Shaped ("l," The "+" T ") Concrete Filled Steel Tube Composite Columns And Application

The Concrete -filled special-shaped steel tubular column has a better bearing capacity, earthquake resistance. So, the Concrete-filled special-shaped rectangular steel tubular column becomes the direction of multi-story steel-frame structures.The Concrete -filled special-shaped rectangular steel tubular column is a new type of structural member. Flexible section is its distinct characteristic. Indoor area and space can be enlarged, and decoration can be convenient, while special-shaped column were designed in buildings. So, the special-shaped column composed of the concrete-filled special-shaped rectangular steel tubes will be used widely, with country-wide popularization of the steel structural buildings.After a short introduction of the four basic calculation method about the concrete -filled column, the superposition theory, which is of simple calculation, of clear conception, of reliable safe, is verified to be suitable for the calculation of concrete-fill special-shaped rectangular steel tubular column. L-shaped and T-shaped column composed of concrete -filled special-shaped rectangular steel tubes. T-shaped column as a example of that, this paper introduces a new calculation method on concrete -filled special-shaped rectangular steel tubes.For L-shaped column specimen and T-shaped concrete -filled special-shaped rectangular steel tubular columns are design for the specimen working under the effects of cyclic lateral loading. As the limited of the laboratory equipments, we can learn about the basic working movements.After learning about the basic working, the result of ANSYS is concordant to a new calculation method on concrete -filled special-shaped rectangular steel tubes.At last, the author puts forward several problems for the Concrete-filled special-shaped rectangular steel tubes to be researched more deeply and makes an expectation of them.