Ringtrac® Reliable Ground Improvement for Weak Soils

Reliable Ground Improvement Particularly for Soils with very low Bearing Capacity Challenges and goals Comparison of methods and solutions The design of reliable embankment foundations on weak soils pose a major challenge. In addition to large-scale settlement and lateral deformation, potential risks include bearing and slope failure, or even the squeezing-out of soil from beneath the embankment base. Selection of the most suitable foundation method is dictated by the soil conditions, loads and requirements placed on the structure. Key parameters for describing the soil conditions include the...

• Suitable for soft strata with su < 15 kN/m² • Filtration stability between adjoining ground and column fill • No column failure due to bulging/shear/buckling action • High system redundancy • High ductility • Megadrain • Cost-effective thanks to use of locally sourced fill materials The Geotextile-Encased Column Column Integrity for Load Transmission in Extra-Soft Soils Innovative foundation The Ringtrac foundation system takes the form of a regular arrangement of columns comprising non-cohesive material placed inside a geosynthetic casing. The geotextile-encased column represents an improvement...

The Geotextile-Encased Column System How the system works The columns ensure that the structural loads are transmitted through the weak subsoil to a stratum with adequate bearing capacity. The system's high ductility enables it to accommodate fluctuations in actions and soil properties through load redistribution. Applications • Standard road and rail embankments • Land reclamation • Dams and dikes • Road and rail access for mining • Improvements to liquefaction-prone soils The following design parameters can be used to adapt the system to virtually any construction application • Circumferential...

Displacement method Most common installation method whereby circumferential tensile forces are activated under imposed loads (embankment etc.). • Steel tube with closing base flaps • Tube sunk to bearing stratum • Geosynthetic casing inserted into steel tube • Casing filled with granular and non-cohesive material, e.g. sand, gravel, crushed stone and recycled material • Steel tube withdrawn from ground under vibration • Circumferential tensile forces activated by column expansion under imposed loads Replacement method Low-impact installation method with no dynamic effects on surrounding area....

• Suitable for extremely soft soils • 50-75 % reduction in creep settlement • Dynamic loads (e.g. from passing trains) accommodated without damage • Adjacent buildings unaffected by settlement • Neighbouring structures shielded from horizontal pressure • Full loadability immediately after completion • Adaptability to local conditions and loads • Permeability of weak subsoil maintained • Suitable in conjunction with confined groundwater thanks to base seal HUESKER RingtracS software Reliable design to meet any challenge RingtracS is a design software application purpose-developed by HUESKER's...

Application Examples Mühlenberger Loch Turkey, 2012 – 2014, underwater foundation for 20 m high traffic embankment in earthquake region. Installation at up to 7 m water depths. Brazil, 2004 – 2010, foundation system for thick, soft, waterlogged soil stratum with low bearing capacity by Sepetiba Bay. The approx. 900 ha site was used to build a new steel mill. Germany, 2001 – 2003, extension to DASA Airbus plant at Hamburg-Finkenwerder, made possible by reclamation of 140 ha of land directly by River Elbe. The overall foundation system incorporated 60,000 geotextile-encased columns for a 2.4 km...

On-The-Spot • On-site instruction Where required, our application technicians can offer installation assistance related to the specifics of product installation. • Installation aids We can offer you practical installation aids to facilitate the application of our products. • Training Product and application-specific instruction. HUESKER Services HUESKER services begin with providing the customer with initial advice and end with supporting the realisation of the project on site. What we provide are safe, customised, ecologically sound and economically viable project solutions. Engineering Services...

Ringtrac® and Stabilenka® are registered trademarks of HUESKER Synthetic GmbH. HUESKER Synthetic is certified to ISO 9001, ISO 14001 and ISO 50001. □ HUESKERIdeen. Ingenieure. Innovationen. 09/17 H Copyright by HUESKER Synthetic GmbH, Gescher