STUDI STABILITAS DINDING PENAHAN TANAH BERDASARKAN PENGARUH TINGGI DINDING RENCANA RETAINING WALL DESA MARGOMULYO KECAMATAN LOA JANAN

Abstract

Margomulyo village is one of the villages located in District Loa Janan
Regency, the village is located in the mining area which led to several roads
leading to the village is experiencing landslides due to soil instability. On some
streets Village Margomulyo Loa Janan subdistrict are point landslide which
then inhibits the flow of traffic and transportation.
To overcome this avalanche handling efforts by using retaining wall
construction. The purpose of the handling of avalanche course in order to avoid
the termination of the road so that it can interfere with the performance of the
road at that location. Retaining wall is a construction model of prevention of
landslides that have long been used ever since the ancient Roman era. With the
development of construction technology fairly rapid construction of retaining
wall has evolved into a variety of shapes and materials used, but the
parameters of the construction is the ability to accept vertical and horizontal
loads.
The study on high retaining wall is one way to measure the level of
success in the use of this type of construction for the prevention of avalanches
especially on roads Margomulyo Village, District Loa Janan, Kutai regency.
The limit problem in this study is more focussed includes, calculating the
dimensions of a retaining wall using type counterfort, burdens the work is its
own weight, additional dead load, traffic load, the load pressure of the soil and
earthquake loads, calculations using two alternative high dimensional plan that
is 3 meters and 5 meters with a segment length is 15 meters and the quality of
concrete used is K.275, or 275 kg / cm2. From the calculation results can be the
largest vertical force 1848.8919 KN, and 685,802 KN greatest shear forces. In
the 3 meter high wall construction secured against rolling, but the 5 meter high
wall construction is not safe, especially on the y axis retaining wall. While
under the influence of shear retaining wall construction is quite safe.