Proceedings of DFI-India 2018: 8th Conference on Deep Foundation Technologies for Infrastructure Development in India, (DFI)
Micropiles - A Story of Success
Dipl.-Ing Andreas Brandner
Micropiles are not new, but they are not well known. They have been used already for a very long period as foundation elements - driven piles more than a thousand years - and several European cities are built on thousands of piles. Micropiles in the present meaning are defined in the European Standard EN 14199 as either bored piles with a diameter not exceeding 300 mm or displacement piles with a diameter not exceeding 150 mm. Bored piles can be done with or without casing depending on soil conditions. Micropiles as mentioned above were used in the middle of the past century as so called "pali radici" in Italy, and then later in Germany and the whole of Europe. In the paper the exact definition, and differences in design principles between Europe and other parts of the world will be covered as well as design and execution rules. Examples of the design and erection process show how micropiles can be used not only as foundation elements, but also for slope stabilization projects, soil reinforcement, or solving anchoring problems.
|article #3149; publication #1050 (India2018)|