Simulation of Dynamic Characteristics of Buildings under Wind Loads and Innovative Design Methods for Wind-Resistant Structures

The dynamic characteristics of buildings are the basis for studying the vibration of buildings under wind loads, while the innovative design of wind-resistant structures is an important guarantee for the safety and comfort of buildings under wind loads. In this paper, we calculate the building’s dynamic characteristics by establishing the vibration equations of the structure. We then convert the wind load into an equivalent static load and establish the necessary conditions to construct an optimized wind-resistant structural design model. The finite element modeling method is used to generate the building model of this paper and conduct research on its dynamic characteristics and wind-resistant design. In this paper, the model in the vicinity of 0.6Hz and the wind load along the parallel direction of the building, x direction appears to reach the peak amplitude response of 4.22cm. The pressure coefficients at each measurement point of the building are found to increase gradually with the increase of Re and reach the critical condition at Re = 1.02×10⁶ under 0° wind angle. Through the implementation of simulated wind tunnel tests on the building, this paper provides a preliminary assessment of the existing wind design methods and highlights the problems in these methods. Using the comparative analysis method, it can be obtained that the optimized wind-resistant structure model of the building designed in this paper reduces the base shear force in the crosswind direction by 3.73% and the base shear force in the downwind direction by 5.53%. At the same time, the inter-story displacement angle of the building is significantly reduced after optimizing the wind-resistant design.