Umthengisi wezixhobo zokwakha izisombululo zoomatshini bokwakha kangangeminyaka engama-30.
Ulwimi
Umthengisi wezixhobo zokwakha izisombululo zoomatshini bokwakha kangangeminyaka engama-30.
Isithuba se-vibrator yekhonkrithi kunye nexesha lokungcangcazela zidibene kakhulu. Beka i-poker kude kakhulu kwaye iindawo ezincinci zekhonkrithi zinokufumana ukungcangcazela okuncinci okusebenzayo. Yishiye kwindawo enye ixesha elide kwaye umxube osebenzayo unokuqala ukwahlulahlula. Isisombululo esisebenzayo kukungagcini ngentloko inombolo enye yomlingo, kuba ikhonkrithi inesiqhelo esibi sokungawahoyi amanani omlingo. Endaweni yoko, abaqhubi kufuneka badibanise ububanzi bentloko ye-vibrator, ukusebenza kwekhonkrithi, ukususwa kokuqina kunye neempawu zokudibanisa ezibonakalayo ukuze bagqibe apho kufuneka bafake khona i-poker kunye nokuba baqhubeke nini.
Njengendawo yokuqalisa eluncedo, iWacker Neuson icebisa ukuhambisa iindawo zokuntywila ngokuphindwe kayi- 8-10 ubukhulu bentloko ye-vibrator . Ikwacebisa abaqhubi ukuba baqine de amaqamza omoya ayeke ukunyuka kwaye isandi se-vibrator siyeke ukutshintsha. Ezi mbono zimbini zinika amaqela esayithi into eluncedo ngakumbi kunetshathi yesithuba esimiselweyo: ubalo lokuqala olunokuhlolwa malunga noko kwenziwa yikhonkrithi ngokwenene.
Isithuba esifanelekileyo sokufakwa kwe-vibrator yekhonkrithi kufuneka sivumele iindawo zokungcangcazela ezisebenzayo ezijikeleze iindawo zokufakelwa ezikufutshane ukuba zigqubane. Ukuba azigqubani, imicu yekhonkrithi edibeneyo kakubi inokuhlala phakathi kwazo. Ukuba iindawo zokufakelwa zisondelelene ngokungeyomfuneko, imveliso iyawa kwaye ikhonkrithi edibeneyo ngaphambili inokungcangcazela kwakhona ngaphandle kwenzuzo yokwenene.
Umthetho we-8-10-times-head-diameter unika ubalo olusebenzayo lokuqala. Umzekelo, i-poker ye-38 mm inika uluhlu lokuqala lwesithuba esimalunga ne- 304-380 mm (12-15 in.) . Oku akuthethi ukuba yonke i-vibrator ye-38 mm kufuneka isetyenziswe kuloo sithuba. Ukuxinana kokuqinisa, ukuhambelana kwekhonkrithi kunye nokusebenza kwe-vibrator konke kunokutshintsha umda osebenzayo wesenzo, ngoko ke umqhubi kufuneka aqinisekise ukuba ukufakwa ngakunye kunempembelelo ebonakalayo kwindawo ekufutshane. UWacker Neuson uqaphela ngokukodwa ukuba ukusebenza okusebenzayo kunokwahluka ngokweemeko zokusebenza kwaye ucebisa uvavanyo phantsi kweemeko zokwenyani zendawo yokusebenza.
| Imeko Yendawo | Indlela Yokuqala | Oko Ufanele Ukukujonga |
|---|---|---|
| Ipoker ye-38 mm | Malunga ne-304–380 mm isithuba | Qinisekisa iindawo zokudibanisa ezidibanayo |
| Ukuqinisa okuxineneyo | Sebenzisa intloko encinci kunye nesithuba esikufutshane | I-poker kufuneka idlule ngokukhululekileyo phakathi kweebhari |
| Icandelo elikhulu lekhonkrithi evulekileyo | Intloko enkulu ingavumela isithuba esibanzi | Jonga umda wokwenyani wesenzo |
| Ikhonkrithi eqinileyo | Qala ngononophelo ngokufakela ngokusondeleyo | Lumkela amaqamza aseleyo kunye neendawo ezingahlali kakuhle |
Ubungakanani bentloko bubalulekile kuba iintloko ezinkulu zihlala zichaphazela ikhonkrithi engakumbi, kodwa ezinkulu azibi ngcono ngokuzenzekelayo. UWacker Neuson unika i-30 mm njengomzekelo wefomwork emxinwa kunye ne -58 mm kwiindawo ezinkulu zekhonkrithi. Kwiikholamu okanye eludongeni oluqinisiweyo kakhulu, ukufikelela phakathi kweebhari ngoko ke kunokubaluleka ngaphezu kokugubungela ngokwethiyori. I-poker engenakufikelela kwikhonkrithi ayimangalisi kangako, nokuba ibonakala inkulu kangakanani kwikhathalogu.
Kwabakhi ababuza ukuba ikhonkrithi idlidliza ixesha elingakanani , olona luhlu luluncedo lokuqala yimizuzwana emi-5 ukuya kweli-15 ngokufakwa ngakunye . I-National Precast Concrete Association, ikhankanya isikhokelo sePortland Cement Association, ithi eli xesha liza kubonelela ngokudibanisa okwaneleyo, nangona ixesha langempela liyahluka ngobukhulu be-vibrator, ukusebenza kwekhonkrithi kunye nobunzulu belungu.
Nangona kunjalo, istophuwotshi kufuneka iqinisekise isigqibo somqhubi endaweni yokusitshintsha. Qhubeka nokungcangcazela ngelixa amaqamza amakhulu omoya ephuma kwaye ikhonkrithi ibonakala ngathi ihleli entloko. UWacker Neuson ucebisa ukuba uyeke xa amaqamza engasaphakami kwaye ingxolo yokuntywiliselwa iyeka ukutshintsha. Ngokwesiqhelo, oku kuthetha ukuba umxube omanzi, osebenzayo unokuphendula ngokukhawuleza, ngelixa umxube oqinileyo unokufuna ixesha elide okanye ufune iindawo zokufaka ezikufutshane.
| Umbuzo Wokusebenza | Isalathiso Esisebenzayo | Ukujonga Indawo |
|---|---|---|
| Ixesha elingakanani ngokufaka? | Malunga nemizuzwana emi-5–15 | Amaqamza amakhulu ayayeka kwaye ikhonkrithi iyahlala |
| Kukude kangakanani? | Malunga ne-8–10 × ububanzi bentloko | Iindawo zokungcangcazela ezikufutshane ziyadibana |
| Ukukhawuleza kangakanani ukurhoxisa imali? | Malunga nemizuzwana emi-3 kwi-300 mm nganye | Umngxuma uvala emva kwepoker |
| Isalathiso esiphezulu sokuphakanyiswa | Malunga ne-500 mm | Umaleko opheleleyo uhlala ufikeleleka ngokufanelekileyo |
| Ukungena kwilifti yangaphambili | Malunga ne-50–100 mm | Iileya ezimbini ezintsha ziyahlangana |
Kwanexesha elifanelekileyo lokungcangcazela kwekhonkrithi linokuchithwa ukuba i-poker ikhutshwa ngokukhawuleza kakhulu. Ukurhoxiswa ngokukhawuleza kunokushiya umjelo ngasemva kwentloko ngaphambi kokuba ikhonkrithi ejikelezileyo ibe nexesha lokubuya umva. I-NPCA inika umthetho oluncedo wesithupha malunga nemizuzwana emi-3 kwi-300 mm nganye (1 ft) yokurhoxiswa ngokuthe nkqo . I-vibrator ngokubanzi kufuneka ivunyelwe ukuba itshone phantsi kobunzima bayo ize isuswe kancinci ngelixa ikhonkrithi ivala emva kwayo.
Kungoko ke abaqhubi kufuneka baphephe ukusebenzisa i-poker njengesixhobo sokuhambisa i-concrete. Ukuyirhuqa ecaleni kumxube kunokubangela ukuhlanganiswa okungalinganiyo kwaye kwenza kube nzima kakhulu ukugcina ipateni yokufaka ecwangcisiweyo. Ukufakwa ngokuthe nkqo, ukuhlala okufutshane kunye nokurhoxiswa okulawulwayo kwenza umsebenzi ube lula ukuwuphinda ukusuka kwelinye icandelo lokuthulula ukuya kwelinye.
Iindonga ezinzulu, iziseko kunye nezinye iindawo ezinkulu zihlala zilula ukuzihlanganisa kwiilifti ezilawulwayo kunokuzama ukungcangcazela ubunzulu obugqithisileyo ngaxeshanye. UWacker Neuson ucebisa ukugcina iileya zekhonkrithi nganye nganye zifikelela kwi- 500 mm . Xa uleya omtsha olandelayo ubekwa, i-poker kufuneka ingene malunga ne- 50-100 mm kuleya ungezantsi . Oku kunceda iilifti ezimbini zihlangane kumgca wazo endaweni yokuziphatha njengeeleya ezahlukeneyo.
Loo mgca uncinci kulula ukuwutyeshela xa uxakeke kakhulu, kodwa unomsebenzi obalulekileyo. Ukumisa i-poker ngqo kumda ophakathi kweengqimba kunokushiya ujongano oludibeneyo ngendlela engafanelekanga. Ukuyiqhuba nzulu ngokungeyomfuneko kwizinto esele zihlanganisiwe kuchitha ixesha nje. Injongo kukulawulwa komgca odibeneyo, kungekhona ukumba kwezinto zakudala.
Ububanzi bentloko buluncedo ekuqikeleleni isithuba se-vibrator ye-poker , kodwa ububanzi bodwa abuchazi yonke inkqubo yokungcangcazela. Ukuphindaphinda kunye nobukhulu buchaphazela indlela ukungcangcazela okudluliselwa ngayo kwikhonkrithi entsha. Njengomzekelo wesixhobo, iMultiquip idwelisa i-vibrator yangaphakathi ye-38 mm UM13825 kwi- 200–258 Hz, elingana nokungcangcazela kwe-12,000–15,500 ngomzuzu , kunye nobukhulu be-0.77 mm. La ngamaxabiso athile kwimodeli kunokuba abe ziithagethi ze-universal, kodwa abonisa isizathu sokuba iintloko ezimbini ze-poker ezifanayo zingasebenzi ngokufanayo.
Xa kukhethwa izixhobo, abakhi kufuneka bajonge ngaphaya kwamandla emoto okanye ububanzi bentloko kuphela. Ubungakanani bepoker, ubuninzi bokusebenza, ubude beshaft, ukuhla kwekhonkrithi kunye noyilo lokuqinisa zonke ezi zinto zichaphazela indlela elula ngayo umqhubi ukufezekisa ukuhlanganiswa okuzinzileyo kuyo yonke i-pour.
Ukungcangcazela okungaphantsi kwesandi kudla ngokubonakala ngeepokotho zomoya eziseleyo, iikona ezingazaliswanga kakuhle okanye ikhonkrithi engahlalanga kakuhle ngokujikeleze ukuqina. Impendulo ayikokubamba i-vibrator kwindawo enye ixesha elide; ukufakwa okusondeleyo nokucwangcisiweyo kunokuba luncedo ngakumbi. UWacker Neuson ulumkisa ukuba ukungcangcazela okufutshane kakhulu kushiya umoya ubambekile, ngelixa ukungcangcazela okugqithisileyo kunokukhokelela ekuqhekekeni.
Umgaqo olula ke ngoko kukudibanisa ixesha nokujonga. Qala ngoluhlu lwemizuzwana emi-5 ukuya kweli-15, jonga amaqamza, mamela i-vibrator kwaye ujonge ukuba ikhonkrithi ejikelezileyo izinzile na. Emva koko rhoxa kancinci uze uye kwindawo elandelayo edibanayo. Le ndlela inika abaqhubi indlela ephindaphindwayo ngaphandle kokwenza ngathi yonke ingxubevange yekhonkrithi iziphatha ngendlela efanayo.
Indawo yokuqala eluncedo imalunga ne -8-10 ubukhulu bentloko ye-vibrator . Kwintloko engama-38 mm, oko kulingana ne-304-380 mm. Isithuba sokwenyani kufuneka silungiswe ukuba ukuqinisa, ikhonkrithi eqinileyo okanye uvavanyo lwendawo lubonisa indawo encinci yokungcangcazela esebenzayo.
Malunga nemizuzwana emi-5–15 ngokufakwa ngakunye luluhlu olusebenzayo lokuqalisa. Qhubeka xa amaqamza amakhulu ema kakhulu, ikhonkrithi izinzile kwaye isandi se-vibrator sizinzile.
Kwikhonkrithi entsha ebekwe kwiilifti, malunga ne- 50-100 mm yokungena kwileya yangaphambili inika isalathiso esisebenzayo sokudibanisa la maleya mabini ngexesha lokudibanisa.
Hayi. Iintloko ezinkulu zinokugubungela ikhonkrithi engakumbi, kodwa indawo yokuqinisa kunye nobukhulu bezinto kufuneka kube kuqala. Iintloko ezincinci zihlala ziluncedo ngakumbi kwifom encinci kunye nokuqinisa okuxineneyo, ngelixa iintloko ezinkulu zilungele iindawo ezivulekileyo ngakumbi.
