Iirobhothi ezimbini ze-Hydrodemolition zagqiba ukususwa kwekhonkrithi kwiintsika ze-arena kwiintsuku ze-30, ngelixa indlela yendabuko iqikelelwa ukuba ithathe iinyanga ze-8.
Khawube nomfanekiso wakho uqhuba kumbindi wesixeko ngaphandle kokuqaphela ukwandiswa kwesakhiwo sezigidi zeerandi kufutshane—akukho zithuthi eziya kutshintshwa kwaye akukho kuphazamiseka kokudilizwa kwezakhiwo ezingqongileyo. Le meko iphantse ingaziwa kwizixeko ezikhulu zaseUnited States kuba zihlala ziguquka kwaye zitshintsha, ngakumbi kwiiprojekthi ezilo bukhulu. Nangona kunjalo, olu tshintsho lufihlakeleyo, luzolileyo luyinto kanye eyenzekayo kumbindi wedolophu yaseSeattle, kuba abaphuhlisi bamkele indlela yokwakha eyahlukileyo: ukwanda okuhlayo.
Esinye sezona zakhiwo zidumileyo zaseSeattle, iClimate Commitment Arena, iphantsi kohlaziyo olubanzi kwaye umgangatho wayo uya kuphinda kabini. Indawo ekuqaleni yayibizwa ngokuba yi-Key Arena kwaye iya kulungiswa ngokupheleleyo kwaye iphinde ivulwe ekupheleni kwe-2021. Le projekthi yebhongo yaqala ngokusemthethweni ekwindla ka-2019 kwaye ukususela ngoko ibe yinqanaba lobunjineli obukhethekileyo kunye neendlela zokudiliza. Unokontraka weRedi Services udlale indima ephambili kwinkqubo yenguqu ngokuzisa esi sixhobo sivelisa izinto ezintsha kwisiza.
Ukwandiswa kwesakhiwo phantsi kuphepha isiphithiphithi esibangelwa ukwandiswa okuthe tye kwendabuko-ukulungisa ngokutsha isakhiwo sedolophu kunye nokudiliza izakhiwo ezijikelezileyo. Kodwa le ndlela ikhethekileyo ayiveli kwezi zinto zixhalabisayo. Kunoko, ukuphefumlelwa kuvela kumnqweno kunye nomsebenzi wokukhusela uphahla lwesakhiwo.
Eyilwe ngumyili wezakhiwo uPaul Thiry ukwenzela uMboniso weHlabathi ka-1962, uphahla oluthambekileyo oluphawuleka ngokulula lufumene iwonga lophawu lwembali kuba lwalusetyenziselwa imicimbi yembali neyenkcubeko. Indawo ephawulweyo ifuna ukuba naluphi na uhlengahlengiso kwisakhiwo lugcine izakhi zembali.
Ekubeni inkqubo yokuhlaziya iqhutyelwa phantsi kwe-microscope, yonke inkalo yenkqubo iye yafumana isicwangciso esongezelelweyo kunye nokuhlolwa. Ukwandiswa okusezantsi-ukwandisa indawo ukusuka kwi-368,000 yeenyawo ukuya malunga ne-800,000 yeenyawo-kubonisa imingeni eyahlukeneyo yolungiselelo. Abasebenzi bemba ezinye iinyawo ezili-15 ngaphantsi komgangatho webala langoku kwaye malunga neemitha ezingama-60 ngaphantsi kwesitrato. Ngelixa ufeza le feat, kusekho ingxaki encinci: indlela yokuxhasa i-44 yezigidi zeeponti zephahla.
Iinjineli kunye neekontraki ezibandakanya i-MA Mortenson Co. kunye ne-subcontractor i-Rhine Demolition iphuhlise isicwangciso esinzima. Baya kususa iikholomu ezikhoyo kunye neebhuthi ngelixa befaka inkqubo yokuxhasa ukuxhasa izigidi zeepounds zephahla, kwaye emva koko uthembele kwinkxaso yeenyanga ukufaka inkqubo entsha yenkxaso. Oku kunokubonakala kunzima, kodwa ngendlela ecacileyo kunye nokuphunyezwa kwenyathelo ngenyathelo, bayenzile.
Umphathi weprojekthi wakhetha ukufakela inkqubo yenkxaso yethutyana ukuxhasa uphahla lwebala lemidlalo, uphahla lwezigidi ngezigidi zeeponti, ngelixa kususwa iintsika neebhuthi ezikhoyo. Bathembele kwezi nkxaso kwiinyanga ukufaka iinkqubo ezintsha zenkxaso ezisisigxina. I-Aquajet kuqala yomba phantsi kwaye isuse malunga ne-600,000 cubic metres. ikhowudi. Umhlaba, abasebenzi bemba isiseko esitsha senkxaso. Le nkqubo yeentsika ze-56 yenza i-superstructure esetyenziselwa ukuxhasa okwethutyana uphahla ukuze i-kontrakta ikwazi ukumba kwinqanaba elifunekayo. Inyathelo elilandelayo libandakanya ukudilizwa kwesiseko sekhonkrithi sokuqala.
Kwiprojekthi yokudilizwa kobu bukhulu kunye noqwalaselo, indlela yesando yetshizi yemveli ibonakala ingenangqiqo. Kuthathe iintsuku ezininzi ukudiliza ikholamu nganye ngesandla, kwaye kwathatha iinyanga ezisi-8 ukudiliza zonke iikholamu ezingama-28, iikholamu ezi-4 ezimilise okwe-V kunye nesinqe esinye.
Ukongeza kokudilizwa kwendabuko okuthatha ixesha elininzi, le ndlela inenye into engalunganga. Ukudilizwa kwesakhiwo kufuna ukuchaneka okuphezulu kakhulu. Ekubeni isiseko sesakhiwo sokuqala siya kusetyenziswa njengesiseko seentsika ezintsha, iinjineli zidinga inani elithile lezinto zokwakha (kubandakanywa nentsimbi kunye nekhonkrithi) ukuze zihlale zilungile. Isityumzi sekhonkrithi singonakalisa imivalo yentsimbi kunye nomngcipheko we-micro-cracking ikholamu yekhonkrithi.
Ukuchaneka kunye neenkcukacha eziphezulu ezifunekayo kolu lungiso aluhambelani neendlela eziqhelekileyo zokudiliza. Nangona kunjalo, kukho inketho eyahlukileyo, ebandakanya inkqubo abantu abaninzi abangayiqhelanga.
I-subcontractor ye-Rheinland Demolition Inkampani isebenzise uqhagamshelwano kunye ne-Houston ingcali yokutshiza amanzi i-Jetstream ukufumana isisombululo esichanekileyo, esisebenzayo nesisebenzayo sokuchithwa. I-Jetstream icebise ngeeNkonzo zeRedi, inkampani yenkxaso yenkonzo yoshishino eseLyman, eWyoming.
Yasekwa kwi-2005, iiNkonzo zeRedi zinabasebenzi be-500 kunye neeofisi kunye neevenkile eColorado, Nevada, Utah, Idaho naseTexas. Iimveliso zenkonzo ziquka ulawulo kunye neenkonzo ezizenzekelayo, ukucima umlilo, ukugrunjwa kwe-hydraulic kunye neenkonzo zokucoca ulwelo, ukuqhuma kwe-hydraulic, inkxaso yenguqu yesibonelelo kunye nokulungelelaniswa, ulawulo lwenkunkuma, ukuthutha iilori, iinkonzo zevalve yokhuseleko loxinzelelo, njl. inkonzo yolondolozo eqhubekayo.
Iinkonzo zeRedi zawungqina lo msebenzi kwaye zazisa irobhothi ye-Aquajet Hydrodemolition kwindawo yeArena yokuZibophelela kweMozulu. Ukuchaneka kunye nokusebenza kakuhle, ikontraki yasebenzisa iirobhothi ezimbini ze-Aqua Cutter 710V. Ngoncedo lwe-3D yokubeka intloko yamandla, umqhubi unokufikelela kwiindawo ezithe tye, ezithe nkqo nangaphezulu.
“Eli sisihlandlo sokuqala sisebenza phantsi kolwakhiwo olunzima ngolu hlobo,” utshilo uCody Austin, umphathi wengingqi yeeNkonzo zeRedi. "Ngenxa yeprojekthi yethu yangaphambili yerobhothi ye-Aquajet, sikholelwa ukuba ikulungele kakhulu oku kudilizwa."
Ukuze ichaneke kwaye isebenze kakuhle, umakhi wasebenzisa iirobhothi ezimbini ze-Aquajet Aqua Cutter 710V ukudiliza ezinye iintsika ezingama-28, iimilo ezine ze-V kunye ne-buttress enye kwiintsuku ezingama-30. Kunzima kodwa akunakwenzeka. Ukongeza kwisakhiwo esoyikisayo esijingayo, owona mceli mngeni mkhulu abajongene nawo zonke iikontraka ezikwisiza lixesha.
“Ithayimthebhile ingqongqo kakhulu,” utshilo uAustin. "Le yiprojekthi ekhawulezayo kakhulu kwaye kufuneka singene apho, sichithe ikhonkrithi, kwaye siyekele abanye abasemva kwethu bagqibezele umsebenzi wabo ukuze baqhube ngokutsha njengoko bekucwangcisiwe."
Ngenxa yokuba wonke umntu usebenza kwintsimi efanayo kwaye ezama ukugqiba inxalenye yeprojekthi yakhe, ukucwangcisa ngenkuthalo kunye nokulungelelanisa ngokucophelela kuyafuneka ukugcina yonke into ihamba kakuhle kwaye iphephe iingozi. Ikontraki eyaziwayo i-MA Mortenson Co. ikulungele ukuhlangabezana nomngeni.
Ngexesha leprojekthi apho iiNkonzo zeRedi zathatha inxaxheba, kangange-175 iikontraka kunye neekontraka eziphantsi kwazo zazisesiza ngexesha elinye. Ngenxa yokuba kukho inani elikhulu lamaqela asebenzayo, kubalulekile ukuba ucwangciso lolungiselelo luthathele ingqalelo ukhuseleko lwabo bonke abasebenzi abafanelekileyo. Ikhontrakthi yaphawula indawo ethintelweyo kunye ne-red tape kunye neeflegi ukugcina abantu kwisiza kumgama okhuselekileyo ukusuka kwijethi yamanzi yoxinzelelo oluphezulu kunye nobutyobo kwinkqubo yokususwa kwekhonkrithi.
Irobhothi yeHydrodemolition isebenzisa amanzi endaweni yesanti okanye iijekhi zemveli ukunika indlela ekhawulezayo nechanekileyo yokususa ikhonkrithi. Inkqubo yokulawula ivumela umqhubi ukuba alawule ubunzulu kunye nokuchaneka kokusikwa, okubalulekileyo kumsebenzi ochanekileyo njengale. Uyilo olukhethekileyo kunye ne-vibration-free yeemela ze-Aqua zivumela ikontraki ukuba ihlambulule ngokucokisekileyo imivalo yentsimbi ngaphandle kokubangela i-micro-cracks.
Ukongeza kwirobhothi ngokwayo, iiNkonzo zeRedi nazo zasebenzisa icandelo elongezelelweyo lenqaba ukuze kuhlaliswe ukuphakama kwekholomu. Ikwasebenzisa iimpompo zamanzi ezimbini ze-Hydroblast eziphezulu zokubonelela ngoxinzelelo lwamanzi lwe-20,000 psi ngesantya se-45 gpm. Ipompo ifumaneka kwiimitha ezingama-50 ukusuka emsebenzini, iinyawo ezili-100. Badibanise ngemibhobho.
Lilonke, iiNkonzo zeRedi ziye zadiliza i-250 cubic metres yesakhiwo. ikhowudi. Izinto eziphathekayo, ngelixa ugcina imivalo yentsimbi. 1 1/2 intshi. Iintsimbi zetsimbi zifakwe kwimigca emininzi, yongeza imiqobo eyongezelelweyo yokususa.
“Ngenxa yobuninzi bemigangatho ye-rebar, kuye kwafuneka sinqumle macala omane ekholamu nganye,” utshilo uAustin. Yiyo loo nto irobhothi ye-Aquajet ilolona khetho lufanelekileyo. Irobhothi inokusika ukuya kutsho kubude obuziimitha ezi-2 ngokudlula, nto leyo ethetha ukuba singagqibezela i-2 ukuya kwi-3 1/2 yeeyadi. Ngeyure, kuxhomekeke ekubekweni kwerebar.”
Iindlela eziqhelekileyo zokudiliza ziya kuvelisa inkunkuma efuna ukulawulwa. NgeHydrodemolition, umsebenzi wokucoca ubandakanya ukucocwa kwamanzi kunye nokucocwa kwezixhobo ezingaphantsi. Amanzi aqhumayo afuna ukucocwa ngaphambi kokuba akhululwe okanye ajikelezwe kwakhona ngempompo yoxinzelelo oluphezulu. Iinkonzo zeRedi zikhethe ukwazisa iilori ezimbini ezinkulu zevacuum ezineenkqubo zokuhluza ukuze ziqulathe kwaye zihluze amanzi. Amanzi ahluziweyo akhutshwa ngokukhuselekileyo kumbhobho wamanzi emvula phezulu kwindawo yokwakha.
Isikhongozeli esidala satshintshwa saba sisikhuselo esinamacala amathathu esathi sachithwa ukuze sigcine amanzi aqhumayo nokuphucula ukhuseleko lwesiza sokwakha esixakekileyo. Eyabo inkqubo yokucoca isebenzisa uthotho lwamatanki amanzi kunye nokubeka iliso kwi-pH.
"Siphuhlise inkqubo yethu yokucoca ngenxa yokuba siyenzile kwezinye iisayithi ngaphambili kwaye siqhelene nenkqubo," u-Austin ubonisa. “Xa zisebenza zombini iirobhothi, salungisa iilitha ezingama-40,000. Ishift nganye yamanzi. Sineqela lesithathu eliza kubeka iliso kwimiba yokusingqongileyo kumanzi amdaka, abandakanya ukuvavanya i-pH ukuqinisekisa ukulahlwa okukhuselekileyo.
Iinkonzo zeRedi ziye zadibana nemiqobo embalwa kunye neengxaki kwiprojekthi. Isebenzisa iqela labantu abasibhozo yonke imihla, kunye nomsebenzisi omnye werobhothi nganye, umsebenzisi omnye wempompo nganye, enye yelori nganye yokucoca, kunye nomphathi kunye nengcali yokuxhasa "amaqela" erobhothi amabini.
Ukususwa kwekholomu nganye kuthatha malunga neentsuku ezintathu. Abasebenzi bazifakela ezi zixhobo, bachitha iiyure ezili-16 ukusa kwezingama-20 bediliza isakhiwo ngasinye, baza bafudusa ezo zixhobo bazisa kuluhlu olulandelayo.
I-Rhine Demolition ibonelele ngesikhongozeli esidala esaphinda sasetyenziswa saza sanqunyulwa saba ngamakhaka anamacala amathathu achithwayo,” utshilo uAustin. “Sebenzisa i-excavator ngobhontsi wakho ukususa isigqubuthelo esikhuselayo, uze uye kuluhlu olulandelayo. Intshukumo nganye ithatha malunga neyure, kubandakanya ukuhambisa isigqubuthelo sokhuselo, irobhothi, ukuseta ilori yevacuum, ukuthintela iplastiki echithekileyo, kunye nemibhobho ehambayo.
Ukulungiswa kwebala lemidlalo kweza abantu abaninzi ababenomdla. Nangona kunjalo, inkalo yokudilizwa kwe-hydraulic yeprojekthi ayitsalanga kuphela ingqalelo yabadlulayo, kodwa iphinde yatsala ingqalelo yabanye abasebenzi kwisiza.
Esinye sezizathu zokukhetha ukuqhushumba kwehydraulic yi-1 1/2 intshi. Imivalo yentsimbi ifakwe kwimiqolo emininzi. Le ndlela ivumela iiNkonzo zeRedi ukuba zihlambulule ngokucokisekileyo imivalo yentsimbi ngaphandle kokubangela ukuqhekeka kwe-micro kwikhonkrithi. I-Aquajet "abantu abaninzi bachukumisekile-ingakumbi ngosuku lokuqala," kusho uAustin. “Sineshumi elinesibini leenjineli kunye nabahloli beze kubona ukuba kwenzeke ntoni. Bonke bothuswa kukukwazi kwe [Aquajet robot] ukususa imivalo yentsimbi kunye nobunzulu bokungena kwamanzi kwikhonkrithi. Ngokuqhelekileyo, wonke umntu wachukumiseka, yaye kwakunjalo nakuthi. . Lo ngumsebenzi ogqibeleleyo. "
Ukudilizwa kwe-hydraulic yinkalo enye kuphela yale projekthi yolwandiso olukhulu. Ibala lesithembiso semozulu lihlala liyindawo yokuyila, iindlela ezintsha nezisebenzayo kunye nezixhobo. Emva kokususa i-piers yenkxaso yokuqala, abasebenzi baphinda badibanisa uphahla kwiikholamu zenkxaso ezisisigxina. Basebenzisa iifreyimu zentsimbi kunye nekhonkrithi ukwenza indawo yokuhlala yangaphakathi, kwaye baqhubeke befaka iinkcukacha ezibonisa ukugqitywa.
NgoJanuwari 29, 2021, emva kokupeyintwa kunye nokusayinwa ngabasebenzi bokwakha, i-Climate Promise Arena kunye namalungu e-Seattle Krakens, intsimbi yokugqibela yaphakanyiswa endaweni kumsitho wophahla lwemveli.
U-Arielle Windham ungumbhali kwishishini lokwakha kunye nokudiliza. Ifoto ngoncedo lwe-Aquajet.
Ixesha lokuposa: Sep-06-2021