Pier Foundations,
Your trusted partner in advanced foundation solutions. Specializing in the expert installation of vibratory stone columns, we combine decades of experience with cutting-edge technology to deliver unmatched stability and durability for your projects.
Ground Improvement - Vibratory Stone Columns
Vibratory Stone Columns (VSCs) are a specialized engineering solution used to strengthen and stabilize weak or soft soils before construction. They are a ground improvement method that involve vertical columns of compacted aggregate installed through soils that need geotechnical properties improved
VSCs consist of stone aggregates compacted into a vertical hole to create a column.
The compaction is achieved by a vibrating probe or by ramming the stone into the vertical hole in lifts.
Video Section
How is the Process Completed?
Activation of Vibroflot
The vibroflot, equipped with a vibrating mechanism at its tip, is slowly inserted into the ground at the predetermined location.
Vibration Initiation
Once positioned correctly, the vibroflot begins to emit high-frequency vibrations. These vibrations serve multiple purposes:
- They liquefy the surrounding soil temporarily, making it easier for the aggregate material to fill voids and densify effectively.
- They help in compacting both the surrounding soil and the aggregate material, increasing the overall density of the ground.
Simultaneous Aggregate Pumping
While the vibroflot vibrates, aggregate material (typically crushed stone or gravel) is continuously fed through the hollow center of the vibroflot.
Compaction Process
As the vibroflot is gradually lifted or lowered at a controlled rate, the aggregate material fills the void created by the vibrating tip.
Column Formation
The combination of vibration and aggregate filling results in the formation of a dense, vertical column of stone. This column extends from the base of the vibroflot to the desired depth as specified by the engineering design.
Lifts
The withdrawal rate of the vibroflot is carefully controlled to ensure uniform compaction and consistent column diameter throughout the installation process, these incremental compaction stages are called lifts.
Repeat Installation
The above steps are repeated at each designated location within the grid or pattern laid out during the site preparation phase.
Quality Checks
Throughout the installation process, quality control checks are performed to verify the integrity and dimensions of each stone column.
Suitable for sites with weak or compressible soils.
Ideal for foundation support in areas prone to settlement.
Used in new construction or to retrofit existing structures.
VSC improves soil conditions which didn’t have the sufficient characteristics to permit construction previously
Advantages of Vibratory Stone Columns
Enhanced Bearing Capacity
VSC improves soil conditions which didn’t have the sufficient characteristics to permit construction previously
Rapid Installation
Efficient and cost-effective compared to traditional methods.
Cost Benefits
Lower overall project costs due to reduced construction time and equipment requirements compared to methods like deep foundations or soil stabilization.
Reduces Settlement
Reduces both differential and overall settlement by lowering the compressibility of the composite soil with the addition of the aggregate material.
Minimal Disturbance
Low vibration and noise during installation.
Versatility
Applicable in various soil conditions and project types.
Long-term Stability
Provides durable support for structures over time, ensuring minimal settlement and maintaining structural integrity.
Vibratory stone columns (aggregate piers) not only enhance immediate bearing capacity and expedite construction but also contribute to long-term stability by mitigating differential and overall settlement through the reduction of soil compressibility with the aggregate material.
Projects That May Benefit
- High-rise buildings and skyscrapers
- Industrial facilities and warehouses
- Residential developments
- Infrastructure projects (roads, bridges)
- Commercial complexes
- Energy facilities (e.g., wind farms)
- Agricultural buildings (elevators, grain bins)
Areas We Serve
Indiana Founded Company serving the Midwest and surrounding regions. See blue Shaded regions in the above map for all working locations.