|
|
These two graphs show 15 test data curves, with seven curves (Tests 712, 563, 113, 1223, 223, 1063, and 1019) on the first graph and eight curves (Tests 1201, 1124, 1073, 308, 718, 1323, 652, and 418) on the second graph. The x-axes are deflection in inches between 0 and 10 (0 and 254 mm). The y-axes are force in kips between 0 and 20 kips (0 and 90 kN). On the first graph subtitled Set 1, four curves (563, 113, 1223, 223) increase in force from 0 to between 9.5 and 11.5 kips over 1.3 inches in deflection, followed by sudden drop in force indicative of sudden post failure (as well as gage failure). The fifth curve increases in force from 0 to 12.5 kips over 1.8 inches, followed by sudden failure. The remaining two curves exhibit a more ductile behavior. One curve (1019) reaches a peak force of approximately 12.5 kips in two inches, then maintains that force until 3.1 inches, followed by a gradual reduction in strength to 4 kips at 8 inches. The other curve (712) reaches a peak force of approximately 16 kips in 3 inches, then maintains that force until 4.4 inches, followed by sudden failure. On the second graph subtitled Set 2, three curves (1201, 718, and 1124) increase in force from 0 to about 9 kips over 1.3 to 1.5 inches in deflection, followed by sudden drop in force indicative of sudden post failure. Two curves (1323 and 652) increases in force from 0 to 10 kips over 1.5 inches, followed by a more gradual increase in force to 11 kips by 2.7 inches, followed by sudden failure. One curve (418) increases in force from 0 to 13.2 kips in 1.9 inches followed by sudden failure. The remaining two curves exhibit a more ductile behavior. One curve (1201) reaches a peak force of approximately 8 kips in two inches, then maintains that force until 4.3 inches, followed by failure. The other curve (1073) reaches a peak force of approximately 5 kips in 1.5 inches, then maintains that force until 4.3 inches, followed by gradual failure.
FHWA-HRT-05-096
