Research on Wind Pressure Distribution of a Large-Span Double Layer Grid Structure with Skylight
Due to the numerous members and complex shapes of large-span structures,which are not covered by all the relevant parameters for complex structural design in Chinese regulations,there is often a lack of reference basis in structural design.Therefore,it is necessary to study the wind resistance design of large-span spatial structures.Based on the practicle engineering,the numerical simulation(CFD)method with lower cost and higher efficiency is used to study the wind pressure of the large-span grid structure with skylight.Based on the the grid structure aided design software STADS and Fluent interface development program,the partition model of the grid structure with skylight is established,the numerical wind field calculation domain is generated and the calculation results are output,which greatly improves the calculation efficiency.Finally the wind pressure distribution law of the corresponding structure is summarized through comparative analysis.Through the comparative analysis of the wind pressure distribution in the two cases of structural skylight opening and closing,it is found that the overall wind pressure distribution law of the two structural forms is consistent,but there are local differences,and the structural fenestration can effectively reduce the overall wind pressure value and reduce the wind suction force of the structure,but it will increase the pressure at the bottom of the structure and increase the reaction force of the structural support.It provides a favorable reference for the design and construction of large-span skylight grid structure.
tubular shell grid structurewind pressure distributionmultiple wind angleswind field simulation
国家科技期刊平台
NSTL
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