Analysis of the Barrette Load Investigation of the Tallest Building in European Union

• Main Authors: Kacprzak G., Bodus S.
• Format: Article
• Language: English
• Published: Sciendo 2018-12-01
• Series: Archives of Civil Engineering
• Subjects: Piled-raft foundation; barette; base injection; extensometer
• Online Access: http://www.degruyter.com/view/j/ace.2018.64.issue-4/ace-2018-0057/ace-2018-0057.xml?format=INT

The paper presents a static load test of a pile with the largest vertical load in Poland to-date up to the force of 23000 kN. The test was performed in the centre of Warsaw on the construction site of a future high-rise building to be the tallest building in European Union. The designed building height measured from the ground level is 310 meters including an 80-metre mast. The foundation of the building was designed as a Combined Piled Raft Foundation (CPRF) utilising the barrettes and diaphragm walls technology. The test was carried out on barrettes with lengths of approx. 28 and 34 m and was aimed to estimate the stiffness (load-settlement relation) of the designed 17.5 metre-long barrette situated below the foundation level. In addition to that a series of extensometric sensors was placed inside the barrette to determine the distribution of the axial force.