Iindaba - Ii-H-beams zeBanga loKwakha: Umqhubi oPhambili okhuthaza uPhuhliso lweShishini oluPhezulu

umqadi we-h ogqunyiweyo kubavelisi baseTshayina

Kutshanje, ngenxa yokuqhubela phambili okuqhubekayo kokukhula kwezixeko kunye nokukhawuleziswa kweeprojekthi ezibalulekileyo zeziseko zophuhliso, imfuno yentsimbi yokwakha esebenza kakuhle inyukile. Phakathi kwazo,Umqadi we-H, njengecandelo eliphambili elithwala umthwalo kwiiprojekthi zokwakha, libe ngumqhubi ophambili wokukhuthaza uphuhliso olusemgangathweni ophezulu kwishishini lokwakha, kunye neempawu zalo ezibalaseleyo zoomatshini kunye neemeko zokusetyenziswa ezibanzi ezikhokelela kwindlela entsha kwimarike.

Kwiprojekthi enkulu yokuhlala enezakhiwo ezinde eMpuma China, iqela labantuHEB 150 Imiqadi ye-Hkutshanje ibekwe kulwakhiwo oluphambili lwesakhiwo. Njengemodeli eqhelekileyo yaseYurophu ye-H-beam, i-HEB 150 ithandwa ziiyunithi zokwakha ngenxa yoyilo lwayo olulinganayo lwecandelo, ukumelana okunamandla okugoba kunye nomthamo ozinzileyo wokuthwala umthwalo. "Xa kuthelekiswa namacandelo entsimbi yendabuko, i-HEB 150 inokunciphisa inani leendawo zokudibanisa ngama-30% kwinkqubo yokwakha, inciphisa kakhulu ixesha lokwakha ngelixa iqinisekisa ukhuseleko lwesakhiwo," utshilo unjineli oyintloko weprojekthi. Esi sicelo asiqinisekisi kuphela ixabiso elisebenzayo leemveliso ze-H-beam ezisemgangathweni kulwakhiwo lwezindlu, kodwa sikwabonelela ngereferensi yokukhuthazwa kwezakhiwo zentsimbi ezisemgangathweni kushishino.

Nangona iimodeli ezisemgangathweni zisetyenziswa kakhulu,iimveliso ze-H-beam ezisebenza kakuhleimelwe nguImiqadi ye-ASTM A572-50 Hzikwakhawulezisa ukungena kwazo kwiiprojekthi eziphambili. Kuyaqondakala ukuba imiqadi ye-ASTM A572-50 H inokuqina okugqwesileyo kobushushu obuphantsi kunye nokumelana nokugqwala, kwaye amandla ayo okuvelisa anokufikelela ngaphezulu kwe-345MPa, nto leyo efanelekileyo ngokukodwa kwiindawo zokusebenzela ezinkulu, iibhulorho zeendlela ezinkulu kunye nezinye iiprojekthi ezineemfuno eziphezulu zesakhiwo. Okwangoku, ekwakhiweni kwebhulorho enqumla umlambo eMzantsi China, imiqadi ye-ASTM A572-50 H isetyenzisiwe kwisakhiwo esiphambili se-truss, isombulula ngempumelelo ingxaki yoxinzelelo lokuthwala phantsi kweemeko zemozulu ezinzima kwaye iqinisekisa ubomi benkonzo yebhulorho.

Ukwengeza,Imiqadi yeflange ebanzi ye-ASTM A572-50, njengemveliso evela kwi-H-beam, yandise ngakumbi ububanzi bokusetyenziswa kwe-H-beam kwishishini lokwakha. Ngobubanzi bayo beflange ebanzi, olu hlobo lweflange lunokusasaza ngcono umthwalo kwaye luphucule uzinzo lwesakhiwo. Luye lwasetyenziswa kakhulu ekwakhiweni kwezakhiwo zorhwebo ezinkulu kunye nezityalo zoshishino kwiminyaka yakutshanje. Umntu ophethe ishishini lemveliso yentsimbi uthe: "Kwisiqingatha sokuqala salo nyaka, umthamo we-odolo ye-ASTM A572-50 wide flange beams unyuke nge-40% unyaka nonyaka, kwaye iimveliso zithunyelwe kwiimarike zaseMzantsi-mpuma Asia, zaba yindawo entsha yokukhula kwishishini lethu lokuthumela ngaphandle."

Abantu abanolwazi ngezoshishino babonise ukuba uphuhliso olukhawulezileyo lwe-H-beam yokwakha alubonisi nje kuphela ukuphuculwa kwemfuno yeshishini lokwakha yentsimbi esemgangathweni ophezulu, kodwa lukwakhuthaza uphuhliso lwetekhnoloji kwishishini lentsimbi. Kwixesha elizayo, ngokuphuculwa okuqhubekayo kwemigangatho yesizwe yezakhiwo eziluhlaza kunye nokwakhiwa kwekhabhoni ephantsi, iimveliso ze-H-beam ezisebenza kakuhle, ukhuseleko olungaphezulu kokusingqongileyo kunye nokwahlukahlukana ngakumbi ziya kudlala indima ebaluleke ngakumbi ekukhuthazeni uphuhliso olusemgangathweni kwishishini lokwakha.