The Analysis And Control Methods Of Vertical Deformation Of Super High-rise Frame-core Wall Structure Under Construction

In recent years,with the improvement of economic,the number of super-tall buildings has skyrocketed.The structural analysis of super-tall buildings is becoming more and more mature.During the construction and service of super-tall buildings,the vertical uneven deformation of the building has attracted much attention.In a vertical force system like super tall buildings,the structure's self-heavy load accounts for nearly 85% of the overall vertical load of the structure.The architectural space layout makes the dimensions of the components far more than the component sizes of ordinary floors,the components themselves bear greater structural internal forces,and produce great stress and strain under the action of such vertical load.Therefore,large vertical deformation is generated between different vertical components.For a 100-story super high-rise core tube building,the vertical deformation can reach more than 80 mm at the top when buiding seals its roof atop the concrete and steel frame.This article,on the basis of domestic and foreign research,analyzed the mechanism of vertical differential deformation of super-tall buildings,summed up the formula of strength,elasticity modulus,creep and shrinkage of concrete.Write code through MATLAB,simulate Effect of temperature on creep shrinkage of concrete by using the micro-prestress solidification theory in B3 model.Using the finite element software simulated and analyzed all the factors above,summarize the law of the vertical deformation with the development of the floor.From the perspective of structural mechanics,propose equivalent processings for the construction and component information of super-tall buildings.The simplified calculation formula of vertical deformation of single component is extended to the simplified calculation formula of plane single truss,and eventually was applied to complex three-dimensional structure,solving the problem arousing by construction,redistribution of internal force causing by horizontal member and reinforcement.From the perspective of structural mechanics,established a simplified calculation formula of vertical deformation,and forward a calculation formula of leading layer number for core tube leading construction.In the end,the Shanghai center tower is used as an actual project case to ues the formula derived above.Analysed the influence factors of vertical deformation of super high – rise,combined with the simplified formula,this paper puts forward an operational guidance for the typical construction conditions in super high-rise construction.