Tragsicherheit von Holzkonstruktionen im Wildbachverbau – Ein Fallbeispiel 60-jähriger Wildbachsperren | Bearing resistance of timber structures – a study of 60-year-old log crib dams | Zendy

Konrad Philipp Noetzli | Zendy; Martin Frei-Erb | Zendy; Albert Böll | Zendy

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Tragsicherheit von Holzkonstruktionen im Wildbachverbau – Ein Fallbeispiel 60-jähriger Wildbachsperren | Bearing resistance of timber structures – a study of 60-year-old log crib dams

Author(s) -

Konrad Philipp Noetzli,

Martin Frei-Erb,

Albert Böll

Publication year - 2002

Publication title -

schweizerische zeitschrift fur forstwesen

Language(s) - English

Resource type - Journals

eISSN - 2235-1469

pISSN - 0036-7818

DOI - 10.3188/szf.2002.0377

Subject(s) - bending moment , structural engineering , statics , bending , moment (physics) , bearing capacity , forestry , geotechnical engineering , environmental science , engineering , geography , physics , classical mechanics

Timber is a valuable building material for log crib dams in torrent control. However, due to inherent biological deterioration its stability and strength decreases over time. Round wood beams from three log crib dams, built around 1940, were subjected to bending tests in a case study in situ to determine the bending moment at failure. 60 years after installation, two-thirds of the tested beams still showed a higher bending moment at failure than the original design moment, with an average safety factor of 1.2. The influence of the test conditions and the statics of the systems are discussed here.

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