Abstract
The calculation process of time history analysis method is complicated and time-consuming which is not convenient for wide application and promotion in engineering design. Based on the idea of mode decomposition in structural seismic response analysis, the fluctuating wind response spectrum and the mode decomposition response spectrum method for wind-induced vibration analysis are derived in this paper. Taking a high-rise building structure as an example, this paper uses the method proposed in this paper, the time history analysis method and the method of my country's load code to compare the wind-induced vibration response analysis. The results show that the method proposed in this paper is simple, effective and convenient for engineering application.
Highlights
The time history analysis method to determine the wind vibration response of the structure requires multiple input wind load time history at the same time, and in order to ensure that the analysis result has a certain guarantee rate, a sufficient number of wind load input samples are required .the calculation process of this method is complicated, the calculation amount is large, and it is not convenient for application and promotion in engineering design
For this reason, based on the idea of modal decomposition in structural seismic response analysis [1], this paper proposes and derives the modal decomposition response spectrum method for structural wind-induced response analysis, and uses a calculation example to verify the effectiveness of the method
The response spectrum here is a standardized value assuming that the ratio of the load generated by the average wind to the mass of the single-degree-of-freedom system is 1, which must be multiplied by the value P /m in practical applications
Summary
The time history analysis method to determine the wind vibration response of the structure requires multiple input wind load time history at the same time, and in order to ensure that the analysis result has a certain guarantee rate, a sufficient number of wind load input samples are required .the calculation process of this method is complicated, the calculation amount is large, and it is not convenient for application and promotion in engineering design For this reason, based on the idea of modal decomposition in structural seismic response analysis [1], this paper proposes and derives the modal decomposition response spectrum method for structural wind-induced response analysis, and uses a calculation example to verify the effectiveness of the method.
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