Distribusi Tegangan-Regangan pada Tahap Konstruksi Struktur Atas Jalan Layang Tol BORR (Bogor Outer Ring Road) Seksi IIA Span P6 – P12
Chamsudi, Adam Pahlevi
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Land transportation network system consists of road and bridge, both of them has important role in connecting each region, in addition to support the transportation activity inside. Bogor city government had planned construction of Elevated Toll Road, Bogor Outer Ring Road (BORR) Section IIA on Kedunghalang – Kedungbadak roads to reduce the congestion occurs in that region currenly. The constructin concept is segmental bridge and precast segmental box girder as main component, construction method which used is “span by span erection with launching gantry”. The purpose of this research is to analyze the stress-strain and displacement that occurs on top of structre when the construction stage takes place. The methods of this research are collecting data, modelling in CSI Bridge V15, and analysis of stress-strain distribution. During the construction process, the entire structure of the box girder and column are secure against stress and compressive strain, but with the addititonal condition which is most of box girder structure and all of column structure is unsafe to stress and tensile strain. Compressive stress, tensile stress, compressive strain and tensile strain that occurs in span 2 of box girder (76 614 mm distance) after the construction steps are finished is represents respectively 2122.39 kN/m2, 3412.96 kN/m2, 7.01E-05, and 1.13E-04. In addition, the compressive stress, tensile stress, compressive strain and tensile strain that occurs in column 2 side A after constructions work is finished, the results gained are presented continously as 3632.5 kN/m2, 5708 kN/m2, 1.2E-04, and 1.89E-04, while on the B side are 4570.5 kN/m2, 7176.2 kN/m2, 1.51E-04 and 2.37E-04. The maximum deflection occurs at step 11 and 12 is in the amount of 16.7 mm, these results indicate that the structure of bridges / fly-over is stiff and safe.Obtained maximum deflection is 16.7 mm, the results show that the structure of the bridge/ fly-over is safe.