Analysis of average wind pressure and responses under static wind for a cylinder-conic section steel cooling tower

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (7) : 149-155.

KE Shitang1,DU Lingyun1,LIU Donghua2,MA Zhaorong2

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Abstract

As a kind of new typical wind-sensitive structure,dynamic characteristics and wind-induced mechanical performance of a cylinder-conic section steel cooling tower are urgent to be studied.With a proposed super large steel cooling tower (189m) in our country as an example,firstly,four steel cooling tower models induding a main cylinder,a main cylinder+ stiffening truss,a main cylinder+ stiffening truss+ accessory truss(hinged),and a main cylinder+ stiffening truss+ accessory truss(fixed) were established based on the finite element method.Their dynamic characteristics and force transmission paths were comparatively analyzed.Secondly,the numerical simulation of wind load on the surface of the cylinder-conic section steel cooling tower was conducted by using the computational fluid dynamics (CFD) method.Finally,with the specified and simulated wind pressure loads,respectively,wind-induced responses of four models were analyzed.The influences of adding stiffening truss and accessory truss and different ways of connection among accessory truss,the main cylinder and ground on dynamic characteristics and responses under static wind of the tower were comparatively studied.The studying conclusions provided a scientific basis for the structure form selection and wind-resistance design of this kind of super large steel cooling towers in our country.

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cylinder-conic section steel cooling tower / CFD numerical simulation / dynamic characteristics / responses under static wind / parametric analysis

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KE Shitang1,DU Lingyun1,LIU Donghua2,MA Zhaorong2. Analysis of average wind pressure and responses under static wind for a cylinder-conic section steel cooling tower[J]. Journal of Vibration and Shock, 2017, 36(7): 149-155

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