Analisis Penurunan Dan Waktu Konsolidasi Pada Perbaikan Tanah Lunak Dengan Metode Prefabricated Vertical Drain Dan Preloading

Abstract

Brebes – Tegal North Ring Road located on Jl. Raya Klampok, Wanasari District, Tegal City, Central Java Province is a national scale road that has a length of about 17 kilometers. The northern ring road brebes – Tegal was built to facilitate the flow of special traffic in Brebes which will become an industrial area. The development is divided into four zones, namely the first zone of stressing work and installation of bridge girders, the second zone of clearing preparation, the third zone of land hoarding, and the fourth zone which is the preparation of soil materials for the construction of kemiri and Kaligangsa bridges. Therefore, it is necessary to review the decline of land and the time of consolidation on the road.For road repair analysis using Prefabricated Vertical Drain (PVD) and Preloading methods manually or using Plaxis 8.6 softwere application to find out the comparison of the decrease and time of consolidation of soft soil on the improvement of Prefabricated Vertical Drain (PVD) and Preloading methods with Mohr Coulumb modeling on Plaxis 8.6 and analytics.The results of research on soft soil on the construction of the northern ring road Brebes – TegalTegal City Central Java Province with soil improvement utilizing prefabricated vertical drain and preloading method is able to accelerate the consolidation time and not affect the decline. The factors that influence this are pvd mounting pattern and PVD mounting distance. Triangular pattern is the most effective because the closer the installation, the faster the consolidation process.