Analysis And Research On Wind-induced Interference Effects Of Twin And Sperical-shaped Buildings

The wind load is the control load needing to be considered in the structural design for the statue structures.As for the statue structures.Due to the complex shape,large height,the wind field is generally very complicated.So,the surface wind pressure distribution of the statue can not only be obtained by the relevant codes and standards.Therefore,wind tunnel test and numerical simulation method are adopted as help.As for that the general cycle of wind tunnel test is long,its cost is more expensive,and with the development of computational fluid dynamics,besides,the problem of turbulence flow around a bluff body can be worked out by using numerical simulation methods,so numerical simulation method has been becoming an important means to analyze and research the wind field distribution of the statue structures.In the past period of time,while calculating the wind load of the structures,people only took the structure itself into considered,and didn’t take account of the influence of the adjacent buildings.With the progress and development of structural wind engineering,people gradually find that the surrounding buildings will have interference effect on the main building,and the interference effects can not be ignored sometimes,and even the effective wind-resistant measures should be adopted for interference effect.In this paper,based on the Fluent 15.0 software platform,the influence of wind-induced interference on the building structures is discussed.Based on the references and summaries of previous research,first of all,with reference to Tongji University’s TJ-1 wind tunnel test on interference effect of two regular high-rise buildings,a numerical simulation for two standard rigid square column model is made.By comparing the numerical simulation results with wind tunnel test data,making a study and analysis of the influence of the different computational field wall function,convection discrete format,turbulence model on the results of numerical simulation.And the simulation parameters can provide the basis for subsequent numerical simulation,besides,the correctness and accuracy of the numerical simulation results are verified at the same time.Then,at the B wind field terrain,combined with the participation of practical engineering on statue design,a numerical simulation of wind environment of Huangshi pharmacist statue under the independent state is done.Getting and showing the characteristics of the surface wind pressure distribution.Besides,adopting some simplified method to calculate the static wind load of the statue according to the load code,and making a comparison and analysis between the calculation and numerical simulation.Next,at the same wind field terrain,a numerical simulation of wind environment of the Huangshi pharmacists statue under the interference state is done.Simulating the wind field of the statue under the condition of different wind angle and different distance to analyze the interference effect.Taking the wind pressure coefficient of points measured at representative height,the overall shape coefficient of statue walls and base moments in different wind angles into analysis and comparison,and so the overall shape coefficient of statue walls and base moments under the condition of different distance.A preliminary study of the changes of the wind field of the statue under interference condition and the interference effects coming from adjacent buildings has been done.Finally,making a summary of what have been done in this paper,and drawing some conclusions,which may provide a basis and reference for the wind resistance research of the statue structures.