Table 4-2: Comparison between bearing bapacities before and after reinforcement.

Specimens Axial force (kN) The calculated value of ultimate load of column (kN) Tested value of positive horizontal peak load (kN) Tested value of reverse horizontal peak load (kN) Positive increase of load (%) Reverse increase of load (%)
YQKZ1 573.5 54.0 230.1 253.9 326.2 370.3
YQKZ2 573.5 54.0 228.0 253.6 322.2 369.6
YQKZ3 666.0 56.1 212.4 252.2 278.6 349.6
YQKZ4 666.0 56.1 218.6 273.7 289.7 387.9
YQKZ5 740.0 57.3 194.5 201.9 239.6 252.5
YQKZ6 740.0 57.3 197.7 197.9 245.1 245.5