Study on wind load analysis of super high-rise tower in Shenyang Henglong City Square
In order to determine the wind load of the tower structure design of Shenyang Henglong City Square with a height of 350.6 m,the wind load of the tower was analyzed by the combination of rigid wind tunnel test and wind tunnel numerical simulation.The wind tunnel test gives the floor shear force and torque and wind-induced acceleration.Four turbulence models were used to simulate the wind tunnel.The average wind pressure coefficient,shape coefficient,base shear force and overturning moment of the building were analyzed and compared with the wind tunnel test.The turbulence analysis model suitable for the wind tunnel simulation of super high-rise buildings was obtained.The numerical wind tunnel simulation technology of the analysis model was used to analyze the wind pressure coefficient,shape coefficient and base shear force of the 13 wind direction angles of the tower,which provides a basis for the value of structural wind load.The results show that compared with the provisions of the Load code for the design of building structures(GB 50009-2012)on the shape coefficient of approximate rectangular plane buildings,the RSM model has a windward surface of 0.83 and a leeward surface of-0.56,which is closest to the windward surface of 0.8 and the leeward surface of-0.6 of the rectangular section in the code.RSM model is the most consistent with the experiment.RSM model is selected to analyze the wind load of super high-rise buildings and other large complex structures,and more accurate results can be obtained.
super high-rise towerrigid wind tunnel testnumerical simulationwind pressure coefficientshape coefficientturbulence model