Across-wind dynamic loads on L-shaped tall buildings

Li, Yang; Li, Qiusheng

doi:10.12989/was.2016.23.5.385

Cited by 23 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cheng et al (2015) studied the characteristics of fluctuating wind pressures on side faces of H-shaped high-rise buildings and the shape effect on the generation of cross-wind forces with the space-time statistical tool of proper orthogonal decomposition. Li and Li (2016a, 2016b, 2017) proposed empirical formulas for estimating the wind induced cross-wind dynamic loads and torques on L-shaped high-rise buildings, and established a mathematical model for the wind-resistant optimal design of high-rise buildings with irregular shapes. Bhattacharyya and Dalui (2018) carried out experimental and numerical research on mean pressure coefficient of ‘E' plan shaped high-rise building.…”

Section: Introductionmentioning

confidence: 99%

Wind loads characteristics of irregular shaped high-rise buildings

Liu

et al. 2022

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

Many irregular shaped high-rise buildings have been built for graceful demand of architecture or better amenity and ventilation in the world. In this study, a benchmark rectangular high-rise building model and six high-rise building models with various irregular shapes, including two T-shaped, two U-shaped, H-shaped and X-shaped, are tested in a boundary wind tunnel to investigate their wind loads characteristics. The coefficients, power spectral density and cross-correlation of base moments as well as local wind forces are analyzed and discussed in details. Based on the wind tunnel test results, it is founded that the effect of U-shape and H-shape on wind loads is negligible. The along-wind mean base moment coefficient of X-shaped model is increased by 10.0% in 90° wind direction. The wind force characteristics of T-shaped models are quite different from the benchmark model in many cases. The mean base moment coefficient of T-shaped 2 model is reduced by 18.6% in 0° wind direction. Larger mean lift forces and torques of T-shaped models are appeared and there is a certain correlation between along-wind and across-wind local wind forces in 90° wind direction.

show abstract

Section: Introductionmentioning

confidence: 99%

Wind loads characteristics of irregular shaped high-rise buildings

Liu

et al. 2022

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…Deng et al, (2015) investigated the effect of global and local strategies such as chamfered modification, opening slots on aerodynamic forces and wind induced responses by a series of wind tunnel tests which were conducted on tapered super tall building with square cross section by applying simultaneous pressure measurement technology. Li and Li (2016) have developed the optimal design model of an L shaped building using Kuhn -tucker conditions and validated the model with wind tunnel test results. Elias, Matsagar and Datta (2017) have studied multi-mode wind response control of chimneys with SSI consideration using distributed multiple tuned mass dampers (d-MTMDs) and compared with single tuned mass damper (STMDs) , arbitrarily installed distributed MTMDs (ad-MTMDs) to find out best effective mass damper and d-MTMDs gives best result among all the dampers.…”

Section: Introductionmentioning

confidence: 99%

Effect of Aerodynamic Modification on ‘V’ plan Shaped Tall Building Under Wind Excitation

Bhattacharya

Dalui

2022

ASPS Conf. Proc.

View full text Add to dashboard Cite

Advanced high-rise buildings with peculiar cross-sectional plan is the major challenging concern to all structural engineers as well as researchers due to variation in dynamic wind response. Irregular shaped tall buildings are vulnerable to wind force due to height and nonuniformity of the structure. In the present study, the principal objective is to investigate the significant role of the aerodynamic modification of the building model to reduce the aerodynamic effect of wind force on ‘V’ plan shaped high-rise building and to modify aerodynamic design criteria accordingly. Various cases have been made by considering different local modification like corner chamfered and corner rounded of ‘V’ plan shaped building model. The angle between the limbs is 90° which remain unchanged. The percentage is gradually increased from 5% to 20% of the total plan area with 5% regular increment for both chamfered and rounded corner. Wind incident angle is increased from 0° to 90° with 30° regular interval for each case. Computational Fluid Dynamics (CFD) is the basis of method to perform the numerical simulation of ‘V’ plan shaped building with local modifications such as corner chamfered, corner rounded which is similar wind environment as in urban terrain. Grid convergence study is performed to improve the accuracy of result by adopting very finer meshing of Computational Domain. Pressure coefficient of each face, force coefficient, velocity variation, pressure variation on each face is obtained by numerical analysis. Further, a comparison has been made with basic ‘V’ plan shaped tall building model without any modification to study the effectiveness of aerodynamic modification on wind-induced response of ‘V’ plan shaped building exposed to different wind incidence angle and observations have been made on the suitability of aerodynamic modification based on the numerical result.

show abstract

“…Chakraborty et al (2014) investigated the wind pressure distribution on a ''+''shaped tall building using wind tunnel testing and numerical simulation. Li and Li (2016) and Li et al (2017) investigated the across-wind loads and windinduced torques on L-shaped tall buildings. Although a number of studies have been conducted for investigation of the wind effects on tall buildings with various shapes, these studies lack systematic and comprehensive investigations of wind pressure distributions on L-shaped tall buildings.…”

Section: Introductionmentioning

confidence: 99%

Research on the characteristics of wind pressures on L-shaped tall buildings

Duan

et al. 2020

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

Eight L-shaped rigid models with different geometric dimensions were tested at four typical terrain categories in a boundary wind tunnel to investigate the characteristics of wind pressures on L-shaped tall buildings. The effects including wind direction, turbulence intensity, and geometric dimension on the characteristics of wind pressures on L-shaped tall buildings were studied. Shape factors of each face under the unfavorable wind direction were summarized. Moreover, the power spectral densities, correlation coefficients, and coherence functions were analyzed in frequency domain. Based on the testing results, it is shown that the proposed exponential functions fit the measurements well. The objective of this study is to provide useful information for the wind-resistant design ofL-shaped tall buildings.

show abstract

Across-wind dynamic loads on L-shaped tall buildings

Cited by 23 publications

References 16 publications

Wind loads characteristics of irregular shaped high-rise buildings

Wind loads characteristics of irregular shaped high-rise buildings

Effect of Aerodynamic Modification on ‘V’ plan Shaped Tall Building Under Wind Excitation

Research on the characteristics of wind pressures on L-shaped tall buildings

Contact Info

Product

Resources

About