坦桑尼亞(ya)達港碼頭石油(you)儲(chu)罐(guan)設(she)計與建(jian)造工程位于達累斯薩拉姆市庫拉西尼罐(guan)區,距(ju)離中鐵大橋局承建(jian)的(de)(de)(de)尼雷爾大橋約5.1公里(li),是坦桑尼亞(ya)港務局(TPA)投資的(de)(de)(de)又一重要(yao)基礎(chu)設(she)施項(xiang)目。工程內容(rong)涵蓋15個(ge)(ge)油(you)罐(guan),包(bao)(bao)括5個(ge)(ge)汽油(you)罐(guan),6個(ge)(ge)柴(chai)油(you)罐(guan),3個(ge)(ge)航空燃油(you)罐(guan),以及(ji)1個(ge)(ge)接口(kou)罐(guan),總(zong)容(rong)量為(wei)37.8萬立方(fang)米(mi)的(de)(de)(de)設(she)計、采(cai)(cai)購(gou)與建(jian)造,罐(guan)體防腐保溫施工,以及(ji)特殊閥(fa)門采(cai)(cai)購(gou)、管線鋪(pu)設(she),消(xiao)防系(xi)統、電(dian)氣儀(yi)表,給(gei)排(pai)水(shui)系(xi)統等全流程建(jian)設(she),還包(bao)(bao)含罐(guan)外(wai)約5.5公里(li)的(de)(de)(de)長輸管線和過海管道施工。
本次澆筑的(de)儲罐(guan)圓形(xing)承臺直(zhi)徑42.4米(mi),采用(yong)分區分層(ceng)連續澆筑工藝,使用(yong)2臺天泵同(tong)時(shi)(shi)施(shi)工,歷時(shi)(shi)24小時(shi)(shi)完成了(le)1608立(li)方米(mi)混(hun)凝土作(zuo)業。相較矩(ju)形(xing)承臺,圓形(xing)結構(gou)鋼(gang)筋(jin)(jin)排布(bu)(bu)需考慮環向與(yu)放射(she)向受力,計(ji)算和布(bu)(bu)置更為復雜,不(bu)(bu)僅放點定位難度增加(jia),在承臺施(shi)工過(guo)程中,使用(yong)的(de)594種(zhong)不(bu)(bu)同(tong)長度的(de)鋼(gang)筋(jin)(jin)也大(da)大(da)增加(jia)了(le)鋼(gang)筋(jin)(jin)制作(zuo)難度,而鋼(gang)筋(jin)(jin)綁扎間(jian)距小,搭(da)接(jie)長度不(bu)(bu)一、配筋(jin)(jin)率高等問題,都(dou)給施(shi)工過(guo)程帶來了(le)不(bu)(bu)小的(de)挑戰。
為(wei)(wei)此,承(cheng)臺(tai)模板的安裝(zhuang)采用(yong)以直代(dai)曲的方式,克服了線形(xing)要求高,加固難度大等困難,優質高效(xiao)完成工(gong)(gong)(gong)(gong)作任務(wu),為(wei)(wei)承(cheng)臺(tai)順利澆(jiao)筑奠定(ding)了堅(jian)實基礎。項目堅(jian)定(ding)不移(yi)走屬地化(hua)路線,雇傭當地工(gong)(gong)(gong)(gong)人(ren)占(zhan)比約85%,承(cheng)臺(tai)施(shi)工(gong)(gong)(gong)(gong)周期為(wei)(wei)15天(tian),過程中(zhong)當地工(gong)(gong)(gong)(gong)人(ren)占(zhan)比更達到了90%,其中(zhong)不乏一些(xie)在該片區(qu)項目工(gong)(gong)(gong)(gong)作過的“老員工(gong)(gong)(gong)(gong)”,涵(han)蓋(gai)特種(zhong)設備司機、電焊工(gong)(gong)(gong)(gong),木工(gong)(gong)(gong)(gong)、鋼筋工(gong)(gong)(gong)(gong)等各類工(gong)(gong)(gong)(gong)種(zhong)。
項目全體外(wai)籍人(ren)員與(yu)中方(fang)人(ren)員數量比例約為6:1,大量聘請(qing)外(wai)籍員工(gong),不僅為當地人(ren)提(ti)供了就業崗位,同時也大大縮短了施工(gong)適應(ying)期。該項目建成后,可儲備37.8萬立方(fang)米原油(you)(you)或成品油(you)(you),將極大提(ti)升坦桑尼(ni)亞柴油(you)(you)、汽油(you)(you)、航空燃油(you)(you)儲備能(neng)力。該項目作為區(qu)域能(neng)源(yuan)樞紐的一部分(fen),將確保坦桑尼(ni)亞能(neng)源(yuan)供應(ying)的安全和穩定,并顯著(zhu)加(jia)強該地區(qu)與(yu)鄰近地區(qu)以(yi)及(ji)現(xian)有港口設(she)施的連接,為坦桑尼(ni)亞國(guo)際貿易(yi)提(ti)供更(geng)高效(xiao)的能(neng)源(yuan)輸(shu)送通道(dao),推動當地經濟發展。