Research On Wind Pressure Characteristics Of Large-span Retractable Roof Structures

With the development of construction industry in recent years,and people pursuit of the material culture and spiritual civilization,make big span structure in recent years obtained the rapid development and application of large span structure both in ornamental and practical has its unique characteristics and advantages.Widely used in the large sports venues and other facilities.But it followed the large-span roof of the study of the experiences of wind resistance,because this kind of building is sensitive to wind load more,so the wind resistance of long-span roof ways has important significance.Retractable roof structures is just emerging in recent years a large-span form,its on the basis of the original large span structure increases the roof can be opened,the top facilities,more and more get the favour of people,but its research in the wind while long span structure is more complex and contrast research of the experiences of wind resistance or rarely at home and abroad,the main research methods are directly on wind tunnel experiment,this paper is related to the wind tunnel experiment based on the corresponding numerical simulation of exploratory research.Retractable roof structures of large-span roof structure are introduced in this model,the numerical simulation of related theory,and open to the roof of the model of four different open numerical simulation test,studies the movable roof respectively under several different open and the structure of the different wind speed and wind direction Angle of the surface wind pressure distribution characteristics,and the relevant comparison analysis.At the same time for different kinds of turbulence model to simulate influence on the structure of the open and close the simple comparison analysis,the accuracy of analysis,and carried out on the roof in the case of a fully open a partition and the size of the partition coefficient was calculated,and gives a reasonable partition value.Through this paper,the relevant conclusions and data for later by means of numerical simulation of wind load of long-span roof opening structure studies provide some valuable reference data.