PERENCANAAN JEMBATAN PELENGKUNG TIPE TROUGH ARCH BRIDGE (Studi Kasus: Jembatan Enggang Gading - KJI VXI Tahun 2021)

Bridges are a means of land transportation that play a very important role in facilitating traffic and economic activities. There are various types of bridges, one of which is the arch type bridge. The Enggang Gading Bridge is an arch type bridge with a deck at the bottom of the bridge arch that uses steel material. From the 2021 XVI Indonesian Bridge Competition (KJI), the Enggang Gading Bridge succeeded in qualifying for the final. This bridge was then re-planned to become an actual bridge referring to SNI 1729-2020, as well as SNI 1725-2016 which was planned with a span of 60 meters and a width of 8 meters. This planning aims to determine the profile to be used, the shape of the connection, and the value of the deflection that occurs.
In the planning of this steel arch bridge, the profile used in the main structure (primary structure), namely the floor plate is planned to use a thickness of 250 mm and asphalt plate 50 mm, the longitudinal girder uses the IWF profile 350x350x12x19, the transverse girder uses IWF 800x300x14x26, the longitudinal girder uses the edge IWF 400x400x13x21, hanger girder using parallel wire strand D70, main arc girder using IWF 400x400x13x21, transverse upper wind tie girder using IWF 150x150x7x10, diagonal upper wind tie girder using double elbow 120x120x8, and lower wind tie girder using IWF 350x350x12x1 9. In connection, this steel arch bridge uses bolted connections and welded connections. And the deflection produced in this planning is 60.55 mm in the middle of the bridge span.