In order to understand the overall picture, the different technologies for the use of thin-walled prefabricated elements in bridge construction as well as the first-time application of them in a bridge project in Austria are described in this paper. Thereafter a newly developed construction method for the on-site fabrication of lightweight box-shaped segments from thin-walled concrete elements, strengthened with steel girders, is explained with the focus lying on the construction of a prototype in a 1:1 scaling. The conceptional design, the manufacturing in a prefabrication plant in Austria and the transport to a construction site are illustrated. Finally, an application example of the new technology is shown based on a design using the incremental launching method. The research confirms the feasibility of the on-site assembly of segments from thin-walled prefabricated elements and that this construction method, once minor constructive details will be solved in the ongoing research project, has great potential for a broad application in bridge construction.

中文翻译：

---

半预制节段桥：开发一种使用薄壁预制混凝土构件的新施工方法

为了了解整体情况，本文介绍了薄壁预制构件在桥梁建设中的不同使用技术以及它们在奥地利桥梁项目中的首次应用。此后，解释了一种新开发的施工方法，用于现场制造由薄壁混凝土构件制成的轻质箱形管段，并用钢梁加固，重点在于以 1:1 的比例构建原型。展示了概念设计、奥地利预制工厂的制造以及运输到施工现场的过程。最后，基于使用增量发射方法的设计展示了新技术的应用示例。