Design, fabrication and operation proposals for glued-laminated timber, based on measuring and modelling results, Chapter 2: The calculation modell and its results used for determination the reasons of damaging of glued -laminated timbers

Abstract

Kulcsszavak: rétegelt-ragasztott faszerkezet, delamináció, felmérés Design, fabrication and operation proposals for gluedlaminated timber, based on measuring and modelling resultsChapter 2: The calculation modell and its results used for determination the reasons of damaging of glued -laminated timbers Abstract Glue-laminated timber beams have been used in an increasing number of cases in the past 50 years. Glue-laminated beams are durable constructs if they are manufactured from adequate quality materials and if their installation and operation are performed to a high quality standard. There are however an increasing number of cases of glue-laminated beams suffering damage, and, as a result, entire roof structures becoming unsafe. Because of the arising problems the most important building complexes in Hungary, -in which glue-laminated beams are used as bearing structures,-have been examined. The assessment included both the damage problems of the existing structures and the operating features of the buildings. Later, the reasons for the damages were determined with measurements and caculations. From all of these observations, conclusions and suggestions were outlined for the design, construction and operation of the structures.