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Author(s):	della Pietra, Regina; Tue, N. V.
Title:
Abstract:	Bei Integralbrücken ist die realistische Erfassung der Zwangbeanspruchungen und der Boden-Bauwerks-Interaktion von entscheidender Bedeutung für eine gelungene Bauwerksplanung. Im vorliegenden Beitrag werden wesentliche Ergebnisse zum Einfluss des Baugrunds auf die Schnittgrößen infolge von Temperaturänderung und des Erddrucks für Bauwerkslängen bis zu 30 m dargestellt und diskutiert. Damit werden mehr als 80% der Brücken im Straßennetz von Österreich und Deutschland behandelt. Weiterhin wird der Frage nach dem Abbau der Zwangkraft im ULS und SLS nachgegangen. Auf diesen Ergebnissen basierend, werden Empfehlungen für die Planung und Bemessung von Integralbrücken bis zu 30 m Länge vorgeschlagen. Quantification of restraint stresses in integral bridges due to temperature and earth pressure with spans up to 30 m The design of integral bridges requires a realistic quantification of restraint stresses as well as of soil-structure-interaction. This contribution discusses key findings regarding internal forces due to change of temperature and earthpressure while taking the influence of the subsoil into account. The observation is carried out for bridges with spans up to 30 m. This covers more than 80% of the existing road-bridges in Austria and Germany. Additionally the reduction of restraint forces in ultimate limit state and serviceability is investigated. Recommendations for the design of integral brides with spans up to 30 m are given based on the results of this study.
Source:	Beton- und Stahlbetonbau 112 (2017), No. 2
Page/s:	96-105
Language of Publication:	German

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