Intambo Yokucindezela Intambo Ye-PC Enokhonkolo O ...
Intambo Yokucindezela Intambo Ye-PC Enokhonkolo O ...
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Ucingo lwensimbi olucindezelwe luwucingo lwensimbi olusezingeni eliphezulu olwenziwe ngenduku yensimbi eshisayo egoqwe ngensimbi enekhabhoni ephezulu. Ngemva kokwelashwa kokushisa kanye nokucutshungulwa okubandayo ukuze kuhlangatshezwane nezidingo zokuqinisa ukhonkolo olucindezelwe. Okuqukethwe kwekhabhoni kwalolu hlobo lwentambo yensimbi kungu-0.65% kuya ku-0.85%, kanti okuqukethwe yisibabule ne-phosphorus kokubili kungaphansi kuka-0.035%. Ucingo lwensimbi olucindezelwe lukhiqizwe ezimbonini kusukela ngawo-1920. Ngemva kwamashumi eminyaka yokuthuthukiswa, uchungechunge lwemikhiqizo efanelekile ukusetshenziswa okuhlukene luye lwakhiqizwa.
Ngokombono wencazelo, amandla okudonsa ensimbi yensimbi ecindezelwe ngokuvamile angaphezu kuka-1470MPa. Eminyakeni edlule, izinga lamandla lishintshe kakhulu kusukela ku-1470MPa kanye no-1570MPa laya ku-1670~1860MPa. Ububanzi bentambo nabo bushintshile, kusukela ku-3 kuya ku-5 mm kuya ku-5 kuya ku-7 mm. Lezi zincazelo ziqinisekisa ukuqina nokusebenza kahle kwezinto eziqinisa izakhiwo zekhonkrithi.
Isigaba esisodwa sezintambo ezicindezelwe ngaphambili sihlanganisa ucingo oludonswayo olubandayo, ucingo oluqondile noluthambile, ucingo oluthambile oluphansi, ucingo olugoqekile, kanye nocingo olugoqekile. Lezi zinhlobo zinikeza izici ezahlukene ukuze kuhlangatshezwane nezidingo ezahlukene. Isibonelo, ucingo lwensimbi oludonswayo olubandayo lwaziwa ngobuso balo obubushelelezi kanye namandla aphezulu okuthambekela. Ucingo oluqondile noluthambile lunikeza ukuguquguquka okuhle kakhulu kanye nokusatshalaliswa kokucindezeleka okuthuthukisiwe. Ucingo oluthambile oluphansi lunciphisa ukulahleka kwe-prestress. Ucingo lwensimbi olugoqekile alukwazi ukugqwala, kuyilapho ucingo lwensimbi olugoqekile luthuthukisa ukunamathela kukhonkolo.
Izakhiwo zocingo lwensimbi olucindezelwe ngaphambili zizenza zifunwe kakhulu emkhakheni wokwakha. Amandla alo aphezulu okubamba aqinisekisa ikhono lalo lokubekezelela imithwalo esindayo nokumelana nokuguquguquka. Izinqubo zokukhiqiza ezinembile ziqinisekisa ikhwalithi nokuthembeka okuqhubekayo. Inezinketho eziningi ezitholakalayo ukuze ivumelane nezidingo zephrojekthi ethile. Ucingo lwensimbi olucindezelwe ngaphambili lusetshenziswa kabanzi emabhulohweni, ezakhiweni, ezitimeleni, kanye nasekwakhiweni komgwaqo omkhulu. Ukusetshenziswa kwalo kusiza ukuqinisa izakhiwo zekhonkrithi, kwandisa amandla azo kanye nomthamo wokuthwala imithwalo.
Ngenxa yokuguquguquka kwayo kanye nezakhiwo zayo ezinhle kakhulu, ucingo lwensimbi olucindezelwe ngaphambili lube olunye lwezinhlobo zensimbi olucindezelwe ngaphambili olusetshenziswa kakhulu emhlabeni. Eminyakeni edlule, ukukhiqizwa kwalo kuye kwanda njalo ukuze kuhlangatshezwane nezidingo ezikhulayo zemboni yokwakha. Ngokuhlangabezana njalo nezidingo eziqinile zokuqinisa ukhonkolo olucindezelwe ngaphambili, lolu hlobo locingo lwensimbi luyaqhubeka nokudlala indima ebalulekile ekuqinisekiseni ukuphepha nokuqina kwengqalasizinda ehlukahlukene emhlabeni jikelele.
Isicelo
Njengoba imboni yezinto zensimbi yaseShayina ihamba phambili embonini, ukuhweba ngensimbi kanye ne-logistics kuzwelonke "ibhizinisi elikhulu elinokwethembeka okuhle", amabhizinisi okuhweba ngensimbi yaseShayina, "amabhizinisi azimele ayi-100 aphezulu eShanghai". I-Shanghai Zhanzhi industry Group Co., Ltd., (efinyeziwe ku-Zhanzhi Group) ithatha "Ubuqotho, Ukusebenza, Ukusungula Izinto Ezintsha, Ukunqoba" njengomgomo wayo wokusebenza kuphela, ihlala iqhubeka nokubeka isidingo samakhasimende endaweni yokuqala.
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