CT1780 | Experiment-Based Column Performance Database - RP1

The created column database, collecting column tests from the United States and New Zealand, includes column dimensions, materials, design codes, reinforcement details, experimental column boundary conditions, experimental lateral strengths and displacements, and computed shear capacities from concrete and transverse reinforcement, in addition to damage state descriptions and corresponding limit state values. The documents describing the experimental tests are linked in the column database so that users can directly download the documents through the column database. Steel yield strengths were recorded for longitudinal and transverse reinforcements, respectively. The transverse reinforcement spacings were categorized as inside and outside plastic hinge regions. The spacing inside plastic hinge regions was used to distinguish column design eras, whereas the spacing outside plastic hinge regions was used to determine the minimum column shear capacity. Both transverse reinforcement ratio and transverse volumetric ratio are provided in the column database. The values of the transverse reinforcement ratio and transverse volumetric ratio are different for rectangular columns. The 199 columns were classified into “Era-3 Flexural Columns” (48 columns), “Era-2 Flexural Columns” (71 columns), “Era-1 Flexural Columns” (16 columns), “Era-1 Lap Spliced Flexural Columns” (7 columns), “Era-3 and Era-2 Shear Columns” (32 columns), “Era-1 Shear Columns” (22 columns), and “Era-1 Lap Spliced Shear Columns” (3 columns). Seven column damage state thresholds (CDSTs) are used in the column database to depict damage states and corresponding displacement ductility values. The development of such a new column performance database and column capacity limit state (CCLS) models for collecting comprehensive and harmonious CCLSs is necessary due to incomplete and missing data in some of columns in the PEER structural performance database (Berry et al., 2004). There are 416 columns in the PEER database, while 199 columns were recently collected in a resource package (RP1) of this project. The overlap percentages of flexural columns, mixed flexure-shear columns, shear columns, and lap-spliced columns are respectively 63%, 58%, 57%, and 31% of the corresponding columns in RP1. Besides, the classification algorithm for column failure modes adopted in the PEER database is not accurate enough for all columns. Thus, RP1 re-assigns a failure mode to each column.