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Contributions to Proceedings:

G. Hofstetter, H.A. Mang:
"Nonlinear Finite Element Analysis of Prestressed Concrete Shells";
in: "Proceedings of the 3rd International Conference on Numerical Methods for Non-Linear Problems (Vol. 3)", Pineridge Press, Swansea, UK, 1986, 344 - 362.



English abstract:
This paper is devoted to ultimate load analysis of thin prestressed concrete (PC) shells by the Finite Element Method (FEM). Curved, triangular, C^1-conforming finite elements based on the Kirchhoff-Love assumptions are used for the discretization of shells with analytically describable middle surfaces. Only bonded, post-tensioned tendons with analytically describable courses of the axes are considered. Eccentricities of the tendons with respect to the middle surface of the shell are admitted. In the theoretical part of the paper work-equivalent node forces from prestress before grouting as well as changes of these forces resulting from loads applied after grouting are determined. The load rates are such that neither inertia forces nor long-time deformations of concrete and relaxation of the prestressing steel must be considered. In the numerical part of the paper the theoretical concept is verified within the framework of ultimate load analysis of a circular-cylindrical barrel vault tested by other investigators.

Created from the Publication Database of the Vienna University of Technology.