Kaalkar-Appeldorn
Pile foundations for sugar silos
Appeldorn, Germany / 03.2017 - 05.2017
Two new sugar silos have been erected at the Pfeifer & Langen GmbH & Co. KG production site in Kalkar-Appeldorn. PORR special civil engineering was commissioned to produce 309 Frankipiles NG® as part of the foundation work. The piles were constructed with a diameter of 71 cm and lengths of up to 14 m.
Facts & Figures
Company
PORR Spezialtiefbau GmbH
Type
Foundations
Runtime
03.2017 - 05.2017
309 Frankipiles NG® for the construction of new sugar silos
Large quantities of sugar beet are processed at the site every day. Deep foundation works were required for the two new silo structures due to the structural loads and the geotechnical constraints. Specific requirements arose from the loads imposed by the silo structures, as well as the varying load conditions during filling and emptying.
Subsoil with limited bearing capacity
The upper layers of the subsoil consisted of fill, sandy loam and silt. These soil layers have limited bearing capacity and were insufficient for the foundations of the silo structures. The loads were therefore transferred via piles driven into the densely packed sands and gravels underlying them.
309 Frankipiles NG®
A total of 309 Frankipiles NG® were manufactured for the foundations of the two silos. The piles have a diameter of 71 cm, reached lengths of up to 14 m and were designed for design loads of up to 6,000 kN. The foundations were tailored to the load requirements of the structures as well as the local ground conditions.
Test loads to verify bearing capacity
Static and dynamic test loads were carried out before and during construction. In total, the test programme comprised two static pile load tests and four dynamic pile load tests. The tests served to verify the bearing capacity and the deformation behaviour of the pile foundation.
Pile foundations during ongoing construction
Once the first silo area had been completed, the subsequent earthworks began immediately. The installation of the remaining piles was therefore co-ordinated with the subsequent construction phases. The foundation works formed the basis for the construction of the two new sugar silos on the factory premises in Kalkar-Appeldorn.
Foundation for the expansion of the production site
The installation of 309 Frankipiles NG® laid the groundwork for the construction of the new silo facilities. The pile foundation transfers the load from the structures into the load-bearing soil layers and forms an integral part of the expansion works at the production site.
