Research On New Technology Of High Rise Steel Tube Concrete Construction

In the rapid development of China,national construction,urban construction and new rural construction are based on the national development policy.The high-rise and super high-rise buildings are growing more and more,the large span and the floor space are increasing rapidly.The force performance of the concrete filled steel tube columns and steel reinforced concrete columns and the traditional construction technology can not meet the requirements of the current construction.Therefore,the steel reinforced concrete column is used as the concrete column.A new type of composite structure has been developed gradually,which fully combines the advantages of concrete filled steel tube columns and steel reinforced concrete columns,and has good ductility and high bearing capacity.The advantages of steel reinforced concrete filled steel tubular columns make it have broad prospects for development in super high-rise and long-span structures.Beam column joints,as the power transfer hub of the structure system,bear the complex effect of shear,bending moment and axial force,which have an important influence on the bearing capacity and stability of the whole building.At present,the research on steel reinforced concrete column composite joints is relatively few at home and abroad,which hinders its application and popularization in engineering.The construction technology is more difficult.It is necessary to find the construction method suitable for the concrete filled steel tube of ordinary,high and super high rise buildings.Until the rapid development of the displacement technology in the near future,the technology of the concrete filled steel tube top lift pump has been highlighted-the "lifting method" for short.Through numerical simulation,the mechanical and deformation properties of the steel-tube concrete column space composite joints under the low cycle reciprocating load are analyzed.First,the nonlinear finite element model of steel tube concrete column composite joints under cyclic loading is established.By using the characteristics of the ABAQUS finite element analysis method "full process simulation",the process of the steel reinforced concrete column space composite node from the initial force to the final break is simulated,and the mechanical mechanism and characteristics of the joint are comprehensively analyzed.Second,the spatial coupling effect of the steel bone steel tube concrete column joint under the condition of two-way loading is explored,and the failure process of the joint is analyzed by the stress cloud map,and the performance of the steel tube concrete column concrete column space composite joint is synthetically evaluated.Third,specific examples are cited to introduce the construction technology of high-rise steel reinforced concrete column concrete--jacking technology.Fourth,the introduction of new BIM technology in the top lift technology,and then the dynamic simulation before construction,relatively single use of top lift technology can be more able to solve problems ahead of time,save budget and shorten the time limit.Better implementation of information integration,collaboration and integration is a good reference for construction.