Wind Loads Simulation of Tall Building Structure Subjected to Wind-Structure Interaction

2010 ◽  
Vol 163-167 ◽  
pp. 4286-4289
Author(s):  
Wen Bo Bao ◽  
Yu Yong Hu ◽  
Yang Cui
Keyword(s):  
Coupling Effect ◽  
Harmonic Wave ◽  
Wind Load ◽  
Tall Building ◽  
Wind Loads ◽  
Superposition Method ◽  
Building Structure ◽  
Complex Load ◽  
Structure Interaction ◽  
Wind Structure

Wind is an important and complex load and an important basis in the structural analysis and the design of high-rise structure. Based on Davenport wind spectrum, multi-dimensional fluctuating wind and random wind load of tall building structure are simulated by using harmonic wave superposition method. To investigate the coupling effect of wind loads, wind-structure system is solved with Wilson-θ step-by-step numerical integration method, and the wind load of Tall building structure subjected to fluid-structure interaction. Turbulence intensity and its variation are presented in this paper.

On Wind-Induced Vibration Respons of Tall Building with Wind-Structure Interaction

2010 ◽  
Vol 163-167 ◽  
pp. 4385-4388
Author(s):  
Wen Bo Bao ◽  
Yang Cui ◽  
Yu Yong Hu
Keyword(s):  
Coupling Effect ◽  
Harmonic Wave ◽  
Tall Building ◽  
Superposition Method ◽  
Dynamical Equations ◽  
Structural Dynamic ◽  
Structure Interaction ◽  
Wind Structure ◽  
Structural Dynamic Characteristics ◽  
Wind Induced Vibration

In order to reveal the structural dynamic characteristics in natural wind, multi-dimensional random wind load of tall building is simulated by using harmonic wave superposition method. Then the coupling dynamical equations of structural system are solved by using Wilson- integration method considering the coupling effect of wind-induced interaction. Based on the analysis, it is clear that the coupling of wind-structure is equivalent to the damping effect and the dynamic response of the structure has decreased, when taking the wind-structure interaction.

Dynamic Behavior of Extra-High Building with Wind Load and Gravity Coupling Effect

2012 ◽  
Vol 594-597 ◽  
pp. 969-972
Author(s):  
Zhen Yu Zhong
Keyword(s):  
Frequency Characteristic ◽  
Coupling Effect ◽  
Order Effect ◽  
Wind Load ◽  
Building Structure ◽  
Amplitude Frequency Characteristic ◽  
Difference Form ◽  
Shear Distortion ◽  
High Building ◽  
Simulated Wind

Wind-gravity coupling effect(WGCE) is an evident phenomenon of extra high buildings. Cantilever model of tall building structure which includes bending and shear distortion is established in the paper. The equations of wind load and gravity coupling have been concluded and are dispersed into difference form. Amplitude frequency characteristic of the structure and vibration acted by simulated wind load are studied though calculation by Wilson-θ method. The result shows that gravity second order effect of extra-high buildings will be enhanced when ratio of gravity rigidity or ratio of bending and shearing rigidity increase.

Wind Induced Vibration of a Super Tall Building Considering the Variations of its Damping

2012 ◽  
Vol 433-440 ◽  
pp. 1470-1473
Author(s):  
An Xu
Keyword(s):  
Great Degree ◽  
Wind Direction ◽  
Structural Response ◽  
Nonlinear Damping ◽  
Wind Load ◽  
Tall Building ◽  
Wind Loads ◽  
Result Show ◽  
Study Case ◽  
Wind Induced Vibration

In this paper, a improved algorithm based on Newmark-βto analyze the structural response under wind loads was presented and enhance the calculation efficiency in a great degree. The GWT was presented as an study case and its response under wind load was calculated by the proposed method. Nonlinear damping was taken into consideration in calculation. The result show that the structural RMS response in cross-wind direction is much larger than that in along-wind direction.

Static Wind Load and Gravity Coupling Effect of Tall Structure

2011 ◽  
Vol 94-96 ◽  
pp. 1556-1559 ◽  
Author(s):  
Zhen Yu Zhong
Keyword(s):  
Finite Difference ◽  
Cantilever Beam ◽  
Coupling Effect ◽  
Tall Buildings ◽  
Order Effect ◽  
Wind Load ◽  
Beam Model ◽  
Building Structure ◽  
Vertical Gravity ◽  
Tall Structure

The cantilever beam model of tall building structure which includes lateral wind load and vertical gravity coupling has been established in the paper. The form of finite difference has been concluded from equations of the model acted on static wind load. Amplified coefficients of bottom moment and top displacement are calculated and analyzed. The result shows that gravity second order effect of tall buildings will be enhanced when ratio of gravity rigidity or ratio of bending and shearing rigidity increase.

Refined Mathematical Models for Across-Wind Loads of Rectangular Tall Buildings with Aerodynamic Modifications

2021 ◽  
pp. 2150131
Author(s):  
Yi Li ◽  
Chao Li ◽  
Qiu-Sheng Li ◽  
Yong-Gui Li ◽  
Fu-Bin Chen
Keyword(s):  
Wind Tunnel ◽  
Correlation Coefficients ◽  
Tall Buildings ◽  
Tall Building ◽  
Experimental Results ◽  
Dynamic Loads ◽  
Wind Loads ◽  
Empirical Formulas ◽  
Benchmark Model ◽  
Power Spectral

This paper aims to systematically study the across-wind loads of rectangular-shaped tall buildings with aerodynamic modifications and propose refined mathematic models accordingly. This study takes the CAARC (Commonwealth Advisory Aeronautical Research Council) standard tall building as a benchmark model and conducts a series of pressure measurements on the benchmark model and four CAARC models with different round corner rates (5%, 10%, 15% and 20%) in a boundary layer wind tunnel to investigate the across-wind dynamic loads of the typical tall building with different corner modifications. Based on the experimental results of the five models, base moment coefficients, power spectral densities and vertical correlation coefficients of the across-wind loads are compared and discussed. The analyzed results shown that the across-wind aerodynamic performance of the tall buildings can be effectively improved as the rounded corner rate increases. Taking the corner round rate and terrain category as two basic variables, empirical formulas for estimating the across-wind dynamic loads of CAARC standard tall buildings with various rounded corners are proposed on the basis of the wind tunnel testing results. The accuracy and applicability of the proposed formulas are verified by comparisons between the empirical formulas and the experimental results.

Spectral Characteristics and Correlation of Dynamic Wind Loads of a Typical Super-Tall Building

2013 ◽  
Vol 351-352 ◽  
pp. 347-350
Author(s):  
Lun Hai Zhi
Keyword(s):  
Wind Tunnel ◽  
Empirical Formula ◽  
Spectral Characteristics ◽  
Tall Buildings ◽  
Tall Building ◽  
Wind Loads ◽  
Wind Loading ◽  
Wind Tunnel Tests ◽  
Cross Correlations ◽  
Overturning Moment

This paper present some selected results of wind tunnel tests carried out on a typical super-tall building The variations of wind loads in the three orthogonal directions with wind attack direction were evaluated. The cross-correlations among various wind loading components were presented and discussed in detail. Furthermore, the across-wind spectral characteristics were studied and an empirical formula for estimation of the across-wind overturning moment spectrum for the super-tall building is presented. The output of this study is expected to be of considerable interest and practical use to professionals and researchers involved in the design of super-tall buildings.

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