ESDU 88019

Calculation methods for along-wind loading. Part 3. Response of buildings and plate-like structures to atmospheric turbulence.

Abstract:

ESDU 88019 provides a step-by-step calculation method for the loading, accelerations and deflections of buildings and plate-like structures. The loading is derived as the sum of a mean component together with background and resonant fluctuating components. Precalculated loading factors, based on the wind models in the Series, are included in graphical and equation form for estimation of the fluctuating components. Load/velocity admittance factors, which make allowance for the distortion of turbulence by the presence of the structure, are also included. The input data necessary are discussed and, where appropriate, approximate values are provided. A calculation sheet for the method is included and its use illustrated with a worked example. ESDU 92036 provides computer programs for this method, and for the similar method applied to line-like structures in ESDU 87035.

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Details:

Data Item ESDU 88019
Format:	PDF with interactive graphs
Status:	Amendment (D), 01 Jul 2007 Published in Release 2007-03
Previous Releases:	ESDU 88019 Amendment C
ISBN:	978 0 85679 651 7

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This Data Item contains 28 interactive graph(s) as listed below.

Graph	Title
Figure 1	Mean wind speed factor K²_V for wind speed profiles over uniform terrain
Figure 2a	Normalised background loading factor for β = 1.0 and displacement and accelleration response
Figure 2b	Normalised background loading factor for vertical cantilever influence function components
Figure 2c	Normalised background loading factor for horizontal cantilever influence function components
Figure 2d	Normalised background loading factor for single-span influence function components
Figure 2e	Normalised background loading factor for horizontal, two-span, bridge-type influence function components
Figure 2f	Normalised background loading factor for torsional moment, horizontal influence function components
Figure 2g Part 1	Normalised background loading factor for torsional moment, vertical influence function components
Figure 2g Part 2	Normalised background loading factor for torsional moment, vertical influence function components
Figure 2g Part 3	Normalised background loading factor for torsional moment, vertical influence function components
Figure 2g Part 4	Normalised background loading factor for torsional moment, vertical influence function components
Figure 3a	Normalised resonant loading factor for cantilever, first mode, components
Figure 3b	Normalised resonant loading factor for vertical cantilever, second mode, components
Figure 3c	Normalised resonant loading factor for horizontal cantilever, second mode, components
Figure 3d	Normalised resonant loading factor for single-span, first-mode, components
Figure 3e	Normalised resonant loading factor for single-span, second mode and two-span, bridge-type first mode, components
Figure 3f	Normalised resonant loading factor for horizontal, torsional mode, components
Figure 3g Part 1	Normalised resonant loading factor for vertical, torsional mode, components
Figure 3g Part 2	Normalised resonant loading factor for vertical, torsional mode, components
Figure 3h	Normalised resonant loading factor for uniform displacement component, μ_j = 1.0
Figure 4	Normalised spectral function for along-wind component of turbulence
Figure 5	Load/velocity admittance factor for background component of response
Figure 6a	B²_R1 component of load/velocity admittance factor for resonant components of response
Figure 6b Part 1	B²_R2 component of load/velocity admittance factor for resonant components of response
Figure 6b Part 2	B²_R2 component of load/velocity admittance factor for resonant components of response
Figure 7b	Aerodynamic damping factor components - cantilever, first mode, components
Figure 7c	Aerodynamic damping factor components - cantilever, second mode, components
Figure 7g	Aerodynamic damping factor components - torsional mode components