Research In Angle-tube Braced Structure For Tall Buildings

The space of tall buildings is composed by level and vertical units, and horizontal load is control factor of tall buildings structural design. therefore, the sideways force system selection and composed are the keystone in tall buildings structural design. It's development can't in isolation of the innovation of structural engineers and their select and comprehensive using of modern structure systems, creating new systems more reasonable are the inevitable trend of the development of tall buildings.the most important character of tube is its space on the performance. Whichever tube can be regarded as a cantilever structure fixed by ground under the action of lateral force, it has bigger stiffness and carry capacity than the single structure and more adapt to build higher super tall building. In recent years, the tube structure has been widely adopted in tall buildings, at the same time, its structure systems has being innovated.This paper main put forward a new high-rise building structural form on the basis of summarizing existing tube structure systems, now named it angle-tube braced structure. The ground floor column's axial compressive force is especially big in high-rise buildings and skyscrapers, big section reinforced concrete column not only have negative influence on using of building but also there will appear short and fat column phenomenon. Therefore, the marked characteristic of angle-tube braced structure is it combine angle tube which replace Traditional great Reinforced concrete Column and brace main endure axis force, and give full scope to the advantage of angle-tube and brace to improve the overall stability and reduced the lateral move of structure.This paper mainly on the Preliminary research of angle-tube braced structure by three dimensions of the structural analysis software SATWE. make models for two structures Respectively in four angle-tube braced form and frame core tube form, there are Two steps in calculating to judge which form has greater superiority ,it according to the results, analyzing whether the two forms are satisfied with the seven indicators in tall building standard Specification or not, on the basis of all Indicators are satisfied in the min-limit compare the two kinds of structure forms'capability of resist sideways force and displacement, etc, then analyze the response of the two models in more floors. Using software MATLAB to analysis the datas.Compared to frame core structure, the angle- tube braced structure has bigger resist lateral stiffness and less Lateral move value but the difference is not too large when model floor number in 42; not all of indicators are satisfied with the seven indicators when add 6 meters in height of frame core structure, but 63 floor numbers of angle-tube structure could still meet the seven indicators, it show that the superiority of angle-tube structure more obvious in higher tall building.This paper outlook the foreground of modern Tall buildings structure, and probe into structural forms on the basis of summarizing the tall buildings of modern construction system and materials and put forward some possibility of development. in this article first proposed angle-tube braced structure but have no made further calculations and analyze of the structure in view of limited space and time. This structure concept has it's own exist possibility, as Theory research on truss-tube and science, technology improved in our country, the new high-rise building structural form will be used Frequently in tall and high-rise building systems.