Iphayiphi yokwakha ye-tubular ihlanganisa amaprofiles amakhulu amakhulu angenamthamo ansimbi ahlale ahloma phansi ukuze akhe izithiyo eziqhubekayo zokwakhiwa kwemisa eyijulile, ukugcina umhlaba, kanye nokuzinza kwe-geotechnical. Lezi zixhumi zensimbi ezisicaba zihlanganiswa ngokujwayelekile kusetshenziswa insimbi eqinile enezindwangu ezishubile ezivela kumamitha ayi-10 kuya kumamitha ayi-25 nezilinganiso eziqhubekayo ukusuka kumamitha ayi-600 ukuya kumamitha angaphezu kuka-1,200. Ukwakhiwa okungaphakathi kuhlinzeka ngempumelelo yesakhiwo ehluke kakhulu, kuhlanganisa ukumelana kokuphosa okucebile nomthamo ozinzile, okwenza kube kuhle kumisebenzini eyijulile lapho kokubili amandla nokuhambiseka kubaluleke kakhulu. Emsebenzini wokwakhiwa kwemisa eyijulile, amaphayiphi e-tubular anikeza umsebenzi obalulekile. Afakwa kakhulu ezindaweni zokugcina eziphuthumayo nezihamba phambili ezikhethiwe, ahlinzekela izithiyo ezihlala zomoya ngesikhathi sokuhamba kwemiphanga phansi nasemisebenzi yokumba. Ukuze kuhlale kulungiswe, lezi tube zenza isikhumba ngokwakhiwa kwe-diaphragm wall systems, ama-cofferdams, kanye nezakhiwo eziqinile zomhlaba ezisekela amabhuloho, izikhumulo, kanye nezakhiwo zasemanzini. Ezimweni zokuthuthukiswa komhlaba kanye nezinhlelo zokuzinza komhlabathi, amaphayiphi e-tubular afakwa ezindaweni ezinzima, ngokuvamile ethola ngaphezu kwemamitha ayi-60, ebamba izindonga zokugcina futhi ehlinzeka ngokuqinisa kokuhlangabezana nezimo ezinzima ze-geotechnical. Afaneleka kakhulu ekuphathweni kwezimfucuza zomhlaba, lapho ukwakhiwa kwabo okuvalwe kwehlisa ukuvinjelwa kwemvelo ngesikhathi sokukhipha nokwelapha. Ukwethulwa nokufaka amaphayiphi e-tubular kudinga izinsiza ezikhethekile zokuphatha. Ukulethwa okujwayelekile kufaka phakathi ubude bezigubhu eziyi-12 kuya kweziyi-18, noma kunjalo, izigaba zingahlanganiswa endaweni yokwakha kusetshenziswa izixhumi ezinamafutha noma ezibholiweyo ukuze zifinyeleleke ezindaweni ezidingekayo. Ukugcina kudinga izindawo ezivikelwe ukuvikela ukuvuvukala, njengoba ama-profiles e-tubular agcina umswakama ezindaweni zawo ezingenamthamo. Ukufakwa kusebenzisa ama-vibratory pile drivers, ama-impact hammers, noma izinhlelo ze-hydraulic press ezikwazi ukukhiqiza izinyakazo eziphakeme ezidingekayo ukuze ziphumelele umqulu womhlabathi futhi zishaye amabhayiphi amakhulu kumazinga afanele. Izinhlelo zokuphatha indawo ngokuvamile zifaka phakathi ukuwelda izixhumi phakathi kwamaphayiphi asondelene, ukuqeda umswakama ngaphakathi ngesikhathi sokwakha, kanye nezinhlelo zokulandelela isakhiwo ekuqinisekiseni ubunzima bezikhala nezokuhlala. Izigaba ze-tubular sheet piling zifaka phakathi insimbi ejwayelekile (355 MPa amandla okukhululeka), izigaba eziphakeme (450 MPa nangaphezulu), kanye nezinguquko ezikhethekile ezivikelayo ezisebenzisa insimbi yesikhumba noma iziphetho ezishaywe ukuze ziphumelele ezindaweni zasemanzini nezithambile. Izilinganiso zediyamitha kweze-wall-thickness zithinta kakhulu umthamo wesakhiwo kanye nezici zokushayela, kanye nezindonga ezinzima ezikhethwe emhlabathini ogcwele nokuhlakaniphile okulungiswa kwezinto ezihlangene. Izikhala zokukhetha zifaka phakathi ama-angles okujuluka komhlabathi nezinhamba zokugibela ezingenakunaka, izinkinga ezidingekayo, izimo zokuhamba ez lateral ezivela kumthwalo noma umuzwa wamanzi, kanye nezidingo zokuqina kwemvelo. Ochwepheshe bacacisa ubukhulu be-wall obuhlobo phakathi kokubala kwesimo sokuphosa, amandla we-shear, kanye nezizathu zokwakhiwa maqhubekela phambili kuzinhlaka zempahla ezisefanelwe kumaphrofayli emhlabathi. Izindinganiso ze-tubular sheet piling ziphathwa yi-European Norm EN 10249 ye-tubes zensimbi, EN 12700 yokwakhiwa kwe-sheet piling, kanye ne-ASTM A328 ye-specifications ye-steel sheet piling. I-ISO 2394 kanye ne-ISO 19902 zihlinzeka ngemigomo yokwakhiwa kwemibono yokuphuma kanye nezinhlelo zomhlaba ngemibono ethile. Ukuqinisekiswa kwemithetho yendawo yokwakha, izindinganiso ze-geotechnical engineering, kanye nemithetho yokuvikela imvelo kuqinisekisa ukuphepha kwesakhiwo kanye nokusebenza kwesikhathi eside ezinhlelweni ezibalulekile zokwakha.
Iphayiphi yokwakha ye-tubular ihlanganisa amaprofiles amakhulu amakhulu angenamthamo ansimbi ahlale ahloma phansi ukuze akhe izithiyo eziqhubekayo zokwakhiwa kwemisa eyijulile, ukugcina umhlaba, kanye nokuzinza kwe-geotechnical. Lezi zixhumi zensimbi ezisicaba zihlanganiswa ngokujwayelekile kusetshenziswa insimbi eqinile enezindwangu ezishubile ezivela kumamitha ayi-10 kuya kumamitha ayi-25 nezilinganiso eziqhubekayo ukusuka kumamitha ayi-600 ukuya kumamitha angaphezu kuka-1,200. Ukwakhiwa okungaphakathi kuhlinzeka ngempumelelo yesakhiwo ehluke kakhulu, kuhlanganisa ukumelana kokuphosa okucebile nomthamo ozinzile, okwenza kube kuhle kumisebenzini eyijulile lapho kokubili amandla nokuhambiseka kubaluleke kakhulu. Emsebenzini wokwakhiwa kwemisa eyijulile, amaphayiphi e-tubular anikeza umsebenzi obalulekile. Afakwa kakhulu ezindaweni zokugcina eziphuthumayo nezihamba phambili ezikhethiwe, ahlinzekela izithiyo ezihlala zomoya ngesikhathi sokuhamba kwemiphanga phansi nasemisebenzi yokumba. Ukuze kuhlale kulungiswe, lezi tube zenza isikhumba ngokwakhiwa kwe-diaphragm wall systems, ama-cofferdams, kanye nezakhiwo eziqinile zomhlaba ezisekela amabhuloho, izikhumulo, kanye nezakhiwo zasemanzini. Ezimweni zokuthuthukiswa komhlaba kanye nezinhlelo zokuzinza komhlabathi, amaphayiphi e-tubular afakwa ezindaweni ezinzima, ngokuvamile ethola ngaphezu kwemamitha ayi-60, ebamba izindonga zokugcina futhi ehlinzeka ngokuqinisa kokuhlangabezana nezimo ezinzima ze-geotechnical. Afaneleka kakhulu ekuphathweni kwezimfucuza zomhlaba, lapho ukwakhiwa kwabo okuvalwe kwehlisa ukuvinjelwa kwemvelo ngesikhathi sokukhipha nokwelapha. Ukwethulwa nokufaka amaphayiphi e-tubular kudinga izinsiza ezikhethekile zokuphatha. Ukulethwa okujwayelekile kufaka phakathi ubude bezigubhu eziyi-12 kuya kweziyi-18, noma kunjalo, izigaba zingahlanganiswa endaweni yokwakha kusetshenziswa izixhumi ezinamafutha noma ezibholiweyo ukuze zifinyeleleke ezindaweni ezidingekayo. Ukugcina kudinga izindawo ezivikelwe ukuvikela ukuvuvukala, njengoba ama-profiles e-tubular agcina umswakama ezindaweni zawo ezingenamthamo. Ukufakwa kusebenzisa ama-vibratory pile drivers, ama-impact hammers, noma izinhlelo ze-hydraulic press ezikwazi ukukhiqiza izinyakazo eziphakeme ezidingekayo ukuze ziphumelele umqulu womhlabathi futhi zishaye amabhayiphi amakhulu kumazinga afanele. Izinhlelo zokuphatha indawo ngokuvamile zifaka phakathi ukuwelda izixhumi phakathi kwamaphayiphi asondelene, ukuqeda umswakama ngaphakathi ngesikhathi sokwakha, kanye nezinhlelo zokulandelela isakhiwo ekuqinisekiseni ubunzima bezikhala nezokuhlala. Izigaba ze-tubular sheet piling zifaka phakathi insimbi ejwayelekile (355 MPa amandla okukhululeka), izigaba eziphakeme (450 MPa nangaphezulu), kanye nezinguquko ezikhethekile ezivikelayo ezisebenzisa insimbi yesikhumba noma iziphetho ezishaywe ukuze ziphumelele ezindaweni zasemanzini nezithambile. Izilinganiso zediyamitha kweze-wall-thickness zithinta kakhulu umthamo wesakhiwo kanye nezici zokushayela, kanye nezindonga ezinzima ezikhethwe emhlabathini ogcwele nokuhlakaniphile okulungiswa kwezinto ezihlangene. Izikhala zokukhetha zifaka phakathi ama-angles okujuluka komhlabathi nezinhamba zokugibela ezingenakunaka, izinkinga ezidingekayo, izimo zokuhamba ez lateral ezivela kumthwalo noma umuzwa wamanzi, kanye nezidingo zokuqina kwemvelo. Ochwepheshe bacacisa ubukhulu be-wall obuhlobo phakathi kokubala kwesimo sokuphosa, amandla we-shear, kanye nezizathu zokwakhiwa maqhubekela phambili kuzinhlaka zempahla ezisefanelwe kumaphrofayli emhlabathi. Izindinganiso ze-tubular sheet piling ziphathwa yi-European Norm EN 10249 ye-tubes zensimbi, EN 12700 yokwakhiwa kwe-sheet piling, kanye ne-ASTM A328 ye-specifications ye-steel sheet piling. I-ISO 2394 kanye ne-ISO 19902 zihlinzeka ngemigomo yokwakhiwa kwemibono yokuphuma kanye nezinhlelo zomhlaba ngemibono ethile. Ukuqinisekiswa kwemithetho yendawo yokwakha, izindinganiso ze-geotechnical engineering, kanye nemithetho yokuvikela imvelo kuqinisekisa ukuphepha kwesakhiwo kanye nokusebenza kwesikhathi eside ezinhlelweni ezibalulekile zokwakha.
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