Influence of Vehicle Load as Point Load on Geogrid Deformation as Embankment Reinforcement on Soft Soil

Public contructions built on soft soil such as clay would face some problems such as long period consolidation time, unstability embankment slope, not easily compacted and high level settlement. Some solution that could be suggested were the usage of vertical drain, or the usage of geosynthetics material such as geogrid combined with floating piles. Analysis was carried out by using plaxis version 7.2. soil for embankment and embankment foundation was modelled in plane strain. Also geogrid and floating piles were modelled in plane strain too. Point load on top of embanknet were variated, they were 20, 40 and 60 kN/m. The simulation was carried out in staged contruction mode. The implementation of vehicle load increased geogrid deformation. It appeared as geogrid vertical displacement when the biggest vehicle load ( 60 kn/m) applied. In long term loading condition where excess pore water pressure was very small, vertical displacement of geogrid was – 0,5062 m for rigid embankment and – 0,6568 m for interface embankment. The difference occured due to slip at the interface of geogrid and soil. It leaded to adding soil mass supported by geogrid, furthermore the deflection of geogrid became bigger

Studi Pengaruh Stabilisasi Tanah Lempung Lunak Menggunakan Kolom Kapur Terhadap Parameter Kecepatan Penurunan Tanah

Soft clay is kind of problem in building and highway foundation design. This type of soils, have low coefficient consolidation (Cv) parameter. This condition will cause that soils have very long duration in consolidation process. Limes column stabilization method can be applicable to solve this problem.This research be conducted to analyzed coefficient consolidation behavior in limes column stabilization method. The change variety of coefficient consolidation w ill be observe due to variation of limes column diameter. The limes column stabilization method be wished to increase the value of coefficient consolidation so settlement process of the soil get more rapidly. This research was conducted through experimentalin laboratory, with box that have 40 cm in diameters and this height is 40 cm. Five various of diameters applied in this research and this affect to value of Cv would be examined. Those are 3 cm, 5 cm, 8 cm, 10 cm and 12 cm diameters The result of this research show that limes column could increasing the value of coefficient consolidation. The average change of Cv is 0,000051 (6,38 %) compare w i th Cv without limes column stabilization. However, increasing of limes column diameters have no significant affects to the value of coefficient consolidation

Studi Pengaruh Stabilisasi Tanah Lempung Lunak Menggunakan Kolom Kapur Terhadap Parameter Kecepatan Penurunan Tanah

Soft clay is kind of problem in building and highway foundation design. This type of soils, have low coefficient consolidation (Cv) parameter. This condition will cause that soils have very long duration in consolidation process. Limes column stabilization method can be applicable to solve this problem.This research be conducted to analyzed coefficient consolidation behavior in limes column stabilization method. The change variety of coefficient consolidation w ill be observe due to variation of limes column diameter. The limes column stabilization method be wished to increase the value of coefficient consolidation so settlement process of the soil get more rapidly. This research was conducted through experimentalin laboratory, with box that have 40 cm in diameters and this height is 40 cm. Five various of diameters applied in this research and this affect to value of Cv would be examined. Those are 3 cm, 5 cm, 8 cm, 10 cm and 12 cm diameters The result of this research show that limes column could increasing the value of coefficient consolidation. The average change of Cv is 0,000051 (6,38 %) compare w i th Cv without limes column stabilization. However, increasing of limes column diameters have no significant affects to the value of coefficient consolidation