Ganzheitliche Analyse von Stahl- und Verbundeisenbahnbrücken.

Holistic analysis on steel- and composite railway bridges - Innovative solutions for strengthening durability and reducing construction times (Part 1). Investigations on sustainability on infrastructure projects differ from comparable investigations on building constructions through their longer life-cycle of the objects. Questions regarding sustainability are thus accompanied by questions of durability and simple, mostly undisturbed maintenance through the whole life-cycle. By the application of innovative railway bridges with steel and composite constructions blocking times induced by the construction time and maintenance actions within the usage phase, can be effectively reduced. Additionally the optimization of restrictive fatigue-details can affect the whole life-cycle of a bridge-construction. In the frame of the FOSTA-AiF-research project 'Holistic Assessment of steel- and composite railway bridges according to criteria of sustainability' different innovative railway bridge types have been compared to their corresponding conventional bridge types and evaluated over their whole life-cycle to quantify their advantageousness. While this article shows the investigated innovative bridge-variants in constructive regards and optimization proposals and design approaches are explained, the second article is about the holistic approach and the results of the sustainability assessment of the investigated steel-and composite railway bridge. [ABSTRACT FROM AUTHOR]