Compression tests with confinement for advanced modeling of concrete columns

Motivation

The robotic line enables the production of a spiral reinforcement. Innovative multi-spiral reinforcement can be used in both rounded and rectilinear cross-sections. The typical applications are precast columns subject to high loading and/or seismicity. To realistically describe the behavior of such columns, a 3D nonlinear analysis is required. Prior to this analysis it is necessary to calibrate the constitutive law of the confined concrete. This project analyzes and compares three different experimental setups with transverse confinement, two passive and and one active. In all three cases, the parameters of the selected material model will be identified in the Bayesian statistical framework allowing for quantification of the information content in particular experiments. The goal of the project is to compare the advantages and drawbacks of particular experiments with respect to calibration of constitutive law of confined concrete. The validation of the material model with its identified parameters will be done on the experimental data of precast columns analyzed at the NTU in Taipei.

Project objectives

The project goals comprise
  • design of three different setups for testing of confined concrete
  • parameters identification of Grassl-Jirásek material model
  • validation of the material model on a large-scale experiment of precast column

Project outputs

Journal papers

Conference papers

Experimental database