Analysis of Steel-Concrete Composite Structure Element
The structure of eccentric degenerated 3-D shell element of thin-wall steel tube concrete composite structure and the connection with 3-D block isoparametric element has been discussed using finite element method. Without considering the intensity limit of delamination damage of the two materials, an integrated stiffness matrix is formed with the combination of stiffness matrix of steel-wall shell element and that of concrete spatial block element. In order to make the superposition rule may be used at the joint of 8-node curved shell element and 20-node block element, an eccentric 8-node shell element is constructed.
C. Z. Dong and C. Qu, "Analysis of Steel-Concrete Composite Structure Element", Applied Mechanics and Materials, Vols. 94-96, pp. 402-405, 2011