Numerical Simulation Of Fluid-structure Interaction For Wind-induced Response Of High-rise Buildings Considering The Foundation

With the popularity of high-rise buildings,high-rise building wind engineering research is becoming more and more mature。The height of high-rise buildings is constantly renovated,and the human has created many new miracles in the history of human civilization.The sensitivity of high rise buildings to wind load makes the wind load become one of the main loads in high-rise design.Wind induced response analysis of high-rise structures is a hot spot in recent years.Wind load is one of the main loads which can not be ignored in the design of high-rise buildings,due to the sensitivity of tall buildings to wind load.Wind induced response analysis of high-rise structures is of great significance to engineering.But at present,most scholars only focus on the study of the wind resistance of superstructure,ignoring the influence of foundation on the superstructure.Most of the high-rise buildings have a foundation,so ignoring the bottom of the foundation will have a great impact on the result in the analysis of the wind effect of high-rise buildings.This article deals with the effect of high-rise building,and fluid-solid coupling method is adopted using large eddy simulation model,and considering pulsating wind speed.The CFD analysis of three different subgrid scale models is carried out for large eddy simulation in the second chapter in order to select the appropriate subgrid scale model.By contrast,the dynamic subgrid scale model is chosen as the final model.Four different models have been established and compared in the third chapter,coming to the conclusion that it is advantageous to carry out the analysis of the bearing capacity without considering the interaction between the foundation and the structure,but for the displacement control and comfort control it is negative.In order to increase the comfort of high-rise buildings,it is suggested that the interaction of the structure should be taken into account in the design of high-rise buildings.In the fifth chapter of this paper,the response of a certain high-rise example is analyzed,and it is found that the influence of the foundation is different for different structural systems.But overall,it is suggested to consider the integrity of the foundation in the analysis of wind effects on tall buildings.The sensitivity of high-rise buildings on the wind cannot be ignored,and the interaction of high-rise building foundation and superstructure will produce great influence on the wind effect.The different models are compared in this paper.For the engineering design the proposed design considers the overall structure of the foundation and suggestions,so that not only meet the requirements of high guarantee there is enough comfort bearing capacity.