RC columns in cyclic biaxial bending and axial load
The force-deformation behaviour and failure of reinforced concrete columns under cyclic biaxial bending and axial load is important for the three dimensional response of r.c. stuctures to bidirectional ground motions. Recent years have seen the development of various analytical/numerical biaxial models for columns. The scarcity of test data for various bi-axial load paths is a limiting factor for the further development and calibration of such models. This paper presents the results of a test programme which aims at supplementing the available experimental information. The programme refers to a single specimen geometry and reinforcement, selected so that shear deformations and bond-slip effects are insignificant, and the behaviour is governed by bending and axial load. During each test the axial load is essentially constant and approximately the same in all the tests. The programme focuses on the effect of the biaxial load path. Results show strong coupling between the two directions of bending, which increases energy dissipation, as well as between them and the axial direction.
Bibliographic Reference: Paper presented: 10th World Conference on Earthquake Engineering, Madrid (ES), July 19-25, 1992
Availability: Available from (1) as Paper EN 36766 ORA
Record Number: 199210611 / Last updated on: 1994-12-02
Original language: en
Available languages: en