Analisis Perhitungan Struktur Atas (Box Girder) pada Fly Over Jamin Ginting dengan Sistem Beton Prategang (“ Studi Kasus “)

Abstract

Pursuant to use of prestressed concrete by chosening form of profile of box girder or PC. Box Girder. by post tension at structure for Flyover Jamin Ginting which casted in place in monolith. Box girder section made by more wide in area for than plate of under so that the in form of trapezium. Long of holey box girder as long as 125 m, consisted of by 3 spans, that is span 55 m one pieces and span 35 m of is two, located in for pillar 4 fulcrums pieces. To ensure that the box girder by hence quality of concrete K-500 have able to arrest;detain the dead burden by xself, dead burden of addition, burden live and earthquake burden, hence require to be conducted by a analysis repeat the calculation of momen of primary of effect of style prategang that happened at concrete prategang, good before loss and hereafter all loss at tendon of cable strand. Later;Then can compare big of momen of effect of style prestressed by momen is laboring ultimit. From analysis result of maximum momen ultimit or momen+ ( effect of self burden , dead burden of addition, burden live, and earthquake burden) in the middle of span is 159597 kN.m, while from big supervisor consultant data of maximum momen ultimit in the middle span is 143437,3 kN.m