Simplex piles

We supply driven piles as displacement piles in a range of designs:

In-situ concrete driven piles

• Frankipfahl NG® piles
• Simplex piles

The piles are driven dynamically, either by internal pipe driving or by head driving, depending on the type of pile. 

We use Cast-in-place concrete driven piles as deep foundation elements for all types of structures. These include:

• Industrial buildings
• Bridges
• Wind turbines
• Logistics warehouses
• Residential and commercial buildings
• Offices and hotels

With their short set-up times, rapid pile production and high load-bearing capacity, driven piles are more cost-efficient and result in shorter construction times. The soil is fully displaced, yielding optimised subsoil conditions and zero drilling waste. This saves on additional costs for transport and landfill disposal.

The installation procedure and the control of the required resistances allow the pile lengths to be readily adapted to changing soil strata.

The advantages of driven piles:

• Very high pile loads possible
• Optimum adaptation to subsoil conditions
• Narrow piles with less concrete consumption and lower carbon footprint than alternative pile systems
• Full soil displacement, thus no transport or disposal costs for the drilling waste
• Complication-free use in contaminated soils
• Economical pile system due to high pile production output
• Very good resistance-settlement properties
• Plumb and raking piles can be installed at an inclination of up to 4:1
• Can be designed as an energy pile, so that the driven piles can also be used for geothermal purposes.
   

Our displacement piles in accordance with DIN EN 12 699 include the following driven piles:

In-situ concrete driven piles

• Frankipfahl NG^® piles
• Simplex piles
   

Standards and regulations

Our driven piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12 699 and the recommendations of the “Piles” working group (EA-Pfähle). Diameters range from 420 mm to 710mm. Pile lengths of up to 40m are possible. 

Production

The following types of foundations are possible:

• Single pile foundations with one-dimensional load transfer
• Group pile foundations with two-dimensional load transfer
• Special case: combined pile raft foundations
   

The wide variety of available variants allows us to adapt to the most diverse subsoil conditions and construction site scenarios in order to achieve high load-bearing capacities.

Quality assurance in construction work requires compliance with European and national standards and the recommendations of the "Piles" working group (EA-Pfähle). The self-monitoring and documentation of construction execution are also regulated in manufacturing standards.

A procedure instruction that is individually adapted to the requirements of the relevant project is required to install driven piles. The machine operator’s instincts are just as important as their technical knowledge or experience. Operating the large special equipment is a delicate process that requires optimal tuning of the manufacturing parameters to achieve the desired pile resistance.

We ensure high execution quality with:

• Individually coordinated instructions
• Compliance with the requirements of DIN EN 12 699, Eurocode 7 and EA-Pfähle
• Clear processes governed by our quality management system in accordance with DIN EN 9001:2015
• Static or dynamic pile load testing
• Pile integrity tests
   

We always work with our own special equipment and appropriately qualified professionals. Our greatest strength is our ability to adapt to the individual conditions on the construction sites at any time during the project. Our long-standing experience and a wide range of technical possibilities ensure that implementation is always safe and successful.

• Frankipile NG®
• Simplex piles

The variety of design variants allows for individual adaptation to a wide variety of subsoil conditions and site scenarios, ensuring high load bearing capacities can be achieved.

The advantages of Frankipfahl NG® piles:

• Very high pile loads can be achieved, with a characteristic pile resistance R_k of up to 12,000kN
• Full soil displacement, eliminating transport costs for excavated soil
• The number and length of the piles used can be individually adapted for ideal results
• Foundation size can be reduced
• A very economical system due to savings in concrete and steel
• Very good resistance and settlement characteristics
• Soil may also be improved by means of gravel pre-compaction 
• Reduced pile casing landing depth
• Low noise emissions in comparison to head-driven systems
• Can be used on contaminated sites
• Can be fabricated in particularly poor, soft soil layers using sleeve pipes
• Can be used as an energy pile

Standards and regulations

The design and manufacture of Frankipfahl NG® piles are governed by Eurocode 7 and DIN EN 12699 and subject to the recommendations of the “Pfähle” working group (EA Piles). Possible diameters range between 51cm and 71cm. Piles usually measure between 10m and 25m in length. 

Pile foot dimensions

The expanded pile foot is a crucial feature of the Frankipfahl NG® pile, allowing for superior axial pile resistance. This foot is created by ramming almost-dry concrete through the interior of the pipe. In our evaluation of a large number of static pile tests, the compactness/consistency of the surrounding soil and the works required to ram in casing tubes have been observed to correlate directly with the pile foot volume necessary to ensure appropriate load bearing capacity. This correlation can be used to calculate and adapt the foot volume to the load bearing capacity of the site soil. These calculations have been used to extrapolate foot dimension curves, such as you see in EA Piles documents.

We will be happy to advise you on the initial sizing for your project.

Quality assurance in construction work requires the observation of both European and national standards. The design and manufacture of Frankipfahl NG® piles are governed by Eurocode 7 and DIN EN 699 and subject to the recommendations of the “Pfähle” working group (EA Piles). The self-monitoring and documentation of construction execution are also regulated by manufacturing standards.

Frankipfahl NG® pile fabrication procedures must be individually tailored to the requirements of the specific method used. This requires specialist knowledge and experience in the field, together with sound instincts on the part of the machine operator. Large specialist machinery must be handled with sensitivity and due attention to the optimum adjustment of manufacturing parameters if the desired pile resistance is to be achieved.

We ensure high execution quality with:

• Individually tailored procedures
• Adherence to the requirements of DIN EN 12 699, Eurocode 7 and EA Piles
• Clear processes overseen by our quality management system in accordance with DIN EN 9001:2005
• Static and dynamic pile loading tests
• Pile integrity tests

In particularly poor, soft soil layers, where strong groundwater is present or where the site soil is particularly concrete aggressive, the fresh concrete columns of the pile require additional support and/or protection. Sleeve pipes attached to the reinforcement cage can be successfully used to address this issue.

This pile system is particularly suitable for projects with a large quantity of piles and long pile lengths. Simplex piles are used where the noise emissions caused by head driving are not a critical factor.

• Very high daily output and thus rapid construction progress
• High pile loads possible: Characteristic pile resistances R_k of up to 6,000kN
• Full soil displacement, thus avoiding the need to transport excavated soil and saving costs
• Very economical system due to savings in concrete and steel
• Good resistance-settlement properties
• Can be used on contaminated sites
• Also available as an energy pile

Standards and regulations

Simplex piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12699 and the recommendations of the “Piles” working group (EA-Pfähle). Diameters range from 42cm to 61cm. Pile lengths of up to 40m are possible. 

Production

Simplex piles are in-situ concrete driven piles with a reclaimed driving tube. This is sealed from below with a watertight base-plate. The pipe is driven into the ground by a hydraulic hammer via the head. The driving work involved, measured in blows per metre, is a measure of the load-bearing capacity of the soil at the pile site in question. Once the desired depth is reached or the driving criteria are met, a reinforcement cage is installed, concrete is poured in and the casing tube is retracted.

The requirements of the relevant European and national standards must be observed to ensure quality assurance during construction. Our Simplex piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12 699 and the recommendations of the “Piles” working group (EA-Pfähle). Self-monitoring and documentation of construction are regulated in the manufacturing standards.

A procedure instruction that is individually adapted to the requirements of the relevant project is required to install Simplex piles. The machine operator’s instincts are just as important as his technical knowledge or experience. Operating the large special equipment is a delicate process that requires optimal tuning of the manufacturing parameters to achieve the desired pile resistance.

We ensure high execution quality with:

• Individually coordinated instructions
• Compliance with the requirements of DIN EN 12 699, Eurocode 7 and EA-Pfähle
• Clear processes via our quality management system in accordance with DIN EN 9001:2015
• Static or dynamic pile load testing
• Pile integrity tests