Iindaba - Ulwakhiwo-iBanga H-imiqadi: A Core Driver Fueling High-Umgangatho woPhuhliso lweshishini

galvanized h umqadi kubenzi baseTshayina

Kutshanje, ngenkqubela phambili eqhubekayo yokufudukela kwabantu ezidolophini kunye nokukhawuleziswa kweeprojekthi eziphambili zeziseko ezingundoqo, imfuno yentsimbi yokwakha ekumgangatho ophezulu iye yanda. Phakathi kwabo,H-umqadi, njengenxalenye engundoqo yokuthwala umthwalo kwiiprojekthi zokwakha, ibe ngumqhubi ophambili wokukhuthaza uphuhliso oluphezulu lweshishini lokwakha, kunye neempawu zayo ezibalaseleyo zoomatshini kunye neemeko zezicelo ezibanzi ezikhokelela kwindlela entsha kwimarike.

Kwiprojekthi enkulu yendawo yokuhlala ephezulu eMpuma China, ibhetshi yeHEB 150 H-imiqadiisandula ukufakwa kulwakhiwo olungundoqo. Njengomgangatho oqhelekileyo waseYurophu imodeli ye-H-beam, i-HEB 150 ithandwa ziiyunithi zokwakha kuyilo lwecandelo elilinganayo, ukuchasana okugoba okunamandla kunye nomthamo ozinzileyo wokuthwala umthwalo. "Xa kuthelekiswa namacandelo ensimbi yendabuko, i-HEB 150 inokunciphisa inani leendibano zendibano nge-30% kwinkqubo yokwakha, inciphisa kakhulu ixesha lokwakha ngelixa iqinisekisa ukhuseleko lwesakhiwo," watsho injineli eyintloko yeprojekthi. Esi sicelo asiqinisekisi kuphela ixabiso elisebenzayo leemveliso eziqhelekileyo ze-H-beam ekwakhiweni kwendawo yokuhlala, kodwa inikezela ngereferensi yokukhuthazwa kwezakhiwo zetsimbi ezisemgangathweni kwishishini.

Nangona iimodeli eziqhelekileyo zisetyenziswa ngokubanzi,iimveliso eziphezulu ze-H-beamimelwe nguImiqadi ye-ASTM A572-50 Hzikwakhawulezisa ukungena kwabo kwiiprojekthi eziphambili. Kuyaqondwa ukuba imiqadi ye-ASTM A572-50 H inobunzulu obuphezulu bobushushu obuphantsi kunye nokumelana nokugqwala, kwaye amandla abo esivuno anokufikelela ngaphezulu kwe-345MPa, elungele kakhulu iindibano zocweyo ezibanzi, iibhulorho zendlela kunye nezinye iiprojekthi ezineemfuno eziphezulu zesakhiwo. Okwangoku, ekwakhiweni kwebhuloho ewela umlambo eMzantsi China, imiqadi ye-ASTM A572-50 H isetyenziswe kwisakhiwo esikhulu se-truss, ukuxazulula ngokufanelekileyo ingxaki yokuthwala uxinzelelo phantsi kweemeko zezulu ezinzima kunye nokuqinisekisa ubomi benkonzo yebhuloho.

Ukwengeza,I-ASTM A572-50 imiqadi yeflange ebanzi, njengemveliso ephuma kwi-H-beam, baye bandisa ngakumbi umda wesicelo se-H-beam kushishino lokwakha. Ngobubanzi bayo obubanzi be-flange, olu hlobo lwe-boam lunokusasaza kakuhle umthwalo kunye nokuphucula ukuzinza kwesakhiwo. Isetyenziswe ngokubanzi ekwakhiweni kwezakhiwo zorhwebo ezinkulu kunye nezityalo zoshishino kwiminyaka yamuva. Umntu ophethe ishishini lokuvelisa intsimbi wathi: "Kwisiqingatha sokuqala salo nyaka, umthamo womyalelo we-ASTM A572-50 ububanzi be-flange beams unyuke ngo-40% ngonyaka, kwaye iimveliso ziye zathunyelwa kwiimarike zaseMzantsi-mpuma Asia, ibe yindawo entsha yokukhula kwishishini lethu lokuthumela ngaphandle."

Abangaphakathi kwishishini babonisa ukuba uphuhliso olukhawulezayo lwe-H-beam yokwakha alubonakalisi nje ukuphuculwa kwemfuno yoshishino lolwakhiwo lwensimbi ephezulu, kodwa lukhuthaza ukutsha kwezobuchwepheshe kwishishini lensimbi. Kwixesha elizayo, ngokuphuculwa okuqhubekayo kwemigangatho yesizwe yezakhiwo eziluhlaza kunye nokwakhiwa kwekhabhoni ephantsi, iimveliso ze-H-beam ezinomsebenzi ophezulu, ukukhuselwa kokusingqongileyo kunye nokwahlukana okungaphezulu kuya kudlala indima ebaluleke kakhulu ekukhuthazeni ukuphuhliswa komgangatho ophezulu woshishino lokwakha.