Wind-induced Response Study Of Tall Building Structures Based On BIM Technology

With the social and economic development,concentration of urban population, constraints of land resource and the other issues become more prominent, When the development of high-rise buildings becoming a hot issue, people pay more attention to the safety and comfort of the high-rise building.The effect of wind on high-risebuildings has become an important subject to the high-rise building safety and comfort research.With the escalation of building materials and promotion of construction technology,the development of modern architecture towards the large, long and gentle trend,the natural frequency of the high-rise buildings get closer and closer to the predominant frequencies of natural wind,the wind-induced vibration response of high-rise building becomes more and more obvious. Wind load as one of the main load of the architecture,though causes less vibration amplitude than the seismic load, but it happens frequently, causing cumulative damage to the high-rise building structure, leading fatigue failure to the buildings, so it is very important to do the research of the high-rise buildingswind-induced vibration caused by wind load. On the other hand, with the increasing size of modern construction engineering, building information and the presence of the parties involved poor transfer difficulties, BIM (Building Information Modeling) technology as the construction sector in the application of information technology, through the establishment containsthree-dimensional informationmodel of architectural, structural, electrical and mechanical, providing model basis to the structural analysis and calculation. BIM platform can integrate the information database management of the building project, and alsoprovide the important technical supportfor the construction quality, schedule and cost management projects. Through combination of the BIM technology and SAP2000 structural analysis software,doing research of the high-rise building wind-induced response,there is an important practical significance in providing a reference of getting advance of BIM technology in wind-induced response analysis and realizing the achievement of setting building, structure, equipment, construction in one collaborative design.This thesis Firstly uses linear filtering method to simulate the wind speed time series, based on the process data of fluctuating wind speed at different heights, draw the fluctuating windspeed-time and totalpressure-time curve, then extractingthe data conversion to the power spectrum, and comparing the resulting power spectrum with the targetpower spectrum, verify the correctness of the wind speed-time data simulating by the linear filtering method. Then with the example of actual project, establishingthe building model and construction modelin Autodesk Revit software, show the configurationof the project with multiple dimensions.Importing and adjust the model established by Autodesk Revit software to SAP2000 software.Finally,do the modal analysis in SAP2000 software, then get the structure pre-six order natural frequencies, cycle and mode shapes. Obtain the displacement and acceleration timeresponse at different heights. According to the statistic analysis, the obtained results meet the specification requirements. Compare with the results calculated by norms, summed up the reasons of getting the differences. Finally calculate the shear values and bending moment at different height, and draw thetrend.