Versuche und Berechnungen an allseitig gelagerten 3-schichtigen Brettsperrholzplatten

Within the framework of an extensive research project, cross-laminated solid wood panels, which are used in building industry also as static load bearing elements, were investigated. 3-layered cross-laminated square solid wood panels with side length of 2,5 m and thickness of 70 mm from two producers were statically tested to failure. Three different types of loading and two cross-section compositions were investigated. Ultrasonic measurements of the single layers before bonding served to estimate the modulus of elasticity (MOE) of the single layers. The MOE and the strength of the bonded panels parallel and perpendicular to the grain direction of the outer layers were additionally derived from beam tests. Results and conclusions of the ultrasonic measurements, beam and panel tests are presented. Different beam and plate calculation methods for the cross-laminated wood panels are presented. The results of the tests are compared with the calculations. A calculation proposal for the practice is presented.