Preview

Author(s):	Thieken, Klaus; Achmus, Martin
Title:
Abstract:	Gründungspfähle können nicht nur zur Abtragung von vertikalen, sondern gleichzeitig auch von horizontalen Lasten in den Baugrund herangezogen werden. Eine derartige kombinierte Belastung führt allerdings zu Beeinflussungen im vertikalen und horizontalen Tragverhalten, welche in der derzeitigen Bemessungspraxis keine Berücksichtigung finden. Zur Identifikation und Quantifizierung dieser Interaktionseffekte wurden umfangreiche Untersuchungen mit der Finite-Elemente-Methode durchgeführt. Im vorliegenden Beitrag werden Ergebnisse dieser Untersuchungen für Pfähle in nichtbindigen Böden unter dränierten und in bindigen Böden unter undränierten Belastungsbedingungen dargestellt. Dabei wird auch der Einfluss eines Biegemoments am Pfahlkopf oder einer Pfahlkopfeinspannung behandelt. Es ergeben sich komplexe Interaktionseffekte, welche mittels Interaktionsdiagrammen dargestellt werden können. Schwerpunktmäßig werden Interaktionseffekte hinsichtlich Pfahlkopfverformungen und Pfahlgrenzlasten betrachtet. Abschließend wird aber auch die Veränderung der Biegebeanspruchung des Pfahls durch Interaktionseffekte untersucht. Investigations on the interaction relationships for piles under combined loading in cohesive and non-cohesive soils: Foundation piles are normally and favorably used for the transfer of vertical loads into the subsoil. However, in many fields of application piles are used simultaneously for the transfer of horizontal load. This so-called combined loading affects the vertical and horizontal load bearing behavior. In current engineering practice, these interaction effects are not taken into account. For the identification and quantification of the influences a comprehensive investigation based on the Finite Element Method was carried out. The paper in hand presents results of these investigations considering piles in non-cohesive soils regarding drained loading and piles in cohesive soils regarding undrained loading conditions. Thereby the influence of a moment and a rotational spring at the pile head is taken into account. It can be shown, that the combined loading leads to complex interaction effects which can be presented in terms of interaction diagrams. The main focus of the investigation is set on the interaction effects on ultimate loads and pile head displacements. Additionally the influence of combined loading on the pile bending moments is investigated.
Source:	geotechnik 35 (2012), No. 4
Page/s:	217-228
Language of Publication:	German

I would like to buy the article

You can download this article for 25 € as a PDF file (1.35 MB).
The PDF file can be read, printed and saved.
Duplication and forwarding to third parties is not allowed.

Please enter your email address now to start the order process.
The link for the download will be sent to the email address stated after the
order process has been completed.

Your email address

I am an online subscriber

As an online subscriber of the journal "geotechnik" you can access this article via Wiley Online Library.

I would like to order "geotechnik"

This article has been published in the journal "geotechnik". If you would like to learn more about the journal, you can order a free sample copy or find out more information on our website.

Prices include VAT and postage. Prices for 2017/2018.
€ Prices apply to Germany only. Subject to alterations, errors excepted.