The Earthquake Engineering Online Archive

Finite Element Analysis of Reinforced Concrete Structures Under Monotonic Loads

Kwak, Hyo-Gyoung; Filippou, Filip C.

UCB/SEMM-1990/14, Dept. of Civil Engineering, University of California, Berkeley, 1990-11, 120 pages (500/C23/90/14)

The study deals with finite element analysis of monotonic behavior of reinforced concrete beams, slabs and beam-column joint subassemblages. Concrete and reinforcing steel are represented by separate material models which are combined together with a model of the interaction between reinforcing steel and concrete through bond-slip to describe the behavior of the composite reinforced concrete material. A new smeared finite element model that considers cracking to be concentrated over a small region around the integration point is proposed. A new reinforcing steel model, embedded inside a concrete element resulting in significant savings in the number of nodes needed to account for the effect of bond slip, is developed. Correlation studies between analytical and experimental results and several parameter studies are conducted. These studies show the effects of tension stiffening and bond slip are very important and should always be included in finite element models. Parameters such as the tensile strength of concrete and the value of the cracked shear constant do not seem to affect the response of slender beams in bending.

Available online: http://nisee.berkeley.edu/documents/SEMM/SEMM-90-14.pdf (7 MB)