Link Columns Settlement For Free

Stone columns, also known as granular piles, consist of stone aggregates compacted into a vertical hole. Generally, the size of aggregate used is 20mm to 75mm and the depth of hole is about 15m to 20m with the diameter of 0.6m to 1.0m. The compaction is achieved by a vibrating probe or by ramming.

Stone columns are considered one of methods used to reduce the settlement of soft clay soil, and helps to speed up the rate of consolidation by shorting the length of drainage path within the soft clay layers, and then decrease the relative displacement between the pile and the surrounding soft soils.

The main aim of stone column installation is to reduce settlement, shorten consolidation time and increase the bearing capacity of soils. A comprehensive literature search has extracted many studies on finite element models, numerical simulation, and large-scale tests to identify stone columns' performance.

Like most ground improvement techniques, stone columns are used to reduce settlement and increase load-bearing capacity. They also accelerate soil consolidation as a result of the drainage capacity of the granular material within the columns, which act as pore or water pressure evacuation points.

The effectiveness and performance of the stone column technique is influenced by several factors, including the column length to diameter ratio (L/d), the area replacement ratio (As), the column spacing (s), the stiffness of the column (Ec) and of the surrounding soil (Es), the stress ratio of the column and soil (?vc/ ...

Stone columns can be used to accelerate the consolidation of soft clay deposits through two mechanisms. First, the stone columns act as vertical drains that provide additional drainage path for excess pore water pressure to dissipate.