N

characteristic stress at 0.1% tensile strain fp0 1k = 1547-.

The characteristic tensile capacity of each tendon: Ptk = fpk * At = 300 kN Characteristic tensile stress at 0.1% strain: Pt0 1k = fp0 1k * At = 255 kN©

Characteristic internal resistance of anchorage is Rik = Ptk = 300 kN Characteristic external resistance at grout/ground interface (based on BS

Dref v rely

Characteristic resistance of anchorage is Rak = min(Re k, Ri k) = 300 kN© Partial factor from set R4: Ya = 1.1

Design resistance is: Rqj =-= 273 kNv

However, if we use partial factor from EN 1537: yr = 1.35

Design resistance is: Ra d EN1537 --- 222 kNv yR

Verification of strength

Degree of utilization is

Degree of utilization is

Degree of utilization is

Degree of utilization is

based on EN 1997-1

based on EN 1537

The design is unacceptable if the degree of utilization is > 100%

based on EN 1997-1

based on EN 1537

The design is unacceptable if the degree of utilization is > 100%

Design of anchorages for investigation tests Design Approach 1

Proof load for investigation tests (Test Method 2) The purpose of the investigation test is to determine the anchorage's ultimate tensile resistance, without reaching the ultimate tensile resistance of the tendon.

The maximum load that the anchorage was able to carry in the investigation

Lock-off and proof loads for suitability tests (Test Method 2) The lock-off load should not exceed 0.6Ptk = 180.2 kN

Select a lock-off load P0 = 150kN©

The proof load should be at least equal to 1.25 x P0 = 187.5 kN, but must not exceed 0.95 x Pt0 ^ = 242.5kN Select a proof load Pp = 225kN

Assume that the ultimate resistances measured in the suitability tests were (225 j

0 0

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