Uncertainty analysis method for high-rise building wind response analysis models

Abstract

The invention discloses an uncertainty analysis method for high-rise building wind response analysis models. The uncertainty analysis method includes the steps that firstly, base reaction force time interval data of designated building scale models are obtained through a high-frequency balance wind tunnel test, and the base data are converted into a prototype; secondly, the batch of time interval data are applied to different theoretical analysis models to conduct wind response analysis of designated buildings respectively; meanwhile, the same batch of base time interval data serve as input conditions to be applied to reference models of the designated buildings to conduct dynamic response analysis, and calculated structure responses serve as the reference responses; finally, based on the principle of the Bayesian model average method, the probability expression of the structure responses is established and applied to different analysis models to conduct model selection and response prediction uncertainty analysis; Bayesian factors are defined, and uncertainty of different analysis models is evaluated, and the set of optima models are found from the analysis models.

Description

technical field [0001] The invention belongs to the field of wind resistance analysis and design of high-rise building structures, and in particular relates to an uncertainty analysis method of a high-rise building wind-induced response analysis model based on high-frequency balance wind tunnel test technology. Background technique [0002] With the rapid development of my country's economic construction, a large number of high-rise buildings and towering structures have been newly built in various places. Due to the dynamic characteristics of high flexibility and low damping of this type of building structure, the dynamic wind load effect has become one of the main factors affecting the safety and usability of high-rise building structures. High-frequency balance wind tunnel test technology is an effective means to analyze and determine the dynamic wind load effect of high-rise buildings at present. It has the advantages of simple model making, convenient test, time and mon...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of uncertainty numerical calculation program of the high-rise building wind-induced response analysis model based on the high-frequency balance wind tunnel test technology, and solve the gap between the existing analysis model and the real model for complex high-rise buildings in the numerical algorithm. There is a problem of large errors, and the optimal model found through quantitative comparison at the probability measurement level can more accurately reflect the response of the specified building structure under the action of the wind environment, laying the foundation for the subsequent refined research on equivalent static wind loads. Uncertainty Analysis Method of Basic Tall Building Wind-induced Response Analysis Model

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