Messtechnische Begleitung der Einbringung einer Tragbohle mittels Vibration und Schlagrammung

Abstract

Measurement monitoring of the installation of a king pile with vibration and impact ramming. The installation of combined sheet steel pile walls is still a challenge. Distorted king piles can lead to a failure in the connection between the king pile and the sheet pile. There is only little of rules how to choose the driving hammer and guiding which is suitable for the soil and installed pile. Currently the proof for combined walls is only done for the final state. Hence a proof for the combined walls is required which takes the installation process in account and a guideline for choosing the correct guiding for the installation of king piles is required. Unfortunately, the dynamics of the installation process of king piles is not well known. That's why the installation of a big king pile is investigated on a construction site at the harbor of Rostock. It's possible to measure the acceleration, change in length and inclination at the king pile. Further the dynamics and movements of the installation devices, which are influenced by the ram guide, can be investigated. The following change in the position of the foot of the king pile can be derived.