Centrifuge anchor test programme and results
| Test series* | T: °C | μ: mPas | v: mm/s | V | qu: kPa | Nγ | δu/B | αu: deg | uu: kPa | Δzf/B | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry§ (γ′ = 16·43 kN/m3) (Chow et al. 2015) | M0·1D | — | 0 | 1 | — | 728·4 | 8·9 | 2·96 | 66·8 | — | — |
| IC1D | — | 0 | 3 | — | 825·2 | 10 | 2·65 | 63·8 | — | — | |
| IC1·25D | — | 0 | 3 | — | 820·3 | 10 | 2·94 | 66·3 | — | — | |
| IC1·5D | — | 0 | 3 | — | 712·0 | 8·7 | 2·75 | 62·1 | — | — | |
| S1 (water), γ′ = 10·32 kN/m3, cv = 4·93 × 10−4 m2/s at z = 2·8 m | M0·3W(1)† | — | 1 | 0·3 | 0·02 | 445·7 | 8·6 | 4·41 | — | — | — |
| M0·3W(2) | — | 1 | 0·3 | 0·02 | 439·8 | 8·5 | 4·11 | 55·3 | 65·1 | 2·67 | |
| IC1W | — | 1 | 30 | 1·95 | 583·7 | 11·3 | 3·70 | 47·3 | 75·3 | 1·65 | |
| IC1·25W‡ | — | 1 | 30 | 1·95 | 509·9 | 9·9 | 3·88 | 52·8 | 64·9 | 1·56 | |
| S2 (methocel), γ′ = 10·23 kN/m3, cv = 7·3 × 10−7 m2/s at z = 2·8 m | M30M | 19·2 | 743 | 30 | 1349 | 1201·7 | 23·5 | 5·02 | 54·7 | 12·8 | 2·90 |
| IC1M | 20·3 | 707 | 30 | 1276 | 1529·2 | 29·9 | 4·94 | 53·4 | 0·5 | 2·66 | |
| S3 (methocel) γ′ = 10·53 kN/m3, cv = 5·99 × 10−7 m2/s at z = 2·8 m | M0·3M | 21·1 | 675 | 0·3 | 16 | 687·1 | 13·1 | 4·03 | 52·3 | 51·6 | 2·47 |
| M1M | 20·4 | 703 | 1 | 55 | 802·9 | 15·3 | 4·34 | 52·3 | 41·6 | 2·88 | |
| M3M | 21·1 | 678 | 3 | 158 | 1067·0 | 20·3 | 5·11 | 53·7 | 18·1 | 2·60 | |
| M10M(1)‡ | 20·9 | 684 | 10 | 533 | 1552·7 | 29·5 | 6·27 | 60·1 | −12·3 | 2·74 | |
| M10M(2)‡ | 20·6 | 693 | 10 | 540 | 1522·8 | 28·9 | 6·05 | 59·7 | −19·1 | 2·56 | |
| M30M‡ | 20·9 | 682 | 30 | 1595 | 1497·6 | 28·5 | 5·99 | 59·7 | −9·7 | 2·48 | |
| Test series | Δ | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry | M0·1D | — | 0 | 1 | — | 728·4 | 8·9 | 2·96 | 66·8 | — | — |
| IC1D | — | 0 | 3 | — | 825·2 | 10 | 2·65 | 63·8 | — | — | |
| IC1·25D | — | 0 | 3 | — | 820·3 | 10 | 2·94 | 66·3 | — | — | |
| IC1·5D | — | 0 | 3 | — | 712·0 | 8·7 | 2·75 | 62·1 | — | — | |
| S1 (water), | M0·3W(1) | — | 1 | 0·3 | 0·02 | 445·7 | 8·6 | 4·41 | — | — | — |
| M0·3W(2) | — | 1 | 0·3 | 0·02 | 439·8 | 8·5 | 4·11 | 55·3 | 65·1 | 2·67 | |
| IC1W | — | 1 | 30 | 1·95 | 583·7 | 11·3 | 3·70 | 47·3 | 75·3 | 1·65 | |
| IC1·25W | — | 1 | 30 | 1·95 | 509·9 | 9·9 | 3·88 | 52·8 | 64·9 | 1·56 | |
| S2 (methocel), | M30M | 19·2 | 743 | 30 | 1349 | 1201·7 | 23·5 | 5·02 | 54·7 | 12·8 | 2·90 |
| IC1M | 20·3 | 707 | 30 | 1276 | 1529·2 | 29·9 | 4·94 | 53·4 | 0·5 | 2·66 | |
| S3 (methocel) | M0·3M | 21·1 | 675 | 0·3 | 16 | 687·1 | 13·1 | 4·03 | 52·3 | 51·6 | 2·47 |
| M1M | 20·4 | 703 | 1 | 55 | 802·9 | 15·3 | 4·34 | 52·3 | 41·6 | 2·88 | |
| M3M | 21·1 | 678 | 3 | 158 | 1067·0 | 20·3 | 5·11 | 53·7 | 18·1 | 2·60 | |
| M10M(1) | 20·9 | 684 | 10 | 533 | 1552·7 | 29·5 | 6·27 | 60·1 | −12·3 | 2·74 | |
| M10M(2) | 20·6 | 693 | 10 | 540 | 1522·8 | 28·9 | 6·05 | 59·7 | −19·1 | 2·56 | |
| M30M | 20·9 | 682 | 30 | 1595 | 1497·6 | 28·5 | 5·99 | 59·7 | −9·7 | 2·48 | |
For ease of reference, tests are identified as LvP(n), where
‘L’ denotes the loading type (M for monotonic loading, IC for irregular cyclic loading)
‘v’ denotes the monotonic loading rate (v = 0·3 to 30 mm/s) or the peak cyclic load ratio (CLRpeak = q/qu = 1 or 1·25)
‘P’ denotes the pore fluid (D for dry, W for water, M for methocel)
‘n’ denotes the test recurrence (‘1’ for the first test, ‘2’ for the second test etc.).
PPT and/or accelerometer data lost due to damaged cable.
Test stopped due to actuator hitting displacement limit.
Drained monotonic and cyclic test results for a plate anchor with similar geometry (except ta = 2·75 mm) in dry dense sand.
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