Requirements regarding separation of concrete slabs and the column/connection have been simplified by referencing Section 2.3.4. In addition, measures should be taken to prevent concrete from entering the space on either side of the spacer plates adjacent to the yielding core of the Yield-Link connection.
Figure description:
Cyclic Test Results: Moment vs. Story Drift
Moment at Face of Column vs. Story Drift
Legend
- Test #1 — color: orange; symbol: Dash-dot line
- Test #2 — color: green; symbol: Dashed line
- Test #3 — color: blue; symbol: Long-dashed line
- +0.8Mp — color: black; symbol: Horizontal dashed line
- -0.8Mp — color: red; symbol: Horizontal dotted line
- +4% Drift — color: blue; symbol: Vertical dashed line
- -4% Drift — color: purple; symbol: Vertical dotted line
Annotations
- +0.8Mp (horizontal_line - position: y = 8900)
- -0.8Mp (horizontal_line - position: y = -8900)
- +4% Drift (vertical_line - position: x = 4.0)
- -4% Drift (vertical_line - position: x = -4.0)
| Story Drift (%) | Test #1 Moment (kip-in.) | Test #2 Moment (kip-in.) | Test #3 Moment (kip-in.) |
|---|---|---|---|
| -5.5 | null | null | -20000 |
| -5.0 | null | -20000 | -19800 |
| -4.5 | -18500 | -19200 | -19200 |
| -4.0 | -17500 | -18500 | -18500 |
| -3.0 | -16000 | -17000 | -17000 |
| -2.0 | -13500 | -14000 | -14000 |
| -1.0 | -10000 | -10000 | -10000 |
| 0.0 | 0 | 0 | 0 |
| 1.0 | 11500 | 12000 | 12000 |
| 2.0 | 15500 | 16500 | 16500 |
| 3.0 | 17500 | 18500 | 18500 |
| 4.0 | 18500 | 19200 | 19200 |
| 4.5 | 18800 | 19500 | 19500 |
| 5.0 | 17000 | 19600 | 19600 |
| 5.3 | null | 1000 | 18000 |
Notes: The chart displays hysteresis loops for three cyclic loading tests on a column. The data provided in the markdown table represents the outer envelope of the cycles for each test. The reference lines indicate threshold values for moment capacity (0.8Mp and drift limits (4%.))
Fig. C-12.2. Moment at face of column versus story drift.
| Building | SMF | Incremental Dynamic Analyses | ||
|---|---|---|---|---|
| SMT (g) | CMR | ACMR | ||
| 4-story | RBS | 094 | 1.80 | 2.52 |
| Strong Frame | 0.94 | 1.83 | 2.58 | |
| 8-story | RBS | 0.55 | 1.39 | 1.87 |
| Strong Frame | 0.55 | 2.55 | 4.08 | |
| 12-story | RBS | 0.40 | 1.41 | 1.84 |
| Strong Frame | 0.40 | 2.63 | 4.18 | |
| 20-story | RBS | 0.08 | 1.95 | 2.23 |
| Strong Frame | 0.08 | 5.53 | 8.81 | |