Document Type

Concrete structures paper

Publication details

Vessali, N, Valipour, H, Samali, B & Foster, SJ 2014, 'Development of the compressive membrane action in partially-restrained reinforced concrete sub-assemblages', in ST Smith (ed.), 23rd Australasian Conference on the Mechanics of Structures and Materials (ACMSM23), vol. I, Byron Bay, NSW, 9-12 December, Southern Cross University, Lismore, NSW, pp. 357-362. ISBN: 9780994152008.

Peer Reviewed



Development of compressive membrane (arching) action in longitudinally-restrained reinforced concrete (RC) beams subjected to medium to large displacements can enhance the stiffness, ultimate load capacity and the robustness of the RC frames under unexpected loading scenarios. The enhancement provided by the arching action is not considered in the current design practice and accordingly, the main objective of this paper is to evaluate the development of compressive membrane action in partially-restrained RC beam sub-assemblages. The results of experiments conducted on RC sub-assemblages with different concrete compressive strength (f′c) and reinforcement ratio () are briefly discussed and the tested sub-assemblages are analysed using two different types of nonlinear FE models, i.e. 2D continuum-based and 1D frame FE models. The results obtained from the numerical models as well as the experimental data are employed to quantify the enhancing effects of the compressive membrane action with respect to concrete compressive strength and reinforcing bar proportion.