Imeko yangoku yoPhuhliso lweNsimbi enomfanekiso we-H
Kwindawo ehlala itshintsha yobunjineli bebhulorho, utshintsho olukhulu luyaqhubeka ngokusetyenziswa okutsha kweIiprofayili ze-H-beamIinjineli kunye namaqela okwakha kulo lonke eli shishini ngoku basebenzisa iimpawu ezikhethekileyo zeUmqadi we-Hiiprofayili, ezidityaniswe noyilo olukhaphukhaphu oluphucukileyo, ukuphucula kakhulu amandla okuthwala umthwalo weebhulorho—okuphawula ixesha elitsha lokusebenza kakuhle, ukhuseleko, kunye nokuzinza kophuhliso lweziseko.
Intshayelelo kunye neenzuzo zentsimbi enomfanekiso we-H
Iiprofayili ze-H-beam, ezaziwa nge-cross-section yazo eyahlukileyo enemilo "H", kudala zaziwa ngokusebenza kwazo okugqwesileyo koomatshini.iiprofayili zentsimbi zemvelinjengee-I-beams, ii-H-beams zine-flanges eziphezulu nezisezantsi ezidityaniswe yi-web etyebileyo, nto leyo ebangela ukusasazwa kwamandla okulinganiselayo. Le nzuzo yolwakhiwo ivumela ii-H-beams ukuba zimelane nokugoba kunye nokugoba ngokufanelekileyo, nto leyo eyenza ukuba zibe lukhetho olufanelekileyo lwezinto ezithwala umthwalo kwiiprojekthi zebhulorho. Nangona kunjalo, kukuhlanganiswa kwemigaqo yoyilo olukhaphukhaphu okuvule amandla azo apheleleyo kwiminyaka yakutshanje.
“Kangangeminyaka emininzi, iinjineli zeebhulorho zazijongene notshintsho: ukuze sinyuse amandla okuthwala umthwalo, besisoloko kufuneka sonyuse ubunzima kunye nomthamo wentsimbi esetyenzisiweyo, nto leyo eyanyusa iindleko zokwakha, yandisa ixesha leprojekthi, kwaye yongeza uxinzelelo kwizakhiwo zesiseko,” ucacisile uGqr. Elena Carter, injineli ephezulu yesakhiwo kwiGlobal Infrastructure Innovations (GII), inkampani ekhokelayo kuyilo lwebhulorho kunye nolwakhiwo. “Ngeeprofayili ze-H-beam kunye noyilo olukhaphukhaphu, siwuchithile loo tshintsho. Ngokwenza ngcono ubukhulu be-H-beams—ukunciphisa izinto ezingafunekiyo kwiindawo ezingezizo ezibalulekileyo ngelixa siqinisa iindawo ezinoxinzelelo olukhulu—senze izakhiwo ezilula kodwa ezikwaziyo ukusingatha imithwalo enzima.”
Zithini iingenelo zoyilo olukhaphukhaphu lwentsimbi enomfanekiso we-H?
“Uyilo olukhaphukhaphu lwee-H-beams aluzange luphucule nje kuphela umthamo womthwalo; lutshintshe yonke inkqubo yokwakha,” utshilo uMark Torres, umphathi weprojekthi yeWest River Crossing Bridge. “Izinto ezikhaphukhaphu zithetha ukuba singasebenzisa iikhreyini ezincinci, sinciphise inani leehambo zokuthutha izinto, kwaye sikhawulezise ukuhlanganiswa kwindawo. Le projekthi igqitywe kwiiveki ezintathu ngaphambi kwexesha elicwangcisiweyo, kwaye sisindise malunga ne-$1.5 yezigidi kwiindleko zokwakha. Kuluntu lwasekuhlaleni, oku kuthetha ukufikelela kwangoko kwindlela yokuthutha ekhuselekileyo nethembekileyo ngakumbi.”
Ngaphaya kokuzuza kweendleko nokusebenza kakuhle, ukusetyenziswa okutsha kweeprofayili ze-H-beam kubunjineli bebhulorho nako kunegalelo kwiinjongo zokuzinza. Ngokunciphisa ukusetyenziswa kwentsimbi, iiprojekthi ezifana neWest River Crossing Bridge zinciphisa ukukhutshwa kwekhabhoni okunxulunyaniswa nokuveliswa kwentsimbi— into ephambili kwimizamo yehlabathi yokunciphisa utshintsho lwemozulu. Ukongeza, uyilo olukhaphukhaphu lunciphisa impembelelo yokusingqongileyo yeziseko zebhulorho, njengoko kufuneka ukumbiwa okuncinci kunye nekhonkrithi ukuxhasa isakhiwo, kunciphisa ukuphazamiseka kwenkqubo yendalo yasekuhlaleni.
Uphuhliso lwexesha elizayo lwentsimbi enomfanekiso we-H
Iingcali zoshishino ziqikelela ukuba le ndlela iya kuqhubeka ikhula njengoko iiprojekthi zeziseko zophuhliso kwihlabathi liphela zibeka phambili ukuqina kunye nokuzinza. I-International Association of Bridge and Structural Engineers (IABSE) isandula ukukhupha ingxelo ephawula ukubaIiprofayili ze-H-beam ezinoyilo olukhaphukhaphukulindeleke ukuba zisetyenziswe kwi-45% yeeprojekthi zeebhulorho eziphakathi ukuya kwezinkulu ngo-2028, ukusuka kwi-15% kuphela ngo-2020.
“Iibhulorho zingumqolo wenethiwekhi yezothutho, kwaye ukusebenza kwazo kuchaphazela ngokuthe ngqo uqoqosho kunye nobomi bemihla ngemihla,” wongezelela uGqr. Carter. “Ukusetyenziswa okutsha kweeprofayili ze-H-beam akusiyo nje inkqubela phambili kwezobuchwepheshe—sisisombululo esijongana nemingeni enzima kakhulu kushishino: ukhuseleko, ukusebenza kakuhle, kunye nokuzinza. Njengoko siqhubeka nokuphucula iindlela zoyilo ezilula kwaye siphuhlisa izixhobo ze-H-beam ezinamandla nangakumbi, siya kukwazi ukwakha iibhulorho ezikrelekrele, ezihlala ixesha elide, nezifanelekileyo ngakumbi ukuhlangabezana neemfuno zezizukulwana ezizayo.”
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Ixesha leposi: Sep-02-2025