ANALISIS FAKTOR KEAMANAN PADA JEMBATAN KERETA API BH NOMOR 105 KM 49+093 ANTARA STASIUN LUBUKALUNG DAN STASIUN SICINCIN DI DIVRE 2 SUMATERA BARAT

Abstract

One of the structures on various railroads, of
which is a bridge. On the railway bridge, there are
calculated loads. The load is divided into three,
namely the girder self-load, additional dead load, and
live load. Locomotives and wain have different axle
loads and axle distances, so there is a change in the
forces acting on the rail structure. Currently, the
planned train loading is based on the 1921 Load Plan
(RM) scheme. On the bridge BH No. 105 which
connects Lubukalung Station with Sicincin is passed
by BB 303 locomotive and closed wain, loading
analysis is carried out by making axle loads and axle
distances on a span of 50 m. Then we can compare
the calculation of the load with the RM 1921 and RM
Sumbar scheme, it is necessary to check the capacity
of the entire bridge structure against the applicable
loading. Obtained the value of the calculation of the
safety factor of the existing loading with the RM 1921
scheme for a maximum reaction is 2,353 and a
maximum moment is 2,32. With the RM Sumbar
scheme, a maximum reaction is 0.8365 and a
maximum moment is 0.74125. This shows the
achievement of a safety factor of more than 1.5 for the
calculation of the safety factor of the existing loading
with the RM 1921 scheme. While the maximum
displacement safety factor value for the RM 1921
scheme is 0.005, West Sumatra RM 0.005, and the
existing charge is 0.0667. Based on the calculation results, it is smaller than the maximum safety factor
value that meets the requirements.