1 Introduction
2 Encapsulated Anchor System
3 Test Methods
3.1 Static Load Test
3.2 Fatigue Test
3.3 Hydrostatic Test
3.4 Push-in Test
3.5 Jacking Test
4 Test Results and Discussion
4.1 Static Load Test
4.2 Fatigue Test
4.3 Hydrostatic Test
4.4 Push-in Test
Specimen | Maximum load (kN) | Δg (mm) | |
---|---|---|---|
Before | After | ||
P1 | 359.3 | – | – |
P2 | 370.3 | – | – |
P3 | 324.3 | 7.84 | 6.56 |
P4 | 311.8 | 7.41 | 6.17 |
P5 | 304.7 | 6.70 | 6.10 |
4.5 Jacking Test
Specimen | Pre-jacking load (kN) | Maximum load (kN) |
---|---|---|
J1 | 27.3 | 265.0 |
J2 | 37.5 | 266.8 |
J3 | 19.6 | 263.6 |
J4 | 26.8 | 263.8 |
5 Load Transfer Test
Hairpin bars (HP) | Remarks | |||||
---|---|---|---|---|---|---|
None | D10 | D13 | D16 | |||
Horizontal backup bars (HB) | None | – | – | – | – | |
D13 | 1.89a 1.75b | 2.06a 1.96b | 1.82a 2.04b | – | HB located just in front of bearing plate | |
1.85a 1.70b | 1.89a 1.88b | – | – | HB located inside hairpin or at equivalent location | ||
D16 | 2.00a 2.17b | – | 2.03a 2.04b | 2.11a 2.05b |