Typhoon-Induced Failure Process and Collapse Mechanism of Super-Large Cooling Tower Based on WRF-CFD-LS/DYNA Nesting Technology

There have been several cases of large cooling towers being damaged by wind in history. A typhoon has the characteristics a strong field energy and shear speed. This paper simulates entire collapse process hyperbolic action typhoons refines typhoon-induced failure mechanism for towers. Firstly, based on WRF-CFD downscaling technology, fine simulation near-ground multiscale produced China’s strongest “Typhoon Rammasun” is performed to extract effective three-dimensional (3D) load input parameters. Then, loading obtained 3D finite element model, pseudo-dynamic analysis world’s tallest tower “Luan Cooling Tower” LS-DYNA explicit dynamic analysis, simulated. Finally, stress distribution distortions response time history key units are compared analyzed determine mechanism. The begins with deformation windward surface throat, which shows folds range 62° both sides. Eventually, occurs due uncoordinated deformation. can be divided into bending arch suspension wire