PERENCANAAN PENINGKATAN JALAN TEMBUS JL. AMBARAWA- JL. SOEKARNO HATTA, BAWEN, SEMARANG
ABSTRACT: Highway with it’s
accessories are a mode of land transport infrastructure wich are essential to
the flow of services and commodity that pass through the land. With the flow of
commodity and services, it will affect the economic and social development
around the existing road infrastructure. Semarang has a strategic location in
the development of the Province of Central Java, because Semarang crossed by
important lines that connect to the regional growth centers such as Semarang,
Surakarta, and Yogyakarta and it’s location close to the capital city of
Central Java Province, wich is the center of economic activity, governance,
social and cultural areas in Central Java. However, various problems of traffic
jam occurs in the area of Semarang, this requiring an improvement road planning
that will be an alternative way into the city of Semarang. Passageway of Jl.
Ambarawa- Jl. Soekarno Hatta located between Ambarawa and Bawen with land use
as residential areas, schools, fields, and forests. The main problem that
occurred in this passageway are a pretty damage road caused by overload traffic
flow and also because of pavement over time factor and because of the road
capacity doesn’t required yet to accommodate the current traffic load. The
purpose and goal of this evaluation and improvement are to maximize road
function as an alternative way, in the end it’ll support a movement that can
achieve economic growth of the area as well as reduce the problem, with a
longer design time. The results of evaluation for the existing roads are gives
several factors to improvement road. Due to the improvement and widening of
road, it is automaticaly should redesign the geometry. The entire analysis and
engineering calculations are based on the Highways Regulations and Indonesian
National Standard. The results of improvement design it is carried one step of
planning to widen this road in 2016, for a Rengas-Bawen segment, Gembol-Doplang
segment and Harjosari-Doplang segment now widened into 7 m, for Rengas – Bawen
segment before was 5 m of lane, and was 3 m for Gembol-Doplang and Doplang-Harjosari,
three of them are design with 2/2 undevided lane, with new shoulder width 1 m.
Design pavement used flexible ones and for the existing pavement need overlay
with thick layer of 7 cm using Laston MS 454. For widening used surface course
with thick layer of 10 cm using Laston MS 454, for base course using a class A
crushed stone with a thickness of 20 cm CBR 100% and the subbase course using
class B gravel CBR 50% with thick layer of 12 cm and lied on subgrade form
browny red silty clay with sand in CBR 6%. Hope that this evaluation and
improvement design can provide comfort services to road users during the
specified design time of 10 years with a plan of speed 50 km / hour and a
maximum slope of 9%.
Penulis: Aprilia Fitri Nuryati
Ningrum, Karib Wicaksono, Moga Narayudha, Siti Hardiyati
Kode Jurnal: jptsipildd150139
