Under the same earthquake intensity, the concrete-filled steel tubular frame has different response.

A 3-d nonlinear finite element model of concrete-filled rectangular tubular frame is proposed in the paper to research the seismic behavior of this type of structure under low-reversed cyclic loading.

At this point, it is necessary to set up the component to resist the internal force of the film surface, which can be a tubular metal frame, but also a thin film gas rib.