuba ukusetyenziswa kweenkqubo ze-BRBF, endaweni yezinye iinkqubo zenyikima, kuvelise iindleko zokonga ngonyawo lwesikwere ukuya kuthi ga kwi-5 yeedola zesikwere.
Yintoni i-advanteji yeqhina elithintelweyo ngeplangana?
Inkqubo ye-buckling restrained brace ayisetyenziswa kuphela kwiiprojekthi ezintsha zokwakha, kodwa kunye neeprojekthi zokuqiniswa kunye nokwakhiwa kwakhona kwezakhiwo ezindala kuxhomekeke ekusebenzeni kwayo okugqwesileyo kunye neendleko eziphantsi.Iinkalo zesicelo zimi ngolu hlobo lulandelayo.
Izakhiwo eziphakamileyo / ii-Airports / Izikolo kunye nezibhedlele / iNkomfa kunye neziko lomboniso / isakhiwo somzi-mveliso
