Derivation of wind loads for shell structures using CFD analyses Artikel uri icon

Open Access

  • false

Peer Reviewed

  • false

Abstract

  • The construction and operation of buildings consumes a large proportion of the energy and raw materials available worldwide. In order to increase sustainability in construction, high-performance structural systems are required. Especially load-flow-adapted and form-optimized shell structures can bridge large spans with low material consumption. The asymmetric snow and wind loads are to be regarded as relevant for the design. Based on a comparison of international standards, it is shown that the lateral wind flow on shell structures is represented very differently or not at all. This leads to uncertainties among planners with regard to the loads to be applied. On the safe side, values are then set too high and the structure is overdimensioned. However, an individual and specific handling of the wind loads is essential against the background of ensuring structural safety, serviceability and sustainability. In this study, an approach to determine the wind load pressure coefficients for a timber shell support structure using computational fluid dynamics (CFD) is presented. Using a parametrically generated structure, different geometries can be generated and analyzed for wind load coefficients. Depending on the characteristic values, an algorithm is developed to derive a zoning coefficient according to wind load standards. In this way, an application without further CFD analysis is possible. Due to the variable approach, the developed algorithm can also be applied to free-form shell structures.

Veröffentlichungszeitpunkt

  • Januar 10, 2023