Failure analysis of shear critical RC structural members

2004-06-01
This paper presents a beam finite element for the simulation of the monotonic and cyclic response of RC structural members under the interaction of flexure, axial force and shear. The proposed beam element follows the assumptions of the Timoshenko shear beam theory with a three-field Hu-Washizu variational formulation for the derivation of the element response. The nonlinear response of the element is obtained through section integration of nonlinear material response. A 3d plastic damage model for cyclic analysis of concrete is implemented with the general closest point projection algorithm. Concrete confinement effects are included by satisfaction of transverse equilibrium. The tensile and compressive response of the concrete model is related to the fracture energy, thus ensuring objectivity of numerical results. In the presence of reinforcing steel the fracture energy should be adjusted according to criteria in modern design codes. The proposed beam element is validated by comparing the numerical response with experimental measurements of the monotonic and cyclic behavior of different type of specimens: shear deficient columns and beam, squat and slender shear walls. These correlation studies confirm the promise of the proposed approach.

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Citation Formats
A. Sarıtaş, “Failure analysis of shear critical RC structural members,” presented at the 5th International Conference on Computation of Shell and Spatial Structures, (1- 4 Haziran 2005), 2004, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/75973.