Research On Shape Factor Of Wind Load Of Taihe Palace Constructed With Double-hipped Roof In Qing Dynasty

The main characteristic of ancient buildings in the qing dynasty is the light structure, theeaves, whose size is relatively complex.Wind-resistant design of structures is the key todetermine the structure of the wind load shape coefficient, the load code for the existing stateand no rules similar to ancient building shape coefficient.So the determination of wind loadshape coefficient of ancient buildings in the qing dynasty to the qing dynasty provides somereferences for the restoration of ancient buildings, archaize building design.Wind load shapecoefficient can be obtained from wind tunnel test, but the traditional wind tunnel test researchis laborious and time-consuming, costly, wind tunnel is difficult to simulate the actual windprofile, and the scale of the model makes it hard for Reynolds number close toimplementation.Along with the rapid progress of computer software and hardware, rapidlyincrease of computing technology and the continuous development of computational fluiddynamics and perfect, with the increasing maturity of the computer to simulate the windtunnel test, and gradually become the most powerful means structural wind engineeringresearch.In this paper, it is using this numerical wind tunnel simulation study ofdouble-hipped roof ancient buildings around the hall of supreme harmony in the qing dynastywind field, and the structure of the wind load shape coefficient is obtained.Basically has thefollowing theseaspects:（1）Based on CFD numerical simulation software Fluent6.3enclosed with skylight isdouble slope roof factory in numerical simulation of the numerical simulation of the size ofthe computational domain, the mesh division of the size, number and form, the selection ofthree dimensional turbulent flow model, boundary conditions, discrete format andconvergence criterion, and the average wind pressure coefficient distribution on the surface ofthe building, the building shape coefficient and "load code for the design of buildingstructures" demonstrates the feasibility and the accuracy of numerical wind tunnel simulation.（2）Under different wind speed and direction Angle of double-hipped roof ancientbuilding wind environment around the hall of supreme harmony in the qing dynasty to carryon the numerical simulation, and describe the complexity of wind flow around buildings andbuildings on the surface of the average wind pressure coefficient changes with the change ofwind direction Angle of the trend, and in the process of wind flow around buildings and therelationship between air pressure.Pointed out that in different wind direction Angle of theweakest parts of the structural wind resistance design. （3）Get can be directly applied to engineering design wind load shape coefficientdiagram, design to provide the reference for the repair of buildings and the fake.