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Gewählte Master / Diploma Thesis:

Georg Nagl (2015): Dynamische Einwirkung von Einzelkomponenten einer Mure auf Stahlbetonbauwerke.
Master / Diploma Thesis - Institut für Alpine Naturgefahren (IAN), BOKU-Universität für Bodenkultur, pp 91. UB BOKU obvsg

Data Source: ZID Abstracts
Abstract:
The dimensioning of hazard barriers in the alpine region is depending on the impact forces. To evaluate the impact forces on a barrier 58 free-fall studies with differently sized cubes were conducted. The appearing forces on the barrier were measured. The experimental barrier block (1,5m*1m*1m) is based on the design and form of a debris flow barrier with steel armored protection. The constructive test rig consists of a fundament (4m*4m*1,5m), a steel armored barrier block which is equipped with 15 load sensors as well as 32 strain gauges and the 11m high steel tower with a chain hoist. The main goal of the experiment is to compare the test results with existing approaches and to build up practicable dimension criteria's for alpine structures. To measure the impact force 15 load cells are fixed on tread bars which are arranged grid wise on the steel plate of the structure. As impactors cubes made of concrete with different sizes and with constant quality were used instead of natural stones. With the help of the chain hoist the cubes which have a weight from 100kg to 300kg were lifted up to the predefined drop height. The fall processes as well as the impact were recorded via a high-speed-camera. A measuring amplifier was used as the steering- and measuring element with a frequency of 2400 Hz. To measure the stress field within the structure with 32 strain gauges fixed on two designs of flat bar steels. The sensors located in 2 layers in the concrete building block focused on a direct impact without a damped layer above.

Beurteilende(r): Hübl Johannes
1.Mitwirkender: Strauss Alfred

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