Ukufakwa kwezikhonkwane ezingama-helical kubonisa indlela yesimanje, esebenzayo yokwakha izisekelo ezijulile eyisebenzisa amathuluzi ehelical anzulu ukuze idluliswe ngezinsika zensimbi emhlabeni. Ngokwehlukana nezindlela zokufaka ezijwayelekile eziqhutshwa ngamandla okuthintana, izikhonkwane ezingama-helical zisebenzisa ukuhamba okuqhubekayo ukuhamba ngezithasiselo zezakhiwo ezithunyelwa phakathi kwezendlalelo zomhlabathi ezahlukene. Le ndlela ikhethekile emkhakheni wobunjiniyela bezisekelo ngenxa yokwehla kokukh noise ne-vibration, okwenza ilungele izindawo ezithintekayo emvelweni nezindawo zokwakha ezinamandla aphezulu. Umklamo wendawo ye-helical, efana nesikhwama esikhulu, usabalalisa umthwalo ngokuphazamiseka komhlabathi nokuthuthukiswa komthwalo njengoba idlula phansi, ikhanyisa izisekelo ezizinzile zezinto ezivela ezakhiweni zokuhlala, ezihlahleni zokuhweba, kuya emisebenzini yezimboni nezinhlelo zokwakha. Le ndlela inikeza ukuhambisana phakathi kwezimo zomhlaba eziningi futhi inikeza izinzuzo ezinkulu ezindaweni lapho imishini yokufaka ezikhonkwane ejwayelekile ihlangabezana nezithiyo zokusebenza. Ukufakwa kwezikhonkwane ezingama-helical kudinga amathuluzi akhethekile kufaka phakathi izikhungo zokufaka ezikhonkwane ezingama-helical, izinhlelo ze-hydraulic torque, kanye nemishini yokuhlola efanele ukuqinisekisa ukuthi umthwalo ofanele utholakala. Abasebenzi basebenza ngokuqhubekayo ukuhamba kwensika ngenkathi besebenzisa umfutho ophansi ophethwe, bephusha izinsika ze-helical phakathi kwezingqimba zomhlabathi futhi bahlola i-torque yokufaka njengochwepheshe ophambili wokuthuthuka komthwalo. Le ndlela ibonakala iyasebenza kwezimo zomhlaba ezahlukene, kufaka phakathi umhlaba we-clay, izibuyekezo zeshumi, izendlalelo zothuli, nezinhlelo zomhlaba eziyinxushunxushu. Ukuhamba kwemishini kubandakanya ukufaka ezindaweni ezikhawulelwe lapho imishini yokufaka izikhonkwane ezinzima ingasebenzi, futhi uhlelo luhambelana kahle nezindawo zomhlaba ezithambile zidinga izikhathi zokuhamba ezide kanye nezendlalelo zomhlaba eziqinile ezidinga ukufakwa okuphezulu. Ukufaka kuvame Ukwenzeka ezingeni lokucacisa kwe-torque, nokuqinisekiswa kokugcina komthwalo kuqinisekisa ubuqiniso bezisekelo nokuhambisana nemithetho throughout inqubo yokwakha. Izinhlelo zokufaka izikhonkwane ezingama-helical zikhuluma emikhakheni eminingi yokwakha kanye nezidingo ezikhethekile zezakhiwo. Izinhlelo zokuthuthukisa umhlaba zisebenzisa ama-helical anchors ukuze ziqinise izinyathelo, izinhlelo zokusekela eziphakamisayo, kanye nokufaka izinsika ezikhona. Ama-telecommunications towers, izikhungo zokudlulisa ugesi, kanye nezinhlelo zokwakha amandla avuselelekayo zise rely ku-izisekelo ezizimele zokuhelical ukuze ziqhubeke ngokushesha nokuphindaphinda. Imikhakha yokwakha ye-marina neyo-coastal ihlose izisekelo ezizimele kumalimi endaweni yephaphu, ukwakha ukwesekela ezimweni ezinzima zomhlaba, nezakhiwo ezidinga ukuphazamiseka okuncane kwemvelo. Ukuthuthukiswa kwe-infrastructure okubandakanya ukweqa imigudu, izisulu zamasondo, izakhiwo zokusekela amanzi, kanye nezifakazelo zesikhashana kuhlelwe kakhulu ukufuna izikhonkwane ezingama-helical ngenxa yokusebenza kwayo, ukwethembeka kokuphakamisa umthwalo, nokwehla kokuthinteka ezikhungweni ezingomakhelwane. Abakhiqizi bezisekelo kanye nabaphezulu bezobunjiniyela baphakamisa izinhlelo ze-helical piles ukuze batushe umhlinzeki wezinsizakalo ezikhethekile ezihambisana nemikhakha yokwakha.
Izinhlelo zokuphuleka kwe-torque e-hydraulic zimele ukuthuthuka okubalulekile kumathuluzi okuphakela ama-helical screw piles, okuvumela abakhangisi nabachwepheshe bemigodi ukuthi bafinyelele ukubhujiswa okuphezulu nokumelana nokuhluma ezimweni ze-geotechnical ezinzima. Lezi zinhlelo eziq specializidwa zidlulisa amandla okujikeleza kontrolwa ngaphezulu kwemast yokudrila noma i-kelly bar ukuze zishayele ama-anchors e-helical kanye nama-screw piles phansi, zisebenzisa amandla e-hydraulic ukukhiqiza i-torque edingekayo yokuhambisa umhlabathi nokufaka ezindaweni ezijulile eziqhubeka nezinsika ezibuthakathaka uye ezindaweni ezijulile zokuthwala. Indlela ye-hydraulic inikeza izinzuzo ezibalulekile uma kuqhathaniswa nezinhlelo eziphumelelayo zomshini, kufaka phakathi ukuhlinzeka kwe-torque okungaphandle, ukunciphisa ukuvuvukala, ukuqinisa ukulawula komthwalo, kanye nethuba lokushintsha izimo zokufaka ngesikhathi sangempela ngokuya ngencwadi yokubuyekezwa komhlabathi. Inqubo yokufaka isebenzisa amandla ajikelezayo aqhubekayo ahlinzekwa ngama-motors e-hydraulic axhunywe kumapile we-screw noma ama-anchors e-helical nge-shaft yokuqhuba kanye nemithombo eyahlukeneyo. Njengoba ama-blade e-helical ejikeleza, ahambisa umhlabathi ngendlela ye-laterally kanye ne-vertically, edlula i-pile phansi nge-sands ezixhunywe, i-silts, i-clays, kanye nezinhlelo zomhlabathi ezihlangene. Izinhlelo zokuphuleka kwe-torque e-hydraulic zisebenza kahle emhlabathini ojulile, kumatshe agugile, nasezinhlelweni zokufaka ezithambile lapho umthwalo omkhulu utholakala. Umsebenzisi angabheka izidingo ze-torque nokushesha kokudrila, enza ukulungisa ukuze kuhlangabezane nezimo zomhlaba ezihlukile—kubalulekile ekuqinisekiseni ukufakwa kwezinsika okufanele kanye nokuqinisekisa umthwalo wokwakha ngaphandle kokucindezela kakhulu izingxenye ze-pile. Izinhlelo zakamuva zifaka phakathi ukubhekwa kwengcindezi, ama-sensors wokukhalipha, kanye nezinhlelo zokuqinisekisa i-torque ezihlinzeka ngemininingwane yesikhathi sangempela yokufaka ukuze kuqinisekiswe ikhwalithi kanye nemibhalo yokuhambisana. Izicelo zama-screw piles ahamba nge-torque e-hydraulic zifaka izinhlelo zokuhlala, ezokuthengisa, ezimbonini, kanye nezinhlelo ezinzima zemisebenzi. Lezi zinhlelo zigculisile ekwakheni izakhiwo ezikhona, lapho kudalwa ama-monopiles angaphandle, ekwakheni izinsika zezimboni ze-wind turbines kanye nezintambo zokuhambisa, kanye nakwisistimu zamandla avuselelekayo ezidinga ukufakwa kokufakwa kwe-helical anchors okuyiqiniso. Le ndlela ibonakala iyinzuzo ezindaweni ezinoshintsho lwezemvelo lapho ukufakwa okungavuvukali noma kokungaphansi kokuvuvukala kudingeka, kanye nasezindaweni zasemadolobheni lapho kusebenza imikhawulo yephunga. Ngaphezu kwalokho, ukufakwa kwe-pile e-helical okwenziwa ngama-systems e-torque e-hydraulic kukhiqiza ukuncishiswa okuncane, okwenza kube kuhle ezindaweni ezifanele ukusebenza, umhlaba othambile, noma eduze nezinsiza ezikhona. Izincazelo zama-equipment ngokuvamile zifaka phakathi izinhlelo ezincike kumathuluzi, ama-rigs okudrila ahlinzekwe ngama-motors e-hydraulic aphumelelayo, kanye nemishini yamandla ahlukene enokukhiqiza ama-100,000 kuya ku-1,000,000 foot-pounds e-torque kuye ngediameter ye-pile, ubude, kanye nezimo zomhlaba. Ukuhlanganiswa kokulawula i-torque okuqondile, ukulungelelanisa kokuhlukahluka kwemikhakha ye-geotechnical, kanye nezici zokubhaliswa kokufaka sekubeke izinhlelo ezitholakala ngama-torque e-hydraulic njengeteknoloji ekhethwayo kubachwepheshe abafuna ukuqinisekiswa nokusebenza ezinhlelweni zokwakha ezijulile ezindaweni ezinzima zomhlaba.
Izimishini ze-three-point pile drivers eziyitholile nazo zifakwe izikhala ze-screw pile zimela isixazululo esikhethekile futhi esisebenza kahle kakhulu sokufaka ama-helical screw piles ezimeni ze-geotechnical ezinzima. Le mhlanganiso yezobuchwepheshe ixuba ukulawulwa okuqondile kwezinhlelo zokuphakama ze-three-point nezakhiwo zokujikeleza ze-screw pile heads, ivumela abakhankasi ukufinyelela ukufakwa okuphelele kwepalo emasimini asuka kumagquma anothile ukuya kumalimi axubile nezinsalela ze-glacial. Ukuhlela kwe-three-point kusabalalisa umthwalo ngokulinganayo kulezi zikhala ezintathu zokuphakama, kunciphisa ukuhamba nokukhulisa ukuzinza ngesikhathi sokusebenza kanti isikhala se-screw pile sithumela amandla okujikeleza adingekayo ukuze kudlalwe ama-helical flights phakathi kwezendlalelo zomhlabathi ezinqamukayo. Le ndlela ibalulekile kakhulu ezicini ezidinga ukufakwa okuphezulu kuya phakathi kwezinga, njengohlelo lwezindlu ezihlakazekile, i-remedial underpinning, kanye nezakhiwo zokuqinisa ezithile lapho ukufakwa kwemiphumela ejulile kungavela kungafaneleki noma kube nezinkinga. Ama-helical screw piles afakiwe nge-three-point drivers abanga phezulu ezimweni zomhlaba lapho izindlela zokufaka ezijwayelekile zihlulwa khona. Ukuklanywa kwe-helical—okuyinto yokuhlanganiswa kwe-land-auger enkulu enezitsha eziningi ze-helical—kuthatha umhlabathi esikhundleni sokuwudlulisela, kudala ukushelela okuncane nokuphazamiseka kumakhiwomakhalekhukhwini nezinsiza. Lokhu kwenza amasistimu e-three-point screw pile akhombise ubuhle ezinhlelweni zokwakha ezibhekele ku-urban infill, izindawo ezibucayi zesayensi yokwakha, kanye nezifaki eduze kwezisekelo ezikhona. Umshini wokujikeleza uvumela abakhankasi ukuqinisekisa ukujula kokufakwa kwepalo ngokunembile nge-torque monitoring kanye nezilinganiso zokumelana nokujikeleza, kuhlinzeka impendulo yesikhathi sangempela ngaphambi kokukhwadla ukuyogcina amandla omhlabathi nomkhiqizo wepile. Izicelo zihlanganisa izisekelo zemifula, ukwakhiwa kwezinhlawulo, ukusekelwa komsebenzi wephezulu wombhede, kanye nezisekelo zamathayili e-telecom lapho ukufaka ngokunembile neziphetho ezincane zokuphathwa kwemvelo kubalulekile. Imininingwane yezisetshenziswa ze-three-point pile driver systems idinga ukuhambisana ngokucophelela phakathi kwamandla ka-crane, isisindo somshayeli, kanye nezincazelo ze-screw pile ezimweni zesayithi. Izinsiza ze-three-point ngokuvamile zithola ama-screw piles aphakathi kuka-76mm kuya ku-457mm ububanzi, ngezinga lokufakwa elivela ku-3 kuya ku-30 meters kuye ngephrofayili yomhlabathi kanye nezidingo zokuthwala izakhiwo. Izinhlelo zamuva ze-three-point zifaka ukukhonjwa kwe-torque, ama-inclinometers ukuze kuqinisekiswe ubuqotho, kanye nezikhwama ezihlangene zokukhombisa ukuze kuqinisekiswe ukuhambisana nezincazelo zokwakhiwa kwe-geotechnical. Ukuguquguquka kwale teknoloji kuvumela ukuhlela kwemiklamo ye-helical pile—ukulungisa ububanzi beplate, ubukhulu, kanye nesikhala—ukwenza umsebenzi usebenze kahle ezimeni ezithile zomhlabathi ngaphandle kokudinga izisetshenziswa ezihlukahlukene, kuhlinzeka ngezixazululo ezinzuzo zemali kumaphrofayili ahlukahlukene womhlaba kuyo yonke iphrojekthi eyodwa. Ukukhetha ama-three-point pile drivers afinyelekayo ezikhala ze-screw pile kukhombisa ukuzibophezela kwikhwalithi, ukunemba, nokuphathwa kwemvelo ekujuliseni izisekelo. Abakhankasi abasebenzisa le ndlela bathola izinzuzo eziphawulekayo ezifana nokuncipha kokushaywa komhlaba, ukusebenza okulula uma qhathaniswa nokushaywa komoya, kanye nokusebenza okungcono ezindaweni eziqinile lapho ukufinyelela kwemishini ejwayelekile kuncishisiwe. Kubadayisi bezisekelo abacacisa izixazululo ezimeni eziyinkimbinkimbi zoomhubhe nemibono ebalulekile, ama-three-point screw pile systems anikeza ukuhamba okuqondile, okuqinisekisiwe kokufakwa okunembile okulindelwe yizindinganiso zokwakhiwa zansuku zonke, ikakhulukazi ezicini lapho ukufakwa okwenziwe ngendlela ejwayelekile kungavumeli noma kube nezindleko eziphezulu.
Izinsiza ezihlanganisiwe ze-excavator eziklanyelwe ukufakwa kweziqongo ezifakwe ngemikhonto ziwumthombo obalulekile ezintweni zanamuhla zobunjiniyela bezisekelo zeziqongo zepulasitiki, zivumela abaqashi ukuthi bathole izixazululo ezisebenza kahle, ezibiza kancane ekuqiniseni okujulile ezindaweni ezihlukahlukene zomhlabathi nezimo zomhlaba. Lezi zinsiza eziqondile ziguqula ama-excavators ajwayelekile abe imishini ehlosiwe yokufaka ama-screw piles, sinikeza umjikelezo wokudonsela kanye neqhinga elilawulwayo lomoya elidingekayo ukuze kuthuthwe ama-screw piles kube izifunda zokuthwala ezinamandla. Indlela yokufaka ebhodini ye-excavator ikhipha isidingo sama-rotary drilling rigs amakhulu ezinhlelweni eziningi, okwenza ukufakwa kwesikhumbuzo sibe lula ezindaweni ezinomkhawulo wesikhala, ezindaweni ezithintwa kwezokwemvelo, nasezinhlelweni lapho izindleko zokuhamba nemfuneko yokuhlela indawo zifuna izinketho zemishini ezilula. Izinhlelo zokuxhuma ngokuvamile zifaka imishini yokuhamba ye-hydraulic, ama-load cells okusebenzisa isikhathi sangempela, kanye nezikhala ze-leader eziphethwe kahle eziqinisekisa ukuhambisana okucacile kokujula noma okuphumelelayo ngesikhathi sokufakwa, ukuqinisekisa ukuvama okwanele komhlaba kanye nokusebenza okuhle kweziqongo. Inqubo yokufaka ihilela ukujikeleza kwe-screw pile ngenhloso elawulwayo ngenkathi kusebenze uhlelo lok Pressure olulawulwayo, kuvumela ama-helical flights ukuba azibandakanye ngenhloso futhi akhulise umhlabathi ozungezile njengoba i-pile iqhuba ku-deph yomklamo. Le ndlela yokufaka ibonakala ikhululekile ezindaweni ezihlanganiswe kahle, izinsiza ezithambile, izinhlelo ze-silt-clay, kanye nezinhlaka ze-rock ezishintshelwe lapho izindlela ze-impact driving noma ze-vibratory zingase zibe nezinkinga. Idizayini ye-helical thread ye-screw pile isebenza njengomakhenikhali wokusika nokuhlala kanyekanye, ikhipha umhlabathi omncane ngesikhathi sokufakwa futhi inciphise ukuphazamiseka okuxhumene ne-vibration—ukuze kube nenzuzo enkulu ezindaweni ezinamakhulu, ezincane noma lapho ukulawulwa kwe-vibration nokubona kuyizidingo zomkhankaso. Le ndlela yokufaka ejikeleza iphinde ihlinzeke ngezinga eliphezulu lokulawula kokufaka nokuqinisekiswa, njengoba abaqashi belandelela ukumelana nokudonsa, izinga lokufaka, kanye nezindleko zokugcina ukuze kuqinisekiswe amandla e-pile nokufaka okuphelele kwezindawo zokuthwala. Izinsiza ezibekwe ku-excavator ze-screw pile zisebenza ezinhlelweni ezihlukahlukene zabasalela kuhlanganisa ukugcwaliswa kwemigqomo ye-bridge, ama-embankments ezitimela, izisekelo zezakhiwo, izisekelo zeziqongo zokudlulisela, ukufakwa kwamandla avuselelwa, kanye nezinhlelo zokuvuselela ezakhiweni ezikhona. Imishini iyakwazi ukuhlinzeka ngezilinganiso ezihlukahlukene zama-diameters nama-weight, ukusuka ezindaweni ezincane zomphakathi kanye nezitolo ezisikweletu kuze kube kumadivayisi amakhulu neziphatha ezifaka kakhulu. Abafaki bathola izinzuzo ekusebenzeni ngokukhululeka, ukunciphisa izindleko zokuhweba kwemishini, ukuthuthukisa ukufinyelela endaweni, kanye nekhono lokushintsha imishini ebekwe ku-excavator phakathi kwezigaba eziningi zomsebenzi nezinhlelo zokwakha. Ukuhlola izimo zomhlaba kanye nezimpawu kubalulekile ekukhetheni izinsiza, izilungiselelo ze-pile, kanye nendlela yokufaka, kudinga ukusebenzisana okuclose phakathi kwezinhlinzeko zobunjiniyela, abachwepheshe bemishini, kanye nabafaki. Ukuxubana kobuchwepheshe bemishini bokuxhunywa kwe-excavator besimanje namaphinzi wobunjiniyela be-helical piles kuvumela izixazululo zokwakha ezijulile ezithembekile, eziphindaphindekayo, nezisebenza kahle ezizindaweni ezinzima lapho izindlela zokufaka ezivamile ziqhamuka nezikhala.
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