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Author(s):	Hartig, Jens; Heiduschke, Andreas; Haller, Peer
Title:	Holzfachwerke mit Verbindungsknoten aus Beton - Rechnerische Untersuchungen und Bemessungskonzept
Abstract:	Dieser Beitrag behandelt rechnerische Untersuchungen zu einem neuartigen Verbindungskonzept für Fachwerkträger im Ingenieurholzbau. Das Konzept sieht vor, die Stabkräfte mithilfe von passgenauen Knoten aus Vergussbeton zu übertragen. Die Untersuchungen umfassen dreidimensionale Finite-Elemente-Modelle, die zur Bestimmung der Spannungsverteilungen am Fachwerkknoten verwendet werden. Die daraus gewonnenen Erkenntnisse werden in ein einfaches Stabwerkmodell überführt, das in der Lage ist, die Schnittkräfte und das Verformungsverhalten der Träger zutreffend zu bestimmen. Damit verfügt der Ingenieur über ein einfaches Werkzeug zur Bemessung derartiger Konstruktionen. Die erforderlichen Nachweise werden in einem Bemessungskonzept zusammengefasst. Timber trussed girder with concrete joints - Calculative investigations and design concept This article deals with calculative investigations on a novel connection concept for trussed girders in engineered timber structures. The forces between struts and ties are transferred by casted concrete blocks. The presented investigations include three-dimensional finite element models for determining stress distributions at the joints. Based on the results of the numerical model a simple strut-and-tie-model is developed for determining the internal forces and the deformation behavior of respective trussed girders. This provides a simple tool for the engineer to design such structures. The necessary static verifications are summarized in a design concept.
Source:	Bautechnik 90 (2013), No. 7
Page/s:	433-440
Language of Publication:	German

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