Untersuchungen zur Prävention von progressivem Kollaps von Holzhochhäusern.

Recent research on the disproportionate collapse prevention of CLT platform‐type buildings Without additional design considerations, such as structural robustness, the failure of a building's structural element can develop into a progressive and/or disproportionate collapse. The existing requirements in the international guidelines for preventing disproportionate are generally unpractical and uneconomic when applied to multi‐storey cross‐laminated timber (CLT) buildings in platform‐type construction. This paper summarises recent research and improved approaches developed to meet structural robustness for such buildings. To ensure alternative load‐paths using simplified linear‐elastic analytical procedures, an improved method using engineering mechanics was derived for CLT buildings in platform type construction to aids in quantifying the minimum tie‐force requirements. Using advanced nonlinear dynamic analyses, the behaviour of two buildings under element removal scenarios are studied: i) 12‐storey with CLT floor and wall system; and ii) 9‐storey flat‐plate CLT floor system and glulam columns. Finally, in a nonlinear pushdown analysis of a platform CLT bay to characterise the mechanical resistance mechanism of the floor and wall panels, four different alternative load paths are elicited. The presented research findings can support the design of multi‐storey CLT buildings in platform type construction to ensure structural robustness. [ABSTRACT FROM AUTHOR]