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Effects of side ratio for ‘Y’ plan shaped tall building under wind load

Building Simulation 2021年第4期14卷 1221-1236页

作者： Prasenjit Sanyal Sujit Kumar Dalui Department of Civil Engineering Meghnad Saha Institute of TechnologyKolkataIndia Department of Civil Engineering IIESTShibpurHowrahIndia

Wind load and response are the major factors that govern the most critical condition for designing tall buildings. This study discusses the variability of wind load and pressure on a Y plan shaped tall building due to the change in the building side ratio. The length to width ratio is changed keeping the total plan area same. The numerical study is done by ANSYS CFX. Two turbulence models, k-epsilon and shear stress transport (SST), are used for doing the numerical simulation and the results are compared with the previous wind tunnel results in a similar flow condition. Sample points were selected based on Audze–Eglais Uniform Latin Hypercube (AELH) method and the analytical expressions of force, moment and torsional coefficients of Y plan shaped tall building are proposed. These expressions are fitted very well and the AELH method has given a great set of sample points that have significantly decreased the total computational time. The graphical representations of these expressions for various coefficients are presented and discussed. Then pressure distributions on three different models are compared and the pros and cons of higher and lower values of side ratios are discussed.

关键词： computational fluid dynamics AELH sampling method least square polynomial side ratio force coefficient moment coefficient

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Wind tunnel test study on the wind pressure coefficient of claddings of high-rise buildings

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Frontiers of Structural and Civil Engineering 2011年第4期5卷 518-524页

作者： Yong QUAN Yi LIANG Fei WANG Ming GU State Key Laboratory for Disaster Deduction in Civil Engineering Tongji UniversityShanghai 200092China Shanghai Nuclear Engineering Research and Design Institute Shanghai 200233China

The area-averaged most unfavorable wind pressure coefficients(MUWPCs)on various regions of building surfaces and the influence of the side ratio and the terrain category were studied based on wind tunnel test data of scale models of typical high-rise buildings with rectangular *** negative area-averaged MUWPCs in the middle-height edge areas generally increased with an increasing D/B side *** areaaveraged MUWPCs can be well fitted with a function of the average area reduced by the square of the building depth,D^(2).In addition,no unique pattern was found for the effect of the terrain category on the MUWPCs.

关键词： side ratio area-averaged pressure coefficients cladding terrain category

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