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Author(s):	Lindorf, Alexander
Title:
Abstract:	Die Einführung des EC2 im Stahlbetonhochbau führte zu einer umfangreichen Umstellung der bisherigen Regeln zur Bemessung gegen Durchstanzen. Betroffen sind davon vor allem auch die Bewehrungsformen mit Doppelkopfankern. Die Verwendung dieser speziellen Durchstanzbewehrungen wurde in Deutschland bislang über allgemeine bauaufsichtliche Zulassungen geregelt. Die Nachweisführung erfolgte in Anlehnung an DIN 1045-1. Um nunmehr dem Bemessungskonzept des EC2 gerecht zu werden, waren neue Zulassungsdokumente erforderlich, welche mittlerweile in Form von Europäischen Technischen Zulassungen erteilt wurden. Allerdings weicht die darin festgeschriebene Bemessung von Doppelkopfankern in einigen wichtigen Punkten vom EC2 ab. In diesem Beitrag wird ein Überblick über die einzelnen Regelungen und deren Hintergründe gegeben. Ein Bemessungsbeispiel demonstriert den allgemeinen Bemessungsablauf. Punching shear design of double-headed anchors according to European Technical Approvals The introduction of EC2 in structural engineering led to an extensive transformation of the existing guidelines for the design against punching shear failure. Especially reinforcement types consisting of double-headed anchors are affected. In Germany, the use of these special punching shear reinforcements was previously regulated by national approvals. The verification procedure was carried out according to DIN 1045-1. In order to satisfy the design concept according to EC2, new approval documents were required. Meanwhile European Technical Approvals were issued. However, in some important aspects the specified design method of double-headed anchors differs from EC2. The paper gives an overview of the various rules and their backgrounds. A design example demonstrates the general design process.
Source:	Beton- und Stahlbetonbau 108 (2013), No. 10
Page/s:	691-700
Language of Publication:	German

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