Ukucindezela ngemva kokuphola (post tensioning) kuyindlela eyinkimbinkimbi futhi eyamukelwa kabanzi ekwakheni kwesimanje ethuthukisa kakhulu ukusebenza kwezinto zikakhonkolo. Empeleni, ukucindezela ngemva kokuphola kuhilela ukusetshenziswa kwengcindezi ecindezelayo esakhiweni sikakhonkolo ngemva kokuba ukhonkolo uthelwe futhi usufinyelele amandla athile okuqala, okwenziwa ngokuqinisa izintambo zensimbi ezinamandla aphezulu ezifakwe ngaphakathi kwesakhiwo. Le ndlela iphumelela ekulweni namandla okudonsa ukhonkolo obengahlangabezana nawo ngaphansi kwemithwalo yokusebenza, ngaleyo ndlela inciphisa ukuqhekeka nokugoba kuyilapho ivumela izikhala ezinde kanye namapulangwe azacile. Izinzuzo zokufaka ukucindezela ngemva kokuphola ezakhiweni zikakhonkolo ziningi futhi zihlanganisa ukonga okukhulu kwezinto zokwakha, ukunciphisa isisindo sonke somsebenzi, kanye nokuqina okuthuthukisiwe kwesikhathi eside, okwenza kube yisixazululo esibalulekile ezakhiweni zezentengiselwano, amagaraji ezimoto, amabhuloho, kanye nemibhoshongo yokuhlala. Ngaphezu kwalokho, ipulangwe elihleliwe lokucindezela ngemva kokuphola lingakwazi ukumisa izakhiwo eziyinkimbinkimbi zokwakha kanye nezindawo ezinkulu ezivulekile ngaphandle kwesidingo sezinsika eziningi, linikeza izinzuzo zobuhle nezokusebenza ezaziswa kakhulu ekwakheni kwesimanje. Ngokuphatha ngempumelelo izingcindezi zangaphakathi zikakhonkolo, ukucindezela ngemva kokuphola kuqinisekisa ukuthi isakhiwo sokugcina asiqini nje kuphela kodwa futhi siyakwazi ukumelana nemithwalo ehlukahlukene ezobhekana nayo phakathi nempilo yaso yokusebenza, okuhlanganisa imithwalo ephilayo, amandla omoya, kanye nezehlakalo zokuzamazama komhlaba.

Uma kuqhathaniswa izindlela ze-post tension ne-pre tension, kubalulekile ukuqonda ukuthi zombili lezi zindlela zihlose ukwethula izingcindezi ezinomthelela omuhle kukhonkolo, kodwa zihluka ngokuyisisekelo esikhathini nasendleleni yokuqinisa izintambo. Ekuqiniseni kwangaphambili (pre tensioning), izintambo ziyaqiniswa ngaphambi kokuba ukhonkolo uthelwe, futhi ukubopha phakathi kukakhonkolo nensimbi kudlulisa ingcindezi ngemva kokuqina kukakhonkolo, okuyinqubo evame ukusetshenziswa ezingxenyeni ezenziwe ngaphambilini ezikhiqizwa endaweni elawulwayo yefekthri. Ngokuphambene, i-post tensioning ihilela ukuqinisa izintambo ngemva kokuba ukhonkolo usulaphe, ngokuvamile endaweni yokwakha, kusetshenziswa ama-hydraulic jack adonsa izintambo zibhekane nokhonkolo osewulaphe, namandla edluliswa ngama-anchor angapheli afakwe emaphethelweni eslabhu. Lo mehluko wenza i-post tensioning ifaneleke kakhulu izakhiwo ezithelwa endaweni, amaslabhu amakhulu aphansi, namabhuloho lapho izimo ezithile zendawo nobude obuhlukahlukene bezikhala zidinga indlela yokuqinisa evumelana nezimo futhi eguquguqukayo. Ukukhetha phakathi kwe-post tension ne-pre tension ekugcineni kuncike ezidingweni zephrojekthi njengendlela yokwakha, izithiyo zokuthutha, kanye nesilinganiso esifiswayo sobude nobude, kodwa i-post tensioning inikeza izinzuzo eziyingqayizivele ekwakheni endaweni ezingeke ziphindwe kalula ezinye izindlela. Ukwengeza, izinhlelo ze-post tensioning zivumela ukusetshenziswa kwezintambo ezingaboshiwe (unbonded tendons), ezigcotshwa ngamafutha futhi zimbozwe ngamakhava, zinikeze ukuvikelwa okwengeziwe ekugqwaleni futhi zivumela ukuhlolwa nokushintshwa esikhathini esizayo uma kudingeka.

E-Dezhou Zhongke New Materials Co., Ltd., sisemgqeni wezinto zokuhlanganisa ukhonkolo nobuchwepheshe bokwakha kusukela ngo-2003, futhi uhla lwethu oluphelele lwemikhiqizo ye-post tensioning lubonisa ukuzibophezela kwethu okungantengantengi ekhwalithini, ekusunguleni izinto ezintsha, nasekweneleleni kwamakhasimende. Amasistimu ethu e-post tensioning enzelwe ukuletha ukusebenza okuphezulu kwamandla, esebenzisa izintambo zensimbi ezisezingeni eliphezulu kanye nemihlangano ethuthukisiwe yama-anchor ehlangabezana futhi yeqe amazinga omhlaba wonke wamandla okudonsa nokwethembeka. Ingxenye ngayinye ohlelweni lwethu ikhiqizwa ngokucophelela futhi ihlolwe ngokuqinile ukuze kuqinisekiswe ukuthi izintambo ze-post tension zisebenza kahle ngaphansi kwezimo ezinzima kakhulu, zinikeza onjiniyela bezakhiwo nosonkontileka ukuzethemba abakudingayo ukuze benze amaphrojekthi amakhulu ngokunemba. Ukusetshenziswa kwemikhiqizo yethu yesimanje ye-post tensioning kuholela ekongeni okukhulu kwezindleko emaphrojekthini okwakha ngokunciphisa umthamo kakhonkolo nensimbi yokuqinisa edingekayo, okunciphisa izindleko zokuthenga izinto, izindleko zokuthutha, kanye nezidingo eziphelele zesisekelo. Ngaphandle kwezinzuzo ezingokomnotho ezisheshayo, amasistimu ethu anikela ngezinhlelo zokwakha ezisheshayo ngoba i-post tensioning ivumela amaslabhu amancane kanye nokuphakama okuphakathi kwezitezi okuncishisiwe, okwenza abakhi bakwazi ukuqedela izitezi eziningi ngaphakathi kobude obufanayo besakhiwo futhi basheshise izikhathi zomsebenzi.

Enye yezinzuzo ezibaluleke kakhulu zokukhetha izixazululo zethu zokucindezela ngemuva ukuthuthukiswa kokumelana nokuzamazama komhlaba okunikezwa izakhiwo zikakhonkolo ezindaweni ezivame ukuzamazama komhlaba, lapho ikhono lokumunca nokuchitha amandla ngesikhathi somcimbi wokuzamazama komhlaba libaluleke kakhulu. Inqubo yokucindezela ngemuva yethula amandla acindezelayo angapheli agcina ukhonkolo usesimweni sokucindezelwa ngaphansi kwezimo ezijwayelekile, okuthuthukisa kakhulu ukuguquguquka kanye namandla okuchitha amandla ohlaka lwesakhiwo lapho lubhekene nemithwalo eseceleni. Lesi sici sibaluleke kakhulu kumaslabi okucindezela ngemuva ezindaweni zokupaka izimoto, izibhedlela, izikole, kanye nezakhiwo eziphakeme zokuhlala ezindaweni ezisebenzayo zokuzamazama komhlaba, lapho imithetho yokwakha idinga ukusebenza okuqinile nokuvikela ukuphila. Siphinde sinikeze uhla olubanzi lwezinsiza ezingezansi nezinhlelo zokusekela, okuhlanganisa izingxenye zokubopha ezisezingeni eliphezulu, izinto zokuvikela ukugqwala, kanye nemishini ekhethekile yokufaka ugwayi, konke okuklanyelwe ukusebenza ngokuhambisana nemikhiqizo yethu eyinhloko yokucindezela ngemuva ukuze kuqinisekiswe ukuqina nokugcinwa kwesikhathi eside. Ithimba lethu lobuchwepheshe lisebenza eduze nekhasimende ngalinye ukukhetha iphrofayili yomthambo efanele, amandla okujaha, kanye nokulandelana kokucindezela okufanele isicelo sabo esithile, ukuqinisekisa ukuthi isakhiwo sokugcina asigcini nje ngokuhlangabezana kodwa sidlula izinhloso zomklamo zokuqina, ukusebenza, kanye nokuphila isikhathi eside. Ngokuhlanganisa izithako zethu ezithuthukisiwe zikakhonkolo nezinhlelo zethu zokucindezela ngemuva, sinikeza isixazululo esiphelele esibhekana nakho kokubili izici zempahla zikakhonkolo kanye nokusebenza kwemishini yemithambo, okuholela esakhiweni esihlanganisiwe esisezingeni eliphezulu esimelana nokuhlolwa kwesikhathi.

Naphezu kwezinzuzo eziningi zokucindezela ngemva kokwakha, ngisho nezinhlelo zokucindezela ngemva kokwakha eziklanywe kahle futhi ezakhiwe ngendlela efanele ngezinye izikhathi zingabhekana nezinkinga ezidinga ukuxilongwa ngokucophelela nokungenelela ngesikhathi ukuze kugwenywe ukuwohloka okwengeziwe. Enye yezinkinga ezivame ukubonwa emapulangweni okucindezela ngemva kokwakha ukuqhekeka, okungabonakala njengemifantu evundlile, imifantu eqondile, noma ukuqhekeka okunjengemephu ebusweni bukakhonkolo, okuvame ukubangelwa ukubekwa kwezintambo ngendlela engafanele, ukulandelana kokucindezela okungafanele, noma ukumbozwa kukakhonkolo okunganele phezu kwezintambo zokucindezela ngemva kokwakha. Le mifantu ingase ilimaze ubuhle besakhiwo, kodwa okubaluleke kakhulu, ingadala izindlela zokungena komswakama nama-chloride ukuze afinyelele ezintambweni zensimbi, okungaholela ekugqwaleni nasekulahlekelweni kwamandla okucindezela ngokuhamba kwesikhathi uma kungaxazululwa. Enye inkinga evamile ukuchezuka okweqile, okwenzeka lapho ipulangwe lokucindezela ngemva kokwakha ligoba ngaphezu kwalokho okulindelekile ngaphansi kwemithwalo yokusebenza, okungabangela ukungahambisani kwezihlukaniso, ukunamathela kweminyango, nokuqhekeka kwezinto eziphukayo ezifana namathayili namabhodi e-gypsum. Izinkinga zokuchezuka zingavela ezintweni ezahlukahlukene, okuhlanganisa ukungalinganiselwa kahle kwemiphumela yesikhathi eside yokuncipha nokufinyela, ukungenelela okunganele kwezintambo ku-profile yepulangwe, noma ukusetshenziswa kukakhonkolo one-modulus yokunwebeka ephansi kunalokho okucacisiwe, konke lokhu okudinga ukuhlaziywa okucophelelayo ukuze kutholakale izici eziqondile ezinomthelela. Ukulawulwa kwekhwalithi okufanele ngesikhathi sokufakwa nokucindezelwa kwezintambo zokucindezela ngemva kokwakha kubalulekile ukuze kuncishiswe lezi zingozi futhi kuqinisekiswe ukuthi ipulangwe lisebenza njengoba kuhloswe ngalo kuyo yonke impilo yalo yokuklanywa.

Inkinga enkulu kakhulu engathinta uhlelo lwe-post tensioning ukulimala kwama-tendon ngokwawo, okungadinga izinqubo ezikhethekile zokulungisa ama-tendon ukuze kubuyiselwe ubuqotho besakhiwo seslabhu. Ukugqwala kwezintambo ze-post tension kuyinkinga eyinhloko, ikakhulukazi ezindaweni ezichayeke kumasawoti okuncibilikisa iqhwa, izifutho zasolwandle, noma amakhemikhali ezimbonini, lapho i-grout noma amafutha avikelayo azungeze ama-tendon engonakala ngokuhamba kwesikhathi, okuvumela izinto ezibangela ukugqwala ukuthi zifinyelele endaweni yensimbi. Ukulimala okubangelwa ukubhoboza, ukusika, noma imithwalo yemishini ngesikhathi sokwakha noma sokulungisa nakho kunganqamula noma kwenze buthaka imicu ngayinye ngaphakathi kwe-tendon, okudala ingozi endaweni ethile edinga ukunakwa ngokushesha ngunjiniyela wezakhiwo oqeqeshiwe. Kwezinye izimo, izindawo zokugxila emaphethelweni eslabhu ye-post tension zingase zibe nokwehluleka ukuthwala noma ukuqhekeka kukakhonkolo ngenxa yengcindezi yokucindezela egxile kakhulu, ikakhulukazi uma amandla kakhonkolo ngesikhathi sokucindezela ayephansi kunalokho okucatshangwayo noma uma ukuqiniswa kwe-anchor kungaklanywanga kahle. Ukuthola lezi zinkinga kusenesikhathi ngohlelo lokuhlola nokuqapha njalo kubalulekile ukuze kugwenywe ukwehluleka okuyinhlekelele futhi kuncishiswe izindleko zokulungisa, njengoba izinkinga ezincane ezitholwa futhi zilungiswe ngokushesha zingavamile ukukhula zibe yizinkinga ezinkulu zezakhiwo. Ukuqonda izindlela ezijwayelekile zokwehluleka nezimbangela zazo eziyisisekelo kuvumela abanikazi bezakhiwo namathimba okugcina ukuthi basebenzise amasu okusebenza ngokuqhubekayo andisa impilo yokusebenza yezinhlelo zabo ze-post tensioning futhi aqinisekise ukuphepha nokusebenza okuqhubekayo.

Uma kwenzeka umonakalo ohlelweni lwe-post tensioning, i-Dezhou Zhongke New Materials Co., Ltd. inikeza isethi ephelele yezixazululo zokulungisa ezithuthukisiwe ezenzelwe ukubuyisela amandla aphelele nokusebenza kahle kwesakhiwo esithintekile ngokuphazamiseka okuncane emisebenzini eqhubekayo. Ezimweni ezibandakanya umonakalo wendandatho yensipho otholakala endaweni ethile, njengentambo eyodwa ephukile noma ukugqwala okuncane, indlela yethu elula yokulungisa ngokuhlanganisa inikeza ikhambi elisebenza kahle kakhulu nelingabizi kakhulu eliqeda isidingo sokushintshwa kwendandatho yensipho ngokuphelele. Le ndlela ihlanganisa ukuveza ngokucophelela ingxenye eyonakele yezintambo ze-post tension, ukususa ingxenye eyonakele, nokufaka isixhumanisi somshini esixhuma iziphetho ezimbili ezinempilo zendandatho yensipho, ngaleyo ndlela kubuyiselwe ukuqhubeka kokuqina nokubuyisela amandla e-prestress esitebhisini. Ukulungiswa ngokuhlanganisa kwenziwa kusetshenziswa imishini ekhethekile ye-hydraulic kanye nama-coupler enziwe ngobuchule obuphezulu aklanyelwe ukuthuthukisa amandla aphelele okuqina kwendandatho yensipho yasekuqaleni, okuqinisekisa ukuthi ingxenye elungisiwe isebenza ngokufana nezindawo ezingezonakele ezizungezile ngaphansi kwemithwalo yonke yokuklama. Ochwepheshe bethu abaqeqeshiwe balandela izinqubo eziqinile zokulawula ikhwalithi phakathi nomsebenzi ngamunye wokulungisa ngokuhlanganisa, okuhlanganisa ukuqinisekiswa kwezitifiketi zezinto, ukulinganisa i-torque yezixhumanisi zomshini, kanye nokubhalwa kwemisebenzi yonke yokulungisa ukuze kugcinwe umlando wephrojekthi.

Ngenxa yezimo zomonakalo omkhulu, njengokuqhekeka okuphelele kwethendoni enqamula umkhawulo weslabhu noma isidingo sokwenza indawo entsha eslabhu ekhona ye-post tension ngenxa yezizathu zemishini noma zezakhiwo, sinikeza izixazululo eziyinkimbinkimbi zokusika islabhu ezibandakanya ukukhulula ngokucophelela nokubuyisela amathendoni athintekile ukuze kususwe ukhonkolo kugcinwe ubuqotho besakhiwo seslabhu ezungezile. Le nqubo iqala ngokuhlolwa okuphelele kwesakhiwo yithimba lethu lobunjiniyela, elihlaziya ukuhlelwa kwamathendoni akhona, amandla okucindezela, kanye nejometri yeslabhu ukuze kuthuthukiswe uhlelo olunemininingwane lokusika olunciphisa ubungozi futhi luqinisekise indawo yokusebenza ephephile. Inqubo yokusika ibandakanya ukusetshenziswa kwama-jacks akhethekile okucindezela ukuze kukhululwe ithendoni ngayinye ngendlela elawulwayo, elandelanayo, ngemva kwalokho amathendoni aveziwe ayasikwa futhi abuyiselwe emingceleni emisha yeslabhu kusetshenziswa ama-anchor e-post tension anamandla amakhulu afakwa kukhonkolo oqinisiwe noma emishanini emaphethelweni. Uma indawo entsha yeslabhu isakhiwe futhi ukhonkolo ozungezile usufinyelele amandla anele, amathendoni abuyiselwe ayacindezelwa kabusha emandleni okuqala omklamo, futhi uhlelo luhlolwe ngokucophelela ukuze kuqinisekiswe ukuthi wonke ama-anchor ahlezi kahle nokuthi islabhu isebenza njengoba kulindelekile. Kuso sonke isigaba senqubo yokulungisa, sibeka phambili ukuphepha kwabasebenzi nabahlali bezakhiwo, sihambisana namazinga aqinile embonini futhi sinikeza ukuqapha okusaqhubekayo kokunyakaza kweslabhu, amandla ethendoni, kanye nokucindezeleka kukakhonkolo ukuze kutholwe noma yikuphi okungajwayelekile ngaphambi kokuba kube yinkinga. Indlela yethu ebanzi iqinisekisa ukuthi ngisho nezinkinga eziyinselele kakhulu ze-post tension zixazululwa ngempumelelo, kwandiswe impilo yokusebenza yesakhiwo futhi kugwenywe izindleko ezinkulu ezihambisana nokushintshwa kweslabhu ngokuphelele noma ukubhidlizwa.

Ukukhetha uhlelo olufanele lwe-post tensioning kanye nokuqinisekisa ukuqaliswa kwalo ngempumelelo kudinga ulwazi olukhethekile kanye namava anganikezwa yithimba elizinikele lochwepheshe, yingakho i-Dezhou Zhongke New Materials Co., Ltd. inikezela ngezinsizakalo zokubonisana ezenziwe ngokwezidingo zakho kuzo zonke izigaba zephrojekthi yakho, kusukela ekwakhiweni kokuqala kuze kube sekwakhiweni nasekugcinweni kwesikhathi eside. Ochwepheshe bethu bezobuchwepheshe basebenza ngokubambisana nonjiniyela bezakhiwo, abaklami bezakhiwo, kanye nosonkontileka ukuze bahlole izidingo eziqondile zephrojekthi ngayinye, becabangela izinto ezifana nobude besikhala, izidingo zomthwalo, ukuhlukaniswa kwezindawo zokuzamazama komhlaba, izimo zokuchayeka emvelweni, kanye nezithiyo zohlelo lokwakha. Ngesikhathi senqubo yokubonisana, sinikeza izincomo ezinemininingwane mayelana nokuhlelwa kwethenda, ubukhulu bamandla okucindezela, izidingo zamandla kakhonkolo, kanye namasu okuvikela ukugqwala, konke okwenziwe ukuze kuthuthukiswe ukusebenza kanye nokonga kwezindleko kwe-post tension slab. Siphinde sinikezele ngosizo lobuchwepheshe endaweni yokusebenza ngesikhathi sokufaka nokusebenza kokucindezela, siqinisekisa ukuthi izisebenzi zakho ziqeqeshwe kahle ekuphatheni nasekucindezeleni izintambo ze-post tension, nokuthi wonke umsebenzi uhambisana nemibhalo yedizayini evunyiwe kanye namakhodi okwakha afanele. Ukuzinikela kwethu ekwenzeni okuhle akugcini ngesigaba sokuqala sokwakha, njengoba siqhubeka nokuhlinzeka ngosizo oluqhubekayo lwezinhlelo zokuhlola, zokuqapha, kanye nokugcina, ezisiza ukugcina ubuqotho besikhathi eside bohlelo lwakho lwe-post tensioning.

Izinhlangano ezifuna ukuhlola amandla aphelele emikhiqizo yethu yokucindezela ngemva kokwakha nezinsizakalo, siyakumema ukuthi ubhekane nohlu lwethu olubanzi lwezixazululo ku-IMIKHIQIZO ikhasi, lapho uzothola khona imininingwane enemininingwane yobuchwepheshe, izifundo zamacala, nemihlahlandlela yokusebenzisa yomugqa wethu ophelele wezinhlelo eziphezulu. Ungafunda futhi ngomlando ocebile wenkampani yethu, izikhungo zethu zocwaningo nentuthuko ezisezingeni eliphezulu, nokuzibophezela kwethu ekhwalithini ngokuvakashela i-MAYELANA NATHI ikhasi, elinikeza umbono ophelele wamandla ethu okukhiqiza, izitifiketi, kanye nezinkomba zamaphrojekthi abalulekile. Ukuze uhlale unolwazi ngezinto ezintsha zakamuva kubuchwepheshe bukakhonkolo kanye nentuthuko yokucinwa kwe-post tensioning, siyakukhuthaza ukuthi uhlole i-IZINDABA ikhasi, elinezihloko ezivuselelwa njalo mayelana nezitayela zemboni, izinqubo zokwakha eziphambili, kanye nolwazi lobuchwepheshe. Ukuze uthole usizo olusheshayo ngesidingo esithile sephrojekthi noma uhlele ukuxoxa nomunye wochwepheshe bethu be-post tensioning, sicela uvakashele i-Ukusekela ikhasi ukuze uthole imininingwane ephelele yokuxhumana kanye nefomu elilula lokubuza elizokuxhuma ngqo nethimba lethu lochwepheshe. Sibheke phambili ekusebenzisana nawe ukuletha izixazululo eziphakeme ze-post tensioning ezithuthukisa ukuqina, ukuphepha, kanye nenani lezakhiwo zakho zikakhonkolo eminyakeni eminingi ezayo.

I-Post tensioning iyindlela yokuqinisa ukhonkolo ngokucindezela izintambo zensimbi ezinamandla aphezulu ngemva kokuba ukhonkolo usulukhuni, okubeka ukhonkolo esimweni sokucindezelwa okumelana namandla okudonsa avela emithwalweni esetshenzisiwe. Izintambo ngokuvamile zigcinwa emapayipini noma emibhobheni, futhi ngemva kokuba ukhonkolo usufinyelele amandla anele, ama-hydraulic jack adonsa izintambo ngamandla anqunyiwe, bese kugxilwa endaweni ngama-anchor angapheli. Lokhu kucindezela kwangaphambili kunciphisa ukuqhekeka, kunciphisa ukugoba, futhi kuvumela izikhala ezinde kanye namapulangwe amancane uma kuqhathaniswa nokhonkolo oqinisiwe ngendlela evamile.

I-slab ye-post tension inikeza izinzuzo eziningi ezibalulekile, okuhlanganisa ukuncipha kobukhulu be-slab, ukwehla kwesisindo sonke sesakhiwo, kanye nokusetshenziswa kwezinto ezincishisiwe, okuholela ekongeni izindleko zikakhonkolo nokuqiniswa kwensimbi. Ikwenza futhi ikwazi ukuhlinzeka ngezikhala ezinde ezingenazinsika eziphakathi, inikeze ukuguquguquka okukhulu kwezakhiwo kanye nendawo esetshenziswayo. Ngaphezu kwalokho, ama-slab e-post tension abonisa ukulawulwa okuthuthukisiwe kwemifantu, ukusebenza okuthuthukisiwe kokugoba, kanye nokuqina okuphezulu, okubenza bafaneleke kahle ezindaweni zokupaka izimoto, izakhiwo eziphakeme, kanye nezitezi zezimboni.

Izintambo zokucindezela ngemuva, ezaziwa nangokuthi ama-tendon, zakhiwa izintambo eziningi zensimbi ezinamandla aphezulu ezihlanganiswa ndawonye futhi zibekwe ngaphakathi kwepayipi noma isembozo ngaphambi kokuba kuthululwe ukhonkolo. Ngemuva kokuba ukhonkolo usulungile, izintambo ziyacindezelwa kusetshenziswa ama-hydraulic jack, futhi amandla adluliselwa ohlakeni lukakhonkolo ngokusebenzisa ama-anchorage angapheli, okudala ingcindezi ecindezelayo ehlanganisa izingcindezi zokudonsa ezibangelwa imithwalo yamandla adonsela phansi kanye nemithwalo ephilayo. Lolu hlelo lokuqinisa olusebenzayo luvumela i-slab ukuthi ithwale imithwalo enzima ngaphezu kwezikhala ezinde kuyilapho igcina ubuncane bobukhulu bayo.

Umehluko omkhulu phakathi kwe-post tension ne-pre tension usezikhathini zokuqiniswa kwemisipha ngokuphathelene nokuthululwa kukakhonkolo. Ekuqinisweni kwangaphambili (pre tensioning), imisipha iyaqiniswa ngaphambi kokuba ukhonkolo uthululwe, futhi ingcindezi idluliselwa ngokubopha ngemva kokuqina kukakhonkolo, lokhu kuvame ukusetshenziswa ezingxenyeni ezenziwe ngaphambilini ezikhiqizwa efektri. Ekuqinisweni kwangemva (post tensioning), imisipha iyaqiniswa ngemva kokuba ukhonkolo usulungile, kusetshenziswa ama-anchor ukudlulisa amandla kukhonkolo, lokhu kufaneleka kakhulu ezitebhisini ezithululwa endaweni, amabhuloho, nezakhiwo ezakhiwa endaweni lapho kudingeka khona ukuguquguquka ekwakheni.

Izimpawu ezijwayelekile zomonakalo zihlanganisa ukuqhekeka okubonakalayo ebusweni beslabhu, ikakhulukazi ukuqhekeka okuphambene noma imephu ezindaweni ezizungeze izintambo, kanye nokugoba okweqile okubangela izitezi ezingalingani noma iminyango enamathelayo. Ezinye izinkomba zihlanganisa ukugqwala okusondelene nezindawo zokubamba, ukuqhekeka noma ukuphahlazeka kukakhonkolo emaphethelweni eslabhu, futhi ezimweni ezinzima, izintambo eziveziwe noma eziphukile ezingase ziphume eslabhuni. Ukuhlolwa okuvamile ngamehlo kanye nokuhlolwa kwezakhiwo ngezikhathi ezithile kubalulekile ukuze kutholakale lezi zinkinga kusenesikhathi futhi kugwenywe ukonakala okukhulu.

Imisipha eyonakele ingavame ukulungiswa kusetshenziswa izinhlelo zokuhlanganisa ezingama-mechanical ezixhuma iziphetho ezinempilo zemisipha enqanyuliwe noma egqwalile, ibuyisela amandla ayo okudonsa ngaphandle kwesidingo sokushintshwa ngokuphelele. Ukulungisa kuhilela ukuveza ingxenye eyonakele, ukususa ingxenye eyonakele, nokufaka i-splice coupler enamandla aphezulu enziwe ukuthi idonse ngamandla omklamo wokuqala. Umonakalo omkhulu obandakanya ukusikwa kweslabhu, kusetshenziswa inqubo elawulwayo yokwehlisa ukudonsa nokubuyisela ukugxilisa ukuze kususwe ukhonkolo ngokuphephile futhi kubuyiselwe uhlelo lwe-post tensioned ngama-anchor amasha nokusebenza kokudonsa.

Yebo, kodwa izinguquko ezinjengokusika izimbobo zamapayipi, izitebhisi, noma ukungena kwemishini zidinga ukuhlela kobunjiniyela ngokucophelela kanye nokwenziwa okukhethekile ukuze kugwenywe ukuphazamiseka kobuqotho besakhiwo sesilabhu. Inqubo ihlanganisa ukuthola izintambo ezikhona, ukuzikhulula ngokulandelana okulawulwayo, ukuzisika nokuzibuyisela emingceleni emisha yesilabhu, bese kugcizelelwa kabusha uhlelo ukuze kuhambisane namandla okuqala omklamo. Lo msebenzi kufanele wenziwe ochwepheshe abanolwazi besebenzisa imishini ekhethekile ukuze kuqinisekiswe ukuphepha nokuhambisana namakhodi okwakha.

Ukuqhekeka ku-slab ye-post tension kungabangelwa izinto eziningi, okuhlanganisa amandla anganele e-post tensioning, ukubekwa kwe-tendon noma i-drape okungafanele, ukumbozwa kukakhonkolo okunganele, ukufinyela kwangaphambi kwesikhathi, noma ukulayisha ngokweqile ngaphambi kokuba ukhonkolo uphelele. Izindlela zokuvikela zihlanganisa ukulandela izinqubo ezifanele zokuklama nokwenza imininingwane, ukusebenzisa ukhonkolo wekhwalithi ephezulu onezici zokufinyela eziphansi, ukuqinisekisa ukulandelana okufanele kokucindezela namazinga amandla, kanye nokuhlinzeka ngokunakekelwa nokuvikelwa okwanele ezigabeni zokuqala zokwakha. Ukuhlolwa okuvamile kokulawula ikhwalithi kusiza ukuhlonza izinkinga ezingaba khona ngaphambi kokuba ziholele ekuqhekekeni okukhulu.

Uma izinhlelo zokucindezela ngemuva (post tensioning) ziklanywe futhi zakhiwe kahle ngokuvikelwa okufanele ekugqwaleni, zingahlala iminyaka engu-50 noma ngaphezulu ngokugcinwa okuncane. Ukugcinwa okuvamile kuhlanganisa ukuhlola ngeso izindawo zokubambelela (anchorages) nezintambo eziveziwe (exposed tendons), ukuqapha izimpawu zokugqwala noma ubunzima, kanye nokugcina izinhlelo zokukhipha amanzi zihlanzekile ukuze kugwenywe ukunqwabelana kwamanzi ezingqimbeni zamatshe (slab surfaces). Ezindaweni ezinobungozi obukhulu njengamagaraji ezimoto noma izindawo ezisogwini lolwandle, kunconywa ukuthi kwenziwe ukuhlolwa okuvamisile kanye nezinyathelo zokuvikela ekugqwaleni ezisebenzayo ukuze kuqinisekiswe ukuphila isikhathi eside nokuphepha.

I-Dezhou Zhongke New Materials Co., Ltd. ihlanganisa ulwazi lweminyaka engaphezu kwamashumi amabili embonini kanye nomlando oqinisekisiwe wokuletha izithako zikakhonkolo ezinokusebenza okuphezulu kanye nezixazululo zokwelula ngemuva kokuqina emaphrojekthini emhlabeni wonke. Imikhiqizo yethu ikhiqizwa ngaphansi kwamazinga aqinile okulawula ikhwalithi, futhi ithimba lethu lobuchwepheshe linikeza ukwesekwa okuphelele, kusukela ekuboniswaneni ngedizayini yokuqala nokukhethwa komkhiqizo kuya kosizweni lokufakwa endaweni kanye nesiqondiso sokunakekela isikhathi eside. Ngokukhetha izixazululo zethu, uzuza ekuthembekeni okuphezulu komkhiqizo, imiphumela yokwakha engenazindleko, kanye nobambiswano oluzinikele olugxile empumelelweni yephrojekthi yakho.